:root {
    --ink: #152b45;
    --ink-2: #29435f;
    --muted: #6b7888;
    --paper: #fbfaf6;
    --white: #ffffff;
    --line: #e3e7e8;
    --navy: #17314d;
    --teal: #287d79;
    --teal-soft: #e6f3f0;
    --gold: #e7a93e;
    --gold-soft: #fff3dc;
    --coral: #ce6a5a;
    --purple: #7164a8;
    --shadow: 0 18px 45px rgba(23, 49, 77, 0.09);
    --radius: 18px;
}

* { box-sizing: border-box; }
html {
    max-width: 100%;
    overflow-x: hidden;
    scroll-behavior: smooth;
}
body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
}
@supports (overflow: clip) {
    html, body { overflow-x: clip; }
}
img, picture, video, canvas, svg { max-width: 100%; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: #1c5d5a; }
button, input, select, textarea { max-width: 100%; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--ink); letter-spacing: -0.035em; line-height: 1.12; }
h1 { font-size: clamp(2.15rem, 4vw, 3.6rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.45rem, 2vw, 2rem); margin-bottom: .65rem; }
h3 { font-size: 1.2rem; }

.site-header {
    position: sticky;
    z-index: 30;
    top: 0;
    border-bottom: 1px solid rgba(23, 49, 77, .09);
    background: rgba(251, 250, 246, .92);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(1240px, calc(100% - 40px));
    min-height: 76px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 38px;
}
.header-inner > *, .page-shell > *, .site-footer > * { min-width: 0; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); margin-right: auto; }
.brand:hover { color: var(--ink); }
.brand-mark { display: block; width: 42px; height: 42px; border-radius: 12px; }
.brand strong, .brand small { display: block; line-height: 1.15; }
.brand strong { font-size: .95rem; letter-spacing: -.01em; }
.brand small { color: var(--muted); font-size: .7rem; margin-top: 3px; letter-spacing: .07em; text-transform: uppercase; }
.main-nav { display: flex; align-items: stretch; align-self: stretch; gap: 28px; }
.main-nav a { position: relative; display: grid; place-items: center; color: var(--ink-2); font-size: .9rem; font-weight: 650; }
.main-nav a::after { content: ""; position: absolute; height: 3px; left: 0; right: 0; bottom: 0; border-radius: 3px 3px 0 0; background: transparent; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--teal); }
.main-nav a[aria-current="page"]::after { background: var(--teal); }
.account-menu { position: relative; display: flex; align-items: center; gap: 9px; padding-left: 19px; border-left: 1px solid var(--line); }
.plan-chip { padding: 5px 9px; border-radius: 999px; color: #276957; background: #e6f3ee; font-size: .64rem; font-weight: 800; white-space: nowrap; }
.plan-chip:hover { color: #1d594a; }
.plan-chip.free { color: #7b5522; background: var(--gold-soft); }
.plan-chip.subscriber, .plan-chip.complimentary { color: #fff; background: var(--teal); }
.plan-chip.staff { color: #5b518f; background: #eceafa; }
.avatar { display: grid; flex: 0 0 auto; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: var(--navy); background: var(--gold-soft); font-weight: 800; }
.account-name { font-size: .88rem; font-weight: 700; }
.account-dropdown summary { display: flex; align-items: center; gap: 8px; padding: 5px 2px; color: var(--ink); cursor: pointer; list-style: none; }
.account-dropdown summary::-webkit-details-marker { display: none; }
.account-dropdown summary:hover .account-name { color: var(--teal); }
.account-dropdown summary:focus-visible { outline: 3px solid rgba(40,125,121,.2); outline-offset: 4px; border-radius: 8px; }
.account-caret { width: 7px; height: 7px; margin: -4px 2px 0 1px; border-right: 1.5px solid var(--muted); border-bottom: 1.5px solid var(--muted); transform: rotate(45deg); transition: transform .2s ease, margin .2s ease; }
.account-dropdown[open] .account-caret { margin-top: 3px; transform: rotate(225deg); }
.account-panel { position: absolute; z-index: 40; top: calc(100% + 13px); right: 0; width: 260px; overflow: hidden; padding: 8px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); box-shadow: 0 20px 55px rgba(20,43,69,.18); transform-origin: top right; animation: account-menu-in .16s ease both; }
.account-panel::before { content: ""; position: absolute; top: -6px; right: 21px; width: 11px; height: 11px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); background: var(--white); transform: rotate(45deg); }
.account-panel-heading { padding: 10px 12px 13px; border-bottom: 1px solid var(--line); }
.account-panel-heading strong, .account-panel-heading small { display: block; }
.account-panel-heading small { margin-top: 2px; color: var(--muted); font-size: .7rem; }
.account-panel > a { display: block; padding: 11px 12px; border-radius: 9px; color: var(--ink); }
.account-panel > a:hover { color: var(--ink); background: #f2f7f6; }
.account-panel > a strong, .account-panel > a small { display: block; }
.account-panel > a strong { font-size: .8rem; }
.account-panel > a small { margin-top: 1px; color: var(--muted); font-size: .68rem; }
.account-panel form { margin: 5px 4px 0; padding-top: 7px; border-top: 1px solid var(--line); }
.account-panel button { width: 100%; padding: 8px; border: 0; border-radius: 8px; color: #91483f; background: transparent; cursor: pointer; text-align: left; font-size: .78rem; font-weight: 750; }
.account-panel button:hover { background: #fff1ef; }
.public-nav { display: flex; align-items: center; gap: 24px; }
.public-nav > a:not(.button) { color: var(--ink-2); font-size: .82rem; font-weight: 700; }
.public-nav > a:not(.button):hover { color: var(--teal); }
.public-nav .public-login { padding-left: 22px; border-left: 1px solid var(--line); }
.public-nav .public-signup { min-height: 41px; padding: 8px 16px; font-size: .8rem; }
.mobile-nav { display: none; }
.mobile-nav summary { display: grid; align-content: center; gap: 4px; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; list-style: none; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav summary > span { display: block; width: 20px; height: 2px; border-radius: 2px; background: var(--navy); transition: transform .2s ease, opacity .2s ease; }
.mobile-nav[open] summary > span:first-child { transform: translateY(6px) rotate(45deg); }
.mobile-nav[open] summary > span:nth-child(2) { opacity: 0; }
.mobile-nav[open] summary > span:last-child { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav-panel { position: fixed; z-index: 45; top: 73px; right: 12px; left: 12px; max-height: calc(100vh - 85px); overflow-y: auto; padding: 13px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: 0 22px 60px rgba(20,43,69,.2); animation: account-menu-in .18s ease both; }
.mobile-user-row { display: flex; align-items: center; gap: 11px; padding: 10px 9px 15px; border-bottom: 1px solid var(--line); }
.mobile-user-row > div, .mobile-nav-panel nav a { min-width: 0; }
.mobile-user-row strong, .mobile-user-row small { display: block; overflow-wrap: anywhere; }.mobile-user-row strong { font-size: .86rem; }.mobile-user-row small { color: var(--teal); font-size: .66rem; font-weight: 750; }
.mobile-nav-panel nav { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; padding: 10px 0; }
.mobile-nav-panel nav a { display: block; min-height: 66px; padding: 11px 12px; border-radius: 10px; color: var(--ink); background: #f5f7f6; }
.mobile-nav-panel nav a:hover { color: var(--ink); background: var(--teal-soft); }
.mobile-nav-panel nav strong, .mobile-nav-panel nav small { display: block; }.mobile-nav-panel nav strong { font-size: .77rem; }.mobile-nav-panel nav small { margin-top: 2px; color: var(--muted); font-size: .61rem; line-height: 1.35; }
.mobile-nav-panel form { padding-top: 8px; border-top: 1px solid var(--line); }.mobile-nav-panel form button { width: 100%; min-height: 43px; border: 0; border-radius: 9px; color: #91483f; background: #fff1ef; font-size: .76rem; font-weight: 800; }
@keyframes account-menu-in { from { opacity: 0; transform: translateY(-5px) scale(.98); } to { opacity: 1; transform: none; } }

.page-shell { width: min(1160px, calc(100% - 40px)); min-height: calc(100vh - 150px); margin: 0 auto; padding: 54px 0 88px; }
.site-footer { display: flex; justify-content: space-between; gap: 24px; width: min(1160px, calc(100% - 40px)); margin: auto; padding: 26px 0 34px; border-top: 1px solid var(--line); color: var(--muted); font-size: .76rem; }
.site-footer > div, .site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-mark { width: 22px; height: 22px; margin-right: -8px; border-radius: 6px; }
.site-footer nav { justify-content: flex-end; }
.site-footer nav a { font-weight: 700; }
.messages { position: fixed; z-index: 50; top: 90px; right: 22px; width: min(390px, calc(100% - 44px)); }
.message { padding: 14px 17px; border: 1px solid #cce5dc; border-radius: 12px; color: #225c4a; background: #f0faf6; box-shadow: var(--shadow); font-weight: 650; }
.eyebrow { margin-bottom: 9px; color: var(--teal); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow.light { color: #b9ddd5; }
.muted { color: var(--muted); }
.auth-card, .account-panel, .mobile-nav-panel, .settings-card, .topic-card, .mock-card, .online-question, .worked-item, .legal-page { overflow-wrap: anywhere; }

.button {
    display: inline-flex; align-items: center; justify-content: center; gap: 12px;
    min-height: 46px; padding: 10px 21px; border: 1px solid transparent; border-radius: 11px;
    cursor: pointer; font-weight: 750; font-size: .91rem; transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { color: var(--white); background: var(--navy); box-shadow: 0 10px 25px rgba(23, 49, 77, .16); }
.button.primary:hover { color: var(--white); background: #0d243b; }
.button.warm { color: #352817; background: var(--gold); box-shadow: 0 10px 25px rgba(231, 169, 62, .2); }
.button.warm:hover { color: #251b0e; background: #f0b750; }
.button.secondary { color: var(--ink); border-color: #cfd7dc; background: var(--white); }
.button.secondary:hover { border-color: var(--teal); }
.button.danger { color: var(--white); background: #a8463e; }
.button.danger:hover { color: var(--white); background: #8d342e; }
.button.wide { width: 100%; }
.legal-check { display: grid !important; grid-template-columns: 20px 1fr; gap: 9px; align-items: start; margin: 2px 0 8px !important; color: var(--ink-2); font-size: .78rem !important; font-weight: 500 !important; line-height: 1.45; }
.legal-check input { width: 17px !important; height: 17px !important; margin-top: 2px; accent-color: var(--teal); }
.legal-check a { font-weight: 750; }
.checkout-consent { display: grid; gap: 8px; }
.checkout-consent .button { margin-top: 5px; }

/* Public landing page */
.landing-page { max-width: 100%; overflow-x: hidden; }
.landing-page .site-header { background: rgba(251,250,246,.86); }
.landing-shell { width: 100%; max-width: none; padding: 0; }
.landing-hero { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr); align-items: center; gap: clamp(50px, 7vw, 110px); width: min(1280px, calc(100% - 48px)); max-width: 100%; min-height: 710px; margin: 0 auto; padding: 86px 24px 92px; }
.landing-hero::before { content: ""; position: absolute; z-index: -2; inset: 8% -28vw 4% 57%; border-radius: 48% 0 0 48%; background: linear-gradient(145deg, #e5f3ef 0%, #f4eedf 72%, transparent 100%); }
.hero-orb { position: absolute; z-index: -1; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.hero-orb-one { width: 290px; height: 290px; top: 35px; right: 9%; border: 1px solid rgba(40,125,121,.14); animation: orbit-drift 9s ease-in-out infinite; }
.hero-orb-two { width: 160px; height: 160px; right: 40%; bottom: 38px; background: rgba(231,169,62,.1); animation: orbit-drift 7s ease-in-out -3s infinite reverse; }
.hero-pointer-glow { position: absolute; z-index: 0; width: 540px; height: 540px; left: var(--spotlight-x, 72%); top: var(--spotlight-y, 35%); border-radius: 50%; background: radial-gradient(circle, rgba(40,125,121,.15) 0, rgba(231,169,62,.07) 35%, transparent 70%); filter: blur(4px); opacity: .85; pointer-events: none; transform: translate(-50%,-50%); transition: left .32s ease-out, top .32s ease-out; }
.landing-hero > *, .landing-hero-copy, .product-preview-wrap, .product-preview, .preview-topbar > div, .preview-score-row > *, .preview-insight > div { min-width: 0; }
.landing-hero-copy { position: relative; z-index: 2; animation: landing-rise .7s cubic-bezier(.2,.7,.2,1) both; }
.landing-kicker { display: flex; align-items: center; gap: 9px; margin-bottom: 20px; color: var(--teal); font-size: .71rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.landing-kicker span { width: 24px; height: 2px; border-radius: 2px; background: var(--gold); }
.landing-hero h1 { max-width: 680px; margin-bottom: 25px; font-size: clamp(3.2rem, 5.7vw, 5.45rem); letter-spacing: -.06em; line-height: .96; }
.landing-hero h1 em { color: var(--teal); font-style: normal; }
.landing-lead { max-width: 600px; margin-bottom: 31px; color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.18rem); line-height: 1.7; }
.landing-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.landing-primary { min-height: 54px; padding: 13px 25px; }
.landing-primary span, .landing-final-cta .button span, .method-intro > a span { transition: transform .18s ease; }
.landing-primary:hover span, .landing-final-cta .button:hover span, .method-intro > a:hover span { transform: translateX(4px); }
.landing-login-link { color: var(--muted); font-size: .82rem; }
.landing-login-link strong { color: var(--teal); }
.landing-reassurance { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 28px; color: var(--muted); font-size: .72rem; font-weight: 650; }
.landing-reassurance i { display: inline-grid; place-items: center; width: 17px; height: 17px; margin-right: 3px; border-radius: 50%; color: #fff; background: var(--teal); font-size: .6rem; font-style: normal; }
.product-preview-wrap { position: relative; z-index: 2; animation: landing-rise .75s .12s cubic-bezier(.2,.7,.2,1) both; }
.preview-glow { position: absolute; inset: 12% -6% -4% 10%; border-radius: 45%; background: rgba(40,125,121,.17); filter: blur(45px); }
.product-preview { position: relative; width: min(580px, 100%); margin: auto; padding: 27px; border: 1px solid rgba(255,255,255,.82); border-radius: 25px; background: rgba(255,255,255,.93); box-shadow: 0 36px 80px rgba(23,49,77,.2); animation: preview-float 6s ease-in-out 1.1s infinite; backdrop-filter: blur(14px); }
.preview-topbar, .preview-topbar > div, .preview-score-row, .preview-insight { display: flex; align-items: center; }
.preview-topbar { justify-content: space-between; gap: 12px; padding-bottom: 21px; border-bottom: 1px solid var(--line); }
.preview-topbar > div { gap: 11px; }
.preview-logo { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; color: #fff; background: var(--navy); font-size: .7rem; font-weight: 850; }
.preview-topbar strong, .preview-topbar small { display: block; overflow-wrap: anywhere; }
.preview-topbar strong { font-size: .82rem; }
.preview-topbar small { color: var(--muted); font-size: .62rem; }
.preview-week { padding: 6px 9px; border-radius: 999px; color: var(--teal); background: var(--teal-soft); font-size: .61rem; font-weight: 800; }
.preview-score-row { gap: 29px; padding: 27px 15px 24px; }
.preview-score-ring { --preview-score-angle: 295.2deg; display: grid; flex: 0 0 auto; place-items: center; width: 128px; height: 128px; border-radius: 50%; background: conic-gradient(var(--teal) var(--preview-score-angle), #e7eeec 0); transform: rotate(-90deg); }
.preview-score-ring::before { content: ""; grid-area: 1/1; width: 102px; height: 102px; border-radius: 50%; background: #fff; }
.preview-score-ring > div { z-index: 1; grid-area: 1/1; text-align: center; transform: rotate(90deg); }
.preview-score-ring strong, .preview-score-ring small { display: block; }
.preview-score-ring strong { font-size: 1.65rem; line-height: 1; }
.preview-score-ring small { margin-top: 5px; color: var(--muted); font-size: .59rem; }
.preview-summary small, .preview-summary strong, .preview-summary span { display: block; }
.preview-summary small { color: var(--muted); font-size: .67rem; }
.preview-summary strong { margin: 2px 0 7px; font-size: 1.7rem; }
.preview-summary strong em { color: #97a1a7; font-size: .73rem; font-style: normal; }
.preview-summary span { color: var(--muted); font-size: .63rem; }
.preview-summary span b { color: #2a826c; }
.preview-subjects { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; padding: 22px 5px 24px; border-top: 1px solid var(--line); }
.preview-subjects > div { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; align-items: center; }
.preview-subjects span, .preview-subjects b { font-size: .63rem; }
.preview-subjects span { display: flex; align-items: center; color: var(--ink-2); font-weight: 700; }
.preview-subjects b { color: var(--muted); }
.preview-subjects > div > div { grid-column: 1 / -1; height: 5px; overflow: hidden; border-radius: 5px; background: #edf0f0; }
.preview-subjects > div > div i { display: block; width: var(--progress); height: 100%; border-radius: inherit; background: var(--teal); transform-origin: left; animation: progress-grow .9s var(--delay) ease-out both; }
.subject-dot { width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; }
.maths-dot { background: var(--gold); }.english-dot { background: var(--coral); }.verbal-dot { background: var(--teal); }.nvr-dot { background: var(--purple); }
.preview-insight { gap: 11px; padding: 14px 15px; border-radius: 12px; background: #f2f7f6; }
.preview-insight > span { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; color: #fff; background: var(--teal); }
.preview-insight small, .preview-insight strong { display: block; }
.preview-insight small { color: var(--muted); font-size: .58rem; }
.preview-insight strong { overflow-wrap: anywhere; font-size: .68rem; }
.floating-result-card { position: absolute; z-index: 4; right: -18px; bottom: 20px; display: flex; align-items: center; gap: 10px; padding: 13px 16px; border: 1px solid rgba(255,255,255,.9); border-radius: 13px; background: #fff; box-shadow: 0 18px 45px rgba(23,49,77,.18); animation: result-pop .5s .8s ease both, mini-float 4s 1.5s ease-in-out infinite; }
.floating-result-card > span { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 50%; color: #fff; background: var(--teal); font-size: .72rem; }
.floating-result-card small, .floating-result-card strong { display: block; }
.floating-result-card small { color: var(--muted); font-size: .57rem; }.floating-result-card strong { font-size: .7rem; }
.landing-proof { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 55px; width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.landing-proof > p { max-width: 190px; margin: 0; color: var(--muted); font-size: .7rem; font-weight: 700; line-height: 1.45; }
.landing-proof > div { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.landing-proof > div > span, .landing-section-heading > *, .landing-subject-grid > *, .method-section > *, .focus-card > *, .pricing-section > * { min-width: 0; }
.landing-proof span { color: var(--muted); font-size: .68rem; }.landing-proof strong { display: block; color: var(--ink); font-size: 1.2rem; }
.landing-section { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 108px 0; }
.landing-section-heading { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 80px; margin-bottom: 39px; }
.landing-section-heading h2 { max-width: 650px; margin: 0; font-size: clamp(2.15rem, 4vw, 3.5rem); }
.landing-section-heading > p { margin: 0; color: var(--muted); font-size: .9rem; }
.landing-subject-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.landing-subject-card { position: relative; overflow: hidden; min-height: 315px; padding: 29px 25px 25px; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.landing-subject-card::after { content: ""; position: absolute; width: 130px; height: 130px; right: -70px; bottom: -72px; border: 25px solid var(--subject-soft); border-radius: 50%; opacity: .75; transition: transform .3s ease; }
.landing-subject-card:hover { z-index: 2; border-color: var(--subject-color); box-shadow: 0 22px 50px rgba(23,49,77,.11); transform: translateY(-8px); }
.landing-subject-card:hover::after { transform: scale(1.18); }
.subject-verbal { --subject-color: var(--teal); --subject-soft: #d9eeea; }.subject-nvr { --subject-color: var(--purple); --subject-soft: #e5e1f4; }.subject-english { --subject-color: var(--coral); --subject-soft: #f5dfdb; }.subject-maths { --subject-color: var(--gold); --subject-soft: #f8e9ca; }
.subject-number { position: absolute; top: 20px; right: 21px; color: #a0a9ae; font-size: .65rem; font-weight: 850; }
.landing-subject-card .subject-icon { display: grid; place-items: center; width: 49px; height: 49px; margin-bottom: 42px; border-radius: 13px; color: var(--subject-color); background: var(--subject-soft); font-size: 1.15rem; font-weight: 850; }
.landing-subject-card h3 { margin-bottom: 11px; font-size: 1.15rem; }.landing-subject-card p { color: var(--muted); font-size: .78rem; }
.subject-skill { position: absolute; z-index: 1; bottom: 25px; left: 25px; color: var(--subject-color); font-size: .62rem; font-weight: 800; }
.method-section { position: relative; overflow: hidden; display: grid; grid-template-columns: .86fr 1.14fr; gap: 105px; width: min(1240px, calc(100% - 40px)); max-width: 100%; padding: 90px 72px; border-radius: 28px; color: rgba(255,255,255,.7); background: radial-gradient(circle at 5% 5%, rgba(40,125,121,.36), transparent 29%), linear-gradient(145deg, #122940, #1a3955); box-shadow: 0 25px 70px rgba(23,49,77,.16); }
.method-section::after { content: ""; position: absolute; width: 410px; height: 410px; left: -250px; bottom: -270px; border: 1px solid rgba(255,255,255,.07); border-radius: 50%; }
.method-intro { position: sticky; top: 125px; align-self: start; }.method-intro h2 { color: #fff; font-size: clamp(2.2rem, 3.8vw, 3.35rem); }.method-intro > p:not(.eyebrow) { font-size: .9rem; }
.method-intro > a { display: inline-flex; gap: 9px; align-items: center; margin-top: 20px; color: #f3c774; font-size: .82rem; font-weight: 800; }
.method-steps { position: relative; display: grid; gap: 13px; }
.method-journey-track { position: absolute; z-index: 0; top: 44px; bottom: 44px; left: 30px; width: 3px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.1); }
.method-journey-track > span { position: absolute; inset: 0 0 auto; height: 100%; border-radius: inherit; background: linear-gradient(180deg, var(--gold), #58b5a9); box-shadow: 0 0 18px rgba(88,181,169,.45); }
.method-steps article { position: relative; z-index: 1; display: grid; grid-template-columns: 63px 1fr; gap: 23px; align-items: start; padding: 25px 26px 25px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.method-steps article:last-child { border-bottom: 0; }.method-steps article > span { display: grid; place-items: center; width: 63px; height: 63px; border: 1px solid rgba(255,255,255,.15); border-radius: 17px; color: #f3c774; background: #17344f; font-size: .7rem; font-weight: 850; transition: background .2s, transform .2s; }
.method-steps article:hover > span { background: var(--teal); transform: scale(1.05); }.method-steps h3 { margin-bottom: 7px; color: #fff; font-size: 1.1rem; }.method-steps p { margin: 0; color: rgba(255,255,255,.58); font-size: .79rem; }
.focus-section { padding-top: 125px; padding-bottom: 125px; }.focus-card { display: grid; grid-template-columns: 1fr 1fr; gap: 85px; align-items: center; }
.focus-copy h2 { font-size: clamp(2.15rem, 4vw, 3.35rem); }.focus-copy ul { display: grid; gap: 20px; margin: 32px 0 0; padding: 0; list-style: none; }.focus-copy li { display: grid; grid-template-columns: 34px 1fr; gap: 13px; }.focus-copy li > span { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 50%; color: #fff; background: var(--teal); font-size: .68rem; }.focus-copy strong, .focus-copy small { display: block; }.focus-copy strong { font-size: .86rem; }.focus-copy small { margin-top: 3px; color: var(--muted); font-size: .72rem; }
.explanation-demo { position: relative; padding: 34px; border: 1px solid var(--line); border-radius: 23px; background: #fff; box-shadow: var(--shadow); }.explanation-demo::before { content: ""; position: absolute; z-index: -1; inset: 20px -20px -20px 20px; border-radius: inherit; background: var(--teal-soft); }
.demo-question { padding-bottom: 23px; border-bottom: 1px solid var(--line); }.demo-question > span { color: var(--teal); font-size: .63rem; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }.demo-question b, .demo-question p { display: block; }.demo-question b { margin-top: 8px; font-size: .85rem; }.demo-question p { margin: 18px 0 0; font-size: 1.45rem; font-weight: 800; letter-spacing: .08em; }
.demo-answer { display: flex; align-items: center; justify-content: space-between; margin: 20px 0; padding: 15px 17px; border-radius: 10px; color: #256957; background: #e8f5f0; }.demo-answer span { font-size: .7rem; font-weight: 800; }.demo-answer strong { font-size: 1.15rem; }
.demo-explanation { padding: 19px; border-left: 3px solid var(--gold); border-radius: 0 9px 9px 0; background: var(--gold-soft); }.demo-explanation small { color: #946724; font-size: .62rem; font-weight: 850; text-transform: uppercase; }.demo-explanation p { margin: 7px 0 0; color: #5e5141; font-size: .75rem; }
.pricing-section { display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 110px; align-items: center; padding-top: 100px; padding-bottom: 100px; }.pricing-copy h2 { max-width: 630px; font-size: clamp(2.2rem, 4vw, 3.7rem); }.pricing-copy > p:last-child { max-width: 650px; color: var(--muted); }
.landing-price-card { position: relative; padding: 37px; border-radius: 22px; color: rgba(255,255,255,.72); background: linear-gradient(145deg, #16314d, #1d405d); box-shadow: 0 25px 65px rgba(23,49,77,.2); }.price-label { position: absolute; top: 22px; right: 22px; padding: 5px 9px; border-radius: 999px; color: #17314d; background: var(--gold); font-size: .56rem; font-weight: 850; text-transform: uppercase; }.landing-price { display: flex; align-items: end; gap: 9px; margin: 17px 0 25px; }.landing-price strong { color: #fff; font-size: 3.6rem; line-height: .9; letter-spacing: -.06em; }.landing-price span { font-size: .72rem; }.landing-price-card ul { display: grid; gap: 10px; margin: 0 0 26px; padding: 0; list-style: none; font-size: .75rem; }.landing-price-card li::before { content: "✓"; margin-right: 9px; color: #f3c774; font-weight: 900; }.landing-price-card small { display: block; margin-top: 13px; color: rgba(255,255,255,.48); text-align: center; font-size: .6rem; }
.landing-final-cta { display: flex; align-items: center; justify-content: space-between; gap: 50px; width: min(1160px, calc(100% - 40px)); margin: 0 auto 25px; padding: 55px 60px; border-radius: 24px; color: rgba(255,255,255,.64); background: linear-gradient(130deg, #17314d, #245a68); }.landing-final-cta h2 { margin-bottom: 8px; color: #fff; font-size: clamp(1.8rem, 3vw, 2.8rem); }.landing-final-cta p:last-child { max-width: 650px; margin: 0; font-size: .82rem; }.landing-final-cta .button { flex: 0 0 auto; }
.landing-disclaimer { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 10px 0 55px; color: #98a1a8; text-align: center; font-size: .62rem; }
@keyframes landing-rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes orbit-drift { 0%,100% { transform: translate3d(0,0,0); } 50% { transform: translate3d(18px,-16px,0); } }
@keyframes preview-float { 0%,100% { transform: translateY(0) rotate(-.4deg); } 50% { transform: translateY(-9px) rotate(.3deg); } }
@keyframes mini-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes result-pop { from { opacity: 0; transform: scale(.82) translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes progress-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* Immersive landing experience */
@property --preview-score-angle {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
}
@property --score-angle {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
}
.dashboard-motion .preview-score-ring { --preview-score-angle: 0deg; transition: --preview-score-angle 1.15s cubic-bezier(.2,.75,.2,1); }
.dashboard-motion .preview-subjects > div > div i { animation: none; transform: scaleX(0); transition: transform .8s var(--delay) cubic-bezier(.2,.75,.2,1); }
.dashboard-motion .preview-insight, .dashboard-motion + .floating-result-card { opacity: 0; transform: translateY(12px); }
.dashboard-motion .preview-insight { transition: opacity .45s .7s ease, transform .5s .7s ease; }
.dashboard-motion + .floating-result-card { animation: none; transition: opacity .42s .88s ease, transform .46s .88s ease; }
.dashboard-motion.is-animated .preview-score-ring { --preview-score-angle: 295.2deg; }
.dashboard-motion.is-animated .preview-subjects > div > div i { transform: scaleX(1); }
.dashboard-motion.is-animated .preview-insight, .dashboard-motion.is-animated + .floating-result-card { opacity: 1; transform: none; }
.dashboard-motion.is-animated + .floating-result-card { animation: mini-float 4s 1.45s ease-in-out infinite; }

