/* Page layouts. Component styles live in components.css. */
[hidden] { display: none !important; }
.logo { white-space: nowrap; }
a { color: var(--brand); }
h1, h2, h3 { margin: 0; }
.h1 { font-size: 28px; line-height: 34px; font-weight: 700; letter-spacing: -0.01em; }
.h2 { font-size: 20px; line-height: 28px; font-weight: 700; }
.muted { color: var(--ink-muted); }
.small { font-size: 13px; line-height: 18px; }

.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: var(--space-6); padding: 0 var(--space-6); height: 60px; background: var(--surface-200); border-bottom: 1px solid var(--line); }
.logo { display: flex; align-items: center; gap: var(--space-2); font-weight: 800; font-size: 17px; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.logo-mark { display: grid; grid-template-columns: repeat(2, 9px); gap: 3px; }
.logo-mark i { width: 9px; height: 9px; border-radius: 2px; background: var(--brand); }
.logo-mark i:nth-child(2) { background: var(--status-review); border-radius: 50%; }
.logo-mark i:nth-child(3) { background: var(--accent); }
.nav { display: flex; gap: var(--space-1); flex: 1; }
.nav a { white-space: nowrap; padding: 8px 12px; border-radius: var(--radius-sm); color: var(--ink-muted); text-decoration: none; font-weight: 600; font-size: 14px; }
.nav a:hover, .nav a.active { color: var(--ink); background: var(--surface-300); }
.topbar-right { display: flex; align-items: center; gap: var(--space-3); }
.icon-btn { width: 36px; height: 36px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font-size: 16px; }

.container { max-width: 1180px; margin: 0 auto; padding: var(--space-8) var(--space-6); }
.page-head { display: flex; align-items: end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); flex-wrap: wrap; }
.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-side { grid-template-columns: 360px minmax(0, 1fr); align-items: start; }
.stack { display: grid; gap: var(--space-4); }
.row { display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.table-wrap { overflow-x: auto; }

.flash { padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: var(--space-4); font-weight: 600; font-size: 14px; }
.flash-ok { background: var(--success-tint); color: var(--status-answered); }
.flash-error { background: var(--danger-tint); color: var(--danger); }

/* test cards */
.test-card { display: grid; gap: var(--space-3); }
.test-card .h2 { font-size: 18px; }
.test-meta { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* auth */
.auth { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.auth-art { background: var(--ink); color: var(--surface-100); padding: 56px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.auth-art .display { font-size: 44px; line-height: 48px; font-weight: 800; letter-spacing: -0.02em; max-width: 460px; }
.auth-art p { color: color-mix(in srgb, var(--surface-100) 75%, transparent); max-width: 420px; }
.auth-tiles { position: absolute; right: -20px; top: 60px; display: grid; grid-template-columns: repeat(5, 44px); gap: 10px; opacity: .95; }
.auth-tiles i { height: 44px; border-radius: var(--radius-sm); background: color-mix(in srgb, var(--surface-100) 12%, transparent); }
.auth-tiles i.a { background: var(--status-answered); }
.auth-tiles i.r { background: var(--status-review); border-radius: 50%; }
.auth-tiles i.u { background: transparent; border: 2px solid var(--status-unanswered); }
.auth-tiles i.b { background: var(--brand); }
.auth-form { display: grid; place-items: center; padding: var(--space-8); }
.auth-form form { width: 100%; max-width: 380px; }

/* exam */
.exam-body { height: 100vh; display: grid; grid-template-rows: auto 1fr; overflow: hidden; }
.exam-main { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: var(--space-6); padding: var(--space-6); overflow: hidden; }
.exam-q { overflow-y: auto; padding-right: 4px; }
.exam-side { display: flex; flex-direction: column; gap: var(--space-4); overflow-y: auto; }
.candidate { display: flex; align-items: center; gap: var(--space-3); }
.avatar { width: 40px; height: 40px; border-radius: var(--radius-sm); background: var(--brand-tint); color: var(--brand-strong); display: grid; place-items: center; font-weight: 800; }
.option-figure { display: block; max-width: 100%; max-height: 140px; margin-top: 4px; background: #fff; border-radius: var(--radius-sm); }
.snapshot { max-width: 100%; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; display: block; margin-bottom: var(--space-3); }
.view-toggle { font-size: 13px; }
.palette-toggle { display: none; }
dialog { border: 0; border-radius: var(--radius-lg); padding: var(--space-6); background: var(--surface-200); color: var(--ink); box-shadow: var(--shadow-card); max-width: 440px; width: calc(100% - 32px); }
dialog::backdrop { background: rgba(5, 20, 15, .55); }
.kbd { font: 600 11px/1 var(--font-mono); padding: 3px 6px; border: 1px solid var(--line-strong); border-radius: 4px; }

