:root {
    font-size: 100%;
    --ink-950: #061723;
    --ink-900: #0a2031;
    --ink-800: #113349;
    --ink-700: #1d4960;
    --ink-600: #3c6274;
    --ink-500: #66808d;
    --ink-300: #b5c5cc;
    --ink-200: #d7e1e4;
    --ink-100: #eaf0f2;
    --ink-50: #f5f8f8;
    --surface: #ffffff;
    --teal-700: #087f77;
    --teal-600: #079b90;
    --teal-500: #10b5a8;
    --teal-200: #a8e8df;
    --teal-100: #d9f5f1;
    --teal-50: #effbf9;
    --coral-600: #e65b43;
    --coral-500: #f2735b;
    --coral-100: #ffe3dc;
    --amber-500: #f5b84b;
    --amber-100: #fff1cc;
    --blue-500: #4c8ee8;
    --blue-100: #e2efff;
    --success: #168661;
    --danger: #d64545;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 5px 18px rgba(6, 23, 35, 0.06);
    --shadow-md: 0 16px 45px rgba(6, 23, 35, 0.1);
    --shadow-lg: 0 28px 80px rgba(6, 23, 35, 0.14);
    --font-body: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-display: "Manrope", var(--font-body);
    --header-height: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--ink-50);
    color: var(--ink-900);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, svg, video, canvas { max-width: 100%; }
button, input, select, textarea { font: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, [tabindex]:focus-visible, summary:focus-visible {
    outline: 3px solid var(--focus-ring, rgba(16, 181, 168, 0.55));
    outline-offset: 3px;
}
::selection { background: var(--teal-200); color: var(--ink-950); }

.container-wide { width: min(100% - 40px, 1240px); margin-inline: auto; }
.page-shell { padding: 42px 0 80px; min-height: calc(100vh - var(--header-height)); }
.section-space { padding: 56px 0; }
.skip-link {
    position: fixed; top: 12px; left: 12px; z-index: 9999; transform: translateY(-150%);
    padding: 10px 16px; border-radius: 8px; background: var(--surface); color: var(--ink-950); font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

/* Header */
.app-header {
    position: sticky; top: 0; z-index: 1000; min-height: var(--header-height);
    background: rgba(245, 248, 248, 0.92); border-bottom: 1px solid transparent;
    backdrop-filter: blur(18px); transition: box-shadow .25s ease, border-color .25s ease;
}
.app-header.is-scrolled { border-color: var(--ink-200); box-shadow: 0 8px 28px rgba(6, 23, 35, .06); }
.header-inner { min-height: var(--header-height); display: flex; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.brand-mark {
    display: grid; place-items: center; width: 45px; height: 45px; border-radius: 14px;
    background: var(--teal-500); color: var(--ink-950); box-shadow: inset 0 -4px 8px rgba(6, 23, 35, .1);
    transform: rotate(-3deg); transition: transform .2s ease;
}
.brand:hover .brand-mark { transform: rotate(2deg) scale(1.04); }
.brand-mark svg { width: 32px; height: 32px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.brand-mark i { font-size: 1.4rem; }
.brand-mark-small { width: 38px; height: 38px; border-radius: 12px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.05; }
.brand-copy strong { font-family: var(--font-display); font-size: 1.25rem; letter-spacing: -.05em; }
.brand-copy strong span { color: var(--teal-600); }
.brand-copy small { margin-top: 5px; color: var(--ink-500); font-size: .64rem; letter-spacing: .06em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; justify-content: center; gap: 4px; flex: 1 1 auto; }
.nav-link-custom {
    position: relative; display: flex; align-items: center; gap: 7px; padding: 9px 12px; border-radius: 11px;
    color: var(--ink-600); font-size: .89rem; font-weight: 600; transition: background .2s ease, color .2s ease;
}
.nav-link-custom:hover { color: var(--ink-950); background: var(--ink-100); }
.nav-link-custom.active { color: var(--teal-700); background: var(--teal-100); }
.nav-link-custom.active::after { content: ""; position: absolute; left: 18px; right: 18px; bottom: -10px; height: 3px; border-radius: 3px 3px 0 0; background: var(--teal-500); }
.profile-menu { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; padding-left: 18px; border-left: 1px solid var(--ink-200); }
.profile-avatar { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--ink-900); color: white; font-size: .78rem; font-weight: 800; }
.profile-copy { display: flex; flex-direction: column; line-height: 1.2; max-width: 105px; }
.profile-copy span { color: var(--ink-500); font-size: .67rem; }
.profile-copy strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .86rem; }
.logout-form { margin: 0; }
.logout-link { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 0; border-radius: 10px; background: transparent; color: var(--ink-500); cursor: pointer; }
.logout-link:hover { background: var(--coral-100); color: var(--coral-600); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 11px; background: var(--ink-100); padding: 10px; }
.nav-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: var(--ink-900); transition: transform .2s ease, opacity .2s ease; }

/* Common components */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--teal-700); font-size: .75rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--teal-500); }
.display-title { margin: 0; font-family: var(--font-display); font-size: clamp(2.25rem, 5vw, 4.75rem); font-weight: 800; letter-spacing: -.055em; line-height: 1.02; }
.page-title { margin: 0; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 800; letter-spacing: -.05em; line-height: 1.08; }
.section-title { margin: 0; font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.35rem); font-weight: 800; letter-spacing: -.045em; line-height: 1.15; }
.text-muted-custom { color: var(--ink-600); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.section-heading p { max-width: 560px; margin: 8px 0 0; color: var(--ink-600); }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; color: var(--teal-700); font-weight: 700; }
.link-arrow i { transition: transform .2s ease; }
.link-arrow:hover i { transform: translateX(4px); }

.btn-primary-custom, .btn-secondary-custom, .btn-light-custom, .btn-danger-soft {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px;
    padding: 11px 20px; border: 1px solid transparent; border-radius: 13px; font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary-custom { background: var(--teal-500); color: var(--ink-950); box-shadow: 0 9px 22px rgba(16, 181, 168, .2); }
.btn-primary-custom:hover { background: #22c5b7; transform: translateY(-2px); box-shadow: 0 13px 30px rgba(16, 181, 168, .27); }
.btn-secondary-custom { background: var(--ink-900); color: white; box-shadow: 0 9px 22px rgba(6, 23, 35, .16); }
.btn-secondary-custom:hover { background: var(--ink-800); color: white; transform: translateY(-2px); }
.btn-light-custom { background: var(--surface); color: var(--ink-900); border-color: var(--ink-200); box-shadow: var(--shadow-sm); }
.btn-light-custom:hover { border-color: var(--teal-500); color: var(--teal-700); transform: translateY(-2px); }
.btn-danger-soft { background: var(--coral-100); color: var(--coral-600); }
.btn-icon { width: 48px; padding: 0; }
.btn-wide { width: 100%; }
.btn-sm-custom { min-height: 40px; padding: 8px 14px; border-radius: 11px; font-size: .88rem; }

.surface-card { background: var(--surface); border: 1px solid var(--ink-200); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card-hover { transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.card-hover:hover { transform: translateY(-5px); border-color: var(--teal-200); box-shadow: var(--shadow-md); }
.icon-tile { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 15px; background: var(--teal-100); color: var(--teal-700); font-size: 1.25rem; }
.icon-tile.coral { background: var(--coral-100); color: var(--coral-600); }
.icon-tile.amber { background: var(--amber-100); color: #a46b08; }
.icon-tile.blue { background: var(--blue-100); color: #2c6dbf; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 999px; background: var(--ink-100); color: var(--ink-600); font-size: .75rem; font-weight: 700; }
.tag.teal { background: var(--teal-100); color: var(--teal-700); }
.tag.coral { background: var(--coral-100); color: var(--coral-600); }
.tag.amber { background: var(--amber-100); color: #92620e; }
.progress-track { height: 8px; overflow: hidden; border-radius: 999px; background: var(--ink-100); }
.progress-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--teal-500), #35d3bf); }

.toast-notice {
    position: fixed; top: 96px; left: 50%; z-index: 1200; display: flex; align-items: center; gap: 10px;
    width: min(calc(100% - 32px), 520px); padding: 13px 16px; transform: translateX(-50%);
    border: 1px solid var(--teal-200); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow-md);
    color: var(--ink-800); font-weight: 600; transition: opacity .25s, transform .25s;
}
.toast-notice > i { color: var(--teal-600); }
.toast-notice button { margin-left: auto; border: 0; background: transparent; color: var(--ink-500); }
.toast-notice.is-hidden { opacity: 0; transform: translate(-50%, -12px); pointer-events: none; }
.toast-error { border-color: #f0bcbc; }
.toast-error > i { color: var(--danger); }