.product-preview-wrap {
    --scene-x: 0deg;
    --scene-y: 0deg;
    perspective: 1200px;
    transform: rotateX(var(--scene-x)) rotateY(var(--scene-y));
    transform-style: preserve-3d;
    transition: transform .28s cubic-bezier(.2,.7,.2,1);
    will-change: transform;
}
.preview-3d-plane { position: relative; transform: translateZ(34px); transform-style: preserve-3d; }
.depth-token { position: absolute; z-index: 5; display: grid; place-items: center; width: 86px; height: 86px; border: 1px solid rgba(255,255,255,.84); border-radius: 22px; background: rgba(255,255,255,.82); box-shadow: 0 22px 45px rgba(23,49,77,.14); pointer-events: none; transform: translate3d(var(--layer-x, 0), var(--layer-y, 0), 70px); transition: transform .22s ease-out; backdrop-filter: blur(11px); }
.depth-token span { position: absolute; top: 10px; left: 12px; color: #809099; font-size: .43rem; font-weight: 900; letter-spacing: .1em; }
.depth-token i { color: var(--navy); font-size: 1.5rem; font-style: normal; font-weight: 900; }
.depth-token-word { top: -38px; left: -25px; color: var(--teal); animation: depth-drift 6s ease-in-out infinite; }
.depth-token-word i { color: var(--teal); }
.depth-token-number { right: -28px; top: 17%; width: 78px; height: 78px; animation: depth-drift 7s -2s ease-in-out infinite reverse; }
.depth-token-number i { color: #a66f12; }
.depth-token-shape { right: 5%; bottom: -62px; width: 92px; height: 92px; animation: depth-drift 8s -4s ease-in-out infinite; }
.depth-token-shape svg { width: 60px; height: 60px; overflow: visible; }
.depth-token-shape path:first-child { fill: #e6e1f5; stroke: var(--purple); stroke-width: 2.5; }
.depth-token-shape path:last-child { fill: none; stroke: var(--purple); stroke-linecap: round; stroke-linejoin: round; stroke-width: 4; }
@keyframes depth-drift { 0%,100% { margin-top: 0; } 50% { margin-top: -10px; } }

.landing-motion [data-reveal] { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .75s cubic-bezier(.2,.7,.2,1); }
.landing-motion [data-reveal].is-visible { opacity: 1; transform: none; }

.journey-motion .method-journey-track > span { height: var(--journey-progress, 0%); transition: height .16s linear; }
.journey-motion [data-journey-step] { opacity: .42; transform: translateY(14px); transition: opacity .42s ease, transform .5s ease; }
.journey-motion [data-journey-step].is-active { opacity: 1; transform: none; }
.journey-motion [data-journey-step].is-active > span { border-color: rgba(243,199,116,.65); background: var(--teal); box-shadow: 0 9px 24px rgba(2,17,28,.22); }

.mini-mock-section { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(280px,.68fr) minmax(560px,1.32fr); gap: clamp(45px,7vw,100px); width: min(1240px, calc(100% - 40px)); max-width: 100%; padding: 86px 72px; border-radius: 30px; color: rgba(255,255,255,.72); background: radial-gradient(circle at 4% 8%, rgba(45,139,132,.42), transparent 31%), radial-gradient(circle at 91% 90%, rgba(124,104,181,.22), transparent 30%), linear-gradient(145deg,#10263c,#193851); box-shadow: 0 34px 90px rgba(23,49,77,.2); }
.mini-mock-section::before { content: ""; position: absolute; z-index: -1; width: 360px; height: 360px; top: -230px; right: -170px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; box-shadow: 0 0 0 55px rgba(255,255,255,.025), 0 0 0 110px rgba(255,255,255,.018); }
.mini-mock-intro { position: sticky; top: 115px; align-self: start; min-width: 0; }
.mini-mock-intro h2 { max-width: 470px; color: #fff; font-size: clamp(2.3rem,4vw,3.65rem); line-height: 1.03; }
.mini-mock-intro > p:not(.eyebrow) { max-width: 450px; color: rgba(255,255,255,.62); font-size: .88rem; }
.mini-subject-orbit { position: relative; width: 240px; height: 240px; margin: 47px auto 0; border: 1px solid rgba(255,255,255,.11); border-radius: 50%; animation: orbit-spin 24s linear infinite; }
.mini-subject-orbit::before { content: ""; position: absolute; inset: 38px; border: 1px dashed rgba(255,255,255,.11); border-radius: 50%; }
.orbit-core, .orbit-item { position: absolute; display: grid; place-items: center; border-radius: 50%; font-weight: 900; }
.orbit-core { width: 82px; height: 82px; inset: 0; margin: auto; color: #fff; background: rgba(255,255,255,.1); box-shadow: inset 0 0 0 1px rgba(255,255,255,.13); font-size: 1.2rem; }
.orbit-item { width: 42px; height: 42px; color: #17314d; background: #fff; box-shadow: 0 12px 25px rgba(0,0,0,.17); font-size: .7rem; animation: orbit-counter 24s linear infinite; }
.orbit-english { top: -21px; left: 99px; color: var(--coral); }.orbit-maths { right: -21px; top: 99px; color: #a66f12; }.orbit-verbal { bottom: -21px; left: 99px; color: var(--teal); }.orbit-nvr { left: -21px; top: 99px; color: var(--purple); }
@keyframes orbit-spin { to { transform: rotate(360deg); } }
@keyframes orbit-counter { to { transform: rotate(-360deg); } }

.mini-mock-card { position: relative; min-width: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.65); border-radius: 24px; color: var(--ink); background: rgba(255,255,255,.97); box-shadow: 0 30px 70px rgba(2,13,24,.28); }
.mini-celebration { position: absolute; z-index: 12; inset: 0; overflow: hidden; pointer-events: none; }
.mini-celebration i { position: absolute; top: 78px; left: 50%; width: 7px; height: 13px; border-radius: 2px; background: var(--confetti-color, var(--teal)); opacity: 0; transform: translate3d(0,-25px,0) rotate(0deg); }
.mini-celebration.is-active i { animation: mini-confetti 1.35s var(--confetti-delay,0s) cubic-bezier(.18,.78,.28,1) both; }
.mini-mock-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 25px 15px; }
.mini-mock-head > div { display: flex; align-items: center; gap: 9px; }
.mini-mock-head strong { font-size: .82rem; }.mini-mock-head > span { color: var(--muted); font-size: .67rem; font-weight: 750; }
.mini-live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 5px rgba(40,125,121,.12); }
.mini-progress { height: 5px; background: #e9eeee; }.mini-progress > span { display: block; width: 25%; height: 100%; border-radius: 0 5px 5px 0; background: linear-gradient(90deg,var(--teal),#5bb2a5); transition: width .35s ease; }
.mini-question-form { min-width: 0; }
.mini-question { min-height: 485px; padding: 31px 34px 25px; }
.mini-question.mini-enter-forward { animation: mini-question-forward .32s cubic-bezier(.2,.72,.2,1) both; }
.mini-question.mini-enter-back { animation: mini-question-back .32s cubic-bezier(.2,.72,.2,1) both; }
.mini-question[hidden], .mini-results[hidden], .subject-details[hidden] { display: none !important; }
.mini-subject-tag { display: inline-flex; margin: 0 0 18px; padding: 6px 10px; border-radius: 999px; font-size: .58rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.subject-english-tag { color: #a84f43; background: #f8e8e4; }.subject-maths-tag { color: #8a5f15; background: #fbefda; }.subject-verbal-tag { color: #20736d; background: #e3f2ef; }.subject-nvr-tag { color: #6651a2; background: #ece9f8; }
.mini-question fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.mini-question legend { display: block; width: 100%; margin-bottom: 25px; color: var(--ink); font-family: "DM Serif Display", Georgia, serif; font-size: clamp(1.28rem,2.2vw,1.7rem); font-weight: 700; line-height: 1.36; }
.mini-question legend small { display: block; margin-bottom: 6px; color: var(--muted); font-family: Inter,Arial,sans-serif; font-size: .61rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.mini-question legend em { color: var(--teal); font-style: normal; }
.mini-options { display: grid; gap: 9px; }
.mini-options label { display: block; min-width: 0; cursor: pointer; }
.mini-options input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.mini-options label > span { display: flex; align-items: center; gap: 13px; min-height: 53px; padding: 10px 14px; border: 1px solid #d9e0e1; border-radius: 12px; color: var(--ink-2); background: #fff; font-size: .78rem; font-weight: 650; transition: border-color .18s, background .18s, box-shadow .18s, transform .18s; }
.mini-options label > span > b { display: grid; flex: 0 0 29px; place-items: center; width: 29px; height: 29px; border-radius: 8px; color: var(--teal); background: var(--teal-soft); font-size: .68rem; }
.mini-options label:hover > span { border-color: #9fc9c3; transform: translateX(3px); }
.mini-options input:focus-visible + span { outline: 3px solid rgba(40,125,121,.25); outline-offset: 2px; }
.mini-options input:checked + span { border-color: var(--teal); background: #f0f8f6; box-shadow: 0 8px 22px rgba(40,125,121,.09); }
.mini-options input:checked + span > b { color: #fff; background: var(--teal); }
.mini-number-options, .mini-word-options { grid-template-columns: repeat(5,minmax(0,1fr)); }
.mini-number-options label > span, .mini-word-options label > span { justify-content: center; flex-direction: column; gap: 7px; padding: 12px 7px; text-align: center; }
.mini-word-puzzle { display: block; margin-top: 17px; padding: 15px; border-radius: 12px; color: var(--navy); background: #f1f5f5; font-family: Inter,Arial,sans-serif; font-size: clamp(1rem,2vw,1.3rem); font-weight: 900; letter-spacing: .08em; text-align: center; }
.mini-nvr-sequence { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 5px; max-width: 480px; margin: -6px auto 22px; padding: 16px; border: 1px solid #e1e6e7; border-radius: 15px; background: #f8faf9; }
.mini-nvr-sequence > span { color: #9ba5aa; font-weight: 850; }.mini-nvr-sequence svg { width: 100%; max-height: 105px; }
.mini-nvr-sequence polygon, .mini-diagram-options polygon { fill: #fff; stroke: #173a5e; stroke-linejoin: round; stroke-width: 2.5; }
.mini-nvr-sequence svg.filled polygon, .mini-diagram-options svg.filled polygon { fill: #d9eeea; }
.mini-nvr-sequence path, .mini-diagram-options path { fill: none; stroke: #aa7419; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; }
.mini-nvr-sequence circle, .mini-diagram-options circle { fill: var(--purple); stroke: none; }
.mini-diagram-options { grid-template-columns: repeat(5,minmax(0,1fr)); gap: 7px; }
.mini-diagram-options label > span { position: relative; justify-content: center; min-height: 112px; padding: 19px 7px 8px; }
.mini-diagram-options label > span > b { position: absolute; top: 7px; left: 7px; width: 23px; height: 23px; flex-basis: 23px; font-size: .58rem; }
.mini-diagram-options svg { width: 72px; height: 72px; }
.mini-controls { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; min-height: 80px; padding: 14px 25px; border-top: 1px solid var(--line); background: #fbfcfb; }
.mini-controls > span { color: var(--muted); text-align: center; font-size: .65rem; }
.mini-back { min-height: 44px; padding: 8px 5px; border: 0; color: var(--teal); background: transparent; font-weight: 800; cursor: pointer; }
.mini-controls .button { min-height: 45px; padding: 9px 17px; }
.mini-controls .button:disabled { cursor: not-allowed; filter: grayscale(.4); opacity: .45; transform: none; }
.mini-results { padding: 34px; }
.mini-results.is-revealed { animation: mini-results-in .5s cubic-bezier(.2,.72,.2,1) both; }
.mini-result-hero { display: grid; grid-template-columns: 122px 1fr; align-items: center; gap: 27px; margin-bottom: 28px; }
.mini-result-hero h3 { margin-bottom: 5px; font-size: 1.7rem; }.mini-result-hero p:last-child { margin: 0; color: var(--muted); font-size: .78rem; }
.mini-score-ring { display: grid; place-items: center; width: 118px; height: 118px; border-radius: 50%; background: conic-gradient(var(--teal) var(--score-angle,0deg),#e7eeec 0); transition: --score-angle .8s cubic-bezier(.2,.75,.2,1); }
.mini-score-ring::before { content: ""; grid-area: 1/1; width: 91px; height: 91px; border-radius: 50%; background: #fff; }.mini-score-ring > span { z-index: 1; grid-area: 1/1; text-align: center; }.mini-score-ring strong,.mini-score-ring small { display: block; }.mini-score-ring strong { font-size: 1.45rem; }.mini-score-ring small { color: var(--muted); font-size: .54rem; }
.mini-review-list { display: grid; gap: 10px; }
.mini-review-item { padding: 16px 18px; border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: 12px; background: #fff; }
.mini-results.is-revealed .mini-review-item { animation: mini-review-in .4s calc(.14s + (var(--review-order,0) * .07s)) ease both; }
.mini-review-item.is-wrong { border-left-color: var(--coral); }
.mini-review-item header { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 7px; }.mini-review-item header strong { font-size: .77rem; }.mini-review-item header span { color: var(--teal); font-size: .63rem; font-weight: 850; }.mini-review-item.is-wrong header span { color: var(--coral); }.mini-review-item p { margin: 0; color: var(--muted); font-size: .7rem; }.mini-review-item small { display: block; margin-top: 7px; color: var(--ink-2); font-size: .62rem; }
.mini-result-actions { display: flex; justify-content: flex-end; gap: 11px; margin-top: 25px; }
.mini-noscript { margin: 0; padding: 18px 25px; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; }
@keyframes mini-question-forward { from { opacity: 0; transform: translateX(18px); } to { opacity: 1; transform: none; } }
@keyframes mini-question-back { from { opacity: 0; transform: translateX(-18px); } to { opacity: 1; transform: none; } }
@keyframes mini-results-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes mini-review-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes mini-confetti {
    0% { opacity: 0; transform: translate3d(0,-25px,0) rotate(0deg); }
    12% { opacity: 1; }
    100% { opacity: 0; transform: translate3d(var(--confetti-x),310px,0) rotate(var(--confetti-rotate)); }
}

.landing-subject-card { --tilt-x: 0deg; --tilt-y: 0deg; transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)); transform-style: preserve-3d; }
.landing-subject-card:hover { transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(-8px); }
.subject-expand { position: absolute; z-index: 4; right: 25px; bottom: 21px; left: 25px; display: flex; align-items: center; justify-content: space-between; min-height: 39px; padding: 7px 0; border: 0; color: var(--subject-color); background: transparent; font-size: .62rem; font-weight: 850; text-align: left; cursor: pointer; }
.subject-expand span { display: grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; color: #fff; background: var(--subject-color); font-size: .8rem; transition: transform .2s ease; }
.landing-subject-card.is-expanded .subject-expand span { transform: rotate(45deg); }
.subject-details { position: absolute; z-index: 3; inset: 118px 16px 57px; display: flex; align-content: center; flex-wrap: wrap; gap: 8px; padding: 22px 10px 12px; border-radius: 13px; background: rgba(255,255,255,.97); animation: details-in .22s ease both; }
.subject-details strong { flex-basis: 100%; margin-bottom: 3px; color: var(--ink); font-size: .74rem; }.subject-details span { padding: 6px 8px; border-radius: 999px; color: var(--subject-color); background: var(--subject-soft); font-size: .58rem; font-weight: 800; }
@keyframes details-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.mobile-mini-cta { display: none; }

@media (max-width: 1050px) {
    .mini-mock-section { grid-template-columns: minmax(230px,.58fr) minmax(480px,1.42fr); gap: 42px; padding: 70px 44px; }
    .mini-subject-orbit { width: 190px; height: 190px; }.orbit-item { width: 38px; height: 38px; }.orbit-english,.orbit-verbal { left: 76px; }.orbit-maths,.orbit-nvr { top: 76px; }
}
@media (max-width: 780px) {
    .hero-pointer-glow { display: none; }
    .product-preview-wrap { transform: none !important; }
    .depth-token { transform: none !important; }.depth-token-word { left: -7px; }.depth-token-number { right: -7px; }.depth-token-shape { right: 12%; }
    .mini-mock-section { grid-template-columns: minmax(0,1fr); gap: 42px; width: min(100% - 24px,620px); padding: 51px 28px 28px; border-radius: 23px; }
    .mini-mock-intro { position: static; text-align: center; }.mini-mock-intro > p:not(.eyebrow) { margin-right: auto; margin-left: auto; }.mini-subject-orbit { margin-top: 39px; }
    .mini-question { min-height: 0; padding: 27px 22px 22px; }.mini-controls { grid-template-columns: 1fr 1fr; padding: 14px 20px; }.mini-controls > span { grid-column: 1/-1; grid-row: 1; }.mini-back,.mini-controls .button { width: 100%; }
    .mini-results { padding: 27px 22px; }
    .mobile-mini-cta { position: fixed; z-index: 80; right: 12px; bottom: max(12px,env(safe-area-inset-bottom)); left: 12px; display: flex; align-items: center; justify-content: space-between; min-height: 52px; padding: 10px 17px; border: 1px solid rgba(255,255,255,.2); border-radius: 15px; color: #fff; background: rgba(19,48,73,.96); box-shadow: 0 16px 40px rgba(11,31,48,.28); opacity: 0; pointer-events: none; transform: translateY(18px); transition: opacity .25s,transform .25s; backdrop-filter: blur(12px); }
    .mobile-mini-cta.is-visible { opacity: 1; pointer-events: auto; transform: none; }.mobile-mini-cta b { color: #f3c774; font-size: .62rem; }.mobile-mini-cta span { font-size: .75rem; font-weight: 850; }
}
@media (max-width: 560px) {
    .depth-token { width: 65px; height: 65px; border-radius: 17px; }.depth-token span { display: none; }.depth-token i { font-size: 1.1rem; }.depth-token-word { top: -22px; }.depth-token-number { top: 10%; }.depth-token-shape { bottom: -45px; width: 70px; height: 70px; }.depth-token-shape svg { width: 45px; height: 45px; }
    .mini-number-options,.mini-word-options { grid-template-columns: repeat(2,minmax(0,1fr)); }.mini-number-options label:last-child,.mini-word-options label:last-child { grid-column: 1/-1; }
    .mini-nvr-sequence { padding: 10px 5px; }.mini-nvr-sequence svg { max-height: 83px; }.mini-diagram-options { grid-template-columns: repeat(3,minmax(0,1fr)); }.mini-diagram-options label:nth-child(4),.mini-diagram-options label:nth-child(5) { grid-column: span 1; }.mini-diagram-options label > span { min-height: 100px; }
    .mini-result-hero { grid-template-columns: 95px 1fr; gap: 18px; }.mini-score-ring { width: 92px; height: 92px; }.mini-score-ring::before { width: 71px; height: 71px; }.mini-result-hero h3 { font-size: 1.35rem; }
    .mini-result-actions { align-items: stretch; flex-direction: column; }.mini-result-actions .button { width: 100%; }
    .method-journey-track { left: 23px; }
}
@media (prefers-reduced-motion: reduce) {
    .product-preview-wrap,.depth-token,.landing-subject-card { transform: none !important; }
    .landing-motion [data-reveal] { opacity: 1; transform: none; }
    .hero-pointer-glow { display: none; }
    .journey-motion [data-journey-step], .dashboard-motion .preview-insight, .dashboard-motion + .floating-result-card { opacity: 1; transform: none; }
    .journey-motion .method-journey-track > span { height: 100%; }
    .dashboard-motion .preview-score-ring { --preview-score-angle: 295.2deg; }
    .dashboard-motion .preview-subjects > div > div i { transform: scaleX(1); }
}

/* Legal and privacy information */
.legal-page { max-width: 880px; margin: 0 auto; }
.legal-heading { margin-bottom: 32px; padding: 38px 42px; border-radius: 20px; color: rgba(255,255,255,.72); background: linear-gradient(135deg, #15304b, #204661); box-shadow: var(--shadow); }
.legal-heading h1 { color: var(--white); }
.legal-heading > p:last-child { margin: 0; font-size: .78rem; }
.legal-page section { margin-bottom: 16px; padding: 28px 32px; border: 1px solid var(--line); border-radius: 15px; background: var(--white); }
.legal-page section h2 { font-size: 1.28rem; }
.legal-page section p:last-child, .legal-page section ul:last-child { margin-bottom: 0; }
.legal-page li { margin-bottom: 7px; }
.child-privacy-summary { margin: 16px 0; padding: 16px 18px; border: 1px solid #b9ddd7; border-radius: 12px; color: #245f59; background: #eef8f4; }
.child-privacy-summary strong { display: block; margin-bottom: 5px; color: var(--ink); }
.child-privacy-summary p { margin: 0 0 7px; color: #496272; font-size: .84rem; line-height: 1.55; }
.child-privacy-summary a { font-weight: 700; }
.mock-privacy-summary { margin-top: 24px; }
.legal-table-wrap { max-width: 100%; margin: 16px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; -webkit-overflow-scrolling: touch; }
.legal-table { width: 100%; border-collapse: collapse; }
.legal-table th, .legal-table td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: .8rem; }
.legal-table th { color: var(--muted); background: #f4f6f5; font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; }
.legal-table tr:last-child td { border-bottom: 0; }
.cancellation-form { margin: 18px 0 0; padding: 18px 20px; border-left: 4px solid var(--teal); color: var(--ink-2); background: var(--teal-soft); }

/* Account settings */
.account-intro { max-width: 760px; margin-bottom: 32px; }
.account-intro > p:last-child { color: var(--muted); }
.account-settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.settings-card { min-width: 0; padding: 30px; border: 1px solid var(--line); border-radius: 17px; background: var(--white); box-shadow: 0 10px 30px rgba(23,49,77,.045); }
.settings-card-wide { grid-column: 1 / -1; }
.settings-card-heading { display: grid; grid-template-columns: 38px 1fr; gap: 13px; align-items: start; margin-bottom: 22px; }
.settings-card-heading > span { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; color: var(--white); background: var(--navy); font-size: .7rem; font-weight: 850; }
.settings-card-heading h2 { margin-bottom: 4px; font-size: 1.35rem; }
.settings-card-heading p { margin: 0; color: var(--muted); font-size: .78rem; }
.readonly-field { margin-bottom: 12px; padding: 11px 13px; border-radius: 9px; background: #f4f6f5; }
.readonly-field small, .readonly-field strong { display: block; }
.readonly-field small { color: var(--muted); font-size: .65rem; text-transform: uppercase; letter-spacing: .05em; }
.readonly-field strong { color: var(--ink-2); font-size: .88rem; }
.settings-form { display: grid; gap: 7px; }
.settings-form label { margin-top: 7px; color: var(--ink-2); font-size: .76rem; font-weight: 750; }
.settings-form input { width: 100%; min-height: 44px; padding: 9px 12px; border: 1px solid #ccd5da; border-radius: 9px; color: var(--ink); background: #fff; }
.settings-form input:focus { outline: 0; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(40,125,121,.11); }
.settings-form .button { justify-self: start; margin-top: 13px; }
.settings-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.danger-zone { border-color: #edcbc7; background: #fffafa; }
.danger-zone .settings-card-heading > span { background: #a8463e; }
.danger-note { margin: 0; padding: 14px 16px; border-radius: 9px; color: #783a34; background: #fbe9e7; font-size: .82rem; }
.deletion-form { max-width: 560px; }