/* result */
.score-hero { display: flex; align-items: center; gap: var(--space-8); flex-wrap: wrap; }
.score-big { font-size: 56px; line-height: 60px; font-weight: 800; letter-spacing: -0.03em; }
.bar { display: flex; height: 10px; border-radius: var(--radius-pill); overflow: hidden; background: var(--surface-300); }
.bar i { display: block; height: 100%; }
.bar .c { background: var(--status-answered); } .bar .w { background: var(--danger); }
.review-q { border-top: 1px solid var(--line); padding-top: var(--space-6); }
.explain { background: var(--surface-300); border-radius: var(--radius-md); padding: var(--space-4); font-size: 14px; }

/* admin */
.stat-card { padding: var(--space-4) var(--space-6); }
.thumb { max-height: 46px; border-radius: 4px; border: 1px solid var(--line); }
.stem-cell { max-width: 520px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
textarea.input { min-height: 90px; font-family: var(--font-sans); }
.edit-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-6); align-items: start; }
.pager { display: flex; gap: var(--space-2); margin-top: var(--space-4); }

/* ---------------------------------------------------------------- shared polish */
.topbar { background: color-mix(in srgb, var(--surface-200) 86%, transparent); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); }
.btn { transition: background .15s, border-color .15s, transform .15s, box-shadow .15s; }
.btn-primary { box-shadow: 0 6px 16px -8px color-mix(in srgb, var(--brand) 80%, transparent); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -10px color-mix(in srgb, var(--brand) 90%, transparent); }
.btn-sm { padding: 6px 12px; }
.btn-lg { padding: 13px 22px; font-size: 15px; border-radius: 12px; }
.btn-light { background: #fff; color: #0a5047; }
.btn-light:hover { transform: translateY(-1px); }
.user-chip { display: inline-flex; align-items: center; gap: var(--space-2); padding: 4px 10px 4px 4px; border: 1px solid var(--line); border-radius: var(--radius-pill); color: var(--ink); text-decoration: none; font-weight: 600; font-size: 14px; }
.user-chip:hover { border-color: var(--brand); }
.avatar-sm { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: var(--brand); color: var(--on-brand); font-weight: 800; font-size: 13px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--space-6); }
.eyebrow { display: inline-block; font: 600 12px/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--brand); text-decoration: none; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--status-answered); box-shadow: 0 0 0 0 color-mix(in srgb, var(--status-answered) 60%, transparent); animation: pulse 1.8s infinite; flex: none; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

/* ---------------------------------------------------------------- homepage */
.band { padding: 88px 0; scroll-margin-top: 70px; }
.band-tint { background: color-mix(in srgb, var(--brand) 5%, var(--surface-100)); border-block: 1px solid var(--line); }
.section-head { margin-bottom: var(--space-8); max-width: 720px; }
.section-head.center { text-align: center; margin-inline: auto; }
.section-head.wide { max-width: none; }
.section-head .h1 { margin: var(--space-2) 0; font-size: 34px; line-height: 40px; letter-spacing: -0.02em; }
.center-row { display: flex; justify-content: center; }

.hero-band { position: relative; overflow: hidden; padding: 72px 0 88px;
  background: radial-gradient(900px 420px at 85% 10%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 70%),
              radial-gradient(700px 360px at 0% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%), var(--surface-100); }
.hero-band::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px; mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 65%); -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 65%); }
.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: var(--space-2); padding: 6px 14px; border-radius: var(--radius-pill); background: var(--surface-200); border: 1px solid var(--line); font-size: 13px; font-weight: 600; box-shadow: var(--shadow-card); }
.display { font-size: 60px; line-height: 64px; font-weight: 800; letter-spacing: -0.035em; margin: var(--space-6) 0 var(--space-4); }
.display .hl { background: linear-gradient(100deg, var(--brand), color-mix(in srgb, var(--brand) 55%, var(--accent))); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18px; line-height: 30px; color: var(--ink-muted); max-width: 560px; margin: 0 0 var(--space-8); }
.hero-points { list-style: none; padding: 0; margin: var(--space-8) 0 0; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); font-size: 14px; color: var(--ink-muted); }
.hero-points li::before { content: "✓ "; color: var(--status-answered); font-weight: 800; }