[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* Dashboard */
.dashboard-hero { position: relative; overflow: hidden; padding: 54px 0 36px; background: var(--ink-950); color: white; }
.dashboard-hero::before { content: ""; position: absolute; width: 520px; height: 520px; right: -120px; top: -250px; border-radius: 50%; background: rgba(16, 181, 168, .14); filter: blur(2px); }
.dashboard-hero::after { content: ""; position: absolute; inset: 0; opacity: .15; background-image: radial-gradient(circle at center, var(--teal-200) 1px, transparent 1px); background-size: 24px 24px; mask-image: linear-gradient(to right, transparent, black); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr .75fr; gap: 54px; align-items: center; }
.hero-copy .eyebrow { color: var(--teal-200); }
.hero-copy .display-title { max-width: 760px; }
.hero-copy .display-title span { color: var(--teal-500); }
.hero-copy > p { max-width: 620px; margin: 20px 0 28px; color: var(--ink-300); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-actions .btn-light-custom { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.14); color: white; box-shadow: none; }
.hero-visual { position: relative; min-height: 330px; }
.gesture-orbit { position: absolute; inset: 16px; display: grid; place-items: center; border: 1px solid rgba(168,232,223,.2); border-radius: 50%; }
.gesture-orbit::before, .gesture-orbit::after { content: ""; position: absolute; border: 1px solid rgba(168,232,223,.12); border-radius: 50%; }
.gesture-orbit::before { inset: 38px; }
.gesture-orbit::after { inset: 76px; }
.gesture-core { position: relative; z-index: 2; display: grid; place-items: center; width: 150px; height: 150px; border-radius: 45px; background: var(--teal-500); color: var(--ink-950); box-shadow: 0 25px 65px rgba(16,181,168,.3); transform: rotate(-6deg); }
.gesture-core i { font-size: 5.4rem; }
.orbit-chip { position: absolute; z-index: 3; display: flex; align-items: center; gap: 7px; padding: 8px 12px; border: 1px solid rgba(255,255,255,.13); border-radius: 999px; background: rgba(17,51,73,.78); backdrop-filter: blur(9px); color: var(--ink-200); font-size: .78rem; font-weight: 700; }
.orbit-chip i { color: var(--teal-500); }
.chip-one { top: 12px; left: 18%; }
.chip-two { right: -3px; top: 46%; }
.chip-three { bottom: 20px; left: 3%; }
.hero-stat-row { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 38px; border-top: 1px solid rgba(255,255,255,.1); }
.hero-stat { padding: 20px 0 0; }
.hero-stat + .hero-stat { padding-left: 30px; border-left: 1px solid rgba(255,255,255,.1); }
.hero-stat strong { display: block; font-family: var(--font-display); font-size: 1.6rem; }
.hero-stat span { color: var(--ink-300); font-size: .79rem; }
.dashboard-content { padding: 42px 0 80px; }
.welcome-strip { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; margin-bottom: 38px; padding: 22px 26px; }
.welcome-user { display: flex; align-items: center; gap: 15px; }
.welcome-user .profile-avatar { width: 50px; height: 50px; background: var(--coral-500); }
.welcome-user h2 { margin: 0 0 3px; font-family: var(--font-display); font-size: 1.15rem; }
.welcome-user p { margin: 0; color: var(--ink-500); font-size: .88rem; }
.streak-block { display: flex; align-items: center; gap: 11px; padding-left: 24px; border-left: 1px solid var(--ink-200); }
.streak-block i { color: var(--coral-500); font-size: 1.65rem; }
.streak-block strong { display: block; line-height: 1.1; }
.streak-block span { color: var(--ink-500); font-size: .74rem; }
.module-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; gap: 18px; }
.module-card { position: relative; overflow: hidden; min-height: 290px; padding: 26px; }
.module-card.featured { background: var(--teal-100); border-color: transparent; }
.module-number { position: absolute; top: 12px; right: 20px; color: rgba(6,23,35,.07); font-family: var(--font-display); font-size: 5rem; font-weight: 800; line-height: 1; }
.module-card h3 { margin: 25px 0 9px; font-family: var(--font-display); font-size: 1.34rem; font-weight: 800; letter-spacing: -.03em; }
.module-card p { margin: 0 0 22px; color: var(--ink-600); font-size: .9rem; }
.module-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.module-card .link-arrow { position: absolute; bottom: 25px; left: 26px; }
.insight-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; margin-top: 18px; }
.continue-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; padding: 24px; }
.continue-card .lesson-symbol { display: grid; place-items: center; width: 76px; height: 76px; border-radius: 22px; background: var(--ink-900); color: white; font-family: var(--font-display); font-size: 2rem; font-weight: 800; }
.continue-card h3 { margin: 0 0 4px; font-family: var(--font-display); font-size: 1.08rem; }
.continue-card p { margin: 0 0 11px; color: var(--ink-500); font-size: .82rem; }
.continue-progress { display: flex; align-items: center; gap: 10px; }
.continue-progress .progress-track { flex: 1; max-width: 260px; }
.continue-progress span { color: var(--ink-500); font-size: .75rem; font-weight: 700; }
.tip-card { padding: 24px; background: var(--ink-900); color: white; }
.tip-card .icon-tile { background: rgba(16,181,168,.15); color: var(--teal-500); }
.tip-card h3 { margin: 16px 0 8px; font-family: var(--font-display); font-size: 1.05rem; }
.tip-card p { margin: 0; color: var(--ink-300); font-size: .85rem; }

/* Auth */
.auth-body { min-height: 100vh; background: var(--ink-950); }
.auth-body main { min-height: 100vh; }
.auth-layout { display: grid; grid-template-columns: 1.05fr .95fr; min-height: 100vh; }
.auth-showcase { position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: space-between; padding: 46px clamp(36px, 6vw, 90px); background: var(--ink-950); color: white; }
.auth-showcase::before { content: ""; position: absolute; width: 580px; height: 580px; right: -280px; bottom: -180px; border: 1px solid rgba(16,181,168,.22); border-radius: 50%; box-shadow: 0 0 0 70px rgba(16,181,168,.04), 0 0 0 140px rgba(16,181,168,.025); }
.auth-showcase .brand { position: relative; z-index: 2; align-self: flex-start; color: white; }
.auth-showcase .brand-copy small { color: var(--ink-300); }
.auth-story { position: relative; z-index: 2; max-width: 630px; margin: 80px 0; }
.auth-story .eyebrow { color: var(--teal-200); }
.auth-story-title { margin: 0; font-family: var(--font-display); font-size: clamp(2.5rem, 5.5vw, 5rem); font-weight: 800; letter-spacing: -.06em; line-height: 1; }
.auth-story-title span { color: var(--teal-500); }
.auth-story > p:not(.auth-story-title) { max-width: 540px; margin: 22px 0 30px; color: var(--ink-300); font-size: 1.03rem; }
.auth-points { display: flex; flex-wrap: wrap; gap: 9px; }
.auth-point { display: flex; align-items: center; gap: 7px; padding: 8px 12px; border: 1px solid rgba(255,255,255,.1); border-radius: 999px; color: var(--ink-200); font-size: .78rem; }
.auth-point i { color: var(--teal-500); }
.auth-quote { position: relative; z-index: 2; display: flex; align-items: center; gap: 12px; color: var(--ink-300); font-size: .78rem; }
.auth-quote::before { content: ""; width: 36px; height: 1px; background: var(--teal-500); }
.auth-panel { display: grid; place-items: center; padding: 42px; background: var(--surface); }
.auth-form-wrap { width: min(100%, 460px); }
.auth-form-wrap .mobile-brand { display: none; margin-bottom: 40px; }
.auth-form-wrap h1 { margin: 0 0 8px; font-family: var(--font-display); font-size: 2.2rem; font-weight: 800; letter-spacing: -.05em; }
.auth-form-wrap > p { margin: 0 0 30px; color: var(--ink-500); }
.form-alert { display: flex; gap: 10px; margin-bottom: 22px; padding: 12px 14px; border-radius: 12px; font-size: .86rem; }
.form-alert.error { background: #fff0f0; color: #a72e2e; }
.form-alert.success { background: var(--teal-50); color: var(--teal-700); }
.form-group-custom { margin-bottom: 18px; }
.form-group-custom label { display: flex; justify-content: space-between; margin-bottom: 7px; color: var(--ink-800); font-size: .83rem; font-weight: 700; }
.form-group-custom label a { color: var(--teal-700); font-weight: 600; }
.input-shell { position: relative; }
.input-shell > i:first-child { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--ink-500); }
.input-control-custom { width: 100%; min-height: 52px; padding: 10px 46px 10px 43px; border: 1px solid var(--ink-200); border-radius: 13px; background: var(--ink-50); color: var(--ink-950); transition: border .2s, box-shadow .2s, background .2s; }
.input-control-custom:focus { border-color: var(--teal-500); background: white; box-shadow: 0 0 0 4px rgba(16,181,168,.11); }
.input-control-custom:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; }
.input-control-custom::placeholder { color: #91a4ad; }
.password-toggle { position: absolute; top: 50%; right: 8px; display: grid; place-items: center; width: 37px; height: 37px; transform: translateY(-50%); border: 0; border-radius: 9px; background: transparent; color: var(--ink-500); }
.password-toggle:hover { background: var(--ink-100); }
.form-hint { display: block; margin-top: 6px; color: var(--ink-500); font-size: .73rem; }
.form-check-custom { display: flex; align-items: center; gap: 9px; margin: 2px 0 22px; color: var(--ink-600); font-size: .82rem; }
.form-check-custom input { width: 17px; height: 17px; accent-color: var(--teal-600); }
.auth-switch { margin: 24px 0 0; text-align: center; color: var(--ink-500); font-size: .88rem; }
.auth-switch a { color: var(--teal-700); font-weight: 800; }
.auth-trust { display: flex; align-items: center; justify-content: center; gap: 7px; margin-top: 28px; color: var(--ink-500); font-size: .72rem; }
.auth-trust i { color: var(--success); }