/* Authentication */
.auth-page { background: var(--navy); }
.auth-page .site-header, .auth-page .site-footer { display: none; }
.auth-page .page-shell { width: 100%; min-height: 100vh; margin: 0; padding: 0; }
.auth-layout { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(410px, .88fr); }
.auth-story {
    position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center;
    padding: clamp(50px, 8vw, 130px); color: rgba(255,255,255,.75);
    background: radial-gradient(circle at 20% 25%, rgba(44, 139, 131, .42), transparent 32%), linear-gradient(145deg, #10263e, #1b3a57);
}
.auth-story::before, .auth-story::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.08); transform: rotate(35deg); }
.auth-story::before { width: 520px; height: 520px; right: -260px; top: -150px; }
.auth-story::after { width: 420px; height: 420px; left: -250px; bottom: -220px; }
.auth-brand-lockup { position: absolute; z-index: 2; top: 38px; left: clamp(28px, 8vw, 130px); display: flex; align-items: center; gap: 10px; color: #fff; }
.auth-brand-lockup:hover { color: #fff; }
.auth-brand-lockup img { width: 39px; height: 39px; border-radius: 11px; }
.auth-brand-lockup strong, .auth-brand-lockup small { display: block; line-height: 1.15; }
.auth-brand-lockup strong { font-size: .83rem; }.auth-brand-lockup small { margin-top: 3px; color: rgba(255,255,255,.55); font-size: .56rem; text-transform: uppercase; letter-spacing: .08em; }
.auth-story h1 { max-width: 760px; color: var(--white); }
.auth-story > p:not(.eyebrow) { max-width: 580px; font-size: 1.13rem; }
.story-stats { display: flex; gap: 36px; margin-top: 42px; }
.story-stats span { font-size: .75rem; letter-spacing: .05em; text-transform: uppercase; }
.story-stats strong { display: block; color: var(--gold); font-size: 1.7rem; letter-spacing: -.03em; }
.auth-card { align-self: center; width: min(480px, calc(100% - 50px)); margin: 50px auto; padding: 45px; border-radius: 22px; background: var(--white); box-shadow: 0 30px 80px rgba(2, 14, 28, .25); }
.auth-card h2 { font-size: 2rem; }
.register-card { margin-top: 35px; margin-bottom: 35px; padding-top: 35px; padding-bottom: 35px; }
.stack-form { display: grid; gap: 8px; margin-top: 27px; }
.stack-form label, .editor-form label { margin-top: 8px; color: var(--ink-2); font-size: .79rem; font-weight: 750; }
.stack-form input, .editor-form input:not([type="checkbox"]), .editor-form select, .editor-form textarea {
    width: 100%; min-height: 46px; padding: 11px 13px; border: 1px solid #cfd8dc; border-radius: 9px; color: var(--ink); background: #fff;
    outline: none; transition: border .15s, box-shadow .15s;
}
.stack-form input:focus, .editor-form input:focus, .editor-form select:focus, .editor-form textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(40, 125, 121, .11); }
.stack-form .button { margin-top: 15px; }
.auth-switch { margin: 23px 0 0; text-align: center; color: var(--muted); font-size: .87rem; }
.auth-switch a { font-weight: 750; }
.auth-help { margin: 12px 0 0; text-align: center; color: var(--muted); font-size: .76rem; line-height: 1.5; }
.auth-help a { font-weight: 700; }
.reset-card .button { margin-top: 22px; }
.auth-status-icon { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 22px; border-radius: 50%; color: #fff; background: var(--teal); font-size: 1.15rem; font-weight: 900; }
.auth-status-icon.warning { background: var(--coral); }
.trial-note { margin: 16px 0 -8px; padding: 11px 13px; border-radius: 9px; color: #496272; background: var(--teal-soft); font-size: .77rem; }
.field-help { color: var(--muted); font-size: .74rem; line-height: 1.4; }
.field-help ul { margin: 4px 0; padding-left: 19px; }
.field-error { color: #a4443b; font-size: .78rem; font-weight: 650; }
.form-alert { margin: 16px 0; padding: 11px 13px; border-radius: 8px; color: #8b372f; background: #fff0ee; font-size: .84rem; }

/* Dashboard */
.dashboard-hero {
    position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 50px;
    min-height: 330px; padding: 58px 64px; border-radius: 26px; color: rgba(255,255,255,.75);
    background: radial-gradient(circle at 75% 110%, rgba(55, 151, 139, .35), transparent 37%), linear-gradient(135deg, #132c46, #1d3d5b);
    box-shadow: 0 22px 55px rgba(23, 49, 77, .16);
}
.dashboard-hero::after { content: ""; position: absolute; width: 450px; height: 450px; right: -210px; top: -240px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; }
.dashboard-hero h1 { color: var(--white); font-size: clamp(2.15rem, 4vw, 3.45rem); }
.dashboard-hero > div:first-child > p:not(.eyebrow) { max-width: 620px; }
.dashboard-hero .button { margin-top: 14px; }
.hero-progress { display: grid; align-content: center; justify-items: center; position: relative; z-index: 1; }
.progress-ring { display: grid; place-items: center; width: 174px; height: 174px; border-radius: 50%; background: conic-gradient(var(--gold) calc(var(--value) * 1%), rgba(255,255,255,.12) 0); }
.progress-ring::before { content: ""; grid-area: 1/1; width: 138px; height: 138px; border-radius: 50%; background: #1a3956; }
.progress-ring span { z-index: 1; grid-area: 1/1; text-align: center; }
.progress-ring strong, .progress-ring small { display: block; }
.progress-ring strong { color: var(--white); font-size: 2.1rem; }
.progress-ring small { color: #b9c9d5; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.hero-progress p { margin: 14px 0 0; font-size: .8rem; }
.access-banner { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin: 22px 0 0; padding: 22px 26px; border: 1px solid #d7dfdf; border-radius: 16px; background: var(--white); box-shadow: 0 8px 24px rgba(23,49,77,.04); }
.access-banner.trial { border-color: #bcded5; background: #f2faf7; }
.access-banner.subscriber { border-color: #d2cdec; background: #f7f5ff; }
.access-banner.complimentary { border-color: #bcded5; background: #f2faf7; }
.access-banner h2 { margin-bottom: 4px; font-size: 1.18rem; }
.access-banner p { margin-bottom: 0; color: var(--muted); font-size: .8rem; }
.access-banner .eyebrow { margin-bottom: 5px; }
.access-banner .button { flex: 0 0 auto; }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 22px 0 64px; }
.summary-card { display: flex; align-items: center; gap: 16px; padding: 21px 24px; border: 1px solid var(--line); border-radius: 15px; background: var(--white); box-shadow: 0 8px 24px rgba(23, 49, 77, .045); }
.metric-icon { display: grid; place-items: center; width: 45px; height: 45px; border-radius: 12px; font-size: 1.2rem; font-weight: 800; }
.metric-icon.accuracy { color: #257a67; background: #e2f3ec; }
.metric-icon.papers { color: #5c5592; background: #eceafa; }
.metric-icon.attempts { color: #9c6525; background: var(--gold-soft); }
.summary-card small, .summary-card strong { display: block; }
.summary-card small { color: var(--muted); font-size: .73rem; }
.summary-card strong { font-size: 1.6rem; line-height: 1.15; }
.summary-card strong em { color: #94a0a9; font-size: .85rem; font-style: normal; font-weight: 600; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin: 0 0 22px; }
.section-heading h2, .section-heading p { margin-bottom: 0; }
.section-heading > a { padding-bottom: 5px; font-size: .84rem; font-weight: 750; }
.section-heading > a span { margin-left: 6px; }
.section-heading.compact { margin-bottom: 18px; }
.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.topic-card { position: relative; overflow: hidden; min-height: 267px; padding: 24px; border: 1px solid var(--line); border-top: 4px solid var(--topic); border-radius: 16px; color: var(--ink); background: var(--white); transition: transform .18s, box-shadow .18s; }
.topic-card:hover { color: var(--ink); transform: translateY(-4px); box-shadow: var(--shadow); }
.topic-card.verbal, .mock-card.verbal, .detail-hero.verbal { --topic: #397f9e; --topic-soft: #e7f2f7; }
.topic-card.nvr, .mock-card.nvr, .detail-hero.nvr { --topic: #7164a8; --topic-soft: #eceafa; }
.topic-card.english, .mock-card.english, .detail-hero.english { --topic: #b06a58; --topic-soft: #faeae5; }
.topic-card.maths, .mock-card.maths, .detail-hero.maths { --topic: #358575; --topic-soft: #e4f3ed; }
.topic-top { display: flex; align-items: center; justify-content: space-between; }
.topic-icon { display: grid; place-items: center; width: 43px; height: 43px; border-radius: 12px; color: var(--topic); background: var(--topic-soft); font-size: 1.1rem; font-weight: 800; }
.topic-short { color: #9aa4ab; font-size: .66rem; font-weight: 800; letter-spacing: .13em; }
.topic-card h3 { margin: 20px 0 22px; }
.topic-numbers strong, .topic-numbers span { display: block; }
.topic-numbers strong { font-size: 1.7rem; }
.topic-numbers span, .topic-card > small { color: var(--muted); font-size: .7rem; }
.progress-track { height: 6px; margin: 16px 0 9px; overflow: hidden; border-radius: 10px; background: #edf0f0; }
.progress-track span { display: block; height: 100%; border-radius: inherit; background: var(--topic); }
.recent-section { margin-top: 66px; }
.result-list { overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: var(--white); }
.result-row { display: grid; grid-template-columns: 12px minmax(0, 1fr) 90px 24px; align-items: center; gap: 17px; min-height: 76px; padding: 13px 22px; color: var(--ink); border-bottom: 1px solid var(--line); }
.result-row:last-child { border-bottom: 0; }
.result-row:hover { color: var(--ink); background: #fbfcfb; }
.topic-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--teal); }
.topic-dot.verbal { background: #397f9e; }.topic-dot.nvr { background: #7164a8; }.topic-dot.english { background: #b06a58; }.topic-dot.maths { background: #358575; }
.result-name strong, .result-name small, .result-score strong, .result-score small { display: block; }
.result-name small, .result-score small { color: var(--muted); font-size: .7rem; }
.result-score { text-align: right; }
.result-score strong { font-size: 1.15rem; }
.row-arrow { color: #9aa4ab; }
.empty-state { width: 100%; padding: 58px 30px; border: 1px dashed #ccd5d7; border-radius: 16px; text-align: center; background: rgba(255,255,255,.6); }
.empty-state > span { display: block; color: var(--teal); font-size: 2.2rem; }
.empty-state h3 { margin: 9px 0 5px; }
.empty-state p { color: var(--muted); }

/* Library and detail */
.page-intro { max-width: 760px; margin-bottom: 38px; }
.page-intro > p:last-child { color: var(--muted); font-size: 1.05rem; }
.filter-tabs { display: flex; gap: 8px; margin-bottom: 30px; overflow-x: auto; padding-bottom: 2px; }
.filter-tabs a { flex: 0 0 auto; padding: 9px 15px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); background: var(--white); font-size: .8rem; font-weight: 700; }
.filter-tabs a:hover, .filter-tabs a[aria-current="page"] { color: var(--white); border-color: var(--navy); background: var(--navy); }
.difficulty-tabs { margin-top: -18px; }
.difficulty-tabs a[aria-current="page"] { border-color: var(--teal); background: var(--teal); }
.mock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.mock-card { position: relative; overflow: hidden; display: flex; flex-direction: column; min-height: 420px; padding: 27px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: 0 10px 28px rgba(23,49,77,.045); }
.mock-card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--topic); }
.mock-card-top { display: flex; justify-content: space-between; align-items: center; }
.mock-card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.topic-pill, .status { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: .65rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.topic-pill { color: var(--topic); background: var(--topic-soft); }
.difficulty-pill { display: inline-flex; padding: 5px 9px; border-radius: 999px; color: #39505f; background: #edf2f4; font-size: .65rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.difficulty-easy { color: #276957; background: #e5f4ed; }
.difficulty-medium { color: #316185; background: #e8f1f8; }
.difficulty-hard { color: #8a5720; background: #fff0d7; }
.difficulty-challenging { color: #8e443d; background: #fde8e5; }
.status { color: #7a858d; background: #f0f2f2; }
.status.done { color: #26715f; background: #e3f3ed; }
.mock-symbol { position: absolute; right: 22px; top: 68px; color: var(--topic-soft); font-size: 5rem; font-weight: 900; line-height: 1; }
.mock-card h2 { position: relative; margin-top: 38px; font-size: 1.45rem; }
.mock-card > p { position: relative; min-height: 64px; color: var(--muted); font-size: .85rem; }
.mock-meta { display: flex; flex-wrap: wrap; gap: 14px; padding: 13px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); font-size: .73rem; }
.best-score { display: grid; grid-template-columns: 1fr auto; align-items: center; margin: 14px 0; }
.best-score span, .best-score small { color: var(--muted); font-size: .69rem; }
.best-score strong { grid-row: span 2; color: var(--topic); font-size: 1.55rem; }
.best-score small { grid-column: 1; }
.card-button { margin-top: auto; color: var(--white); background: var(--topic); }
.card-button:hover { color: var(--white); filter: brightness(.92); }
.back-link { display: inline-flex; margin-bottom: 25px; color: var(--muted); font-size: .82rem; font-weight: 700; }
.detail-hero { display: grid; grid-template-columns: 160px minmax(0, 1fr) 260px; align-items: center; gap: 35px; padding: 45px; border: 1px solid var(--line); border-top: 5px solid var(--topic); border-radius: 22px; background: var(--white); box-shadow: var(--shadow); }
.detail-symbol { display: grid; place-items: center; aspect-ratio: 1; border-radius: 22px; color: var(--topic); background: var(--topic-soft); font-size: 3.5rem; font-weight: 900; }
.detail-copy .topic-pill { margin-bottom: 14px; }
.detail-copy h1 { font-size: clamp(2rem, 3.5vw, 3rem); margin-bottom: 12px; }
.detail-copy > p { color: var(--muted); }
.detail-facts { display: flex; gap: 27px; margin-top: 25px; color: var(--muted); font-size: .75rem; }
.detail-facts strong { color: var(--ink); font-size: 1rem; }
.start-panel { padding: 25px; border-radius: 15px; text-align: center; background: #f5f7f6; }
.start-panel > span, .start-panel > strong, .start-panel > small { display: block; }
.best-label { color: var(--muted); font-size: .7rem; text-transform: uppercase; }
.big-score { margin: 4px 0; color: var(--topic); font-size: 2.6rem; }
.ready-mark { color: var(--topic); font-size: 2.1rem; }
.start-panel > small { margin: 5px 0 19px; color: var(--muted); }
.start-panel .button { margin-top: 19px; }
.limit-note { margin: 8px 0 2px; color: var(--muted); font-size: .76rem; }
.detail-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 28px; }
.info-panel { padding: 33px; border: 1px solid var(--line); border-radius: 17px; background: var(--white); }
.info-panel > p:not(.eyebrow) { color: var(--muted); }
.instruction-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; counter-reset: steps; }
.instruction-list li { position: relative; min-height: 29px; padding-left: 40px; counter-increment: steps; }
.instruction-list li::before { content: counter(steps); position: absolute; left: 0; top: -2px; display: grid; place-items: center; width: 27px; height: 27px; border-radius: 50%; color: var(--teal); background: var(--teal-soft); font-size: .7rem; font-weight: 800; }

/* Membership */
.membership-intro { max-width: 830px; }
.membership-status { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin: -6px 0 30px; padding: 22px 25px; border: 1px solid #d5dede; border-radius: 16px; background: var(--white); }
.membership-status.trial { border-color: #bcded5; background: #f2faf7; }
.membership-status.subscriber { border-color: #cfc8e9; background: #f7f5ff; }
.membership-status.complimentary { border-color: #bcded5; background: #f2faf7; }
.membership-status h2, .membership-status p { margin-bottom: 0; }
.membership-status h2 { font-size: 1.28rem; }
.membership-status p { margin-top: 5px; color: var(--muted); font-size: .8rem; }
.status-kicker { color: var(--teal); font-size: .66rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.price-card { position: relative; padding: 35px; border: 1px solid var(--line); border-radius: 21px; background: var(--white); box-shadow: 0 12px 34px rgba(23,49,77,.055); }
.price-card.featured { border: 2px solid var(--teal); box-shadow: 0 18px 45px rgba(40,125,121,.12); }
.popular-label { position: absolute; right: 24px; top: 24px; padding: 5px 10px; border-radius: 999px; color: #fff; background: var(--teal); font-size: .64rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.price { display: flex; align-items: baseline; gap: 9px; margin: 25px 0; }
.price strong { color: var(--ink); font-size: 2.55rem; line-height: 1; }
.price span { color: var(--muted); font-size: .76rem; }
.feature-list { display: grid; gap: 12px; min-height: 170px; margin: 0 0 28px; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 27px; color: #3c5369; font-size: .88rem; }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 19px; height: 19px; border-radius: 50%; color: #fff; background: var(--teal); font-size: .66rem; font-weight: 900; }
.disabled-button { cursor: not-allowed; opacity: .58; pointer-events: none; }
.billing-note { display: block; margin-top: 14px; color: var(--muted); text-align: center; font-size: .67rem; line-height: 1.45; }
.promotion-note { margin: 22px 0 0; padding: 15px 18px; border: 1px solid #d7e4df; border-radius: 12px; color: var(--muted); background: #f1f7f5; text-align: center; font-size: .76rem; }
.promotion-note strong { color: var(--ink-2); }
.membership-fineprint { margin-top: 30px; padding: 30px 34px; border-radius: 18px; background: #eef3f3; }
.membership-fineprint > div { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.membership-fineprint h2 { font-size: 1.3rem; }
.membership-fineprint p { margin: 0; color: var(--muted); font-size: .77rem; }
.membership-fineprint strong { color: var(--ink-2); }

/* Exam */
.page-shell.exam-shell { width: min(1500px, calc(100% - 28px)); padding-top: 25px; }
.exam-header { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-bottom: 20px; }
.exam-header h1 { margin: 0; font-size: 1.7rem; }
.timer { min-width: 144px; padding: 10px 17px; border: 1px solid #c7dbd6; border-radius: 12px; text-align: center; background: var(--teal-soft); }
.timer small, .timer strong { display: block; }
.timer small { color: var(--muted); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }
.timer strong { color: var(--teal); font-variant-numeric: tabular-nums; font-size: 1.45rem; }
.timer.urgent { border-color: #efc0b9; background: #fff0ee; }
.timer.urgent strong { color: var(--coral); }
.exam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 430px; gap: 18px; align-items: start; }
.paper-viewer { height: calc(100vh - 155px); min-height: 650px; overflow: hidden; display: flex; flex-direction: column; border: 1px solid #cfd6d8; border-radius: 14px; background: #e9ebec; box-shadow: var(--shadow); }
.paper-toolbar { flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; min-height: 42px; padding: 8px 14px; color: var(--ink-2); background: var(--white); border-bottom: 1px solid var(--line); font-size: .72rem; font-weight: 750; }
.paper-toolbar a { font-size: .7rem; }
.paper-viewer object { flex: 1 1 auto; width: 100%; min-height: 0; }
.pdf-fallback { padding: 50px; text-align: center; }
.answer-panel { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--white); box-shadow: var(--shadow); }
.answer-panel-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 22px 16px; border-bottom: 1px solid var(--line); }
.answer-panel-head h2, .answer-panel-head p { margin-bottom: 0; }
.answer-panel-head h2 { font-size: 1.2rem; }
.answer-panel-head > span { padding: 5px 9px; border-radius: 999px; color: var(--teal); background: var(--teal-soft); font-size: .69rem; font-weight: 800; }
.answer-grid { max-height: calc(100vh - 325px); min-height: 480px; overflow-y: auto; padding: 10px 22px; }
.answer-question { display: grid; grid-template-columns: 31px 1fr; align-items: center; margin: 0; padding: 12px 0; border: 0; border-bottom: 1px solid #edf0f0; }
.answer-question legend { float: left; width: 31px; padding: 0; font-size: .78rem; font-weight: 800; }
.option-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.option-row label { cursor: pointer; }
.option-row input { position: absolute; opacity: 0; pointer-events: none; }
.option-row span { display: grid; place-items: center; height: 35px; border: 1px solid #d8dfe1; border-radius: 8px; color: var(--ink-2); font-size: .74rem; font-weight: 750; transition: .12s; }
.option-row input:hover + span { border-color: var(--teal); }
.option-row input:focus-visible + span { outline: 3px solid rgba(40,125,121,.2); }
.option-row input:checked + span { color: var(--white); border-color: var(--teal); background: var(--teal); }
.answer-submit { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 18px; padding: 16px 22px; border-top: 1px solid var(--line); background: #f8f9f8; }
.answer-submit p { margin: 0; color: var(--muted); font-size: .7rem; white-space: nowrap; }
.answer-submit p strong { color: var(--coral); }

/* Native online exam */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.native-exam-shell { width: min(1340px, calc(100% - 34px)); }
.native-exam-header { position: sticky; z-index: 20; top: 76px; padding: 13px 0; background: rgba(251,250,246,.96); backdrop-filter: blur(12px); }
.native-exam-header > div:first-child { display: flex; align-items: baseline; gap: 13px; flex-wrap: wrap; }
.native-exam-header .eyebrow { flex-basis: 100%; }
.question-position { color: var(--muted); font-size: .75rem; }
.exam-status { display: flex; align-items: center; gap: 13px; }
.answered-status { color: var(--muted); font-size: .72rem; font-weight: 700; }
.answered-status strong { color: var(--teal); }
.native-exam { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; align-items: start; }
.native-exam.has-passage { grid-template-columns: minmax(360px, .86fr) minmax(520px, 1.14fr); }
.passage-panel { position: sticky; top: 168px; max-height: calc(100vh - 190px); overflow-y: auto; padding: 35px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); }
.passage-block { display: none; }
.passage-block.active { display: block; }
.passage-block h2 { margin-bottom: 24px; font-size: 1.5rem; }
.passage-block > p:not(.eyebrow) { color: #354a60; font-family: Georgia, "Times New Roman", serif; font-size: 1.03rem; line-height: 1.75; }
.passage-block > p:last-child { margin-bottom: 0; }
.question-workspace { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); }
.question-jump { display: grid; grid-template-columns: repeat(10, minmax(34px, 1fr)); gap: 7px; padding: 15px 18px; border-bottom: 1px solid var(--line); background: #f5f7f6; }
.question-jump button { display: grid; place-items: center; min-height: 35px; padding: 4px; border: 1px solid #d5dddf; border-radius: 8px; color: var(--ink-2); background: var(--white); cursor: pointer; font-size: .7rem; font-weight: 800; }
.question-jump button:hover { border-color: var(--teal); }
.question-jump button.answered { color: #246f5e; border-color: #acd9cb; background: #e7f5ef; }
.question-jump button[aria-current="step"] { color: var(--white); border-color: var(--navy); background: var(--navy); box-shadow: 0 5px 14px rgba(23,49,77,.18); }
.question-stage { min-height: 550px; }
.online-question { padding: 35px 38px 42px; }
.exam-ready .online-question:not(.active) { display: none; }
.online-question-head { display: flex; align-items: center; gap: 10px; margin-bottom: 19px; }
.question-report-link, .quiet-report-link { color: var(--muted); font-size: .72rem; font-weight: 750; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.question-report-link { margin-left: auto; }
.question-report-link:hover, .quiet-report-link:hover { color: var(--teal); }
.quiet-report-link { display: inline-flex; justify-content: center; margin-top: 14px; }
.result-report-link { display: inline-flex; margin: 12px 0 0; }
.question-number { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; color: var(--white); background: var(--navy); font-size: .85rem; font-weight: 850; }
.question-section { display: inline-flex; padding: 5px 9px; border-radius: 999px; color: var(--teal); background: var(--teal-soft); font-size: .63rem; font-weight: 800; letter-spacing: .04em; }
.online-question h2 { margin-bottom: 28px; font-size: clamp(1.25rem, 2vw, 1.7rem); line-height: 1.35; letter-spacing: -.02em; }
.question-diagram { margin: 0 0 25px; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.question-diagram img { display: block; width: 100%; height: auto; }
.native-options { display: grid; gap: 10px; margin: 0; padding: 0; border: 0; }
.native-choice { position: relative; display: flex; align-items: center; gap: 14px; min-height: 54px; padding: 10px 14px; border: 1px solid #d7dee0; border-radius: 11px; cursor: pointer; background: #fff; transition: border .14s, background .14s, transform .14s; }
.native-choice:hover { border-color: var(--teal); transform: translateX(2px); }
.native-choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice-letter { flex: 0 0 32px; display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid #ccd6d8; border-radius: 50%; color: var(--ink-2); background: #f6f8f7; font-size: .75rem; font-weight: 850; }
.choice-text { color: #31475d; font-size: .9rem; }
.native-choice:has(input:checked) { border-color: var(--teal); background: #edf7f4; box-shadow: 0 0 0 2px rgba(40,125,121,.08); }
.native-choice input:checked + .choice-letter { color: var(--white); border-color: var(--teal); background: var(--teal); }
.native-choice:has(input:focus-visible) { outline: 3px solid rgba(40,125,121,.2); }
.native-options:has(.diagram-choice) { grid-template-columns: repeat(5, 1fr); }
.native-choice.diagram-choice { justify-content: center; min-height: 50px; padding: 8px; }
.question-controls { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; min-height: 79px; padding: 15px 20px; border-top: 1px solid var(--line); background: #f7f8f7; }
.question-controls p { margin: 0; color: var(--muted); text-align: center; font-size: .7rem; }
.question-controls p strong { color: var(--coral); }
.question-controls #finish-paper { grid-column: 3; }