.hero-visual { position: relative; display: grid; grid-template-columns: 1.15fr 1fr; gap: var(--space-4); }
.sample-tag { position: absolute; top: -28px; right: 0; font: 600 11px/16px var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-muted); }
.hv { background: var(--surface-200); border: 1px solid var(--line); border-radius: 18px; padding: var(--space-4); box-shadow: 0 18px 40px -24px rgba(16,35,30,.35), var(--shadow-card); animation: rise .7s cubic-bezier(.2,.7,.2,1) both; }
.hv:nth-child(3) { animation-delay: .08s; } .hv:nth-child(4) { animation-delay: .16s; } .hv:nth-child(5) { animation-delay: .24s; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } }
.hv-score { grid-row: span 2; }
.hv-head { display: flex; align-items: center; gap: var(--space-2); font-size: 13px; font-weight: 700; color: var(--ink-muted); margin-bottom: var(--space-3); }
.hv-ico { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-300); font-size: 15px; }
.hv-big { font: 800 34px/40px var(--font-sans); letter-spacing: -0.02em; }
.hv-big small { font-size: 15px; color: var(--ink-muted); font-weight: 600; }
.hv-up { color: var(--status-answered); font-weight: 700; font-size: 13px; margin-bottom: var(--space-3); }
.spark { width: 100%; height: 72px; display: block; }
.spark polyline { fill: none; stroke: var(--brand); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.spark polyline.area { fill: color-mix(in srgb, var(--brand) 14%, transparent); stroke: none; }
.hv-axis { display: flex; justify-content: space-between; font: 600 11px/14px var(--font-mono); color: var(--ink-muted); }
.hv-row { --c: var(--brand); display: grid; grid-template-columns: 74px 1fr 38px; align-items: center; gap: var(--space-2); font-size: 13px; margin-top: 6px; }
.hv-row b { text-align: right; font-family: var(--font-mono); font-size: 12px; }
.meter { height: 7px; border-radius: 99px; background: var(--surface-300); overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: inherit; background: var(--c); }
.mini-palette { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.mini-palette i { aspect-ratio: 1; border-radius: 5px; background: var(--status-notvisited); }
.mini-palette .m-a { background: var(--status-answered); }
.mini-palette .m-u { background: transparent; border: 2px solid var(--status-unanswered); }
.mini-palette .m-r { background: var(--status-review); border-radius: 50%; }
.hv-colleges { grid-column: span 2; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: var(--space-2) var(--space-4); }
.hv-colleges .hv-head { grid-column: span 2; margin: 0; }
.hv-colleges .hv-big { font-size: 24px; line-height: 30px; color: var(--accent); }

.ticker { overflow: hidden; background: var(--ink); color: var(--surface-100); padding: 14px 0; }
.ticker-track { display: flex; gap: 40px; width: max-content; animation: ticker 40s linear infinite; font-weight: 600; font-size: 14px; white-space: nowrap; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker span { opacity: .92; }
@keyframes ticker { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker-track, .hv, .pulse { animation: none; } }

.trust { display: grid; gap: var(--space-3); align-content: start; transition: transform .2s, box-shadow .2s, border-color .2s; }
.trust:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--brand) 50%, var(--line)); box-shadow: 0 20px 40px -26px rgba(16,35,30,.45); }
.trust .h2 { font-size: 18px; }
.trust p { margin: 0; }
.trust-ico { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; font-size: 24px; background: var(--brand-tint); }
.tag { justify-self: start; font: 700 11px/16px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; padding: 3px 10px; border-radius: var(--radius-pill); background: var(--brand-tint); color: var(--brand-strong); }
.tag-accent { background: var(--accent-tint); color: var(--accent); }
.tag-review { background: color-mix(in srgb, var(--status-review) 14%, var(--surface-200)); color: var(--status-review); }
.tag-green { background: var(--success-tint); color: var(--status-answered); }

.stats-band { background: linear-gradient(120deg, var(--brand-strong), var(--brand)); color: #fff; padding: 48px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-6); text-align: center; }
.stats-grid b { display: block; font: 800 44px/50px var(--font-sans); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stats-grid span { font-size: 14px; opacity: .85; }

.how { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); counter-reset: how; position: relative; }
.how li { position: relative; background: var(--surface-200); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow-card); }
.how li p { margin: var(--space-2) 0 0; }
.how-no { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--brand); color: var(--on-brand); font-weight: 800; font-size: 18px; margin-bottom: var(--space-4); box-shadow: 0 0 0 6px var(--brand-tint); }

.cta-band { padding: 0 0 88px; }
.cta { display: flex; justify-content: space-between; align-items: center; gap: var(--space-6); flex-wrap: wrap; padding: 44px 48px; border-radius: 24px; color: #fff;
  background: radial-gradient(500px 220px at 90% 0%, rgba(255,255,255,.18), transparent 70%), linear-gradient(120deg, var(--brand-strong), var(--brand)); }
.cta .h1 { color: #fff; }
.cta p { margin: var(--space-2) 0 0; opacity: .9; }
:root[data-theme="dark"] .cta, :root[data-theme="dark"] .stats-band { background: linear-gradient(120deg, #0b3d36, #0f6b5f); }