/* Page headers and learning */
.page-intro { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 30px; margin-bottom: 34px; }
.page-intro p { max-width: 650px; margin: 14px 0 0; color: var(--ink-600); }
.page-intro-actions { display: flex; gap: 10px; }
.learn-summary { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; margin-bottom: 34px; }
.path-card { position: relative; overflow: hidden; padding: 28px; background: var(--ink-900); color: white; }
.path-card::after { content: "A"; position: absolute; right: 18px; bottom: -54px; color: rgba(255,255,255,.04); font-family: var(--font-display); font-size: 13rem; font-weight: 800; }
.path-card h2 { margin: 18px 0 7px; font-family: var(--font-display); font-size: 1.55rem; }
.path-card p { max-width: 520px; margin: 0 0 20px; color: var(--ink-300); font-size: .9rem; }
.path-progress { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; gap: 9px; align-items: center; }
.path-progress .progress-track { background: rgba(255,255,255,.12); }
.path-progress span { color: var(--teal-200); font-size: .76rem; font-weight: 700; }
.guidance-card { display: grid; grid-template-columns: auto 1fr; gap: 15px; align-content: center; padding: 26px; }
.guidance-card h3 { margin: 0 0 5px; font-family: var(--font-display); font-size: 1.05rem; }
.guidance-card p { margin: 0; color: var(--ink-600); font-size: .85rem; }
.lesson-tabs { display: flex; gap: 8px; margin-bottom: 22px; padding-bottom: 4px; overflow-x: auto; scrollbar-width: thin; }
.lesson-tab { flex: 0 0 auto; padding: 9px 15px; border: 1px solid var(--ink-200); border-radius: 999px; background: var(--surface); color: var(--ink-600); font-size: .84rem; font-weight: 700; }
.lesson-tab:hover, .lesson-tab.active { border-color: var(--teal-500); background: var(--teal-100); color: var(--teal-700); }
.lesson-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.lesson-card { overflow: hidden; }
.lesson-visual { position: relative; display: grid; place-items: center; min-height: 190px; background: var(--teal-100); }
.lesson-card:nth-child(2n) .lesson-visual { background: var(--blue-100); }
.lesson-card:nth-child(3n) .lesson-visual { background: var(--amber-100); }
.lesson-symbol-large { position: relative; z-index: 2; display: grid; place-items: center; width: 102px; height: 102px; border-radius: 30px; background: var(--surface); box-shadow: var(--shadow-md); color: var(--ink-900); font-family: var(--font-display); font-size: 3.2rem; font-weight: 800; transform: rotate(-3deg); }
.lesson-symbol-large i { font-size: 3.4rem; }
.lesson-visual::before { content: ""; position: absolute; width: 145px; height: 145px; border: 1px solid rgba(6,23,35,.1); border-radius: 50%; }
.lesson-index { position: absolute; top: 14px; left: 16px; font-size: .73rem; font-weight: 800; letter-spacing: .08em; }
.lesson-status { position: absolute; top: 13px; right: 14px; display: grid; place-items: center; width: 29px; height: 29px; border-radius: 50%; background: rgba(255,255,255,.78); color: var(--success); }
.lesson-content { padding: 21px; }
.lesson-content h3 { margin: 0 0 6px; font-family: var(--font-display); font-size: 1.13rem; }
.lesson-content p { min-height: 47px; margin: 0 0 16px; color: var(--ink-600); font-size: .84rem; }
.lesson-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.lesson-tip { color: var(--ink-500); font-size: .72rem; }
.lesson-cta { margin-top: 32px; padding: 30px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; background: var(--teal-500); border: 0; }
.lesson-cta h2 { margin: 0 0 5px; font-family: var(--font-display); font-size: 1.45rem; }
.lesson-cta p { margin: 0; color: var(--ink-800); font-size: .88rem; }

/* AI studio */
.ai-intro-badge { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 999px; background: var(--teal-100); color: var(--teal-700); font-size: .77rem; font-weight: 700; }
.ai-intro-badge .pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal-500); box-shadow: 0 0 0 5px rgba(16,181,168,.13); }
.ai-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .65fr); gap: 20px; align-items: start; }
.camera-card { overflow: hidden; background: var(--ink-950); border: 0; box-shadow: var(--shadow-lg); }
.camera-topbar { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 15px 18px; color: white; border-bottom: 1px solid rgba(255,255,255,.08); }
.camera-status { display: flex; align-items: center; gap: 9px; color: var(--ink-300); font-size: .8rem; font-weight: 600; }
.camera-status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--amber-500); }
.camera-status-dot.live { background: var(--teal-500); box-shadow: 0 0 0 5px rgba(16,181,168,.12); }
.camera-actions { display: flex; gap: 7px; }
.camera-icon-button { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid rgba(255,255,255,.12); border-radius: 9px; background: rgba(255,255,255,.06); color: white; }
.camera-icon-button:hover { background: rgba(255,255,255,.12); }
.camera-stage { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: #020c13; }
.camera-stage video, .camera-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.camera-stage video { opacity: .72; }
.camera-stage canvas { z-index: 2; }
.camera-guide { position: absolute; z-index: 3; left: 50%; top: 50%; width: 48%; aspect-ratio: .78; transform: translate(-50%, -50%); border: 2px dashed rgba(168,232,223,.48); border-radius: 44% 44% 35% 35%; pointer-events: none; }
.camera-guide::before, .camera-guide::after { content: ""; position: absolute; width: 22px; height: 22px; border-color: var(--teal-500); border-style: solid; }
.camera-guide::before { left: -2px; top: -2px; border-width: 3px 0 0 3px; border-radius: 10px 0 0; }
.camera-guide::after { right: -2px; bottom: -2px; border-width: 0 3px 3px 0; border-radius: 0 0 10px; }
.camera-placeholder { position: absolute; inset: 0; z-index: 4; display: grid; place-items: center; padding: 28px; background: radial-gradient(circle at center, #113349 0%, #061723 70%); text-align: center; color: white; }
.camera-placeholder.is-hidden { display: none; }
.placeholder-icon { display: grid; place-items: center; width: 78px; height: 78px; margin: 0 auto 18px; border: 1px solid rgba(255,255,255,.12); border-radius: 25px; background: rgba(16,181,168,.12); color: var(--teal-500); font-size: 2rem; }
.camera-placeholder h2 { margin: 0 0 8px; font-family: var(--font-display); font-size: 1.35rem; }
.camera-placeholder p { max-width: 420px; margin: 0 auto 20px; color: var(--ink-300); font-size: .85rem; }
.camera-feedback { display: grid; grid-template-columns: auto 1fr auto; gap: 15px; align-items: center; padding: 18px; color: white; border-top: 1px solid rgba(255,255,255,.08); }
.detected-sign { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 17px; background: var(--teal-500); color: var(--ink-950); font-family: var(--font-display); font-size: 1.8rem; font-weight: 800; }
.feedback-copy span { display: block; color: var(--ink-300); font-size: .7rem; text-transform: uppercase; letter-spacing: .09em; }
.feedback-copy strong { display: block; font-family: var(--font-display); font-size: 1.05rem; }
.confidence-block { min-width: 115px; text-align: right; }
.confidence-block span { color: var(--ink-300); font-size: .7rem; }
.confidence-track { height: 6px; margin-top: 6px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.1); }
.confidence-fill { width: 0; height: 100%; border-radius: inherit; background: var(--teal-500); transition: width .2s ease; }
.practice-panel { display: grid; gap: 16px; }
.target-card { padding: 24px; }
.target-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.target-card-header span { color: var(--ink-500); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.target-display { display: grid; place-items: center; min-height: 146px; border-radius: 20px; background: var(--teal-100); }
.target-display strong { font-family: var(--font-display); font-size: 5rem; line-height: 1; }
.target-card h2 { margin: 18px 0 5px; font-family: var(--font-display); font-size: 1.18rem; }
.target-card p { margin: 0 0 18px; color: var(--ink-600); font-size: .84rem; }
.target-selector { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.target-button { aspect-ratio: 1; border: 1px solid var(--ink-200); border-radius: 10px; background: var(--surface); color: var(--ink-700); font-weight: 800; }
.target-button:hover, .target-button.active { border-color: var(--teal-500); background: var(--teal-100); color: var(--teal-700); }
.instruction-card { padding: 22px; }
.instruction-card h3 { margin: 0 0 14px; font-family: var(--font-display); font-size: 1rem; }
.instruction-list { display: grid; gap: 13px; }
.instruction-step { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; }
.instruction-step span { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--ink-100); color: var(--ink-700); font-size: .73rem; font-weight: 800; }
.instruction-step p { margin: 2px 0 0; color: var(--ink-600); font-size: .79rem; }
.privacy-note { display: flex; gap: 10px; padding: 15px; border-radius: 13px; background: var(--teal-50); color: var(--teal-700); font-size: .75rem; }