/* Native worked explanations */
.worked-review { margin-top: 48px; scroll-margin-top: 110px; }
.worked-list { display: grid; gap: 14px; }
.worked-item { padding: 27px 30px; border: 1px solid var(--line); border-left: 5px solid; border-radius: 14px; background: var(--white); box-shadow: 0 7px 20px rgba(23,49,77,.035); }
.worked-item.correct { border-left-color: #3b9a79; }
.worked-item.wrong { border-left-color: var(--coral); }
.worked-question-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.worked-question-head .review-number { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 9px; color: var(--white); background: var(--navy); }
.worked-status { margin-left: auto; color: var(--muted); font-size: .68rem; font-weight: 800; }
.worked-item.correct .worked-status { color: #2f7d66; }
.worked-item.wrong .worked-status { color: #ad5347; }
.worked-item h3 { margin-bottom: 17px; font-size: 1.03rem; line-height: 1.4; letter-spacing: -.01em; }
.review-diagram { display: block; width: min(100%, 880px); margin: 0 0 20px; border: 1px solid var(--line); border-radius: 10px; }
.answer-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.answer-comparison > div { padding: 11px 13px; border-radius: 9px; background: #f4f6f5; }
.answer-comparison .correct-answer { background: #e7f5ef; }
.answer-comparison small, .answer-comparison strong { display: block; }
.answer-comparison small { color: var(--muted); font-size: .62rem; text-transform: uppercase; letter-spacing: .06em; }
.answer-comparison strong { color: var(--ink-2); font-size: .82rem; }
.worked-explanation { display: grid; grid-template-columns: 45px 1fr; gap: 13px; align-items: start; padding: 15px; border-radius: 10px; background: var(--gold-soft); }
.worked-explanation span { display: grid; place-items: center; min-height: 27px; border-radius: 8px; color: #85591e; background: #f5d38f; font-size: .65rem; font-weight: 850; }
.worked-explanation p { margin: 0; color: #56462f; font-size: .82rem; }

/* Results and history */
.result-hero { display: flex; align-items: center; gap: 40px; padding: 45px; border-radius: 22px; color: rgba(255,255,255,.72); background: linear-gradient(135deg, #15304b, #204661); box-shadow: var(--shadow); }
.result-hero h1 { margin-bottom: 8px; color: var(--white); }
.score-disc { flex: 0 0 170px; display: grid; place-items: center; align-content: center; width: 170px; height: 170px; border: 8px solid rgba(255,255,255,.16); border-radius: 50%; background: rgba(0,0,0,.1); }
.score-disc.excellent { border-color: #5ac4a4; }.score-disc.good { border-color: #efb957; }.score-disc.building { border-color: #d87a69; }
.score-disc strong, .score-disc span { display: block; }
.score-disc strong { color: var(--white); font-size: 2.25rem; line-height: 1; }
.score-disc span { color: #b9cad6; font-size: .72rem; }
.result-actions { display: flex; gap: 10px; margin-top: 22px; }
.result-hero .button.secondary { color: var(--white); border-color: rgba(255,255,255,.25); background: transparent; }
.answer-review { margin-top: 48px; }
.review-key { display: flex; gap: 16px; color: var(--muted); font-size: .7rem; }
.review-key span::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 6px; border-radius: 50%; }
.key-correct::before { background: #3b9a79; }.key-wrong::before { background: var(--coral); }
.review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.review-item { position: relative; display: grid; grid-template-columns: 33px 1fr 1fr 20px; align-items: center; min-height: 68px; padding: 10px 13px; border: 1px solid var(--line); border-left: 4px solid; border-radius: 10px; background: var(--white); }
.review-item.correct { border-left-color: #3b9a79; }.review-item.wrong { border-left-color: var(--coral); }
.review-number { font-weight: 800; }
.review-item small, .review-item strong { display: block; }
.review-item small { color: var(--muted); font-size: .58rem; }
.review-mark { font-size: 1.1rem; font-weight: 900; }
.correct .review-mark { color: #3b9a79; }.wrong .review-mark { color: var(--coral); }
.explanation-callout { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-top: 25px; padding: 22px 25px; border-radius: 14px; background: var(--gold-soft); }
.explanation-callout > div { display: flex; align-items: center; gap: 16px; }
.explanation-callout > div > span { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 50%; color: #8c5b21; background: #f8d798; font-weight: 900; }
.explanation-callout p { margin: 0; font-size: .82rem; }
.history-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: 0 10px 30px rgba(23,49,77,.04); -webkit-overflow-scrolling: touch; }
.history-table { width: 100%; border-collapse: collapse; white-space: nowrap; }
.history-table th { padding: 14px 19px; color: var(--muted); background: #f4f6f5; font-size: .68rem; letter-spacing: .08em; text-align: left; text-transform: uppercase; }
.history-table td { padding: 17px 19px; border-top: 1px solid var(--line); font-size: .82rem; }
.history-table td small { color: var(--muted); }
.history-table td:last-child { text-align: right; }
.history-table td:last-child a { font-weight: 750; }
.table-score { display: inline-block; min-width: 48px; font-size: 1rem; font-weight: 800; }
.table-sub { display: block; }

/* Staff editor */
.staff-intro { max-width: none; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.form-heading { max-width: 750px; margin-bottom: 30px; }
.form-heading > p:last-child { color: var(--muted); }
.editor-form { padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: var(--shadow); }
.report-heading { margin-top: 12px; }
.issue-report-form { max-width: 760px; }
.field-group { display: grid; gap: 8px; margin-bottom: 22px; }
.field-group label { margin-top: 0; }
.field-group small { color: var(--muted); font-size: .72rem; }
.field-group .errorlist { margin: 0; padding-left: 18px; color: #a34239; font-size: .74rem; }
.editor-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 24px; }
.field-wrap { display: grid; align-content: start; gap: 6px; }
.field-wrap.field-wide { grid-column: 1 / -1; }
.editor-form textarea { resize: vertical; }
.editor-form input[type="file"] { padding: 8px; color: var(--muted); background: #f7f8f7; }
.checkbox-field { grid-template-columns: 25px 1fr; align-items: center; }
.checkbox-field label { grid-column: 2; grid-row: 1; margin: 0; }
.checkbox-field input { grid-column: 1; grid-row: 1; width: 18px; height: 18px; accent-color: var(--teal); }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 32px; padding-top: 23px; border-top: 1px solid var(--line); }
.admin-note { margin-top: 22px; padding: 18px 21px; border-left: 4px solid var(--teal); border-radius: 8px; color: var(--muted); background: var(--teal-soft); font-size: .82rem; }
.table-actions { display: inline-flex; gap: 12px; font-weight: 750; }
.question-editor-heading { display: flex; align-items: center; justify-content: space-between; gap: 30px; max-width: none; }
.editor-topic { flex: 0 0 auto; padding: 8px 13px; border-radius: 999px; color: var(--teal); background: var(--teal-soft); font-size: .72rem; font-weight: 800; }
.question-editor-list { display: grid; gap: 22px; }
.question-editor-card { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: 0 8px 24px rgba(23,49,77,.04); }
.question-editor-top { display: flex; align-items: center; justify-content: space-between; padding: 13px 20px; color: var(--white); background: var(--navy); font-size: .78rem; font-weight: 800; }
.delete-question { display: inline-flex; align-items: center; gap: 6px; color: #d8e0e6; font-size: .68rem; font-weight: 650; }
.delete-question input { accent-color: var(--coral); }
.question-editor-grid { display: grid; grid-template-columns: 100px minmax(180px, 1fr) repeat(5, minmax(100px, 1fr)) 130px; gap: 14px; padding: 23px; }
.question-editor-grid .field-wrap { min-width: 0; }
.question-editor-grid .field-wide { grid-column: 1 / -1; }
.question-editor-grid input:not([type="checkbox"]), .question-editor-grid select, .question-editor-grid textarea { width: 100%; min-height: 42px; padding: 9px 11px; border: 1px solid #cfd8dc; border-radius: 8px; }
.option-field label { display: inline-flex; align-items: center; justify-content: center; width: 23px; height: 23px; margin: 0 0 3px; border-radius: 50%; color: var(--white); background: var(--teal); }
.existing-question-image { display: block; width: min(900px, calc(100% - 46px)); margin: 0 23px 23px; border: 1px solid var(--line); border-radius: 10px; }
.sticky-save { position: sticky; z-index: 15; bottom: 15px; display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 25px; padding: 14px 18px; border: 1px solid #cfd8dc; border-radius: 13px; background: rgba(255,255,255,.95); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.sticky-save > span { color: var(--muted); font-size: .72rem; }
.sticky-save > div { display: flex; gap: 9px; }

@media (max-width: 1050px) {
    .header-inner { gap: 22px; }
    .account-name { display: none; }
    .plan-chip { display: none; }
    .main-nav { gap: 17px; }
    .public-nav { gap: 16px; }
    .landing-hero { grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr); gap: 42px; min-height: 650px; }
    .landing-hero h1 { font-size: clamp(3rem, 5.7vw, 4.5rem); }
    .landing-subject-grid { grid-template-columns: repeat(2, 1fr); }
    .method-section { gap: 60px; padding: 70px 50px; }
    .focus-card { gap: 55px; }
    .pricing-section { gap: 60px; }
    .topic-grid { grid-template-columns: repeat(2, 1fr); }
    .mock-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .detail-hero { grid-template-columns: 130px 1fr; }
    .start-panel { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 5px 20px; text-align: left; }
    .start-panel .button { grid-column: 2; grid-row: 1 / span 3; margin: 0; }
    .review-grid { grid-template-columns: repeat(2, 1fr); }
    .exam-layout { grid-template-columns: minmax(0, 1fr) 360px; }
    .native-exam.has-passage { grid-template-columns: 1fr; }
    .passage-panel { position: relative; top: auto; max-height: 520px; }
    .question-editor-grid { grid-template-columns: repeat(5, minmax(90px, 1fr)); }
    .question-editor-grid .field-wrap:not(.option-field) { grid-column: span 2; }
    .question-editor-grid .field-wide { grid-column: 1 / -1 !important; }
}

@media (max-width: 780px) {
    .header-inner { width: min(100% - 24px, 1160px); min-height: 66px; }
    .brand small { display: none; }
    .main-nav, .account-menu { display: none; }
    .mobile-nav { display: block; margin-left: auto; }
    .public-nav { margin-left: auto; gap: 12px; }
    .public-nav .public-section-link { display: none; }
    .public-nav .public-login { padding-left: 0; border-left: 0; }
    .public-nav .public-signup { min-height: 38px; padding: 7px 12px; }
    .page-shell { width: min(100% - 24px, 1160px); max-width: 100%; padding: 30px 0 58px; }
    .landing-shell { width: 100%; padding: 0; }
    .site-footer { width: min(100% - 24px, 1160px); display: grid; gap: 12px; }
    .site-footer > div, .site-footer nav { justify-content: flex-start; }
    .auth-layout { grid-template-columns: 1fr; padding: 0 0 24px; }
    .auth-story { min-height: 245px; padding: 92px 24px 48px; }
    .auth-story h1 { margin-bottom: 10px; font-size: 2rem; }
    .auth-story > p:not(.eyebrow) { margin-bottom: 0; font-size: .88rem; }
    .auth-brand-lockup { top: 24px; left: 24px; }
    .story-stats { display: none; }
    .auth-card { width: calc(100% - 24px); margin: -24px auto 26px; padding: 28px 22px; position: relative; z-index: 2; }
    .landing-hero { overflow: clip; grid-template-columns: minmax(0, 1fr); gap: 58px; width: min(100% - 24px, 620px); min-height: auto; padding: 72px 0 95px; }
    .landing-hero::before { inset: 47% -45vw 0 8%; }
    .landing-hero h1 { font-size: clamp(3.15rem, 13vw, 4.75rem); }
    .landing-lead { font-size: 1rem; }
    .product-preview-wrap, .product-preview { width: 100%; max-width: 100%; }
    .product-preview { padding: 22px; }
    .preview-topbar { flex-wrap: wrap; }
    .floating-result-card { right: -5px; bottom: -28px; }
    .landing-proof { grid-template-columns: 1fr; gap: 18px; padding: 28px 0; }
    .landing-proof > p { max-width: none; }
    .landing-proof > div { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; }
    .landing-section { padding: 78px 0; }
    .landing-section-heading { grid-template-columns: 1fr; gap: 18px; }
    .landing-subject-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .landing-subject-card { min-height: 300px; }
    .method-section { grid-template-columns: minmax(0, 1fr); gap: 45px; width: min(100% - 24px, 620px); padding: 50px 28px; border-radius: 22px; }
    .method-intro { position: static; }
    .focus-card { grid-template-columns: minmax(0, 1fr); gap: 55px; }
    .explanation-demo { margin-right: 18px; }
    .pricing-section { grid-template-columns: minmax(0, 1fr); gap: 45px; }
    .landing-price-card { width: min(100%, 430px); }
    .landing-final-cta { overflow: hidden; align-items: flex-start; flex-direction: column; max-width: calc(100% - 24px); padding: 42px 30px; }
    .legal-heading { padding: 30px 24px; }
    .legal-page section { padding: 23px 20px; }
    .dashboard-hero { grid-template-columns: 1fr; padding: 37px 28px; }
    .access-banner, .membership-status { align-items: flex-start; flex-direction: column; }
    .access-banner .button, .membership-status .button { width: 100%; }
    .hero-progress { grid-template-columns: auto 1fr; justify-items: start; gap: 16px; }
    .progress-ring { width: 100px; height: 100px; }
    .progress-ring::before { width: 78px; height: 78px; }
    .progress-ring strong { font-size: 1.35rem; }
    .hero-progress p { margin: 0; }
    .summary-grid { grid-template-columns: 1fr; margin-bottom: 45px; }
    .topic-grid, .mock-grid, .detail-columns { grid-template-columns: 1fr; }
    .pricing-grid, .membership-fineprint > div { grid-template-columns: 1fr; }
    .account-settings-grid { grid-template-columns: 1fr; }
    .settings-card-wide { grid-column: auto; }
    .settings-card { padding: 23px 20px; }
    .settings-card-heading { grid-template-columns: 34px 1fr; gap: 10px; }
    .settings-card-heading > span { width: 32px; height: 32px; }
    .settings-form .button, .settings-actions .button { width: 100%; justify-self: stretch; }
    .settings-actions { align-items: stretch; flex-direction: column; }
    .price-card { padding: 29px 24px; }
    .feature-list { min-height: 0; }
    .topic-card { min-height: 230px; }
    .detail-hero { grid-template-columns: 80px 1fr; padding: 26px; gap: 20px; }
    .detail-symbol { font-size: 2rem; }
    .detail-copy { grid-column: 1 / -1; }
    .detail-facts { gap: 14px; flex-wrap: wrap; }
    .start-panel { display: block; text-align: center; }
    .start-panel .button { margin-top: 17px; }
    .exam-header { align-items: flex-end; flex-wrap: wrap; gap: 12px; }
    .exam-header > div:first-child, .paper-toolbar > *, .answer-panel-head > * { min-width: 0; }
    .exam-header h1 { font-size: 1.2rem; }
    .exam-layout { display: flex; flex-direction: column; }
    .paper-viewer { width: 100%; max-width: 100%; min-height: 70vh; height: 70vh; }
    .paper-toolbar, .answer-panel-head { gap: 10px; flex-wrap: wrap; }
    .answer-panel { width: 100%; max-width: 100%; }
    .answer-grid { max-height: none; }
    .native-exam-header { top: 66px; }
    .native-exam-header .eyebrow { display: none; }
    .native-exam-header > div:first-child { display: block; }
    .native-exam-header h1 { margin-bottom: 3px; }
    .answered-status { display: none; }
    .passage-panel { padding: 25px 21px; }
    .question-jump { grid-template-columns: repeat(5, 1fr); }
    .online-question { padding: 27px 21px 32px; }
    .question-stage { min-height: 470px; }
    .question-controls { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    .question-controls .button { width: 100%; min-width: 0; padding-inline: 12px; }
    .question-controls p { grid-column: 1 / -1; grid-row: 1; }
    .question-controls #finish-paper { grid-column: 2; }
    .answer-comparison { grid-template-columns: 1fr; }
    .question-editor-heading { align-items: flex-start; flex-direction: column; }
    .question-editor-grid { grid-template-columns: 1fr; padding: 18px; }
    .question-editor-grid .field-wrap, .question-editor-grid .field-wide { grid-column: auto !important; }
    .sticky-save { align-items: stretch; flex-direction: column; bottom: 8px; }
    .sticky-save > div { display: grid; grid-template-columns: 1fr 1fr; }
    .result-hero { flex-direction: column; align-items: flex-start; padding: 30px; }
    .score-disc { width: 130px; height: 130px; flex-basis: 130px; }
    .review-grid { grid-template-columns: 1fr; }
    .explanation-callout { align-items: flex-start; flex-direction: column; }
    .staff-intro { align-items: flex-start; flex-direction: column; }
    .editor-form { padding: 23px 18px; }
    .editor-grid { grid-template-columns: 1fr; }
    .field-wrap.field-wide { grid-column: auto; }
    .stack-form input, .stack-form select, .stack-form textarea,
    .settings-form input, .settings-form select, .settings-form textarea,
    .editor-form input, .editor-form select, .editor-form textarea { font-size: 16px; }
}

@media (max-width: 480px) {
    .brand { gap: 7px; }
    .brand strong { font-size: .8rem; }
    .brand-mark { width: 35px; height: 35px; border-radius: 9px; }
    .header-inner { gap: 10px; }
    .mobile-nav-panel nav { grid-template-columns: 1fr; }
    .mobile-nav-panel nav a { min-height: 58px; }
    .public-nav { gap: 8px; }
    .public-nav .public-login { font-size: .72rem !important; }
    .public-nav .public-signup { padding: 6px 9px; font-size: .7rem; }
    .landing-hero { padding-top: 54px; }
    .landing-hero h1 { font-size: clamp(2.9rem, 14vw, 3.75rem); }
    .landing-actions { align-items: stretch; flex-direction: column; }
    .landing-primary { width: 100%; }
    .landing-login-link { text-align: center; }
    .landing-reassurance { gap: 10px 16px; justify-content: flex-start; font-size: .62rem; }
    .product-preview { padding: 18px; border-radius: 20px; }
    .preview-score-row { gap: 18px; flex-wrap: wrap; padding-left: 0; padding-right: 0; }
    .preview-score-ring { width: 105px; height: 105px; }.preview-score-ring::before { width: 83px; height: 83px; }.preview-score-ring strong { font-size: 1.35rem; }
    .preview-subjects { grid-template-columns: 1fr; }
    .floating-result-card { display: none; }
    .landing-subject-grid { grid-template-columns: 1fr; }
    .landing-subject-card { min-height: 275px; }
    .method-steps article { grid-template-columns: 49px 1fr; gap: 15px; padding-right: 0; }.method-steps article > span { width: 49px; height: 49px; border-radius: 13px; }.method-steps::before { left: 24px; }
    .explanation-demo { padding: 23px; }
    .landing-price-card { padding: 31px 25px; }
    .dashboard-hero { padding: 31px 22px; border-radius: 20px; }
    .summary-card { padding: 18px; }
    .topic-card, .mock-card { border-radius: 15px; }
    .button { min-height: 48px; }
    .story-stats span:nth-child(3) { display: none; }
    .section-heading { align-items: flex-start; }
    .section-heading > a { font-size: .72rem; }
    .result-row { grid-template-columns: 9px 1fr 60px; padding-left: 14px; padding-right: 14px; }
    .row-arrow { display: none; }
    .result-actions { align-items: stretch; flex-direction: column; }
    .exam-header .eyebrow { display: none; }
    .timer { min-width: 114px; }
    .answer-panel-head { padding-left: 14px; padding-right: 14px; }
    .answer-grid { padding: 8px 12px; }
    .answer-submit { grid-template-columns: 1fr; }
    .answer-submit p { white-space: normal; text-align: center; }
    .native-options:has(.diagram-choice) { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .section-heading { flex-wrap: wrap; gap: 12px; }
    .sticky-save > div { grid-template-columns: 1fr; }
}

@media (max-width: 360px) {
    .brand strong { font-size: .73rem; }
    .public-nav .public-login { display: none; }
    .preview-week { display: none; }
    .landing-hero h1 { font-size: clamp(2.55rem, 14vw, 3.2rem); }
    .method-section, .landing-final-cta { padding-right: 21px; padding-left: 21px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@media print {
    .site-header, .site-footer, .messages { display: none; }
    .page-shell { width: 100%; padding: 0; }
}