/* Quiz */
.quiz-shell { padding-top: 26px; }
.quiz-toolbar { position: sticky; top: calc(var(--header-height) + 12px); z-index: 50; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; margin-bottom: 24px; padding: 14px 18px; background: rgba(255,255,255,.95); backdrop-filter: blur(16px); }
.quiz-progress-info strong { display: block; font-family: var(--font-display); font-size: .9rem; }
.quiz-progress-info span { color: var(--ink-500); font-size: .73rem; }
.quiz-progress-info:last-child { text-align: right; }
.timer-pill { display: flex; align-items: center; gap: 9px; min-width: 130px; padding: 9px 15px; border-radius: 999px; background: var(--ink-900); color: white; }
.timer-pill i { color: var(--teal-500); }
.timer-pill strong { min-width: 46px; font-family: var(--font-display); font-size: 1.05rem; }
.timer-pill.warning { background: var(--coral-600); animation: timerPulse 1s infinite; }
@keyframes timerPulse { 50% { transform: scale(1.025); } }
.quiz-content { width: min(100%, 840px); margin: 0 auto; }
.quiz-intro { margin-bottom: 26px; text-align: center; }
.quiz-intro h1 { margin: 0 0 8px; font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; letter-spacing: -.04em; }
.quiz-intro p { margin: 0; color: var(--ink-600); }
.question-card { margin-bottom: 18px; padding: 28px; }
.question-number { display: flex; align-items: center; justify-content: space-between; margin-bottom: 15px; color: var(--ink-500); font-size: .74rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.question-number .answered-marker { color: var(--success); opacity: 0; transition: opacity .2s; }
.question-card.is-answered .answered-marker { opacity: 1; }
.question-card h2 { margin: 0 0 21px; font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; line-height: 1.4; }
.option-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quiz-option { position: relative; display: flex; align-items: center; gap: 12px; min-height: 58px; padding: 11px 14px; border: 1px solid var(--ink-200); border-radius: 13px; background: var(--ink-50); cursor: pointer; transition: border .2s, background .2s, transform .2s; }
.quiz-option:hover { border-color: var(--teal-500); background: var(--teal-50); transform: translateY(-1px); }
.quiz-option input { position: absolute; opacity: 0; }
.option-letter { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 10px; background: var(--surface); border: 1px solid var(--ink-200); color: var(--ink-600); font-size: .8rem; font-weight: 800; }
.option-text { color: var(--ink-800); font-size: .88rem; font-weight: 600; }
.quiz-option:has(input:checked) { border-color: var(--teal-500); background: var(--teal-100); }
.quiz-option:has(input:checked) .option-letter { border-color: var(--teal-600); background: var(--teal-600); color: white; }
.quiz-submit-bar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 25px; padding: 22px 25px; }
.quiz-submit-bar p { margin: 0; color: var(--ink-500); font-size: .82rem; }
.quiz-submit-bar p strong { color: var(--ink-900); }
.empty-state { padding: 55px 28px; text-align: center; }
.empty-state .icon-tile { margin: 0 auto 18px; }
.empty-state h2 { margin: 0 0 7px; font-family: var(--font-display); font-size: 1.4rem; }
.empty-state p { max-width: 480px; margin: 0 auto 20px; color: var(--ink-600); }

/* Leaderboard */
.leaderboard-hero { position: relative; overflow: hidden; padding: 48px 0 110px; background: var(--ink-950); color: white; text-align: center; }
.leaderboard-hero::before { content: ""; position: absolute; inset: 0; opacity: .12; background: radial-gradient(circle at center, var(--teal-200) 1px, transparent 1px); background-size: 26px 26px; }
.leaderboard-hero .container-wide { position: relative; z-index: 1; }
.leaderboard-hero .eyebrow { color: var(--teal-200); }
.leaderboard-hero .eyebrow::before { display: none; }
.leaderboard-hero p { max-width: 570px; margin: 12px auto 0; color: var(--ink-300); }
.leaderboard-content { position: relative; z-index: 2; margin-top: -78px; padding-bottom: 80px; }
.podium { display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 14px; align-items: end; width: min(100%, 900px); margin: 0 auto 28px; }
.podium-card { padding: 24px 18px; text-align: center; }
.podium-card.first { padding-top: 32px; border: 2px solid var(--amber-500); }
.podium-rank { display: grid; place-items: center; width: 35px; height: 35px; margin: 0 auto -12px; transform: translateY(-38px); border-radius: 50%; background: var(--ink-900); color: white; font-family: var(--font-display); font-weight: 800; box-shadow: var(--shadow-sm); }
.podium-card.first .podium-rank { width: 43px; height: 43px; background: var(--amber-500); color: var(--ink-950); }
.podium-avatar { display: grid; place-items: center; width: 64px; height: 64px; margin: -4px auto 12px; border-radius: 20px; background: var(--teal-100); color: var(--teal-700); font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; }
.podium-card.first .podium-avatar { width: 78px; height: 78px; background: var(--amber-100); color: #8b600d; }
.podium-card h2 { overflow: hidden; margin: 0 0 5px; text-overflow: ellipsis; white-space: nowrap; font-family: var(--font-display); font-size: 1rem; }
.podium-score { color: var(--ink-500); font-size: .79rem; }
.podium-score strong { color: var(--ink-900); font-size: 1.2rem; }
.ranking-card { overflow: hidden; width: min(100%, 1040px); margin: 0 auto; }
.ranking-header { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 23px 26px; border-bottom: 1px solid var(--ink-200); }
.ranking-header h2 { margin: 0; font-family: var(--font-display); font-size: 1.2rem; }
.ranking-header span { color: var(--ink-500); font-size: .78rem; }
.ranking-table { width: 100%; border-collapse: collapse; }
.ranking-table th { padding: 12px 20px; background: var(--ink-50); color: var(--ink-500); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.ranking-table td { padding: 16px 20px; border-top: 1px solid var(--ink-100); vertical-align: middle; }
.ranking-table tbody tr { transition: background .2s; }
.ranking-table tbody tr:hover { background: var(--teal-50); }
.ranking-table tbody tr.is-current { background: var(--teal-100); }
.rank-number { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 10px; background: var(--ink-100); color: var(--ink-700); font-size: .79rem; font-weight: 800; }
.player-cell { display: flex; align-items: center; gap: 11px; }
.player-avatar { display: grid; place-items: center; width: 39px; height: 39px; border-radius: 12px; background: var(--blue-100); color: #2c6dbf; font-size: .75rem; font-weight: 800; }
.player-cell strong { display: block; font-size: .88rem; }
.player-cell span { color: var(--ink-500); font-size: .7rem; }
.score-cell strong { color: var(--teal-700); font-family: var(--font-display); font-size: 1rem; }
.ranking-footer { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 18px 25px; border-top: 1px solid var(--ink-200); background: var(--ink-50); }
.ranking-footer p { margin: 0; color: var(--ink-500); font-size: .78rem; }

/* Footer */
.app-footer { padding: 26px 0; border-top: 1px solid var(--ink-200); background: var(--surface); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand strong { display: block; font-family: var(--font-display); }
.footer-brand p { margin: 1px 0 0; color: var(--ink-500); font-size: .75rem; }
.footer-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; color: var(--ink-500); font-size: .72rem; }
.footer-meta i { margin-right: 4px; color: var(--teal-600); }

/* Responsive */
@media (max-width: 1100px) {
    .header-inner { gap: 16px; }
    .brand-copy small, .profile-copy { display: none; }
    .profile-menu { padding-left: 10px; }
    .nav-link-custom { padding-inline: 9px; }
    .module-grid { grid-template-columns: 1fr 1fr; }
    .module-card.featured { grid-column: span 2; }
}
@media (max-width: 900px) {
    :root { --header-height: 72px; }
    .container-wide { width: min(100% - 30px, 1240px); }
    .nav-toggle { display: block; margin-left: auto; }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .primary-nav { position: fixed; top: var(--header-height); left: 15px; right: 15px; display: grid; align-content: start; padding: 14px; transform: translateY(-15px); opacity: 0; visibility: hidden; border: 1px solid var(--ink-200); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow-lg); transition: .2s ease; }
    .primary-nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-link-custom { padding: 12px 14px; }
    .nav-link-custom.active::after { display: none; }
    .profile-menu { border: 0; padding: 0; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .insight-grid, .learn-summary, .ai-layout { grid-template-columns: 1fr; }
    .lesson-grid { grid-template-columns: 1fr 1fr; }
    .auth-layout { grid-template-columns: 1fr; }
    .auth-showcase { display: none; }
    .auth-panel { min-height: 100vh; padding: 32px 22px; }
    .auth-form-wrap .mobile-brand { display: inline-flex; }
}
@media (max-width: 680px) {
    .container-wide { width: min(100% - 24px, 1240px); }
    .page-shell { padding: 28px 0 55px; }
    .profile-menu .profile-avatar { width: 36px; height: 36px; }
    .display-title { font-size: 2.35rem; }
    .dashboard-hero { padding-top: 38px; }
    .hero-stat-row { grid-template-columns: 1fr; gap: 13px; margin-top: 28px; }
    .hero-stat { display: flex; align-items: baseline; gap: 10px; padding-top: 13px; }
    .hero-stat + .hero-stat { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.08); }
    .hero-stat strong { font-size: 1.25rem; }
    .welcome-strip { grid-template-columns: 1fr; padding: 18px; }
    .streak-block { padding: 14px 0 0; border-left: 0; border-top: 1px solid var(--ink-200); }
    .section-heading { align-items: start; flex-direction: column; }
    .module-grid { grid-template-columns: 1fr; }
    .module-card.featured { grid-column: auto; }
    .module-card { min-height: 270px; }
    .continue-card { grid-template-columns: auto 1fr; }
    .continue-card > a { grid-column: span 2; width: 100%; }
    .page-intro { grid-template-columns: 1fr; }
    .page-intro-actions { width: 100%; }
    .page-intro-actions a { flex: 1; }
    .lesson-grid { grid-template-columns: 1fr; }
    .lesson-cta { grid-template-columns: 1fr; }
    .lesson-cta a { width: 100%; }
    .camera-feedback { grid-template-columns: auto 1fr; }
    .confidence-block { grid-column: span 2; text-align: left; }
    .target-selector { grid-template-columns: repeat(6, 1fr); }
    .quiz-toolbar { top: calc(var(--header-height) + 5px); grid-template-columns: 1fr auto; }
    .quiz-progress-info:last-child { display: none; }
    .quiz-content { width: 100%; }
    .question-card { padding: 21px 17px; }
    .option-grid { grid-template-columns: 1fr; }
    .quiz-submit-bar { align-items: stretch; flex-direction: column; }
    .quiz-submit-bar button { width: 100%; }
    .podium { display: flex; align-items: stretch; overflow-x: auto; padding: 34px 2px 5px; scroll-snap-type: x mandatory; }
    .podium-card { min-width: 230px; scroll-snap-align: center; }
    .podium-card.first { order: -1; }
    .ranking-card { overflow-x: auto; }
    .ranking-table { min-width: 690px; }
    .ranking-header, .ranking-footer { min-width: 690px; }
    .footer-inner { align-items: flex-start; flex-direction: column; }
    .footer-meta { justify-content: flex-start; }
    .footer-meta span:nth-child(2) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
    [data-reveal] { opacity: 1; transform: none; }
}


/* Latest quiz result */
.result-banner {
    display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px;
    width: min(100%, 1040px); margin: 0 auto 24px; padding: 22px 25px;
    border-color: var(--teal-200); background: linear-gradient(135deg, var(--surface), var(--teal-50));
}
.result-badge { display: grid; place-items: center; width: 62px; height: 62px; border-radius: 19px; background: var(--teal-500); color: var(--ink-950); font-size: 1.55rem; }
.result-banner .eyebrow { margin-bottom: 2px; }
.result-banner h2 { margin: 0 0 3px; font-family: var(--font-display); font-size: 1.25rem; }
.result-banner p { margin: 0; color: var(--ink-600); font-size: .82rem; }
@media (max-width: 680px) {
    .result-banner { grid-template-columns: auto 1fr; }
    .result-banner > a { grid-column: span 2; width: 100%; }
}


/* Keyboard and assistive selection states */
.quiz-option:has(input:focus-visible) {
    outline: 3px solid rgba(16, 181, 168, .4);
    outline-offset: 3px;
    border-color: var(--teal-600);
}
.lesson-tab[aria-pressed="true"], .target-button[aria-pressed="true"] {
    border-color: var(--teal-500);
    background: var(--teal-100);
    color: var(--teal-700);
}


/* Quiz category hub */
.quiz-hub-hero {
    display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 36px;
    margin-bottom: 32px; padding: 36px; border-radius: var(--radius-xl);
    background: var(--ink-950); color: white; overflow: hidden; position: relative;
}
.quiz-hub-hero::after { content: "?"; position: absolute; right: 170px; bottom: -75px; color: rgba(255,255,255,.04); font: 800 15rem/1 var(--font-display); }
.quiz-hub-hero .eyebrow { color: var(--teal-200); }
.quiz-hub-hero p { max-width: 680px; margin: 14px 0 0; color: var(--ink-300); }
.quiz-hub-score { position: relative; z-index: 1; display: grid; grid-template-columns: auto auto; align-items: center; gap: 0 10px; min-width: 160px; padding: 18px; border: 1px solid rgba(255,255,255,.12); border-radius: 20px; background: rgba(255,255,255,.06); }
.quiz-hub-score i { grid-row: span 2; color: var(--amber-500); font-size: 2rem; }
.quiz-hub-score strong { font: 800 1.65rem/1 var(--font-display); }
.quiz-hub-score span { color: var(--ink-300); font-size: .7rem; text-transform: uppercase; }
.quiz-type-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.quiz-type-card { position: relative; overflow: hidden; display: flex; flex-direction: column; min-height: 400px; padding: 27px; }
.quiz-type-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--teal-500); }
.quiz-type-card.accent-blue::before { background: var(--blue-500); }
.quiz-type-card.accent-coral::before { background: var(--coral-500); }
.quiz-type-icon { display: grid; place-items: center; width: 62px; height: 62px; border-radius: 19px; background: var(--teal-100); color: var(--teal-700); font-size: 1.65rem; }
.accent-blue .quiz-type-icon { background: var(--blue-100); color: #2c6dbf; }
.accent-coral .quiz-type-icon { background: var(--coral-100); color: var(--coral-600); }
.quiz-type-number { position: absolute; right: 22px; top: 14px; color: var(--ink-100); font: 800 4.7rem/1 var(--font-display); }
.quiz-type-card > .tag { align-self: flex-start; margin-top: 22px; }
.quiz-type-card h2 { margin: 18px 0 8px; font: 800 1.35rem/1.2 var(--font-display); }
.quiz-type-card > p { margin: 0 0 18px; color: var(--ink-600); font-size: .88rem; }
.quiz-type-meta { display: grid; gap: 7px; margin-bottom: 24px; color: var(--ink-500); font-size: .76rem; }
.quiz-type-meta i { margin-right: 6px; color: var(--teal-600); }
.quiz-type-card .btn-wide { margin-top: auto; }
.quiz-hub-note { display: flex; gap: 12px; margin-top: 20px; padding: 16px 18px; border-radius: 14px; background: var(--amber-100); color: #755018; }
.quiz-hub-note p { margin: 0; font-size: .8rem; }
.quiz-back-link { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 18px; color: var(--ink-500); font-size: .8rem; font-weight: 700; }
.quiz-back-link:hover { color: var(--teal-700); }