/* Tuition marketplace */
.tuition-shell { --tuition-wash: #eef7f4; }
.narrow-shell { max-width: 900px; }
.tuition-hero {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, .7fr);
    align-items: center;
    gap: 60px;
    margin-bottom: 34px;
    padding: 64px;
    border: 1px solid #d7e7e2;
    border-radius: 28px;
    background:
        radial-gradient(circle at 90% 10%, rgba(231,169,62,.17), transparent 34%),
        linear-gradient(135deg, #f2f8f5, #fffdfa);
}
.tuition-hero::after {
    content: "11+";
    position: absolute;
    right: -25px;
    bottom: -75px;
    color: rgba(40,125,121,.055);
    font-size: 12rem;
    font-weight: 900;
    letter-spacing: -.1em;
}
.tuition-hero > * { position: relative; z-index: 1; min-width: 0; }
.tuition-hero h1 { max-width: 750px; }
.tuition-hero > div > p:not(.eyebrow) { max-width: 700px; color: var(--muted); font-size: 1.05rem; }
.tuition-hero-actions, .booking-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.safety-card { display: flex; gap: 18px; padding: 26px; border: 1px solid rgba(40,125,121,.2); border-radius: 20px; background: rgba(255,255,255,.82); box-shadow: 0 15px 35px rgba(23,49,77,.06); }
.safety-card .verified-icon { display: grid; flex: 0 0 43px; width: 43px; height: 43px; place-items: center; border-radius: 50%; color: white; background: var(--teal); font-weight: 900; }
.safety-card strong, .safety-card p { display: block; }.safety-card p { margin: 6px 0 9px; color: var(--muted); font-size: .84rem; }
.tutor-filters {
    display: grid;
    grid-template-columns: 1.35fr 1fr auto;
    align-items: end;
    gap: 14px;
    margin-bottom: 55px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: white;
    box-shadow: 0 12px 30px rgba(23,49,77,.05);
}
.tutor-filters label > span { display: block; margin: 0 0 6px 3px; color: var(--ink-2); font-size: .69rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.tutor-filters input, .tutor-filters select { width: 100%; min-height: 48px; padding: 10px 13px; border: 1px solid #ccd7d9; border-radius: 10px; color: var(--ink); background: white; }
.tutor-results { scroll-margin-top: 105px; }
.tutor-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.tutor-card { display: flex; min-width: 0; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: 20px; background: white; box-shadow: 0 14px 38px rgba(23,49,77,.06); transition: transform .2s ease, box-shadow .2s ease; }
.tutor-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.tutor-card-top { display: grid; grid-template-columns: 58px 1fr; gap: 15px; margin-bottom: 18px; }
.tutor-avatar { display: grid; flex: 0 0 auto; width: 58px; height: 58px; place-items: center; border: 1px solid #cce1db; border-radius: 18px; color: var(--teal); background: linear-gradient(145deg, var(--teal-soft), white); font-weight: 850; }
.tutor-card h3 { margin: 4px 0 4px; }.tutor-card h3 a { color: var(--ink); }.tutor-card-top p { margin: 0; color: var(--muted); font-size: .79rem; line-height: 1.42; }
.verified-badge { display: inline-flex; align-items: center; max-width: 100%; color: #276957; font-size: .63rem; font-weight: 850; letter-spacing: .02em; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 19px; }
.tag-row > span { padding: 5px 9px; border-radius: 999px; color: #246b67; background: var(--teal-soft); font-size: .64rem; font-weight: 750; }
.tutor-facts { display: grid; gap: 9px; margin: 0 0 20px; padding: 16px 0; border-block: 1px solid var(--line); }
.tutor-facts > div, .profile-facts > div, .booking-detail-card dl > div { display: grid; grid-template-columns: 90px 1fr; gap: 12px; }
.tutor-facts dt, .profile-facts dt, .booking-detail-card dt { color: var(--muted); font-size: .7rem; }
.tutor-facts dd, .profile-facts dd, .booking-detail-card dd { min-width: 0; margin: 0; overflow-wrap: anywhere; font-size: .78rem; font-weight: 700; }
.tutor-card-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; margin: auto 0 18px; }
.tutor-card-footer > div { min-width: 0; }.tutor-card-footer strong { display: block; font-size: 1.1rem; }.tutor-card-footer small { display: block; color: var(--muted); font-size: .65rem; }
.rating-line { margin: 0; text-align: right; }.rating-line strong { color: #9c6b18; }
.tutor-empty { margin-bottom: 40px; }
.tuition-trust-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; margin-top: 55px; border: 1px solid #d7e7e2; border-radius: 18px; background: #d7e7e2; }
.tuition-trust-strip > div { padding: 22px; background: #f5faf8; }.tuition-trust-strip strong, .tuition-trust-strip span { display: block; }.tuition-trust-strip span { margin-top: 5px; color: var(--muted); font-size: .72rem; }
.tutor-profile-hero { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; margin-bottom: 35px; padding: 45px; border: 1px solid #d7e7e2; border-radius: 24px; background: linear-gradient(135deg, #f4faf7, #fff); }
.tutor-profile-main { display: grid; grid-template-columns: 95px 1fr; align-items: center; gap: 25px; }.tutor-avatar-large { width: 95px; height: 95px; border-radius: 28px; font-size: 1.6rem; }
.tutor-profile-main h1 { margin: 7px 0; }.tutor-profile-main > div > p { color: var(--muted); }
.booking-summary-card { padding: 23px; border: 1px solid var(--line); border-radius: 18px; background: white; box-shadow: 0 12px 30px rgba(23,49,77,.06); }
.profile-price { display: flex; align-items: baseline; gap: 8px; }.profile-price strong { font-size: 2rem; }.profile-price span, .booking-summary-card > p, .booking-summary-card > small { color: var(--muted); font-size: .76rem; }
.booking-summary-card .button { margin: 10px 0; }
.tutor-profile-layout { display: grid; grid-template-columns: minmax(0, 1fr) 315px; align-items: start; gap: 30px; }
.tutor-profile-content { display: grid; gap: 22px; }.profile-section, .profile-safety-panel { padding: 31px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.profile-section > p:not(.eyebrow), .profile-section li { color: var(--ink-2); }.profile-facts { display: grid; gap: 10px; margin: 25px 0 0; padding-top: 22px; border-top: 1px solid var(--line); }
.profile-safety-panel { position: sticky; top: 100px; }.profile-safety-panel ul { display: grid; gap: 12px; margin: 20px 0; padding: 0; list-style: none; }.profile-safety-panel li { display: flex; gap: 9px; font-size: .78rem; }.profile-safety-panel li span { color: var(--teal); font-weight: 900; }.profile-safety-panel p { color: var(--muted); font-size: .72rem; }.profile-safety-panel a { display: block; margin-top: 10px; font-weight: 750; }.profile-safety-panel .report-link { margin-top: 20px; padding-top: 17px; border-top: 1px solid var(--line); color: #9c5147; font-size: .74rem; }
.tuition-review-list { display: grid; gap: 13px; }.tuition-review-list article { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: #fcfdfc; }.tuition-review-list article > div { display: flex; justify-content: space-between; gap: 15px; }.tuition-review-list article span { color: #9c6b18; font-weight: 800; }.tuition-review-list article p { margin: 10px 0; }.tuition-review-list article small, .muted-copy { color: var(--muted); }
.tuition-page-heading { margin-bottom: 28px; }.tuition-page-heading > p:not(.eyebrow) { max-width: 700px; color: var(--muted); }
.status-banner, .safety-notice, .no-payment-notice, .emergency-notice { display: flex; align-items: flex-start; gap: 11px 24px; margin-bottom: 24px; padding: 19px 22px; border: 1px solid #cfe3dc; border-radius: 15px; color: #276957; background: #eef8f4; }
.status-banner strong, .status-banner span, .no-payment-notice strong, .no-payment-notice span, .emergency-notice strong, .emergency-notice span { display: block; }.status-banner span, .no-payment-notice span, .emergency-notice span { font-size: .78rem; }
.status-rejected, .status-suspended, .emergency-notice { border-color: #efcbc5; color: #8d473e; background: #fff3f1; }
.status-submitted { border-color: #ead9b9; color: #76551b; background: #fff8e9; }
.availability-control { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin: -7px 0 25px; padding: 18px 21px; border: 1px solid var(--line); border-radius: 15px; background: white; }.availability-control strong, .availability-control span { display: block; }.availability-control span { margin-top: 3px; color: var(--muted); font-size: .7rem; }.paused-note { margin: 13px 0; padding: 12px; border-radius: 10px; color: #76551b; background: #fff4da; font-size: .75rem; font-weight: 750; }
.safety-notice { display: block; color: var(--ink); background: #fff9eb; border-color: #ecdcb9; }.safety-notice p { margin: 4px 0 0; color: var(--muted); font-size: .8rem; }
.tuition-form { display: grid; gap: 18px; }.tuition-form fieldset { display: grid; gap: 16px; min-width: 0; margin: 0; padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: white; }.tuition-form legend { padding: 0 7px; color: var(--ink); font-size: 1.05rem; font-weight: 850; }.fieldset-help { margin: -4px 0 2px; color: var(--muted); font-size: .75rem; }
.tuition-field { min-width: 0; }.tuition-field > label { display: block; margin: 0 0 6px 2px; color: var(--ink-2); font-size: .74rem; font-weight: 750; }.tuition-field input:not([type="checkbox"]):not([type="radio"]), .tuition-field select, .tuition-field textarea { display: block; width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #ccd7d9; border-radius: 10px; color: var(--ink); background: white; }.tuition-field textarea { min-height: 120px; resize: vertical; }
.tuition-field > small { display: block; margin: 5px 2px 0; color: var(--muted); font-size: .68rem; }.tuition-field ul { display: grid; gap: 7px; margin: 4px 0 0; padding: 0; list-style: none; }.tuition-field ul label { display: flex; align-items: center; gap: 8px; font-size: .78rem; }.tuition-field input[type="checkbox"], .tuition-field input[type="radio"] { width: 18px; height: 18px; flex: 0 0 auto; accent-color: var(--teal); }
div.tuition-choice-widget { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px; margin-top: 7px; }
div.tuition-choice-widget > div { min-width: 0; }
div.tuition-choice-widget label { display: flex; width: 100%; min-height: 48px; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid #d7e1e2; border-radius: 11px; color: var(--ink-2); background: #fbfdfc; font-size: .78rem; font-weight: 700; line-height: 1.3; cursor: pointer; transition: border-color .18s ease, background .18s ease, box-shadow .18s ease; }
div.tuition-choice-widget label:hover { border-color: #9fc5bb; background: #f4faf8; }
div.tuition-choice-widget label:has(input:checked) { border-color: var(--teal); background: var(--teal-soft); box-shadow: 0 0 0 2px rgba(40,125,121,.08); }
div.tuition-choice-widget input { margin: 0; }
div.tuition-rating-widget { grid-template-columns: repeat(5, minmax(0, 1fr)); }
div.tuition-rating-widget label { justify-content: center; white-space: nowrap; }
.lesson-format-card { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 1px solid #bcd9d1; border-radius: 12px; color: #225f53; background: #eff8f5; }
.lesson-format-card > span { display: grid; flex: 0 0 28px; width: 28px; height: 28px; place-items: center; border-radius: 50%; color: white; background: var(--teal); font-size: .78rem; font-weight: 900; }
.lesson-format-card strong, .lesson-format-card small { display: block; }
.lesson-format-card small { margin-top: 3px; color: #4c736b; font-size: .7rem; line-height: 1.4; }
.lesson-format-card.compact { min-height: 48px; padding: 9px 12px; }
.tuition-checkbox { display: grid; grid-template-columns: 20px 1fr; gap: 8px; align-items: start; }.tuition-checkbox > label { margin: 0; }.tuition-checkbox > small, .tuition-checkbox > .field-errors { grid-column: 2; }
.form-two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }.field-errors, .form-errors { color: #a14337; font-size: .73rem; }.field-errors ul, .form-errors ul { margin: 5px 0; padding-left: 18px; }.form-errors { padding: 14px 17px; border-radius: 10px; background: #fff0ed; }.legal-small { color: var(--muted); font-size: .7rem; }
.tuition-dashboard-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; margin-bottom: 28px; }.tuition-dashboard-heading > div > p:not(.eyebrow) { margin: 0; color: var(--muted); }
.verification-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0 0 45px; }.verification-grid article { display: grid; grid-template-columns: 38px 1fr; gap: 2px 11px; padding: 17px; border: 1px solid var(--line); border-radius: 14px; background: white; }.verification-grid article > span { display: grid; grid-row: 1 / 3; width: 38px; height: 38px; place-items: center; border-radius: 50%; color: var(--muted); background: #f0f2f3; font-weight: 850; }.verification-grid article.complete > span { color: white; background: var(--teal); }.verification-grid small { color: var(--muted); font-size: .64rem; }
.booking-list-section { margin-top: 20px; }.booking-list { display: grid; gap: 13px; }.booking-list article { display: grid; grid-template-columns: 66px minmax(0, 1fr) auto; align-items: center; gap: 20px; padding: 19px 22px; border: 1px solid var(--line); border-radius: 16px; background: white; }.booking-date { display: grid; width: 62px; height: 62px; place-items: center; align-content: center; border-radius: 14px; color: var(--teal); background: var(--teal-soft); }.booking-date strong, .booking-date span { display: block; line-height: 1.05; }.booking-date strong { font-size: 1.35rem; }.booking-date span { font-size: .65rem; text-transform: uppercase; }
.booking-list h2, .booking-list h3 { margin: 4px 0; font-size: 1rem; }.booking-list p { margin: 0; color: var(--muted); font-size: .74rem; }
.booking-status { display: inline-flex; width: fit-content; padding: 4px 8px; border-radius: 999px; color: #76551b; background: #fff1cf; font-size: .61rem; font-weight: 850; text-transform: uppercase; letter-spacing: .06em; }.booking-status.status-confirmed, .booking-status.status-completed, .booking-status.status-published { color: #276957; background: #e6f3ee; }.booking-status.status-declined, .booking-status.status-cancelled, .booking-status.status-rejected, .booking-status.status-no_show { color: #8d473e; background: #fdecea; }
.booking-detail-hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 22px; padding: 35px; border: 1px solid #d7e7e2; border-radius: 20px; background: linear-gradient(135deg, #f2f9f6, white); }.booking-detail-hero .eyebrow { margin-top: 13px; }.booking-detail-hero h1 { margin-bottom: 7px; }.booking-detail-hero p:last-child { margin: 0; color: var(--muted); }.booking-price-box { flex: 0 0 auto; text-align: right; }.booking-price-box > * { display: block; }.booking-price-box span, .booking-price-box small { color: var(--muted); font-size: .66rem; }.booking-price-box strong { font-size: 2rem; }
.booking-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }.booking-detail-card, .booking-actions-card, .booking-review-card { padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: white; }.booking-detail-card dl { display: grid; gap: 12px; margin: 20px 0 0; }.booking-actions-card { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-top: 18px; }.booking-actions-card p { margin: 0; color: var(--muted); }.booking-actions form { margin: 0; }.button.danger-outline { color: #9c5147; border: 1px solid #ddb9b3; background: white; }.button.text-button { min-height: 0; padding: 9px; color: var(--muted); background: transparent; box-shadow: none; }.booking-review-card { margin-top: 18px; }.booking-review-card h2 { margin-top: 13px; }
.booking-message-card { display: flex; min-width: 0; flex-direction: column; align-items: flex-start; background: linear-gradient(145deg, #f1f9f6, white); }
.booking-message-card h2 { margin: 4px 0 8px; }
.booking-message-card > p:not(.eyebrow) { color: var(--muted); }
.booking-message-card .button { margin: 8px 0; }
.thread-verification-card, .message-thread-shell { min-width: 0; padding: 34px; border: 1px solid var(--line); border-radius: 22px; background: white; box-shadow: 0 18px 45px rgba(23,49,77,.07); }
.thread-verification-card { text-align: center; }
.thread-verification-card > p { color: var(--muted); }
.thread-lock-mark { display: grid; width: 52px; height: 52px; margin: 0 auto 16px; place-items: center; border-radius: 16px; color: white; background: var(--teal); font-size: 1.25rem; font-weight: 900; box-shadow: 0 10px 25px rgba(40,125,121,.22); }
.verification-code-form { max-width: 430px; margin: 24px auto 12px; text-align: left; }
.verification-code-form input { text-align: center; font-size: 1.4rem !important; font-weight: 850; letter-spacing: .34em; }
.verification-code-form .button, .thread-resend-form .button { width: 100%; }
.thread-resend-form { max-width: 430px; margin: 0 auto 18px; }
.message-thread-header { display: flex; min-width: 0; align-items: flex-start; justify-content: space-between; gap: 24px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.message-thread-header > div { min-width: 0; }
.message-thread-header h1 { margin: 4px 0 7px; }
.message-thread-header p:last-child { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
.thread-secure-badge { flex: 0 0 auto; padding: 7px 11px; border-radius: 999px; color: #276957; background: var(--teal-soft); font-size: .68rem; font-weight: 850; }
.thread-safety-note { margin: 20px 0; padding: 15px 17px; border: 1px solid #ead9b9; border-radius: 13px; color: #76551b; background: #fff9eb; font-size: .76rem; line-height: 1.55; }
.message-list { display: grid; gap: 12px; min-width: 0; max-height: 560px; overflow-y: auto; padding: 5px 2px 20px; }
.message-row { display: flex; min-width: 0; justify-content: flex-start; }
.message-row-sent { justify-content: flex-end; }
.message-bubble { min-width: 0; max-width: min(76%, 610px); padding: 14px 16px; border: 1px solid var(--line); border-radius: 16px 16px 16px 4px; background: #f8faf9; overflow-wrap: anywhere; }
.message-row-sent .message-bubble { border-color: #bcd9d1; border-radius: 16px 16px 4px 16px; background: var(--teal-soft); }
.message-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 7px; }
.message-meta strong { font-size: .73rem; }
.message-meta time { color: var(--muted); font-size: .62rem; white-space: nowrap; }
.message-bubble > p { margin: 0; color: var(--ink-2); font-size: .82rem; line-height: 1.6; }
.message-bubble .message-hidden { color: var(--muted); font-style: italic; }
.message-report-link, .message-reported { display: inline-block; margin-top: 9px; color: #8d473e; font-size: .62rem; font-weight: 750; }
.message-reported { color: var(--muted); }
.message-empty-state { padding: 35px 18px; border: 1px dashed #cbd8d8; border-radius: 14px; text-align: center; }
.message-empty-state p { margin: 7px auto 0; max-width: 560px; color: var(--muted); font-size: .76rem; }
.message-composer { margin-top: 4px; padding-top: 22px; border-top: 1px solid var(--line); }
.message-composer textarea { min-height: 105px; }
.message-composer-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.message-composer-footer span { color: var(--muted); font-size: .66rem; }
.message-composer-footer .button { flex: 0 0 auto; }
.thread-read-only { margin-top: 18px; padding: 16px; border-radius: 12px; color: var(--muted); background: #f3f5f5; font-size: .76rem; }
.landing-tuition-section { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); align-items: center; gap: 70px; }.landing-tuition-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1rem; }.tuition-points { display: grid; gap: 11px; margin: 25px 0; }.tuition-points span { display: flex; gap: 10px; color: var(--ink-2); font-size: .83rem; }.tuition-points i { color: var(--teal); font-style: normal; font-weight: 900; }
.tuition-preview-card { position: relative; padding: 30px; border: 1px solid #d7e7e2; border-radius: 24px; background: white; box-shadow: var(--shadow); transform: rotate(1deg); }.tuition-preview-card::before { content: ""; position: absolute; z-index: -1; inset: 18px -18px -18px 18px; border-radius: 24px; background: var(--teal-soft); }.tuition-preview-top { display: grid; grid-template-columns: 58px 1fr auto; align-items: center; gap: 14px; }.tuition-preview-top small, .tuition-preview-top strong { display: block; }.tuition-preview-top small { color: var(--muted); font-size: .65rem; }.tuition-preview-card .tag-row { margin: 24px 0; }.tuition-preview-card blockquote { margin: 0 0 25px; color: var(--ink); font-family: Georgia, serif; font-size: 1.2rem; }.tuition-preview-card dl { display: grid; grid-template-columns: 1fr 1fr; margin: 0; padding: 17px 0; border-block: 1px solid var(--line); }.tuition-preview-card dt { color: var(--muted); font-size: .65rem; }.tuition-preview-card dd { margin: 3px 0 0; font-weight: 750; }.tuition-preview-bottom { display: flex; justify-content: space-between; gap: 15px; padding-top: 18px; color: var(--muted); font-size: .67rem; }.tuition-preview-bottom strong { color: var(--teal); }

@media (max-width: 1050px) {
    .tutor-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tuition-hero { padding: 45px; gap: 35px; }
    .tuition-trust-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .verification-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
    .tuition-hero, .tutor-profile-hero, .tutor-profile-layout, .landing-tuition-section { grid-template-columns: minmax(0, 1fr); }
    .tuition-hero { padding: 34px 24px; border-radius: 20px; }
    .tutor-filters { grid-template-columns: 1fr 1fr; }
    .tutor-filters label:first-child { grid-column: 1 / -1; }
    .tutor-filters .button { width: 100%; }
    .tutor-profile-hero { padding: 27px 22px; }
    .booking-summary-card { width: 100%; }
    .profile-safety-panel { position: static; }
    .form-two-column, .booking-detail-grid { grid-template-columns: 1fr; }
    .tuition-dashboard-heading, .booking-actions-card, .booking-detail-hero { align-items: stretch; flex-direction: column; }
    .availability-control { align-items: stretch; flex-direction: column; }.availability-control .button { width: 100%; }
    .tuition-dashboard-heading .button { width: 100%; }
    .booking-list article { grid-template-columns: 55px minmax(0, 1fr); gap: 13px; }
    .booking-list article > .button { grid-column: 1 / -1; width: 100%; }
    .booking-date { width: 53px; height: 53px; }
    .booking-price-box { text-align: left; }
    .booking-actions { width: 100%; }.booking-actions form, .booking-actions .button { width: 100%; }
    .message-thread-header, .message-composer-footer { align-items: stretch; flex-direction: column; }
    .message-composer-footer .button { width: 100%; }
    .message-bubble { max-width: 88%; }
    .tuition-preview-card { transform: none; }
}

@media (max-width: 560px) {
    .tutor-grid, .tutor-filters, .tuition-trust-strip, .verification-grid { grid-template-columns: 1fr; }
    .tutor-filters label:first-child { grid-column: auto; }
    .tutor-card { padding: 21px; }
    .tutor-profile-main { grid-template-columns: 65px 1fr; gap: 15px; }
    .tutor-avatar-large { width: 65px; height: 65px; border-radius: 19px; font-size: 1.1rem; }
    .tutor-profile-main .verified-badge { grid-column: 1 / -1; }
    .profile-section, .profile-safety-panel, .tuition-form fieldset, .booking-detail-card, .booking-actions-card { padding: 21px 18px; }
    .thread-verification-card, .message-thread-shell { padding: 22px 16px; border-radius: 17px; }
    .message-bubble { max-width: 94%; }
    .message-meta { align-items: flex-start; flex-direction: column; gap: 3px; }
    .message-meta time { white-space: normal; }
    .tuition-form input, .tuition-form select, .tuition-form textarea { font-size: 16px; }
    div.tuition-choice-widget, div.tuition-rating-widget { grid-template-columns: 1fr; }
    .status-banner, .no-payment-notice, .emergency-notice { flex-direction: column; }
    .tuition-preview-top { grid-template-columns: 52px 1fr; }.tuition-preview-top .verified-badge { grid-column: 1 / -1; }
    .tuition-preview-bottom { flex-direction: column; }
}

/* Topic-by-topic learning */
.topics-shell { --topic-blue: #315f91; --topic-blue-soft: #edf4fb; --topic-cream: #fff8e9; }
.topic-breadcrumbs { display: flex; align-items: center; gap: 8px; margin-bottom: 25px; color: var(--muted); font-size: .73rem; }
.topic-breadcrumbs a { font-weight: 750; }.topic-breadcrumbs strong { color: var(--ink); }
.topics-index-hero { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); align-items: center; gap: 50px; margin-bottom: 54px; padding: 64px; border-radius: 28px; color: white; background: linear-gradient(135deg, #17314d 0%, #224e63 62%, #287d79 100%); box-shadow: 0 24px 60px rgba(23,49,77,.16); }
.topics-index-hero::before { content: ""; position: absolute; width: 390px; height: 390px; top: -210px; right: -80px; border: 1px solid rgba(255,255,255,.15); border-radius: 50%; }
.topics-index-hero h1 { margin-bottom: 15px; color: white; font-size: clamp(3rem, 6vw, 5rem); }.topics-index-hero > div > p:last-child { max-width: 670px; margin: 0; color: #d7e7e4; font-size: 1.04rem; }
.topics-hero-visual { position: relative; display: grid; place-items: center; min-height: 245px; }.topics-hero-visual > div { position: relative; z-index: 2; display: grid; place-items: center; width: 145px; height: 145px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; color: white; background: rgba(255,255,255,.1); box-shadow: inset 0 0 0 14px rgba(255,255,255,.04); backdrop-filter: blur(8px); }.topics-hero-visual strong, .topics-hero-visual small { display: block; }.topics-hero-visual strong { font-size: 2.2rem; line-height: 1; }.topics-hero-visual small { color: #c6ded9; font-size: .65rem; }
.learning-orbit { position: absolute; display: grid; place-items: center; border-radius: 50%; color: var(--navy); background: var(--gold); font-size: .67rem; font-weight: 850; box-shadow: 0 8px 20px rgba(0,0,0,.15); animation: learning-float 5s ease-in-out infinite; }.orbit-a { width: 46px; height: 46px; left: 8%; top: 20%; }.orbit-b { width: 57px; height: 57px; right: 5%; top: 2%; animation-delay: -1.6s; }.orbit-c { width: 64px; height: 64px; right: 4%; bottom: 4%; animation-delay: -3.1s; }
@keyframes learning-float { 50% { transform: translateY(-10px) rotate(4deg); } }
.topics-intro-row, .topic-section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .75fr); align-items: end; gap: 50px; margin-bottom: 25px; }.topics-intro-row p:last-child, .topic-section-heading > p { margin: 0; color: var(--muted); font-size: .87rem; }
.subject-learning-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }.subject-learning-card { position: relative; overflow: hidden; display: grid; grid-template-columns: 70px 1fr; gap: 22px; min-height: 255px; padding: 33px; border: 1px solid var(--line); border-radius: 21px; color: var(--ink); background: white; box-shadow: 0 10px 30px rgba(23,49,77,.05); }.subject-learning-card:hover { color: var(--ink); }.subject-learning-card.maths-live { border-color: #b7d9d2; transition: transform .2s ease, box-shadow .2s ease; }.subject-learning-card.maths-live:hover { transform: translateY(-4px); box-shadow: var(--shadow); }.subject-learning-mark { display: grid; place-items: center; width: 62px; height: 62px; border-radius: 17px; color: white; background: var(--teal); font-family: Georgia, serif; font-size: 1.7rem; font-weight: 800; }.subject-learning-mark.diamond { color: var(--purple); background: #f0eef9; }.subject-learning-card h2 { margin: 9px 0 9px; }.subject-learning-card p { color: var(--muted); font-size: .84rem; }.subject-learning-card footer { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 15px; margin-top: auto; padding-top: 19px; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; }.subject-learning-card footer strong { color: var(--teal); }.subject-learning-card.coming-soon { opacity: .67; box-shadow: none; }.subject-learning-card.coming-soon .subject-learning-mark { color: var(--ink-2); background: #eef1f2; }
.subject-status { display: inline-flex; padding: 5px 9px; border-radius: 999px; color: var(--muted); background: #f0f2f2; font-size: .6rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }.subject-status.live { color: #276957; background: var(--teal-soft); }
.maths-index-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 50px; margin: 20px 0 45px; }.maths-index-heading h1 { max-width: 680px; }.maths-index-heading > div:first-child > p:last-child { max-width: 650px; color: var(--muted); }.maths-index-stat { display: grid; grid-template-columns: auto auto; align-items: end; padding: 20px 25px; border: 1px solid #cfe0e7; border-radius: 17px; background: var(--topic-blue-soft); }.maths-index-stat strong { font-size: 2.1rem; line-height: 1; }.maths-index-stat span { margin: 0 0 3px 5px; color: var(--muted); font-size: .75rem; }.maths-index-stat small { grid-column: 1 / -1; margin-top: 6px; color: var(--topic-blue); font-size: .65rem; font-weight: 800; }
.maths-topic-list { display: grid; gap: 16px; }.maths-topic-row { display: grid; grid-template-columns: 70px minmax(0, 1fr) 185px; gap: 27px; align-items: center; padding: 34px; border: 1px solid #cddfdc; border-radius: 22px; color: var(--ink); background: white; box-shadow: var(--shadow); transition: transform .2s ease; }.maths-topic-row:hover { color: var(--ink); transform: translateY(-3px); }.maths-topic-number { display: grid; place-items: center; width: 65px; height: 65px; border-radius: 19px; color: white; background: var(--teal); font-size: 1.25rem; font-weight: 850; }.maths-topic-copy h2 { margin: 10px 0 8px; }.maths-topic-copy p { margin-bottom: 13px; color: var(--muted); font-size: .83rem; }.maths-topic-copy ul { display: flex; gap: 20px; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; color: var(--ink-2); font-size: .68rem; }.maths-topic-copy li::before { content: "\2022"; margin-right: 7px; color: var(--gold); }.maths-topic-progress { text-align: right; }.maths-topic-progress strong, .maths-topic-progress small { display: block; }.maths-topic-progress strong { font-size: 2rem; }.maths-topic-progress small { color: var(--muted); font-size: .65rem; }.topic-progress-track { overflow: hidden; height: 6px; margin: 14px 0 18px; border-radius: 9px; background: #e9eeee; }.topic-progress-track span { display: block; height: 100%; border-radius: inherit; background: var(--teal); }.maths-topic-progress b { color: var(--teal); font-size: .72rem; }.prototype-note { margin: 19px 0 0; padding: 15px 18px; border: 1px solid #eadcbd; border-radius: 12px; color: #77591e; background: #fff9eb; font-size: .75rem; }
.dashboard-learning-card { display: grid; grid-template-columns: 90px minmax(0, 1fr) auto; align-items: center; gap: 25px; margin: 50px 0; padding: 30px; border: 1px solid #cfe0e7; border-radius: 20px; background: linear-gradient(105deg, #edf5fb, white); }.dashboard-learning-card h2 { margin-bottom: 7px; }.dashboard-learning-card p:last-child { margin: 0; color: var(--muted); font-size: .8rem; }.dashboard-learning-icon { display: flex; align-items: end; justify-content: center; gap: 3px; width: 78px; height: 78px; padding: 12px; border-radius: 20px; background: var(--navy); transform: rotate(-3deg); }.dashboard-learning-icon span { display: grid; place-items: center; width: 24px; border-radius: 5px 5px 2px 2px; color: var(--navy); background: var(--gold); font-size: .65rem; font-weight: 850; }.dashboard-learning-icon span:nth-child(1){height:34px}.dashboard-learning-icon span:nth-child(2){height:47px}.dashboard-learning-icon span:nth-child(3){height:58px}