/* Quiz answer review */
.review-page { background: linear-gradient(180deg, var(--teal-50), var(--ink-50) 360px); }
.review-summary { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; padding: 30px; border-color: var(--teal-200); }
.review-score-ring { display: grid; place-items: center; width: 132px; height: 132px; border-radius: 50%; background: conic-gradient(var(--teal-500) var(--score-progress), var(--ink-100) 0); position: relative; }
.review-score-ring::before { content: ""; position: absolute; inset: 11px; border-radius: 50%; background: white; }
.review-score-ring > div { position: relative; z-index: 1; text-align: center; }
.review-score-ring strong { display: block; font: 800 2.2rem/1 var(--font-display); }
.review-score-ring span { color: var(--ink-500); font-size: .75rem; }
.review-summary-copy .eyebrow { margin-bottom: 5px; }
.review-summary-copy h1 { margin: 0 0 7px; font: 800 clamp(1.45rem, 3vw, 2rem)/1.15 var(--font-display); }
.review-summary-copy > p { max-width: 690px; margin: 0; color: var(--ink-600); font-size: .88rem; }
.review-stats { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.review-stat { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px; background: var(--ink-100); color: var(--ink-600); font-size: .74rem; }
.review-stat.correct { background: var(--teal-100); color: var(--teal-700); }
.review-stat.incorrect { background: var(--coral-100); color: var(--coral-600); }
.review-summary-actions { display: grid; gap: 9px; min-width: 165px; }
.review-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 42px 0 22px; }
.review-list { display: grid; gap: 16px; width: min(100%, 950px); margin: 0 auto; }
.review-card { overflow: hidden; padding: 26px; border-left: 5px solid var(--teal-500); }
.review-card.is-incorrect { border-left-color: var(--coral-500); }
.review-card-status { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.review-card-status > span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--teal-100); color: var(--teal-700); }
.is-incorrect .review-card-status > span { background: var(--coral-100); color: var(--coral-600); }
.review-card-status small { display: block; color: var(--ink-500); font-size: .67rem; font-weight: 800; letter-spacing: .1em; }
.review-card-status strong { font-size: .85rem; color: var(--teal-700); }
.is-incorrect .review-card-status strong { color: var(--coral-600); }
.review-card h3 { margin: 0 0 18px; font: 700 1.08rem/1.45 var(--font-display); }
.review-answer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.review-answer { padding: 13px 15px; border: 1px solid var(--ink-200); border-radius: 12px; background: var(--ink-50); }
.review-answer span { display: block; margin-bottom: 3px; color: var(--ink-500); font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.review-answer strong { font-size: .84rem; }
.review-answer.answer-correct { border-color: var(--teal-200); background: var(--teal-50); }
.review-answer.answer-correct strong { color: var(--teal-700); }
.review-answer.answer-wrong { border-color: #f2c3ba; background: #fff6f3; }
.review-answer.answer-wrong strong { color: var(--coral-600); }
.review-explanation { display: flex; gap: 11px; margin-top: 15px; padding: 14px; border-radius: 12px; background: var(--amber-100); color: #72501b; }
.review-explanation > i { margin-top: 2px; color: #b77708; }
.review-explanation strong { display: block; font-size: .77rem; }
.review-explanation p { margin: 2px 0 0; font-size: .8rem; }
.review-footer-actions { display: flex; justify-content: center; gap: 10px; margin-top: 28px; }

@media (max-width: 900px) {
    .quiz-type-grid { grid-template-columns: 1fr 1fr; }
    .review-summary { grid-template-columns: auto 1fr; }
    .review-summary-actions { grid-column: span 2; grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
    .quiz-hub-hero { grid-template-columns: 1fr; padding: 25px; }
    .quiz-hub-score { width: 100%; }
    .quiz-type-grid { grid-template-columns: 1fr; }
    .quiz-type-card, .quiz-type-card:last-child { grid-column: auto; min-height: 370px; }
    .review-summary { grid-template-columns: 1fr; text-align: center; padding: 22px 17px; }
    .review-score-ring { margin: 0 auto; }
    .review-stats { justify-content: center; }
    .review-summary-actions { grid-column: auto; grid-template-columns: 1fr; }
    .review-heading { align-items: start; flex-direction: column; }
    .review-card { padding: 20px 16px; }
    .review-answer-grid { grid-template-columns: 1fr; }
    .review-footer-actions { flex-direction: column; }
}


/* Proposal-aligned progress and category rankings */
.schema-alert {
    display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 16px;
    margin: 0 auto 28px; padding: 20px 22px; border-color: #efd18b; background: var(--amber-100);
}
.schema-alert h2 { margin: 0 0 3px; font: 800 1rem/1.25 var(--font-display); }
.schema-alert p { margin: 0; color: #755018; font-size: .82rem; }
.dashboard-progress { margin: 0 0 40px; }
.progress-type-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.progress-type-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 17px; padding: 22px; }
.progress-type-copy > span { display: block; color: var(--ink-500); font-size: .72rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.progress-type-copy > strong { display: block; margin: 3px 0; font: 800 1.7rem/1 var(--font-display); }
.progress-type-copy > strong small { color: var(--ink-500); font-size: .75rem; }
.progress-type-copy p { margin: 0; color: var(--ink-500); font-size: .74rem; }
.history-section { margin-top: 42px; }
.history-card { overflow: hidden; }
.history-list { display: grid; }
.history-row { display: grid; grid-template-columns: auto minmax(150px, 1fr) auto auto auto; align-items: center; gap: 17px; padding: 16px 20px; }
.history-row + .history-row { border-top: 1px solid var(--ink-100); }
.history-main strong, .history-metric strong { display: block; font-size: .84rem; }
.history-main span, .history-metric span { display: block; color: var(--ink-500); font-size: .69rem; }
.history-metric { min-width: 80px; text-align: right; }
.history-empty { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 35px 22px; color: var(--ink-500); }
.history-empty > i { color: var(--teal-600); font-size: 1.7rem; }
.history-empty strong { display: block; color: var(--ink-800); }
.history-empty p { margin: 2px 0 0; font-size: .8rem; }
.ranking-type-tabs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; width: min(100%, 720px); margin: 0 auto 70px; padding: 8px; }
.ranking-type-tab { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid transparent; border-radius: 17px; color: var(--ink-600); transition: .2s ease; }
.ranking-type-tab:hover { background: var(--ink-50); color: var(--ink-900); }
.ranking-type-tab.active { border-color: var(--teal-200); background: var(--teal-100); color: var(--teal-700); }
.ranking-type-tab small { display: block; font-size: .62rem; font-weight: 800; letter-spacing: .1em; }
.ranking-type-tab strong { display: block; font: 800 1rem/1.15 var(--font-display); }
@media (max-width: 900px) {
    .progress-type-grid { grid-template-columns: 1fr; }
    .history-row { grid-template-columns: auto 1fr auto auto; }
    .history-row > a { grid-column: 2 / -1; width: 100%; }
}
@media (max-width: 680px) {
    .progress-type-card { grid-template-columns: auto 1fr; }
    .progress-type-card > a { grid-column: span 2; width: 100%; }
    .history-row { grid-template-columns: auto 1fr auto; gap: 12px; }
    .history-row .history-time { display: none; }
    .history-row > a { grid-column: 1 / -1; }
    .ranking-type-tabs { margin-bottom: 55px; }
    .ranking-type-tab { padding: 10px; }
    .ranking-type-tab .icon-tile { width: 42px; height: 42px; }
}


/* Written-interface localization */
html:lang(zh-Hans) body {
    --font-body: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
    --font-display: "Noto Sans SC", var(--font-body);
}
html:lang(ta) body {
    --font-body: "Noto Sans Tamil", "Nirmala UI", system-ui, sans-serif;
    --font-display: "Noto Sans Tamil", var(--font-body);
}
html:lang(zh-Hans) .brand-copy small,
html:lang(ta) .brand-copy small,
html:lang(zh-Hans) .eyebrow,
html:lang(ta) .eyebrow { letter-spacing: .03em; text-transform: none; }
.locale-form {
    position: relative; display: flex; align-items: center; gap: 5px; flex: 0 1 auto;
    min-width: 0; padding: 4px 5px 4px 9px; border: 1px solid var(--ink-200);
    border-radius: 12px; background: var(--surface); color: var(--ink-600);
}
.locale-form > i { flex: 0 0 auto; color: var(--teal-700); }
.locale-form select {
    min-width: 0; max-width: 116px; height: 32px; padding: 0 22px 0 4px; border: 0;
    outline: 0; background: transparent; color: var(--ink-800); font-size: .76rem; font-weight: 700;
}
.locale-form button {
    display: inline-flex; align-items: center; justify-content: center; gap: 5px;
    min-height: 32px; padding: 5px 8px; border: 0; border-radius: 8px;
    background: var(--teal-100); color: var(--teal-700); font-size: .68rem; font-weight: 800;
    white-space: nowrap;
}
.locale-form button:hover { background: var(--teal-200); }
.auth-locale-control { position: fixed; top: 18px; right: 20px; z-index: 1100; }
.auth-locale-control .locale-form { box-shadow: var(--shadow-md); }
.auth-locale-control .locale-form select { max-width: 150px; }
.display-title, .page-title, .section-title, .auth-story-title, .module-card h3,
.quiz-type-card h2, .review-card h3 { overflow-wrap: anywhere; }
.nav-link-custom span, .btn-primary-custom, .btn-secondary-custom, .btn-light-custom,
.ranking-type-tab strong, .profile-copy span { white-space: normal; }

@media (max-width: 1180px) {
    .header-inner { gap: 12px; }
    .locale-form select { max-width: 88px; }
    .app-header .locale-form button { width: 32px; padding-inline: 6px; }
    .app-header .locale-form button span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
}
@media (max-width: 900px) {
    .app-header .locale-form { margin-left: auto; }
    .nav-toggle { margin-left: 0; }
    .primary-nav { max-height: calc(100vh - var(--header-height) - 20px); overflow-y: auto; }
}
@media (max-width: 680px) {
    .header-inner { gap: 8px; }
    .header-inner > .brand .brand-copy { display: none; }
    .app-header .locale-form { padding-left: 7px; }
    .app-header .locale-form select { width: 72px; }
    .profile-menu .profile-avatar { display: none; }
    .auth-locale-control { top: 10px; right: 10px; left: 10px; display: flex; justify-content: flex-end; }
    .auth-locale-control .locale-form { max-width: calc(100vw - 20px); }
    .auth-panel { padding-top: 82px; }
    .quiz-submit-bar, .review-summary-actions, .review-footer-actions, .page-intro-actions { min-width: 0; }
}