.topic-lesson-hero { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(400px, .95fr); align-items: center; gap: 50px; margin-bottom: 22px; padding: 60px; border-radius: 28px; background: linear-gradient(135deg, #eef6f4 0%, #fff9ea 100%); }.topic-lesson-hero::after { content: ""; position: absolute; width: 240px; height: 240px; right: -100px; bottom: -125px; border: 34px solid rgba(40,125,121,.08); border-radius: 50%; }.topic-lesson-label { display: inline-flex; margin-bottom: 17px; padding: 6px 10px; border-radius: 999px; color: var(--teal); background: white; font-size: .64rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }.topic-lesson-copy > p { max-width: 560px; color: var(--muted); font-size: 1rem; }.lesson-facts { display: flex; gap: 8px; flex-wrap: wrap; margin: 23px 0 29px; }.lesson-facts span { padding: 6px 10px; border: 1px solid #d9e5e1; border-radius: 999px; color: var(--ink-2); background: rgba(255,255,255,.7); font-size: .64rem; font-weight: 750; }
.place-value-machine { position: relative; z-index: 1; padding: 26px; border: 1px solid rgba(23,49,77,.12); border-radius: 22px; background: rgba(255,255,255,.8); box-shadow: 0 18px 45px rgba(23,49,77,.09); transform: rotate(1deg); }.machine-labels, .machine-digits { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 5px; }.machine-labels span { padding-bottom: 8px; color: var(--muted); font-size: .57rem; text-align: center; }.machine-digits span { display: grid; place-items: center; aspect-ratio: 1; border: 1px solid #d8e1e3; border-radius: 10px; color: var(--ink); background: #f8faf9; font-family: Georgia, serif; font-size: clamp(1.2rem, 3vw, 2rem); font-weight: 800; }.machine-digits span.active { color: white; border-color: var(--teal); background: var(--teal); transform: translateY(-6px); box-shadow: 0 9px 18px rgba(40,125,121,.2); }.machine-readout { display: flex; align-items: baseline; justify-content: space-between; gap: 15px; margin-top: 19px; padding-top: 17px; border-top: 1px solid var(--line); }.machine-readout small { color: var(--muted); }.machine-readout strong { color: var(--teal); font-size: 1.45rem; }.machine-orbit { position: absolute; z-index: -1; border-radius: 50%; background: var(--gold); opacity: .3; }.machine-orbit.orbit-one { width: 58px; height: 58px; top: -21px; right: -21px; }.machine-orbit.orbit-two { width: 34px; height: 34px; left: -15px; bottom: 22px; }
.generic-topic-hero { background: linear-gradient(135deg, #eef7f4 0%, #fff8e7 72%, #f3effb 100%); }
.topic-concept-orbit { position: relative; z-index: 1; display: grid; place-items: center; width: min(360px, 86%); aspect-ratio: 1; justify-self: center; border: 1px solid rgba(23,49,77,.12); border-radius: 50%; background: radial-gradient(circle at 38% 32%, #fff 0 13%, #e6f4f0 14% 47%, #dcece8 48% 49%, transparent 50%); box-shadow: 0 24px 60px rgba(23,49,77,.12); }
.topic-concept-orbit::before, .topic-concept-orbit::after { content: ""; position: absolute; border: 1px solid rgba(40,125,121,.22); border-radius: 50%; }
.topic-concept-orbit::before { inset: 11%; }.topic-concept-orbit::after { inset: 25%; border-color: rgba(207,156,46,.4); }
.topic-concept-orbit strong { position: relative; z-index: 2; display: grid; place-items: center; width: 112px; height: 112px; border-radius: 28px; color: white; background: var(--navy); box-shadow: 0 18px 34px rgba(23,49,77,.22); font-family: Georgia, serif; font-size: clamp(1.8rem, 4vw, 3rem); transform: rotate(-3deg); }
.topic-concept-orbit span { position: absolute; z-index: 2; bottom: 10%; padding: 7px 12px; border: 1px solid rgba(23,49,77,.1); border-radius: 999px; color: var(--ink-2); background: rgba(255,255,255,.88); font-size: .64rem; font-weight: 850; box-shadow: 0 8px 20px rgba(23,49,77,.08); }
.topic-concept-orbit i { position: absolute; z-index: 3; display: block; border-radius: 50%; background: var(--gold); box-shadow: 0 8px 18px rgba(23,49,77,.14); animation: topic-orbit-float 5s ease-in-out infinite; }.topic-concept-orbit i:nth-child(1) { width: 24px; height: 24px; top: 16%; right: 18%; }.topic-concept-orbit i:nth-child(2) { width: 37px; height: 37px; bottom: 23%; left: 8%; animation-delay: -1.8s; }.topic-concept-orbit i:nth-child(3) { width: 15px; height: 15px; top: 36%; left: 18%; background: var(--teal); animation-delay: -3.2s; }
@keyframes topic-orbit-float { 50% { transform: translateY(-9px) scale(1.06); } }
.topic-section-nav { position: sticky; z-index: 20; top: 88px; display: flex; align-items: center; gap: 8px; margin-bottom: 72px; padding: 9px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.9); box-shadow: 0 12px 35px rgba(23,49,77,.08); backdrop-filter: blur(12px); }.topic-section-nav a { display: flex; align-items: center; gap: 7px; padding: 9px 13px; border-radius: 9px; color: var(--ink-2); font-size: .7rem; font-weight: 800; }.topic-section-nav a:hover { color: var(--teal); background: var(--teal-soft); }.topic-section-nav a span { color: var(--teal); font-size: .58rem; }.topic-section-nav > div { margin-left: auto; padding-right: 9px; color: var(--muted); font-size: .66rem; }.topic-section-nav > div strong { color: var(--teal); }
.topic-learn-section, .walkthrough-section, .difficulty-section { scroll-margin-top: 160px; margin-bottom: 85px; }.lesson-step-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; }.lesson-step-card { position: relative; padding: 31px; border: 1px solid var(--line); border-radius: 19px; background: white; }.lesson-step-card > span { display: inline-grid; place-items: center; width: 35px; height: 35px; margin-bottom: 18px; border-radius: 10px; color: white; background: var(--navy); font-size: .66rem; font-weight: 850; }.lesson-step-card p { color: var(--muted); font-size: .82rem; }.memory-tip { margin-top: 19px; padding: 13px 15px; border-left: 3px solid var(--gold); border-radius: 0 9px 9px 0; color: #70511d; background: var(--topic-cream); font-size: .72rem; }.memory-tip b { display: block; margin-bottom: 3px; color: #5a411b; }
.topic-quick-check { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(420px, 1.28fr); gap: 42px; align-items: center; margin-top: 22px; padding: 39px; border: 1px solid #c9dfda; border-radius: 22px; background: linear-gradient(135deg, #f3faf7, #fff); }.topic-quick-check > div:first-child > p:last-child { color: var(--muted); font-size: .79rem; }.quick-check-work { min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: 0 12px 30px rgba(23,49,77,.06); }.quick-check-hint, .quick-check-answer, .quick-check-work li { display: none; }.quick-check-hint.is-visible, .quick-check-answer.is-visible { display: block; animation: learning-reveal .25s ease both; }.quick-check-hint { margin-bottom: 12px; padding: 13px 15px; border-left: 3px solid var(--gold); border-radius: 0 10px 10px 0; background: var(--gold-soft); }.quick-check-hint small, .quick-check-answer small { display: block; color: var(--teal); font-size: .59rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }.quick-check-hint p { margin: 3px 0 0; color: #6f541f; font-size: .73rem; }.quick-check-work ol { display: grid; gap: 8px; margin: 0 0 15px; padding: 0; list-style: none; }.quick-check-work li.is-visible { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; padding: 11px; border-radius: 10px; background: #f4f7f6; animation: learning-reveal .25s ease both; }.quick-check-work li span { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 8px; color: white; background: var(--teal); font-size: .59rem; font-weight: 850; }.quick-check-work li p { margin: 3px 0 0; color: var(--ink-2); font-size: .72rem; }.quick-check-answer { margin-bottom: 14px; padding: 14px 16px; border: 1px solid #b9dbd1; border-radius: 11px; background: var(--teal-soft); }.quick-check-answer strong { display: block; margin-top: 3px; font-size: 1.25rem; }.quick-check-work .button { width: 100%; }

/* Accessible, code-rendered Maths diagrams. These stay sharp at every screen size. */
.topic-hero-visual { display: grid; place-items: center; min-width: 0; }.topic-hero-visual .maths-visual { width: min(390px, 100%); margin: 0; }.topic-hero-visual .maths-visual-stage { min-height: 240px; }.curriculum-heading { margin-top: 45px; }.lesson-extension-grid { display: grid; gap: 18px; margin: 18px 0 28px; }.lesson-extension-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .82fr); gap: 28px; align-items: center; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(135deg, #fff, #f7fbfa); }.lesson-extension-card > div > span { display: inline-grid; place-items: center; width: 32px; height: 32px; margin-bottom: 13px; border-radius: 9px; color: white; background: var(--teal); font-size: .65rem; font-weight: 850; }.lesson-extension-card > div > p { color: var(--muted); font-size: .79rem; }.maths-visual { min-width: 0; margin: 0; }.maths-visual-stage { display: grid; place-items: center; min-height: 210px; overflow: hidden; padding: 22px; border: 1px solid #cbdcdd; border-radius: 18px; background: repeating-linear-gradient(0deg, transparent 0 31px, rgba(32,91,104,.035) 32px), linear-gradient(145deg, #fbfdfc, #edf7f4); }.maths-visual figcaption { padding: 8px 5px 0; color: var(--muted); font-size: .65rem; text-align: center; }.question-visual { padding: 6px 42px 12px; }.question-visual .maths-visual { max-width: 620px; }.question-visual .maths-visual-stage { min-height: 245px; }
.fraction-visual-row { display: grid; grid-template-columns: 42px minmax(170px, 1fr); gap: 10px; align-items: center; width: min(330px, 100%); margin: 8px 0; }.fraction-visual-row > b { color: var(--navy); font-size: .72rem; }.fraction-visual-row > div { display: grid; grid-template-columns: repeat(var(--parts), 1fr); height: 55px; overflow: hidden; border: 2px solid var(--navy); border-radius: 8px; }.fraction-visual-row i { border-right: 1px solid var(--navy); background: white; }.fraction-visual-row i:last-child { border: 0; }.fraction-visual-row i.filled { background: var(--teal); }.fraction-visual-row i.gold { background: var(--gold); }
.percent-visual-grid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 2px; width: min(230px, 70vw); aspect-ratio: 1; padding: 3px; border: 2px solid var(--navy); background: white; }.percent-visual-grid i { border-radius: 1px; background: #e9efef; }.percent-visual-grid i.filled { background: var(--teal); }.maths-visual-percent-grid .maths-visual-stage > strong { margin-top: 11px; color: var(--navy); }
.ratio-visual-dots { display: flex; align-items: center; gap: 19px; }.ratio-visual-dots > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; max-width: 125px; }.ratio-visual-dots i { width: 25px; height: 25px; border-radius: 50%; background: var(--teal); box-shadow: inset 0 -4px rgba(0,0,0,.1); }.ratio-visual-dots > div:last-child i { background: var(--gold); }.ratio-visual-dots > b { font-size: 1.8rem; }
.bar-visual-chart { position: relative; width: min(350px, 100%); padding-left: 28px; }.bar-axis-y { position: absolute; left: -7px; top: 40%; transform: rotate(-90deg); color: var(--muted); font-size: .55rem; }.bar-plot { display: flex; align-items: end; gap: 12px; height: 165px; padding: 10px 12px 0; border-left: 2px solid var(--navy); border-bottom: 2px solid var(--navy); background: repeating-linear-gradient(to top, transparent 0 31px, #dce7e7 32px); }.bar-plot > div { display: grid; grid-template-rows: 130px 20px; align-items: end; flex: 1; text-align: center; }.bar-plot i { position: relative; display: block; min-height: 5px; border-radius: 5px 5px 0 0; background: var(--teal); }.bar-plot > div:nth-child(even) i { background: var(--gold); }.bar-plot i b { position: absolute; top: -18px; left: 50%; transform: translateX(-50%); font-size: .6rem; }.bar-plot span { padding-top: 5px; font-size: .6rem; font-weight: 800; }
.line-visual-chart { width: min(390px, 100%); }.line-visual-chart svg { display: block; width: 100%; overflow: visible; }.line-visual-chart line { stroke: var(--navy); stroke-width: 1.2; }.line-visual-chart polyline { fill: none; stroke: var(--teal); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }.line-visual-chart circle { fill: var(--gold); stroke: var(--navy); stroke-width: 1; }.line-visual-chart text { fill: var(--ink-2); font-size: 5px; text-anchor: middle; }.pictogram-visual { display: grid; gap: 8px; width: min(350px, 100%); }.pictogram-visual > div { display: grid; grid-template-columns: 35px 1fr; align-items: center; padding-bottom: 5px; border-bottom: 1px solid #dce7e5; }.pictogram-visual b { color: var(--navy); }.pictogram-visual span { display: flex; gap: 7px; }.pictogram-visual i { color: var(--teal); font-style: normal; font-size: 1.2rem; }.pictogram-visual > strong { color: var(--muted); font-size: .58rem; }.pie-visual { display: flex; align-items: center; gap: 28px; }.pie-visual > i { display: block; width: 150px; aspect-ratio: 1; border: 3px solid white; border-radius: 50%; box-shadow: 0 0 0 2px var(--navy), 0 12px 24px rgba(23,49,77,.12); }.pie-visual ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }.pie-visual li { display: flex; align-items: center; gap: 7px; color: var(--ink-2); font-size: .62rem; }.pie-visual li b { width: 12px; height: 12px; border-radius: 3px; }
.visual-table { width: min(440px, 100%); overflow: hidden; border: 1px solid #aebfc4; border-collapse: separate; border-spacing: 0; border-radius: 10px; background: white; text-align: center; }.visual-table th, .visual-table td { padding: 11px; border-right: 1px solid #d5dfdf; border-bottom: 1px solid #d5dfdf; font-size: .7rem; }.visual-table th { color: white; background: var(--navy); }.visual-table tr:last-child td { border-bottom: 0; }.visual-table th:last-child, .visual-table td:last-child { border-right: 0; }
.coordinate-visual-grid { position: relative; width: min(320px, 76vw); aspect-ratio: 1; border: 2px solid #8da7ae; background-color: white; background-image: linear-gradient(to right, #d7e4e4 1px, transparent 1px), linear-gradient(to bottom, #d7e4e4 1px, transparent 1px); background-size: calc(100% / var(--grid-intervals)) calc(100% / var(--grid-intervals)); }.coord-x, .coord-y { position: absolute; z-index: 1; background: var(--navy); }.coord-x { left: 0; top: calc(50% - 1px); width: 100%; height: 3px; }.coord-y { left: calc(50% - 1px); top: 0; width: 3px; height: 100%; }.coord-x::after { position: absolute; content: ''; right: -1px; top: -4px; border-width: 5px 0 5px 8px; border-style: solid; border-color: transparent transparent transparent var(--navy); }.coord-y::after { position: absolute; content: ''; left: -4px; top: -1px; border-width: 0 5px 8px; border-style: solid; border-color: transparent transparent var(--navy); }.coordinate-visual-grid b { position: absolute; width: 14px; height: 14px; transform: translate(-50%, -50%); border: 3px solid white; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 2px var(--navy); }.coordinate-visual-grid b span { position: absolute; left: 13px; top: -18px; font-size: .66rem; font-weight: 850; }
.spinner-visual { position: relative; width: min(200px, 55vw); aspect-ratio: 1; border: 4px solid var(--navy); border-radius: 50%; box-shadow: 0 9px 24px rgba(23,49,77,.15); }.spinner-visual i { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; transform: translate(-50%, -50%); border: 3px solid white; border-radius: 50%; background: var(--navy); }.spinner-legend { display: flex; gap: 8px; margin-top: 11px; }.spinner-legend span { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 7px; color: white; font-size: .6rem; font-weight: 850; }.legend-R { background: #d96659; }.legend-B { background: #447eb8; }.legend-G { background: #2b8a72; }
.thermometer-visual { display: flex; gap: 16px; align-items: stretch; height: 185px; }.thermometer-visual > div { display: flex; align-items: end; width: 28px; padding: 4px; border: 3px solid var(--navy); border-radius: 16px 16px 21px 21px; background: white; }.thermometer-visual > div i { width: 100%; border-radius: 10px; background: #d96659; }.thermometer-visual ol { display: flex; flex-direction: column; justify-content: space-between; margin: 0; padding: 0; list-style: none; font-size: .65rem; font-weight: 800; }
.composite-visual { position: relative; width: min(280px, 67vw); aspect-ratio: 1.3; }.composite-shape { width: 100%; height: 100%; background: var(--teal); clip-path: polygon(0 0, 100% 0, 100% 55%, 62% 55%, 62% 100%, 0 100%); opacity: .88; }.dimension { position: absolute; padding: 3px 6px; border-radius: 5px; color: var(--navy); background: white; font-size: .6rem; font-weight: 800; }.dimension.width { left: 42%; top: -18px; }.dimension.height { left: -23px; top: 44%; transform: rotate(-90deg); }.dimension.cut-width { right: 1%; bottom: 35%; }.dimension.cut-height { right: 20%; bottom: 3%; transform: rotate(-90deg); }
.circle-visual { position: relative; width: min(200px, 55vw); aspect-ratio: 1; border: 4px solid var(--navy); border-radius: 50%; background: rgba(40,125,121,.08); }.circle-visual i { position: absolute; left: 50%; top: 50%; width: 50%; height: 3px; transform-origin: left; transform: rotate(-28deg); background: var(--gold); }.circle-visual i::before { position: absolute; content: ''; width: 9px; height: 9px; transform: translate(-50%, -38%); border-radius: 50%; background: var(--navy); }.circle-visual span { position: absolute; left: 68%; top: 32%; color: #7a5416; font-size: .62rem; font-weight: 850; }.circle-visual b { position: absolute; left: 50%; top: 53%; transform: translateX(-50%); font-size: .52rem; }
.angle-visual { position: relative; width: min(320px, 72vw); height: 170px; border-bottom: 3px solid var(--navy); }.angle-visual i { position: absolute; left: 50%; bottom: -2px; width: 45%; height: 3px; transform-origin: left; background: var(--navy); }.angle-visual i:first-child { transform: rotate(0); }.angle-visual i:nth-child(2) { transform: rotate(-52deg); background: var(--teal); }.angle-visual i:nth-child(3) { width: 70px; height: 70px; transform: translate(-70px, 0); border: 2px solid var(--gold); border-bottom: 0; border-left: 0; border-radius: 0 100% 0 0; background: none; }.angle-visual span, .angle-visual b { position: absolute; bottom: 22px; font-size: .72rem; }.angle-visual span { left: 30%; }.angle-visual b { right: 28%; }
.cube-net-visual { position: relative; display: grid; grid-template-columns: repeat(4, 48px); grid-template-rows: repeat(3, 48px); width: 192px; height: 144px; }.cube-net-visual i { display: grid; place-items: center; border: 2px solid var(--navy); background: var(--teal-soft); font-style: normal; font-size: .65rem; font-weight: 850; }.cube-net-visual .cell-1 { grid-area: 2/1; }.cube-net-visual .cell-2 { grid-area: 2/2; }.cube-net-visual .cell-3 { grid-area: 2/3; background: var(--gold-soft); }.cube-net-visual .cell-4 { grid-area: 2/4; }.cube-net-visual .cell-5 { grid-area: 1/2; }.cube-net-visual .cell-6 { grid-area: 3/2; }
.number-line-visual { display: flex; align-items: start; width: min(470px, 100%); padding: 30px 4px 0; border-top: 3px solid var(--navy); }.number-line-visual span { position: relative; flex: 1; text-align: center; }.number-line-visual i { position: absolute; top: -34px; left: 50%; width: 2px; height: 13px; background: var(--navy); }.number-line-visual b { font-size: .55rem; }.number-line-visual span.active b { display: inline-grid; place-items: center; width: 27px; height: 27px; margin-top: -7px; border-radius: 50%; color: white; background: var(--gold); }
.column-visual { display: grid; justify-items: end; width: 170px; color: var(--navy); font: 800 1.25rem/1.4 ui-monospace, monospace; }.column-visual span:nth-child(2), .column-visual small:last-of-type { width: 100%; padding-bottom: 3px; border-bottom: 2px solid var(--navy); text-align: right; }.column-visual small { font-size: .9rem; }.column-visual strong { color: var(--teal); }
.array-visual { display: grid; grid-template-columns: repeat(var(--columns), 24px); gap: 8px; }.array-visual i { width: 24px; height: 24px; border-radius: 6px; background: var(--teal); box-shadow: inset 0 -4px rgba(0,0,0,.1); }.factor-visual { display: grid; gap: 7px; min-width: 180px; text-align: center; }.factor-visual > strong { color: var(--teal); font-size: 2rem; }.factor-visual span { display: grid; grid-template-columns: 1fr 20px 1fr; align-items: center; }.factor-visual i { padding: 5px; border-radius: 7px; background: var(--gold-soft); font-style: normal; font-size: .7rem; }.factor-visual b { font-size: .7rem; }
.place-visual-chart { display: flex; align-items: end; max-width: 100%; overflow-x: auto; }.place-visual-chart div { display: grid; justify-items: center; min-width: 55px; }.place-visual-chart small { min-height: 30px; color: var(--muted); font-size: .45rem; text-align: center; }.place-visual-chart b { display: grid; place-items: center; width: 48px; height: 52px; border: 1px solid var(--navy); color: var(--navy); background: white; font-size: 1.3rem; }.function-visual { display: flex; align-items: center; gap: 12px; }.function-visual strong { display: grid; place-items: center; min-width: 55px; height: 55px; padding: 5px; border-radius: 50%; color: white; background: var(--navy); }.function-visual span { padding: 14px 20px; clip-path: polygon(0 0, 82% 0, 100% 50%, 82% 100%, 0 100%); color: #60450f; background: var(--gold); font-size: .67rem; font-weight: 850; }.equivalence-visual { display: flex; align-items: center; gap: 12px; }.equivalence-visual strong { padding: 14px; border: 2px solid var(--teal); border-radius: 10px; background: white; }.scale-visual > div { display: flex; }.scale-visual i { width: 50px; border-top: 5px solid var(--teal); border-right: 2px solid white; }.scale-visual strong { display: block; margin-top: 15px; text-align: center; }.money-visual { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; max-width: 290px; }.money-visual i { display: grid; place-items: center; width: 55px; height: 55px; border: 3px solid #b68424; border-radius: 50%; color: #70511d; background: var(--gold-soft); font-style: normal; font-size: .65rem; font-weight: 850; }.money-visual strong { flex-basis: 100%; text-align: center; }.measure-visual { display: flex; align-items: end; width: min(380px, 100%); border-bottom: 4px solid var(--navy); }.measure-visual i { position: relative; flex: 1; height: 18px; border-left: 2px solid var(--navy); }.measure-visual i.active { height: 35px; border-color: var(--gold); }.measure-visual b { position: absolute; left: -5px; top: 20px; font-size: .45rem; }.measure-visual strong { margin-left: 8px; }.route-visual { display: flex; align-items: center; width: min(470px, 100%); }.route-visual > strong { display: grid; place-items: center; min-width: 42px; height: 42px; border-radius: 50%; color: white; background: var(--navy); }.route-visual > span { position: relative; flex: 1; border-top: 4px solid var(--teal); text-align: center; }.route-visual span b { position: absolute; left: 50%; top: -27px; transform: translateX(-50%); white-space: nowrap; font-size: .55rem; }
.roman-visual { display: grid; justify-items: center; gap: 9px; }.roman-visual strong { padding: 18px 25px; border: 2px solid var(--gold); border-radius: 13px; color: var(--navy); background: white; font-family: Georgia, serif; font-size: clamp(2rem, 6vw, 3.2rem); letter-spacing: .08em; }.roman-visual span { color: var(--muted); font-size: .6rem; font-weight: 800; text-transform: uppercase; }
.rectangle-visual { position: relative; width: min(280px, 78%); height: 155px; }.rectangle-visual > i { position: absolute; inset: 8px 20px 25px 8px; border: 4px solid var(--navy); background: repeating-linear-gradient(45deg, rgba(40,125,121,.12) 0 9px, rgba(40,125,121,.03) 9px 18px); }.rectangle-visual .width { left: 45%; bottom: 0; }.rectangle-visual .height { right: -13px; top: 42%; }.rectangle-visual > b { position: absolute; left: 50%; top: 45%; transform: translate(-50%, -50%); color: var(--teal); }.triangle-visual { position: relative; width: min(300px, 90%); }.triangle-visual svg { display: block; width: 100%; }.triangle-visual polygon { fill: rgba(40,125,121,.14); stroke: var(--navy); stroke-width: 4; stroke-linejoin: round; }.triangle-visual line, .triangle-visual path { fill: none; stroke: var(--gold); stroke-width: 3; stroke-dasharray: 5 4; }.triangle-visual path { stroke-dasharray: none; }.triangle-visual text { fill: var(--navy); font-size: 12px; font-weight: 800; }.triangle-base { display: block; text-align: center; font-size: .65rem; font-weight: 800; }.triangle-height { position: absolute; right: 20%; top: 47%; color: #76551b; font-size: .62rem; font-weight: 800; }.cuboid-visual { position: relative; width: 270px; height: 180px; }.cuboid-front, .cuboid-back { position: absolute; width: 150px; height: 95px; border: 3px solid var(--navy); background: rgba(40,125,121,.1); }.cuboid-front { left: 35px; top: 52px; }.cuboid-back { left: 78px; top: 22px; background: rgba(212,164,70,.1); }.cuboid-visual .edge { position: absolute; display: block; width: 52px; border-top: 3px solid var(--navy); transform: rotate(-35deg); transform-origin: left center; }.cuboid-visual .edge-a { left: 36px; top: 52px; }.cuboid-visual .edge-b { left: 185px; top: 52px; }.cuboid-visual .edge-c { left: 36px; top: 147px; }.cuboid-visual .edge-d { left: 185px; top: 147px; }.cuboid-visual span { position: absolute; font-size: .6rem; font-weight: 800; }.cuboid-length { left: 85px; bottom: 9px; }.cuboid-width { right: 18px; top: 80px; }.cuboid-height { left: 6px; top: 90px; transform: rotate(-90deg); }.polygon-visual { display: grid; justify-items: center; gap: 7px; width: min(230px, 75%); }.polygon-visual svg { width: 100%; }.polygon-visual polygon { fill: rgba(212,164,70,.18); stroke: var(--navy); stroke-width: 3; stroke-linejoin: round; }.polygon-visual strong { color: var(--teal); font-size: .67rem; }.lesson-step-visual, .walkthrough-visual { margin: 18px 0; }.lesson-step-visual .maths-visual-stage { min-height: 190px; padding: 16px; }.walkthrough-visual .maths-visual-stage { min-height: 210px; padding: 16px; }.lesson-step-card.has-visual { display: flex; flex-direction: column; }.lesson-step-card.has-visual .memory-tip { margin-top: auto; }
.place-value-lab { display: grid; grid-template-columns: minmax(280px, .75fr) minmax(500px, 1.25fr); align-items: center; gap: 45px; margin-top: 20px; padding: 40px; border: 1px solid #cde0da; border-radius: 22px; background: #f2f9f7; }.place-value-lab-copy > p:not(.eyebrow) { color: var(--muted); font-size: .8rem; }.lab-answer { min-height: 83px; margin-top: 21px; padding: 16px 18px; border-radius: 12px; color: white; background: var(--navy); }.lab-answer small, .lab-answer strong { display: block; }.lab-answer small { color: #bfd9d4; font-size: .67rem; }.lab-answer strong { margin-top: 5px; font-size: 1.15rem; }.interactive-place-chart { min-width: 0; overflow: hidden; border: 1px solid #cfdadd; border-radius: 15px; background: white; }.chart-row { display: grid; grid-template-columns: repeat(6, minmax(64px, 1fr)); }.chart-head span { display: grid; place-items: center; min-height: 55px; padding: 7px 3px; border-right: 1px solid var(--line); color: var(--muted); font-size: .55rem; line-height: 1.25; text-align: center; }.chart-head span:last-child, .chart-digits button:last-child { border-right: 0; }.chart-digits button { min-width: 0; min-height: 78px; border: 0; border-top: 1px solid var(--line); border-right: 1px solid var(--line); color: var(--ink); background: white; cursor: pointer; font-family: Georgia, serif; font-size: 1.9rem; font-weight: 800; transition: background .16s ease, color .16s ease, transform .16s ease; }.chart-digits button:hover, .chart-digits button.selected { color: white; background: var(--teal); }.chart-digits button.selected { transform: translateY(-2px); }
.rounding-rule-card { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: 50px; margin-top: 20px; padding: 42px; border-radius: 22px; color: white; background: var(--navy); }.rounding-rule-card h2 { color: white; }.rounding-rule-card > div > p:last-child { color: #c7d5df; }.rounding-rule-card ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; margin: 0; padding: 0; list-style: none; }.rounding-rule-card li { padding: 18px 14px; border: 1px solid rgba(255,255,255,.12); border-radius: 12px; background: rgba(255,255,255,.06); }.rounding-rule-card li strong, .rounding-rule-card li span { display: block; }.rounding-rule-card li strong { margin-bottom: 7px; color: var(--gold); font-size: .78rem; }.rounding-rule-card li span { color: #cfdae2; font-size: .62rem; }
.walkthrough-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }.walkthrough-card { display: flex; flex-direction: column; min-height: 490px; padding: 32px; border: 1px solid var(--line); border-radius: 20px; background: white; }.walkthrough-label { align-self: flex-start; margin-bottom: 15px; padding: 5px 9px; border-radius: 999px; color: #70511d; background: var(--gold-soft); font-size: .59rem; font-weight: 850; text-transform: uppercase; }.walkthrough-card > h3 { min-height: 55px; }.walkthrough-card ol { display: grid; gap: 9px; margin: 11px 0 20px; padding: 0; list-style: none; }.walkthrough-card li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; padding: 11px; border-radius: 10px; background: #f5f8f7; }.walkthrough-card li > span { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 8px; color: white; background: var(--teal); font-size: .59rem; font-weight: 850; }.walkthrough-card li p { margin: 3px 0 0; color: var(--ink-2); font-size: .72rem; }.walkthrough-answer { margin-top: auto; padding: 15px 17px; border: 1px solid #bdddd4; border-radius: 11px; background: var(--teal-soft); }.walkthrough-answer small, .walkthrough-answer strong { display: block; }.walkthrough-answer small { color: var(--teal); font-size: .6rem; font-weight: 850; text-transform: uppercase; }.walkthrough-answer strong { margin-top: 3px; font-size: 1.25rem; }.walkthrough-button { margin-top: 13px; }.walkthrough-ready li, .walkthrough-ready .walkthrough-answer { display: none; }.walkthrough-ready li.is-visible { display: grid; animation: learning-reveal .25s ease both; }.walkthrough-ready .walkthrough-answer.is-visible { display: block; animation: learning-reveal .25s ease both; }.walkthrough-button:disabled { cursor: default; opacity: .65; transform: none; }
@keyframes learning-reveal { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.difficulty-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }.difficulty-card { display: flex; flex-direction: column; min-height: 355px; padding: 27px 23px; border: 1px solid var(--line); border-top: 4px solid #7a9bbb; border-radius: 17px; background: white; }.difficulty-card.difficulty-medium { border-top-color: var(--teal); }.difficulty-card.difficulty-hard { border-top-color: var(--gold); }.difficulty-card.difficulty-challenging { border-top-color: var(--coral); }.difficulty-card header { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 22px; }.difficulty-card header span { color: var(--muted); font-size: .63rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }.difficulty-card header strong { color: var(--teal); font-size: .7rem; }.difficulty-card h3 { min-height: 48px; }.difficulty-card p { color: var(--muted); font-size: .75rem; }.difficulty-progress { overflow: hidden; height: 6px; margin: auto 0 20px; border-radius: 8px; background: #eaeeee; }.difficulty-progress span { display: block; height: 100%; border-radius: inherit; background: var(--teal); }

.topic-practice-shell { width: min(1100px, calc(100% - 40px)); }.practice-page-header { display: flex; align-items: end; justify-content: space-between; gap: 25px; }.practice-page-header h1 { margin: 10px 0 4px; font-size: clamp(2rem, 4vw, 3.15rem); }.practice-page-header > div:first-child > p { margin: 0; color: var(--muted); }.practice-band { display: inline-flex; padding: 5px 9px; border-radius: 999px; color: #3f6080; background: #edf4fb; font-size: .61rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }.practice-band.difficulty-medium { color: #276957; background: var(--teal-soft); }.practice-band.difficulty-hard { color: #78551c; background: var(--gold-soft); }.practice-band.difficulty-challenging { color: #8d473e; background: #fff0ed; }.practice-count { display: grid; grid-template-columns: auto auto; align-items: end; min-width: 90px; text-align: right; }.practice-count strong { font-size: 2rem; line-height: 1; }.practice-count span { margin: 0 0 2px 4px; color: var(--muted); }.practice-count small { grid-column: 1 / -1; margin-top: 4px; color: var(--muted); font-size: .57rem; text-transform: uppercase; }.practice-page-progress { overflow: hidden; height: 7px; margin: 22px 0 35px; border-radius: 10px; background: #e5eaea; }.practice-page-progress span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--teal), var(--gold)); transition: width .3s ease; }
.practice-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; align-items: start; gap: 22px; }.typed-question-card { overflow: hidden; min-height: 545px; border: 1px solid var(--line); border-radius: 23px; background: white; box-shadow: var(--shadow); }.typed-question-card.answer-correct { border-color: #a9d5c8; }.typed-question-card.answer-incorrect { border-color: #e1b1aa; }.typed-question-top { display: flex; align-items: center; gap: 10px; padding: 20px 30px; border-bottom: 1px solid var(--line); }.typed-question-top > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: white; background: var(--navy); font-size: .72rem; font-weight: 850; }.typed-question-top small { color: var(--teal); font-size: .67rem; font-weight: 800; }.typed-question-card > h2 { max-width: 760px; margin: 0; padding: 42px 42px 18px; font-size: clamp(1.45rem, 3vw, 2.25rem); line-height: 1.25; }.typed-answer-form { padding: 18px 42px 42px; }.typed-answer-form > label { display: block; margin-bottom: 8px; color: var(--ink-2); font-size: .7rem; font-weight: 800; }.typed-answer-input { display: flex; align-items: stretch; width: min(430px, 100%); }.typed-answer-input input { min-width: 0; width: 100%; min-height: 60px; padding: 14px 17px; border: 2px solid #bfcfd4; border-radius: 12px; color: var(--ink); background: #fbfcfb; font-size: 1.2rem; font-weight: 750; }.typed-answer-input:has(span) input { border-radius: 12px 0 0 12px; }.typed-answer-input > span { display: grid; place-items: center; padding: 0 16px; border: 2px solid #bfcfd4; border-left: 0; border-radius: 0 12px 12px 0; color: var(--muted); background: #f0f3f3; font-weight: 750; }.typed-answer-input input:focus { outline: 3px solid rgba(40,125,121,.14); border-color: var(--teal); }.question-hint { width: min(600px, 100%); margin: 20px 0; }.question-hint summary { color: var(--teal); cursor: pointer; font-size: .72rem; font-weight: 800; }.question-hint p { margin: 9px 0 0; padding: 13px 15px; border-radius: 10px; color: #71541e; background: var(--gold-soft); font-size: .73rem; }
.practice-side-panel { display: grid; gap: 14px; }.back-to-lesson { display: grid; grid-template-columns: 26px 1fr; gap: 8px; padding: 19px; border: 1px solid var(--line); border-radius: 15px; color: var(--ink); background: white; }.back-to-lesson:hover { color: var(--ink); }.back-to-lesson > span { color: var(--teal); }.back-to-lesson strong, .back-to-lesson small { display: block; }.back-to-lesson strong { font-size: .73rem; }.back-to-lesson small { margin-top: 2px; color: var(--muted); font-size: .61rem; }.band-progress-list { padding: 20px; border: 1px solid var(--line); border-radius: 15px; background: white; }.band-progress-list > a { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 10px; border-radius: 9px; color: var(--ink-2); font-size: .68rem; }.band-progress-list > a[aria-current="page"] { background: var(--teal-soft); }.band-progress-list a > strong { color: var(--teal); }.band-progress-list i { grid-column: 1 / -1; overflow: hidden; height: 4px; border-radius: 5px; background: #e8eded; }.band-progress-list i b { display: block; height: 100%; border-radius: inherit; background: var(--teal); }.practice-reminder { display: grid; grid-template-columns: 31px 1fr; gap: 10px; padding: 17px; border-radius: 14px; color: #70511d; background: var(--gold-soft); }.practice-reminder > span { font-size: 1.2rem; }.practice-reminder p { margin: 0; font-size: .67rem; }
.answer-feedback { padding: 20px 42px 42px; }.feedback-heading { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; }.feedback-heading > span { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%; color: white; background: var(--teal); font-size: 1.4rem; font-weight: 850; }.answer-incorrect .feedback-heading > span { background: var(--coral); }.feedback-heading h3 { margin: 0; }.feedback-heading .eyebrow { margin-bottom: 3px; }.answer-compare { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }.answer-compare > div { padding: 14px 16px; border-radius: 11px; background: #f2f5f4; }.answer-compare small, .answer-compare strong { display: block; }.answer-compare small { color: var(--muted); font-size: .61rem; }.answer-compare strong { margin-top: 4px; overflow-wrap: anywhere; }.worked-solution { margin-top: 20px; padding: 20px; border: 1px solid #d6e3df; border-radius: 14px; background: #f6faf8; }.worked-solution ol { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }.worked-solution li { display: grid; grid-template-columns: 27px 1fr; gap: 10px; align-items: start; }.worked-solution li > span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; color: white; background: var(--teal); font-size: .58rem; font-weight: 850; }.worked-solution li p { margin: 2px 0 0; color: var(--ink-2); font-size: .72rem; }.feedback-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

@media (max-width: 1050px) {
    .main-nav { gap: 13px; }.main-nav a { font-size: .82rem; }
    .difficulty-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .topic-lesson-hero { grid-template-columns: minmax(0, 1fr) minmax(340px, .9fr); padding: 45px; }
    .place-value-lab { grid-template-columns: 1fr; }.interactive-place-chart { width: 100%; }
    .rounding-rule-card { grid-template-columns: 1fr; gap: 24px; }
    .topic-quick-check { grid-template-columns: 1fr; gap: 20px; }
    .lesson-extension-card { grid-template-columns: 1fr; }.topic-hero-visual { order: -1; }.topic-hero-visual .maths-visual-stage { min-height: 210px; }
}
@media (max-width: 780px) {
    .topics-index-hero, .topic-lesson-hero { grid-template-columns: 1fr; padding: 38px 27px; }
    .topics-hero-visual { min-height: 210px; }
    .topics-intro-row, .topic-section-heading { grid-template-columns: 1fr; gap: 7px; }
    .subject-learning-grid, .lesson-step-grid, .walkthrough-grid { grid-template-columns: minmax(0, 1fr); }
    .lesson-step-card, .walkthrough-card, .lesson-step-visual, .walkthrough-visual, .maths-visual-stage { min-width: 0; max-width: 100%; }
    .maths-index-heading { grid-template-columns: 1fr; }.maths-index-stat { justify-self: start; }
    .maths-topic-row { grid-template-columns: 58px minmax(0, 1fr); padding: 25px; }.maths-topic-number { width: 54px; height: 54px; }.maths-topic-progress { grid-column: 1 / -1; text-align: left; }
    .dashboard-learning-card { grid-template-columns: 72px 1fr; }.dashboard-learning-card .button { grid-column: 1 / -1; width: 100%; }
    .place-value-machine { transform: none; }
    .topic-concept-orbit { width: min(330px, 82%); }
    .topic-section-nav { top: 76px; overflow-x: auto; padding: 7px; }.topic-section-nav a { flex: 0 0 auto; }.topic-section-nav > div { display: none; }
    .place-value-lab, .rounding-rule-card { padding: 28px 22px; }
    .rounding-rule-card ol { grid-template-columns: repeat(2, 1fr); }
    .difficulty-grid { grid-template-columns: 1fr; }.difficulty-card { min-height: 300px; }
    .practice-layout { grid-template-columns: 1fr; }.practice-side-panel { grid-row: 2; }.band-progress-list { display: none; }
    .typed-question-card > h2 { padding: 32px 24px 16px; }.typed-answer-form, .answer-feedback { padding: 17px 24px 30px; }.typed-question-top { padding: 17px 22px; }
    .question-visual { padding: 4px 20px 12px; }.question-visual .maths-visual-stage { min-height: 205px; padding: 14px; }.lesson-extension-card { padding: 22px 18px; }.lesson-extension-card .maths-visual-stage { padding: 14px; }
}
@media (max-width: 560px) {
    .topics-index-hero { padding: 32px 22px; border-radius: 20px; }.topics-index-hero h1 { font-size: 2.8rem; }
    .subject-learning-card { grid-template-columns: 52px 1fr; gap: 15px; min-height: 230px; padding: 23px 19px; }.subject-learning-mark { width: 48px; height: 48px; border-radius: 14px; font-size: 1.25rem; }.subject-learning-card footer { align-items: flex-start; flex-direction: column; }
    .maths-topic-row { grid-template-columns: 1fr; }.maths-topic-number { width: 48px; height: 48px; }.maths-topic-progress { grid-column: auto; }
    .dashboard-learning-card { grid-template-columns: 1fr; padding: 23px 20px; }.dashboard-learning-icon { width: 66px; height: 66px; }
    .topic-lesson-hero { padding: 31px 22px; border-radius: 20px; }.lesson-facts { gap: 6px; }.place-value-machine { padding: 15px; }.machine-labels span { font-size: .48rem; }.machine-digits span { border-radius: 7px; }.machine-readout { align-items: flex-start; flex-direction: column; }.machine-readout strong { font-size: 1.2rem; }.topic-concept-orbit { width: min(280px, 90%); }.topic-concept-orbit strong { width: 88px; height: 88px; border-radius: 23px; }.topic-quick-check { padding: 24px 19px; }.quick-check-work { padding: 18px 15px; }
    .topic-section-nav a { padding: 8px 9px; }.topic-section-nav a span { display: none; }
    .lesson-step-card { padding: 24px 20px; }.place-value-lab { overflow: hidden; }.interactive-place-chart { overflow-x: auto; }.chart-row { min-width: 450px; }
    .rounding-rule-card ol { grid-template-columns: 1fr; }.walkthrough-card { min-height: 0; padding: 24px 20px; }.walkthrough-card > h3 { min-height: 0; }
    .practice-page-header { align-items: flex-start; }.practice-count { min-width: 70px; }.typed-question-card { min-height: 500px; border-radius: 18px; }.typed-answer-input input { min-height: 56px; font-size: 16px; }.typed-answer-form .button { width: 100%; }
    .answer-compare { grid-template-columns: 1fr; }.feedback-actions { align-items: stretch; flex-direction: column; }.feedback-actions .button { width: 100%; }
    .function-visual { gap: 6px; }.function-visual span { padding: 12px 15px; }.visual-table th, .visual-table td { padding: 8px 5px; }.route-visual > strong { min-width: 34px; height: 34px; }.ratio-visual-dots i { width: 21px; height: 21px; }
    .pie-visual { align-items: flex-start; flex-direction: column; gap: 16px; }.pie-visual > i { width: 130px; }.pictogram-visual i { font-size: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
    .topic-concept-orbit i { animation: none; }
}
.polygon-visual text { fill: var(--navy); font-size: 7px; font-weight: 850; text-anchor: middle; }

/* Correct, value-driven maths diagrams. */
.fraction-operation { margin: 6px 0; color: var(--navy); font-size: 1.35rem; font-weight: 900; }
.fraction-result { display: grid; grid-template-columns: 42px minmax(170px,1fr); gap: 10px; align-items: center; width: min(330px,100%); }
.fraction-result > div { display: grid; gap: 5px; }.fraction-result > div > span { display: grid; grid-template-columns: repeat(var(--parts),1fr); height: 42px; overflow: hidden; border: 2px solid var(--navy); border-radius: 7px; }.fraction-result > div > span > i { border-right: 1px solid var(--navy); background: white; }.fraction-result > div > span > i.result { background: #507dab; }
.place-visual-chart div.active b { color: white; border-color: var(--gold); background: var(--gold); box-shadow: 0 0 0 4px rgba(212,164,70,.2); }
.number-line-visual { position: relative; display: block; height: 72px; margin-top: 8px; padding: 0; border: 0; }.number-line-visual::before { position: absolute; content: ''; left: 0; right: 0; top: 24px; height: 3px; background: var(--navy); }.number-line-visual span { position: absolute; top: 24px; width: 0; }.number-line-visual i { top: -7px; left: -1px; height: 15px; }.number-line-visual b { position: absolute; top: 14px; left: 0; transform: translateX(-50%); white-space: nowrap; }.number-line-visual span.active::after { position: absolute; content: ''; left: -7px; top: -7px; width: 14px; height: 14px; border: 3px solid white; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 2px var(--navy); }.number-line-visual span.active b { width: auto; height: auto; margin: 0; padding: 4px 6px; color: white; border-radius: 6px; background: var(--gold); }.number-line-visual span.target::after { position: absolute; content: ''; left: -6px; top: -6px; width: 12px; height: 12px; border-radius: 50%; background: var(--teal); }
.coordinate-visual-grid svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }.coordinate-visual-grid polyline { fill: none; stroke: var(--gold); stroke-width: 1.3; stroke-dasharray: 3 2; }.coordinate-visual-grid > b { z-index: 4; }.coordinate-visual-grid > b span { width: max-content; padding: 3px 5px; border: 1px solid #d6e2e2; border-radius: 5px; background: white; }.coord-label-x,.coord-label-y,.coord-origin { position: absolute; z-index: 3; padding: 1px 2px; color: #38566a; background: rgba(255,255,255,.88); font-size: .5rem; font-weight: 800; line-height: 1; }.coord-label-x { top: calc(50% + 6px); transform: translateX(-50%); }.coord-label-y { left: calc(50% + 6px); transform: translateY(-50%); }.coord-origin { left: calc(50% + 5px); top: calc(50% + 6px); }.coord-axis-name { position: absolute; z-index: 4; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; color: white; background: var(--navy); font: italic 850 .7rem Georgia,serif; }.coord-axis-name-x { right: -10px; top: calc(50% - 28px); }.coord-axis-name-y { left: calc(50% + 8px); top: -10px; }
.spinner-visual > b { position: absolute; left: 50%; bottom: -31px; width: max-content; transform: translateX(-50%); color: var(--muted); font-size: .58rem; }.spinner-legend { margin-top: 37px; }
.composite-visual svg { display: block; width: 100%; height: 100%; }.composite-visual polygon { fill: rgba(40,125,121,.72); stroke: var(--navy); stroke-width: 3; stroke-linejoin: round; }.frame-visual { position: relative; display: grid; place-items: center; width: min(300px,78vw); aspect-ratio: 1.5; }.frame-visual > div { position: absolute; inset: 10px 18px 25px 10px; border: 16px solid rgba(212,164,70,.58); outline: 3px solid var(--navy); background: rgba(40,125,121,.16); }.frame-visual > div i { position: absolute; inset: -2px; border: 2px dashed var(--teal); }.frame-visual > b { z-index: 2; padding: 5px 8px; border-radius: 7px; background: white; font-size: .68rem; }
.triangle-visual text { text-anchor: middle; }.cuboid-visual svg { display: block; width: 100%; height: 100%; }.cuboid-visual svg polygon,.cuboid-visual svg rect { fill: rgba(40,125,121,.11); stroke: var(--navy); stroke-width: 3; stroke-linejoin: round; }.cuboid-visual svg line { stroke: var(--navy); stroke-width: 3; }.cuboid-visual svg .hidden-edge { stroke-dasharray: 5 4; opacity: .55; }.cuboid-visual > b { position: absolute; left: 50%; top: 58%; transform: translate(-50%,-50%); color: var(--teal); font-size: .78rem; }
.angle-visual { height: auto; border: 0; }.angle-visual svg { display: block; width: 100%; }.angle-visual line { stroke: var(--navy); stroke-width: 3; }.angle-visual .angle-ray { stroke: var(--teal); }.angle-visual path { fill: none; stroke: var(--gold); stroke-width: 2.5; }.angle-visual circle { fill: var(--navy); }.angle-visual text { fill: var(--navy); font-size: 13px; font-weight: 850; text-anchor: middle; }.polygon-visual line { stroke: var(--gold); stroke-width: 1.5; stroke-dasharray: 3 2; }
.angle-set-visual { display:grid; justify-items:center; gap:8px; width:min(360px,92%); }.angle-set-visual svg { display:block; width:100%; }.angle-set-visual line { stroke:var(--navy); stroke-width:3; stroke-linecap:round; }.angle-set-visual line:nth-of-type(even) { stroke:var(--teal); }.angle-set-visual circle { fill:var(--navy); }.angle-set-visual text { fill:var(--navy); font-size:13px; font-weight:900; text-anchor:middle; paint-order:stroke; stroke:white; stroke-width:4px; }.angle-set-visual strong { color:var(--teal); font-size:.68rem; text-align:center; }.shape-properties-visual { display:grid; grid-template-columns:minmax(120px,180px) minmax(130px,1fr); align-items:center; gap:18px; width:min(470px,96%); }.shape-properties-visual svg { display:block; width:100%; }.shape-properties-visual polygon { fill:rgba(40,125,121,.15); stroke:var(--navy); stroke-width:4; stroke-linejoin:round; }.shape-properties-visual > div { display:flex; flex-wrap:wrap; gap:8px; }.shape-properties-visual span { padding:7px 10px; border:1px solid rgba(40,125,121,.28); border-radius:999px; background:white; color:var(--navy); font-size:.62rem; font-weight:850; }
.bar-model-visual { display: grid; gap: 12px; width: min(470px,100%); }.bar-model-visual > div { display: grid; grid-template-columns: repeat(var(--segments),minmax(0,1fr)); overflow: hidden; border: 3px solid var(--navy); border-radius: 10px; }.bar-model-visual i { display: grid; place-items: center; min-width: 13px; height: 62px; border-right: 1px solid var(--navy); background: white; font-style: normal; }.bar-model-visual i.highlighted { background: rgba(40,125,121,.75); }.bar-model-visual i.second-group { background: rgba(212,164,70,.66); }.bar-model-visual i small { transform: rotate(-55deg); color: var(--navy); font-size: .42rem; white-space: nowrap; }.bar-model-visual > p { display: flex; justify-content: space-around; margin: 0; }.bar-model-visual > strong { color: var(--teal); text-align: center; }
.division-visual { display: grid; gap: 13px; width: min(480px,100%); }.division-visual header,.division-visual footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; align-items: center; }.division-visual header strong { font-size: 1.6rem; }.division-visual > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }.division-visual > div i { display: grid; place-items: center; width: 34px; height: 34px; border: 2px solid var(--teal); border-radius: 50%; background: white; font-style: normal; font-size: .55rem; font-weight: 850; }.division-visual > div b { align-self: center; font-size: .65rem; }.division-visual footer strong { color: #a85b42; }.division-visual footer em { flex-basis: 100%; color: var(--teal); font-size: .67rem; font-style: normal; font-weight: 850; text-align: center; }
.factor-list-visual { display: grid; gap: 9px; width: min(500px,100%); }.factor-list-visual > div { display: grid; grid-template-columns: 50px 1fr; gap: 9px; padding: 10px; border-radius: 9px; background: white; }.factor-list-visual > div strong { color: var(--teal); }.factor-list-visual > div span { font-size: .68rem; line-height: 1.6; }.factor-list-visual p { margin: 0; color: var(--muted); text-align: center; }.factor-list-visual p b { color: var(--gold); font-size: 1.2rem; }
.sequence-visual { display: flex; align-items: center; max-width: 100%; overflow-x: auto; padding: 20px 4px; }.sequence-visual > div { position: relative; display: flex; align-items: center; }.sequence-visual strong { display: grid; place-items: center; width: 54px; height: 54px; border: 2px solid var(--navy); border-radius: 50%; background: white; }.sequence-visual span { width: 45px; color: var(--teal); font-size: .58rem; font-weight: 850; text-align: center; }
.timeline-visual { display: flex; align-items: center; width: min(520px,100%); overflow-x: auto; padding: 24px 4px; }.timeline-visual > strong,.timeline-visual span b { display: grid; place-items: center; min-width: 56px; height: 42px; border-radius: 8px; background: var(--navy); color: white; }.timeline-visual span { position: relative; display: flex; align-items: center; }.timeline-visual span i { width: 80px; border-top: 4px solid var(--teal); }.timeline-visual span small { position: absolute; left: 13px; top: -23px; color: var(--teal); font-size: .55rem; font-weight: 850; }.rate-triangle-visual { width: min(330px,80vw); }.rate-triangle-visual svg { width: 100%; }.rate-triangle-visual polygon { fill: rgba(212,164,70,.15); stroke: var(--navy); stroke-width: 3; }.rate-triangle-visual line { stroke: var(--navy); stroke-width: 2; }.rate-triangle-visual text { fill: var(--navy); font-size: 11px; font-weight: 850; text-anchor: middle; }
.dataset-visual { display: grid; justify-items: center; gap: 18px; }.dataset-visual > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }.dataset-visual i { display: grid; place-items: center; min-width: 52px; height: 52px; padding: 4px; border: 2px solid var(--navy); border-radius: 11px; background: white; font-style: normal; font-weight: 850; }.dataset-visual i.highlighted { color: white; border-color: var(--gold); background: var(--gold); }.dataset-visual > strong { color: var(--teal); }
.counter-group-visual { display: grid; gap: 12px; width: min(400px,100%); }.counter-group-visual > div { display: grid; grid-template-columns: 60px 1fr; gap: 12px; align-items: center; padding: 9px 12px; border: 2px solid transparent; border-radius: 10px; background: white; }.counter-group-visual > div.highlighted { border-color: var(--gold); background: var(--gold-soft); }.counter-group-visual span { display: flex; flex-wrap: wrap; gap: 7px; }.counter-group-visual i { width: 22px; height: 22px; border-radius: 50%; background: var(--teal); box-shadow: inset 0 -3px rgba(0,0,0,.12); }
.probability-line-visual { position: relative; width: min(460px,90%); height: 100px; }.probability-line-visual > i { position: absolute; left: 0; right: 0; top: 44px; height: 7px; border-radius: 8px; background: linear-gradient(90deg,#d96659,var(--gold),var(--teal)); }.probability-line-visual span { position: absolute; top: 35px; transform: translateX(-50%); }.probability-line-visual span b { display: block; width: 20px; height: 20px; border: 3px solid white; border-radius: 50%; background: var(--navy); box-shadow: 0 0 0 2px var(--navy); }.probability-line-visual span small { position: absolute; top: 28px; left: 50%; width: 95px; transform: translateX(-50%); font-size: .55rem; font-weight: 800; text-align: center; }.probability-line-visual > em { position: absolute; top: 16px; font-style: normal; font-weight: 850; }.probability-line-visual > em:first-of-type { left: 0; }.probability-line-visual > em:last-of-type { right: 0; }