/* Global accessibility controls */
html[data-text-size="default"] { font-size: 100%; }
html[data-text-size="large"] { font-size: 112.5%; }
html[data-text-size="extra-large"] { font-size: 125%; }

.accessibility-widget {
    position: fixed; right: 18px; bottom: 18px; z-index: 1600;
    display: flex; flex-direction: column; align-items: flex-end; gap: 9px;
    max-width: calc(100vw - 24px);
}
.accessibility-trigger {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 46px; max-width: min(100%, 310px); padding: 9px 14px;
    border: 2px solid var(--teal-700); border-radius: 999px;
    background: var(--surface); color: var(--ink-900); box-shadow: var(--shadow-md);
    font-weight: 800; text-align: center;
}
.accessibility-trigger:hover { background: var(--teal-50); }
.accessibility-trigger i { color: var(--teal-700); font-size: 1.2rem; }
.accessibility-panel {
    width: min(430px, calc(100vw - 24px)); max-height: min(680px, calc(100vh - 90px));
    padding: 20px; overflow: auto; overscroll-behavior: contain;
    border: 2px solid var(--ink-200); border-radius: var(--radius-md);
    background: var(--surface); color: var(--ink-900); box-shadow: var(--shadow-lg);
}
.accessibility-panel[hidden] { display: none; }
.accessibility-panel-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px; align-items: start; }
.accessibility-panel h2 { margin: 0 0 4px; font: 800 1.25rem/1.25 var(--font-display); overflow-wrap: anywhere; }
.accessibility-panel p { margin: 0; color: var(--ink-600); font-size: .86rem; }
.accessibility-close {
    display: grid; place-items: center; width: 40px; min-height: 40px; padding: 0;
    border: 1px solid var(--ink-200); border-radius: 10px; background: var(--ink-50); color: var(--ink-900);
}
.accessibility-fieldset { min-width: 0; margin: 18px 0 14px; padding: 0; border: 0; }
.accessibility-fieldset legend { margin-bottom: 8px; color: var(--ink-800); font-size: .86rem; font-weight: 800; }
.accessibility-radio-group { display: flex; flex-wrap: wrap; gap: 8px; }
.accessibility-radio-group label {
    display: inline-flex; flex: 1 1 105px; align-items: center; gap: 7px;
    min-height: 42px; padding: 8px 10px; border: 1px solid var(--ink-200); border-radius: 10px;
    background: var(--ink-50); font-size: .82rem; font-weight: 700; overflow-wrap: anywhere;
}
.accessibility-radio-group input, .accessibility-check > input { flex: 0 0 auto; width: 18px; height: 18px; accent-color: var(--teal-700); }
.accessibility-check {
    display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: start;
    margin-top: 10px; padding: 11px; border: 1px solid var(--ink-200); border-radius: 11px;
    background: var(--ink-50); cursor: pointer;
}
.accessibility-check > input { margin-top: 3px; }
.accessibility-check strong, .accessibility-check small { display: block; overflow-wrap: anywhere; }
.accessibility-check strong { color: var(--ink-900); font-size: .85rem; }
.accessibility-check small { margin-top: 2px; color: var(--ink-600); font-size: .75rem; line-height: 1.45; }
.accessibility-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-top: 17px; }
.accessibility-actions button { flex: 1 1 145px; white-space: normal; }
.btn-primary-custom, .btn-secondary-custom, .btn-light-custom, .btn-danger-soft,
.locale-form button, .nav-link-custom { overflow-wrap: anywhere; }
[data-submit-loading][aria-busy="true"] button.is-loading[aria-disabled="true"] { pointer-events: none; }

html[data-contrast="high"] {
    --ink-950: #000000;
    --ink-900: #050505;
    --ink-800: #111111;
    --ink-700: #181818;
    --ink-600: #242424;
    --ink-500: #333333;
    --ink-300: #e3e3e3;
    --ink-200: #595959;
    --ink-100: #e7e7e7;
    --ink-50: #ffffff;
    --surface: #ffffff;
    --teal-700: #005f58;
    --teal-600: #006c63;
    --teal-500: #00a99d;
    --teal-200: #5fe4d6;
    --teal-100: #c8fff8;
    --teal-50: #effffc;
    --coral-600: #a62b18;
    --coral-500: #c33b24;
    --coral-100: #ffe2dc;
    --success: #006b45;
    --danger: #a40000;
    --focus-ring: #ff9f00;
    --shadow-sm: 0 0 0 2px #181818;
    --shadow-md: 0 0 0 3px #181818;
    --shadow-lg: 0 0 0 4px #181818;
}
html[data-contrast="high"] body { background: #ffffff; color: #000000; }
html[data-contrast="high"] .surface-card,
html[data-contrast="high"] .accessibility-panel,
html[data-contrast="high"] .locale-form,
html[data-contrast="high"] .toast-notice { border-color: #181818; }
html[data-contrast="high"] .app-header { background: #ffffff; border-color: #181818; backdrop-filter: none; }
html[data-contrast="high"] .dashboard-hero,
html[data-contrast="high"] .leaderboard-hero,
html[data-contrast="high"] .quiz-hub-hero,
html[data-contrast="high"] .path-card,
html[data-contrast="high"] .tip-card,
html[data-contrast="high"] .camera-card,
html[data-contrast="high"] .auth-body,
html[data-contrast="high"] .auth-showcase { background: #000000; color: #ffffff; }
html[data-contrast="high"] .camera-placeholder { background: #000000; }
html[data-contrast="high"] .camera-topbar,
html[data-contrast="high"] .camera-feedback { border-color: #ffffff; }
html[data-contrast="high"] .camera-status,
html[data-contrast="high"] .feedback-copy span,
html[data-contrast="high"] .confidence-block span,
html[data-contrast="high"] .auth-story > p:not(.auth-story-title),
html[data-contrast="high"] .auth-quote,
html[data-contrast="high"] .dashboard-hero p,
html[data-contrast="high"] .leaderboard-hero p,
html[data-contrast="high"] .quiz-hub-hero p,
html[data-contrast="high"] .path-card p,
html[data-contrast="high"] .tip-card p { color: #ffffff; }
html[data-contrast="high"] .auth-panel { background: #ffffff; color: #000000; }
html[data-contrast="high"] .camera-icon-button,
html[data-contrast="high"] .auth-point { border-color: #ffffff; color: #ffffff; }
html[data-contrast="high"] .camera-stage { border: 2px solid #ffffff; }
html[data-contrast="high"] .form-alert.error { border: 2px solid #a40000; background: #ffffff; color: #760000; }
html[data-contrast="high"] .nav-link-custom.active,
html[data-contrast="high"] .target-button.active,
html[data-contrast="high"] .target-button[aria-pressed="true"] { outline: 2px solid currentColor; }

html[data-reduce-motion="true"] { scroll-behavior: auto !important; }
html[data-reduce-motion="true"] *,
html[data-reduce-motion="true"] *::before,
html[data-reduce-motion="true"] *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
}
html[data-reduce-motion="true"] [data-reveal] { opacity: 1; transform: none; }

html[data-text-size="extra-large"] .app-header .brand-copy small,
html[data-text-size="extra-large"] .app-header .profile-copy { display: none; }
html[data-text-size="extra-large"] .header-inner { gap: 10px; padding-block: 5px; }
html[data-text-size="extra-large"] .nav-link-custom { padding-inline: 8px; }
html:lang(zh-Hans) .accessibility-panel,
html:lang(ta) .accessibility-panel { line-height: 1.65; }

@media (max-width: 680px) {
    .accessibility-widget { right: 12px; bottom: 12px; }
    .accessibility-trigger span { max-width: min(230px, calc(100vw - 80px)); }
    .accessibility-panel { padding: 16px; max-height: calc(100vh - 74px); }
    .accessibility-radio-group { display: grid; grid-template-columns: 1fr; }
    .accessibility-radio-group label { width: 100%; }
    .accessibility-actions { flex-direction: column; }
    .accessibility-actions button { flex-basis: auto; width: 100%; }
    .target-selector { grid-template-columns: repeat(auto-fit, minmax(44px, 1fr)); }
    .camera-actions, .page-intro-actions, .hero-actions { flex-wrap: wrap; }
    .auth-form-wrap { min-width: 0; }
}