@media (max-width:560px) { .bar-model-visual i small { display:none; }.coordinate-visual-grid > b span { font-size:.5rem; }.timeline-visual span i { width:55px; }.factor-list-visual > div { grid-template-columns:38px 1fr; } }
.bar-model-visual i.group-end { border-right-width: 4px; }

/* Child-friendly lesson interaction and active practice tools. */
.math-fraction { display:inline-grid; grid-template-rows:auto auto; min-width:1.45em; margin:0 .08em; vertical-align:-.48em; color:inherit; font-variant-numeric:tabular-nums; line-height:1; text-align:center; }.math-fraction-top,.math-fraction-bottom { display:block; min-width:100%; padding:.04em .16em; font-size:.76em; line-height:1.05; }.math-fraction-bottom { border-top:.1em solid currentColor; }.math-mixed-number { display:inline-flex; align-items:center; gap:.08em; white-space:nowrap; }.math-mixed-number .math-fraction { margin:0; vertical-align:middle; }.math-whole-number { line-height:1; }.lesson-step-card > p,.lesson-extension-card > div > p { font-size:.9rem; line-height:1.7; }.memory-tip { font-size:.84rem; line-height:1.65; }.walkthrough-card li p,.quick-check-work li p,.worked-solution li p,.question-hint p { font-size:.82rem; line-height:1.6; }.walkthrough-answer strong,.quick-check-answer strong,.answer-compare strong { line-height:1.45; }
.lesson-check-progress { display: grid; grid-template-columns: minmax(200px,.65fr) minmax(180px,1.35fr); gap: 22px; align-items: center; margin: -2px 0 22px; padding: 16px 19px; border: 1px solid #c9dfda; border-radius: 15px; background: #f3faf7; }.lesson-check-progress div { display: grid; gap: 3px; }.lesson-check-progress strong { color: var(--navy); font-size: .78rem; }.lesson-check-progress span { color: var(--muted); font-size: .64rem; }.lesson-check-progress > i { display: block; overflow: hidden; height: 9px; border-radius: 999px; background: #dce8e5; }.lesson-check-progress > i b { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg,var(--teal),#58ad99); transition: width .3s ease; }
.lesson-understood-button { display: flex; gap: 9px; align-items: center; justify-content: center; width: 100%; margin-top: 17px; padding: 11px 14px; border: 1px solid #b9d1cd; border-radius: 10px; color: var(--teal); background: #f7fbfa; cursor: pointer; font: inherit; font-size: .68rem; font-weight: 850; transition: transform .18s ease, background .18s ease, color .18s ease; }.lesson-understood-button:hover { transform: translateY(-1px); }.lesson-understood-button i { display: grid; place-items: center; width: 23px; height: 23px; border: 2px solid currentColor; border-radius: 50%; font-style: normal; }.lesson-step-card.is-understood { border-color: #95cbbd; box-shadow: 0 12px 30px rgba(40,125,121,.1); }.lesson-step-card.is-understood .lesson-understood-button { color: white; border-color: var(--teal); background: var(--teal); }
.visual-explore-button { display: flex; gap: 7px; align-items: center; justify-content: center; width: calc(100% - 10px); margin: 8px 5px 0; padding: 8px 10px; border: 0; border-radius: 9px; color: var(--teal); background: transparent; cursor: pointer; font: inherit; font-size: .6rem; }.visual-explore-button:hover { background: var(--teal-soft); }.visual-explore-button span { font-size: 1rem; }
.quick-check-attempt { display: grid; gap: 7px; margin-bottom: 16px; }.quick-check-attempt > label { color: var(--ink-2); font-size: .68rem; font-weight: 850; }.quick-check-attempt > div { display: flex; }.quick-check-attempt input { min-width: 0; flex: 1; min-height: 48px; padding: 10px 13px; border: 2px solid #bfcfd4; border-radius: 10px 0 0 10px; font: inherit; font-size: .85rem; }.quick-check-attempt input:focus { outline: 3px solid rgba(40,125,121,.12); border-color: var(--teal); }.quick-check-attempt button { min-width: 88px; border: 0; border-radius: 0 10px 10px 0; color: white; background: var(--navy); cursor: pointer; font: inherit; font-size: .68rem; font-weight: 850; }.quick-check-attempt > p { min-height: 18px; margin: 0; font-size: .65rem; font-weight: 750; }.quick-check-attempt > p.is-correct { color: #24715d; }.quick-check-attempt > p.is-incorrect,.quick-check-attempt > p.needs-answer { color: #a34e3d; }
.practice-thinking-tools { margin: 4px 42px 2px; padding: 17px; border: 1px solid #d7e2e1; border-radius: 14px; background: #f7faf9; }.practice-thinking-tools > p { margin-bottom: 10px; }.practice-thinking-tools > div { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }.practice-thinking-tools button { display: flex; gap: 7px; align-items: center; min-height: 49px; padding: 8px 10px; border: 1px solid #c9d7d9; border-radius: 9px; color: var(--ink-2); background: white; cursor: pointer; font: inherit; font-size: .61rem; font-weight: 750; text-align: left; }.practice-thinking-tools button i { display: grid; flex: 0 0 24px; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: white; background: var(--navy); font-style: normal; }.practice-thinking-tools button.is-checked { color: #236a58; border-color: #8bc5b5; background: var(--teal-soft); }.practice-thinking-tools button.is-checked i { background: var(--teal); }.practice-scratchpad { width: min(600px,100%); margin: 18px 0 0; }.practice-scratchpad summary { color: var(--teal); cursor: pointer; font-size: .72rem; font-weight: 800; }.practice-scratchpad label { display: block; margin: 10px 0 6px; color: var(--muted); font-size: .62rem; }.practice-scratchpad textarea { display: block; resize: vertical; width: 100%; padding: 12px; border: 1px solid #bfcfd4; border-radius: 10px; background: repeating-linear-gradient(white 0 27px,#dce8e6 28px); font: inherit; font-size: .75rem; line-height: 28px; }
@media (max-width:700px) { .lesson-check-progress { grid-template-columns:1fr; gap:11px; }.practice-thinking-tools { margin:4px 24px 2px; }.practice-thinking-tools > div { grid-template-columns:1fr; }.practice-thinking-tools button { min-height:44px; }.visual-explore-button { min-height:40px; }.quick-check-attempt > div { flex-direction:column; gap:7px; }.quick-check-attempt input,.quick-check-attempt button { width:100%; min-height:46px; border-radius:10px; } }
@media (prefers-reduced-motion:reduce) { .lesson-check-progress > i b,.lesson-understood-button { transition:none; animation:none; } }

/* Audited value-anchored measurement and solid diagrams. */
.thermometer-visual { display:flex; gap:12px; align-items:stretch; height:190px; padding:8px 0 14px; }
.thermometer-visual > .thermometer-tube { position:relative; display:flex; align-items:end; width:30px; padding:4px; border:3px solid var(--navy); border-radius:16px 16px 10px 10px; background:white; }
.thermometer-visual > .thermometer-tube > i { width:100%; border-radius:9px 9px 4px 4px; background:#d96659; }
.thermometer-tube > b { position:absolute; left:50%; bottom:-14px; width:38px; height:38px; transform:translateX(-50%); border:3px solid var(--navy); border-radius:50%; background:#d96659; }
.thermometer-visual > .thermometer-scale { position:relative; display:block; width:74px; padding:0; border:0; border-left:2px solid #b8c9cd; border-radius:0; background:transparent; }
.thermometer-scale > span { position:absolute; left:0; display:flex; align-items:center; transform:translateY(50%); }
.thermometer-scale > span > i { display:block; width:11px; min-width:11px; height:0; border:0; border-top:2px solid #6d8590; border-radius:0; background:transparent; }
.thermometer-scale > span > b { margin-left:6px; color:var(--ink-2); font-size:.58rem; white-space:nowrap; }
.thermometer-scale > span.active > i { width:18px; min-width:18px; border-color:#d96659; border-width:3px; }
.thermometer-scale > span.active > b { padding:3px 6px; border-radius:6px; color:white; background:#d96659; font-size:.68rem; }
.scale-visual { width:min(430px,100%); }
.scale-visual > div { position:relative; display:flex; align-items:start; padding:18px 8px 28px 0; }
.scale-visual > div > span { position:absolute; left:-2px; top:36px; font-size:.52rem; font-weight:800; }
.scale-visual i { position:relative; display:block; flex:1; min-width:28px; max-width:58px; height:20px; border-top:5px solid var(--teal); border-right:2px solid var(--navy); }
.scale-visual i:first-of-type { border-left:2px solid var(--navy); }
.scale-visual i b { position:absolute; right:-4px; top:18px; font-size:.52rem; }
.scale-visual em { position:absolute; right:0; top:-5px; color:var(--teal); font-size:.62rem; font-style:normal; font-weight:850; }
.scale-visual strong { display:block; padding:8px 11px; border-radius:8px; color:var(--navy); background:white; font-size:.66rem; text-align:center; }
.triangle-visual .dimension-text,.polygon-visual text { paint-order:stroke; stroke:white; stroke-width:3px; stroke-linejoin:round; }
.triangle-visual .dimension-text { fill:#76551b; font-size:9px; font-weight:850; }
.cuboid-visual { width:min(360px,96%); height:auto; }
.cuboid-visual svg { display:block; width:100%; height:auto; overflow:visible; }
.cuboid-dimension { fill:var(--navy); font-size:10px; font-weight:850; text-anchor:middle; }
.cuboid-dimension-width { fill:#76551b; font-size:9px; }
.cuboid-scale-note { fill:var(--muted); font-size:8px; font-weight:700; text-anchor:middle; }
.cuboid-volume { fill:var(--teal); font-size:10px; font-weight:850; text-anchor:middle; }

/* Geometry is drawn from the supplied measurements rather than a fixed icon. */
.rectangle-visual { width:min(340px,95%); height:auto; }.rectangle-visual svg { display:block; width:100%; overflow:visible; }.rectangle-visual rect { fill:rgba(40,125,121,.15); stroke:var(--navy); stroke-width:4; }.rectangle-visual text { fill:var(--navy); font-size:11px; font-weight:850; text-anchor:middle; }.rectangle-visual text.area-label { fill:var(--teal); font-size:12px; }
.frame-visual { width:min(360px,95%); aspect-ratio:auto; }.frame-visual svg { display:block; width:100%; }.frame-visual .frame-outer { fill:rgba(212,164,70,.62); stroke:var(--navy); stroke-width:3; }.frame-visual .frame-inner { fill:rgba(40,125,121,.18); stroke:var(--teal); stroke-width:2; stroke-dasharray:5 3; }.frame-visual > b { max-width:170px; text-align:center; line-height:1.5; }
.division-visual .division-question { display:grid; grid-template-columns:1fr 1fr; gap:10px; }.division-visual .division-question :is(b,strong) { padding:13px; border:2px dashed #a9c7c3; border-radius:10px; color:var(--teal); background:white; font-size:.68rem; text-align:center; }

/* Coordinate operations stay legible instead of being squeezed into the grid. */
.coordinate-visual-wrap { display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:center; gap:1rem; width:min(100%,36rem); }
.coordinate-visual-grid > .reflection-axis { z-index:2; background:#c4523f; box-shadow:0 0 0 3px rgba(196,82,63,.14); }
.coordinate-operation-cue { display:grid; min-width:9rem; gap:.25rem; padding:.8rem 1rem; border:2px solid var(--teal); border-radius:1rem; color:var(--navy); background:#eef9f7; font-size:1rem; line-height:1.4; text-align:center; white-space:pre; }
.coordinate-operation-cue span { color:var(--teal); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; }
.coordinate-operation-cue.rotation { max-width:10rem; white-space:normal; }
.polygon-visual .triangulation-line { stroke:var(--gold); stroke-width:1.7; stroke-dasharray:0; }
.polygon-property-badges { display:flex; flex-wrap:wrap; justify-content:center; gap:.35rem; margin-top:.5rem; }
.polygon-property-badges span { padding:.28rem .48rem; border:1px solid #b9d1cd; border-radius:999px; color:var(--teal); background:#f3faf7; font-size:.52rem; font-weight:800; }
@media (max-width:620px) { .coordinate-visual-wrap { grid-template-columns:1fr; }.coordinate-operation-cue { justify-self:stretch; } }

/* A conversion diagram must model both units, not use an unrelated ruler. */
.conversion-model-visual { display:grid; gap:.55rem; width:min(32rem,100%); }
.conversion-model-row { display:grid; grid-template-columns:5.5rem minmax(0,1fr); gap:.7rem; align-items:center; }
.conversion-model-row > strong { color:var(--navy); font-size:.72rem; text-align:right; }
.conversion-model-row > span { display:grid; grid-template-columns:repeat(auto-fit,minmax(3.5rem,1fr)); overflow:hidden; border:2px solid var(--navy); border-radius:.7rem; }
.conversion-model-row i { display:grid; place-items:center; min-height:2.8rem; padding:.3rem; border-right:1px solid var(--navy); color:var(--navy); background:white; font-size:.58rem; font-style:normal; font-weight:850; }
.conversion-model-row i:last-child { border-right:0; }
.conversion-model-row.target i { border-color:#8d641e; background:var(--gold-soft); }
.conversion-model-arrow { padding-left:6.2rem; color:var(--teal); font-size:.58rem; font-weight:850; letter-spacing:.04em; text-align:center; text-transform:uppercase; }
@media (max-width:560px) { .conversion-model-row { grid-template-columns:1fr; gap:.3rem; }.conversion-model-row > strong { text-align:left; }.conversion-model-arrow { padding-left:0; } }

/* Stable, child-readable maths notation and diagram guidance. */
.maths-visual figcaption { padding:10px 8px 0; font-size:.76rem; line-height:1.65; }
.math-fraction { display:inline-grid; grid-template-rows:auto auto; min-width:1.55em; margin:0 .12em; vertical-align:middle; color:inherit; font-variant-numeric:tabular-nums; font-weight:750; line-height:1; text-align:center; white-space:nowrap; }
.math-fraction-top,.math-fraction-bottom { display:block; min-width:100%; padding:.05em .22em; font-size:.92em; line-height:1.08; }
.math-fraction-bottom { border-top:.11em solid currentColor; }
.math-mixed-number { display:inline-flex; align-items:center; gap:.13em; margin:0 .08em; vertical-align:middle; white-space:nowrap; }
.math-mixed-number .math-fraction { margin:0; vertical-align:0; }
.math-whole-number { align-self:center; font-size:1.05em; line-height:1; }
.lesson-step-card > p,.lesson-extension-card > div > p { font-size:.9rem; line-height:1.8; }
.memory-tip { font-size:.86rem; line-height:1.75; }
.walkthrough-card li p,.quick-check-work li p,.worked-solution li p,.question-hint p { font-size:.84rem; line-height:1.7; }
.walkthrough-answer strong,.quick-check-answer strong,.answer-compare strong { line-height:1.55; }
.fraction-visual-row { grid-template-columns:minmax(62px,auto) minmax(170px,1fr); gap:13px; width:min(390px,100%); margin:9px 0; }
.fraction-visual-row > b { display:flex; align-items:center; justify-content:center; min-height:58px; overflow:visible; color:var(--navy); font-size:1.05rem; line-height:1.25; }
.fraction-visual-row > div { height:58px; }
.fraction-result { grid-template-columns:minmax(62px,auto) minmax(170px,1fr); gap:13px; width:min(390px,100%); }
.fraction-result > b { display:flex; align-items:center; justify-content:center; min-height:58px; overflow:visible; padding:5px; border:2px solid var(--navy); border-radius:9px; color:var(--navy); background:white; font-size:1.05rem; line-height:1.25; }
.fraction-source > b { border-color:transparent; background:transparent; }
.fraction-result > div { gap:6px; }
.fraction-result > div > span { height:46px; }
.fraction-result > div > span > i:last-child { border-right:0; }

.visual-explore-button { gap:8px; min-height:42px; padding:9px 12px; border-radius:10px; font-size:.68rem; }
.maths-visual.is-guiding .maths-visual-stage { border-color:var(--gold); box-shadow:inset 0 0 0 3px rgba(212,164,70,.14); }
.maths-visual-stage .is-visual-focus { outline:3px solid var(--gold); outline-offset:4px; filter:saturate(1.22) drop-shadow(0 0 5px rgba(212,164,70,.42)); box-shadow:0 0 0 5px rgba(212,164,70,.16); transition:outline-color .18s ease,box-shadow .18s ease,filter .18s ease; }
.maths-visual-stage svg .is-visual-focus { outline:0; filter:drop-shadow(0 0 3px rgba(212,164,70,.75)); box-shadow:none; }
.visual-focus-guide { display:grid; grid-template-columns:auto minmax(0,1fr); gap:11px; align-items:start; margin:12px 5px 2px; padding:13px 15px; border:1px solid #e4ca91; border-radius:12px; color:#5d461a; background:#fff8e9; }
.visual-focus-guide[hidden] { display:none; }
.visual-focus-guide > span { padding:5px 8px; border-radius:999px; color:white; background:var(--teal); font-size:.58rem; font-weight:850; white-space:nowrap; }
.visual-focus-guide strong { display:block; margin-bottom:3px; color:var(--navy); font-size:.72rem; }
.visual-focus-guide p { margin:0; color:#5d5546; font-size:.7rem; line-height:1.55; }
@media (max-width:520px) {
    .fraction-visual-row,.fraction-result { grid-template-columns:52px minmax(0,1fr); gap:8px; }
    .fraction-visual-row > b,.fraction-result > b { min-height:50px; font-size:.92rem; }
    .visual-focus-guide { grid-template-columns:1fr; }
    .visual-focus-guide > span { justify-self:start; }
}
@media (prefers-reduced-motion:reduce) { .maths-visual-stage .is-visual-focus { transition:none; animation:none; } }

/* Concrete teaching comes before technical vocabulary in every lesson card. */
.lesson-simple-copy { margin:13px 0 2px; padding:15px 16px; border:1px solid #b9d9d1; border-radius:13px; background:#f0faf6; }
.lesson-simple-copy small,.lesson-mini-task > small { display:inline-flex; margin-bottom:6px; color:var(--teal); font-size:.62rem; font-weight:900; letter-spacing:.1em; text-transform:uppercase; }
.lesson-simple-copy p { margin:0; color:var(--navy); font-size:.92rem; font-weight:700; line-height:1.65; }
.lesson-mini-task { margin:16px 0 2px; padding:16px; border:2px solid #ead19a; border-radius:14px; background:#fff9ec; }
.lesson-mini-task > p { margin:0 0 12px; color:#493b20; font-size:.85rem; font-weight:700; line-height:1.65; }
.lesson-mini-task > button { width:100%; min-height:43px; padding:9px 12px; border:1px solid #d5ae5e; border-radius:9px; color:#64490f; background:white; cursor:pointer; font:inherit; font-size:.68rem; font-weight:850; }
.lesson-mini-task > button:hover,.lesson-mini-task > button[aria-expanded="true"] { color:white; border-color:var(--gold); background:#9a6c15; }
.lesson-mini-answer { margin-top:12px; padding:13px 14px; border-radius:10px; color:#1f5f50; background:white; box-shadow:inset 4px 0 #4c9c89; }
.lesson-mini-answer[hidden] { display:none; }
.lesson-mini-answer strong { display:block; margin-bottom:4px; color:var(--navy); font-size:.92rem; line-height:1.45; }
.lesson-mini-answer p { margin:0; color:#48625d; font-size:.75rem; line-height:1.65; }
.lesson-deeper-copy { margin:13px 0 0; border-top:1px solid #e0e7e7; border-bottom:1px solid #e0e7e7; }
.lesson-deeper-copy summary { padding:11px 2px; color:var(--teal); cursor:pointer; font-size:.7rem; font-weight:850; }
.lesson-deeper-copy p { margin:0; padding:0 2px 13px; color:var(--muted); font-size:.79rem; line-height:1.75; }
.lesson-extension-card .lesson-simple-copy { margin-top:12px; }
.lesson-extension-card .lesson-mini-task { margin-top:13px; }
.lesson-extension-card > div > .memory-tip { margin-top:14px; }
@media (max-width:700px) {
    .lesson-simple-copy,.lesson-mini-task { padding:14px; }
    .lesson-simple-copy p { font-size:.86rem; }
    .lesson-mini-task > p { font-size:.88rem; }
}

/* Keep the full teaching flow readable and contained on phones and tablets. */
@media (max-width:780px) {
    .topic-lesson-shell { width:min(100% - 20px,1160px); }
    .topic-lesson-hero { gap:24px; margin-bottom:14px; }
    .topic-lesson-copy h1 { font-size:clamp(2rem,10vw,3.1rem); overflow-wrap:anywhere; }
    .topic-section-nav { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:3px; width:100%; margin-bottom:42px; overflow:visible; }
    .topic-section-nav a { justify-content:center; min-width:0; padding:9px 5px; white-space:nowrap; }
    .topic-section-heading h2 { font-size:clamp(1.7rem,8vw,2.35rem); }
    .lesson-step-grid { gap:13px; }
    .lesson-step-card,.lesson-extension-card { min-width:0; max-width:100%; }
    .lesson-step-visual,.walkthrough-visual,.lesson-extension-card > .maths-visual { width:100%; min-width:0; max-width:100%; }
    .maths-visual,.maths-visual-stage { width:100%; min-width:0; max-width:100%; }
    .maths-visual-stage { min-height:190px; padding:14px 10px; }
    .maths-visual figcaption { padding-inline:4px; overflow-wrap:anywhere; }
    .equivalence-visual,.function-visual { flex-wrap:wrap; justify-content:center; max-width:100%; }
    .coordinate-visual-wrap { grid-template-columns:minmax(0,1fr); justify-items:center; width:100%; }
    .coordinate-operation-cue { max-width:100%; text-align:center; }
    .visual-table { width:100%; table-layout:fixed; }
    .visual-table th,.visual-table td { padding:8px 5px; overflow-wrap:anywhere; }
}
@media (max-width:560px) {
    .topic-lesson-shell { width:min(100% - 16px,1160px); padding-top:20px; }
    .topic-breadcrumbs { gap:5px; font-size:.62rem; overflow-wrap:anywhere; }
    .topic-lesson-hero { padding:25px 17px; border-radius:17px; }
    .topic-hero-visual .maths-visual-stage { min-height:175px; }
    .topic-section-nav { top:72px; border-radius:12px; }
    .topic-section-nav a { font-size:.63rem; }
    .lesson-check-progress { padding:14px; }
    .lesson-step-card { padding:21px 14px; border-radius:15px; }
    .lesson-extension-card { padding:19px 13px; border-radius:15px; }
    .lesson-simple-copy,.lesson-mini-task { padding:13px 12px; }
    .lesson-simple-copy p,.lesson-mini-task > p { font-size:.86rem; line-height:1.65; }
    .lesson-mini-task > button { min-height:46px; padding:10px; font-size:.72rem; }
    .lesson-deeper-copy summary { min-height:44px; padding:13px 2px; }
    .maths-visual-stage { min-height:165px; padding:12px 7px; border-radius:14px; }
    .maths-visual figcaption { font-size:.7rem; line-height:1.8; }
    .fraction-visual-row,.fraction-result { grid-template-columns:42px minmax(0,1fr); gap:7px; }
    .fraction-visual-row > b,.fraction-result > b { min-height:46px; padding:3px; font-size:.86rem; }
    .fraction-visual-row > div { height:48px; }
    .fraction-result > div > span { height:40px; }
    .math-fraction { min-width:1.4em; margin-inline:.08em; font-size:.92em; }
    .math-mixed-number { margin-inline:.05em; }
    .equivalence-visual { gap:7px; }
    .equivalence-visual strong { padding:10px; }
    .function-visual { gap:7px; }
    .function-visual strong { min-width:48px; height:48px; }
    .function-visual span { padding:11px 15px; }
    .shape-properties-visual { grid-template-columns:1fr; justify-items:center; gap:10px; }
    .shape-properties-visual svg { width:min(180px,72vw); }
    .shape-properties-visual > div { justify-content:center; }
    .visual-table th,.visual-table td { padding:7px 3px; font-size:.58rem; }
    .coordinate-visual-grid { width:min(270px,82vw); }
    .bar-model-visual i { min-width:8px; height:52px; }
    .practice-page-header { display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:start; gap:12px; }
    .practice-page-header h1 { font-size:clamp(1.65rem,8vw,2.2rem); overflow-wrap:anywhere; }
    .practice-count { min-width:58px; }
    .typed-question-top { padding:15px 16px; }
    .typed-question-card > h2 { padding:26px 16px 13px; font-size:1.35rem; line-height:1.4; }
    .typed-answer-form,.answer-feedback { padding:14px 16px 24px; }
    .question-visual { padding:4px 9px 12px; }
    .question-visual .maths-visual-stage { min-height:175px; padding:10px 6px; }
}