@media (forced-colors: active) {
    * { forced-color-adjust: auto; }
    button, a, input, select, textarea, summary, [tabindex] { outline-color: Highlight; }
    .accessibility-trigger, .accessibility-panel, .accessibility-check,
    .accessibility-radio-group label, .surface-card, .input-control-custom,
    .nav-link-custom, .target-button { border: 2px solid CanvasText; }
    .accessibility-trigger, .accessibility-panel, .accessibility-check,
    .accessibility-radio-group label { background: Canvas; color: CanvasText; }
    .nav-link-custom.active, .target-button[aria-pressed="true"] { outline: 3px solid Highlight; }
    .confidence-fill, .progress-fill { background: Highlight; }
    .camera-status-dot.live { background: Highlight; }
}


/* BIM sign catalog, categorized practice, and camera practical */
.sign-catalog-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.sign-card .lesson-visual { min-height: 138px; }
.sign-card .lesson-symbol-large { width: 78px; height: 78px; border-radius: 23px; font-size: 2.45rem; }
.sign-card .lesson-content { display: flex; flex-direction: column; min-height: 350px; padding: 18px; }
.sign-card .lesson-content > p { min-height: 0; }
.sign-badges { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.sign-badges .tag { padding: 4px 7px; font-size: .66rem; }
.sign-card .lesson-tip { margin-top: auto; padding-top: 2px; }
.camera-unavailable { margin: 12px 0 0 !important; padding: 10px; border-left: 3px solid var(--amber-500); border-radius: 8px; background: var(--amber-100); color: #72501b !important; font-size: .73rem !important; }
.sign-card .lesson-footer { align-items: flex-end; margin-top: 14px; }
.sign-reference-link { color: var(--teal-700); font-size: .7rem; font-weight: 800; text-align: right; }
.reference-disclaimer { display: flex; align-items: flex-start; gap: 8px; margin: 16px 0 0; color: var(--ink-600); font-size: .78rem; }
.reference-disclaimer a { color: var(--teal-700); font-weight: 800; text-decoration: underline; }
.practice-category-bar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 12px; padding: 16px 18px; }
.practice-category-bar strong, .practice-category-bar span { display: block; }
.practice-category-bar strong { font: 800 1rem/1.2 var(--font-display); }
.practice-category-bar span { color: var(--ink-500); font-size: .74rem; }
.practice-category-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.practice-category-controls .lesson-tab { margin: 0; }
.category-scope-note { display: flex; gap: 9px; margin: 0 0 22px; padding: 11px 14px; border-radius: 12px; background: var(--blue-100); color: var(--ink-700); font-size: .78rem; }
.categorized-target-selector { grid-template-columns: repeat(5, minmax(42px, 1fr)); }
.challenge-section-heading { margin: 34px 0 18px; }
.challenge-section-heading:first-of-type { margin-top: 0; }
.challenge-section-heading h2 { margin: 0; font: 800 1.55rem/1.2 var(--font-display); }
.challenge-section-heading p { margin: 5px 0 0; color: var(--ink-600); }
.practical-section-heading { margin-top: 44px; }
.practical-type-card::before { background: var(--coral-500); }
.practical-type-card .quiz-type-icon { background: var(--coral-100); color: var(--coral-600); }
.practical-type-card .quiz-type-number { top: 22px; font-size: 2.4rem; }
.practical-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .55fr); gap: 24px; align-items: end; margin-bottom: 24px; }
.practical-intro p { max-width: 700px; margin: 12px 0 0; color: var(--ink-600); }
.prototype-warning { display: flex; align-items: flex-start; gap: 10px; padding: 15px 17px; border: 1px solid #efd18b; border-radius: 14px; background: var(--amber-100); color: #684715; font-size: .78rem; }
.prototype-warning i { flex: 0 0 auto; margin-top: 2px; font-size: 1.15rem; }
.practical-toolbar { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; margin-bottom: 18px; padding: 13px 17px; }
.practical-toolbar > div:first-child strong, .practical-toolbar > div:first-child span { display: block; }
.practical-toolbar > div:first-child strong { font: 800 .92rem/1.3 var(--font-display); }
.practical-toolbar > div:first-child span { color: var(--ink-500); font-size: .74rem; }
.practical-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(290px, .55fr); gap: 20px; align-items: start; }
.practical-target-panel { padding: 24px; }
.practical-target-symbol { display: grid; place-items: center; min-height: 125px; border-radius: 20px; background: var(--teal-100); font: 800 4.5rem/1 var(--font-display); }
.practical-target-panel h2 { margin: 15px 0; font: 800 1.15rem/1.3 var(--font-display); }
.practical-target-list { display: grid; gap: 7px; margin: 0 0 18px; padding: 0; list-style: none; }
.practical-target-list li { display: grid; grid-template-columns: 28px 28px 1fr; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--ink-200); border-radius: 10px; color: var(--ink-600); }
.practical-target-list li > span { display: grid; place-items: center; width: 27px; height: 27px; border-radius: 8px; background: var(--ink-100); font-size: .7rem; font-weight: 800; }
.practical-target-list li strong { color: var(--ink-900); }
.practical-target-list li small { overflow-wrap: anywhere; font-size: .68rem; }
.practical-target-list li[aria-current="step"] { border: 2px solid var(--teal-500); background: var(--teal-50); }
.practical-target-list li.is-confirmed { border-color: var(--teal-500); background: var(--teal-100); }
.practical-target-list li.is-confirmed::after { content: "✓"; color: var(--success); font-weight: 900; }
.practical-target-list li.is-skipped { border-color: var(--coral-500); background: var(--coral-100); }
.practical-target-list li.is-skipped::after { content: "—"; color: var(--coral-600); font-weight: 900; }
.practical-privacy { display: flex; gap: 13px; margin-top: 18px; padding: 17px 20px; color: var(--teal-700); }
.practical-privacy > i { flex: 0 0 auto; font-size: 1.3rem; }
.practical-privacy p { margin: 0; font-size: .78rem; }
.practical-review-warning { width: min(100%, 950px); margin: 22px auto; }
.practical-review-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; width: min(100%, 1100px); margin: 0 auto; }
.practical-review-item { position: relative; display: grid; justify-items: center; gap: 12px; padding: 20px 14px; text-align: center; border-top: 4px solid var(--teal-500); }
.practical-review-item.is-skipped { border-top-color: var(--coral-500); }
.practical-review-item .lesson-symbol-large { width: 70px; height: 70px; border-radius: 20px; font-size: 2.2rem; transform: none; }
.practical-review-number { position: absolute; top: 8px; left: 10px; color: var(--ink-500); font-size: .7rem; font-weight: 800; }
.practical-review-item h2 { margin: 0 0 5px; font: 800 .9rem/1.3 var(--font-display); }
.practical-review-item p { margin: 0; color: var(--teal-700); font-size: .73rem; font-weight: 800; }
.practical-review-item.is-skipped p { color: var(--coral-600); }
.ranking-type-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); width: min(100%, 760px); }
.progress-type-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

html[data-text-size="extra-large"] .sign-catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
html[data-text-size="extra-large"] .sign-card .lesson-content { min-height: 390px; }
html[data-text-size="extra-large"] .practical-review-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
html[data-text-size="extra-large"] .ranking-type-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
html[data-contrast="high"] .camera-unavailable,
html[data-contrast="high"] .prototype-warning,
html[data-contrast="high"] .category-scope-note { border: 2px solid #181818; color: #000000 !important; }
html[data-contrast="high"] .practical-target-list li[aria-current="step"],
html[data-contrast="high"] .practical-target-list li.is-confirmed,
html[data-contrast="high"] .practical-target-list li.is-skipped { outline: 2px solid currentColor; }

@media (max-width: 1100px) {
    .sign-catalog-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .practical-review-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    .sign-catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .practical-intro, .practical-layout { grid-template-columns: 1fr; }
    .practical-review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ranking-type-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
    .sign-catalog-grid, .practical-review-list { grid-template-columns: 1fr; }
    .sign-card .lesson-content { min-height: 0; }
    .practice-category-bar { align-items: stretch; flex-direction: column; }
    .practice-category-controls { display: grid; grid-template-columns: 1fr 1fr; }
    .categorized-target-selector { grid-template-columns: repeat(5, minmax(42px, 1fr)); }
    .practical-toolbar { position: sticky; top: calc(var(--header-height) + 4px); z-index: 40; }
    .practical-target-panel { padding: 18px; }
    .ranking-type-tabs { grid-template-columns: 1fr; }
    html[data-text-size="extra-large"] .sign-catalog-grid,
    html[data-text-size="extra-large"] .practical-review-list,
    html[data-text-size="extra-large"] .ranking-type-tabs { grid-template-columns: 1fr; }
    html[data-text-size="extra-large"] .sign-card .lesson-content { min-height: 0; }
}
@media (forced-colors: active) {
    .prototype-warning, .camera-unavailable, .category-scope-note,
    .practical-target-list li, .practical-review-item { border: 2px solid CanvasText; }
    .practical-target-list li[aria-current="step"] { outline: 3px solid Highlight; }
}