.site-footer { border-top: 1px solid var(--line); background: var(--surface-200); padding: 48px 0 24px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: var(--space-8); }
.footer-grid > div { display: grid; gap: var(--space-2); align-content: start; }
.footer-grid a:not(.logo) { color: var(--ink-muted); text-decoration: none; font-size: 14px; }
.footer-grid a:not(.logo):hover { color: var(--brand); }
.footer-title { font-weight: 700; font-size: 14px; }
.footer-base { margin-top: var(--space-8); padding-top: var(--space-4); border-top: 1px solid var(--line); }
.container + .site-footer { margin-top: 48px; }

/* ---------------------------------------------------------------- shared catalog pieces */
.sub-head { font: 700 13px/18px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-muted); margin: var(--space-8) 0 var(--space-4); }
.seg { display: inline-flex; flex-wrap: wrap; gap: var(--space-1); padding: 5px; border-radius: 14px; background: var(--surface-300); }
.seg button, .seg a { padding: 9px 18px; border: 0; border-radius: 10px; background: transparent; color: var(--ink-muted); font: 600 14px/20px var(--font-sans); cursor: pointer; text-decoration: none; }
.seg [aria-selected="true"], .seg [aria-current="page"] { background: var(--surface-200); color: var(--ink); box-shadow: var(--shadow-card); }
.seg-links { display: flex; width: fit-content; max-width: 100%; }
.seg-sub { margin: var(--space-3) 0 var(--space-6); background: transparent; padding: 0; }
.seg-sub a { border: 1px solid var(--line); }
.seg-sub a[aria-current="page"] { border-color: var(--brand); color: var(--brand-strong); background: var(--brand-tint); box-shadow: none; }
.package { display: flex; flex-direction: column; gap: var(--space-3); position: relative; transition: transform .2s, box-shadow .2s; }
.package:hover { transform: translateY(-4px); box-shadow: 0 22px 44px -28px rgba(16,35,30,.5); }
.package .h2 { font-size: 18px; line-height: 24px; }
.package-combo { border: 2px solid var(--brand); background: linear-gradient(180deg, var(--brand-tint), var(--surface-200) 120px); }
.package-badge { align-self: flex-start; background: var(--accent); color: var(--on-status); }
.package .btn { margin-top: auto; justify-content: center; }
.package .badge-brand { align-self: flex-start; }
.price strong { font-size: 32px; line-height: 38px; font-weight: 800; letter-spacing: -0.02em; }
.price s { color: var(--ink-muted); margin-left: var(--space-2); }
.schedule-line { padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); background: var(--surface-300); margin: 0; }
.ticks { list-style: none; padding: 0; margin: 0 0 var(--space-2); display: grid; gap: var(--space-2); font-size: 14px; line-height: 20px; }
.ticks li { padding-left: 24px; position: relative; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--status-answered); font-weight: 800; }
.series-test { display: grid; gap: var(--space-3); }
.series-test p { margin: 0; }
.subj-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-3); }
.subj { --c: var(--brand); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); border-left: 4px solid var(--c); border-radius: var(--radius-md); background: color-mix(in srgb, var(--c) 8%, var(--surface-200)); padding: var(--space-2) var(--space-3); }
.subj-head { display: flex; justify-content: space-between; font: 700 12px/16px var(--font-mono); letter-spacing: .04em; text-transform: uppercase; color: var(--c); }
.subj-topic { font-size: 14px; line-height: 20px; font-weight: 600; margin-top: 2px; }
.subj-chem { --c: var(--status-answered); }
.subj-bot { --c: var(--accent); }
.subj-zoo { --c: var(--status-review); }
.faq { max-width: 860px; }
.faq details { padding: var(--space-4) var(--space-6); margin-bottom: var(--space-3); }
.faq summary { font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: var(--space-4); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 22px; line-height: 22px; color: var(--brand); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: var(--space-3) 0 0; }
.steps-list { margin: 0; padding-left: 20px; display: grid; gap: var(--space-2); }
.track-head { display: grid; gap: var(--space-2); background: linear-gradient(120deg, var(--brand-tint), var(--surface-200) 60%); }
.track-head p { margin: 0; }

/* scorecard predictor */
.predictor-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: var(--space-8); scroll-margin-top: 80px; background: linear-gradient(135deg, var(--accent-tint), var(--surface-200) 55%); }
.predictor-summary { display: grid; gap: var(--space-3); align-content: start; }
.predictor-summary p { margin: 0; }
.predictor-figures { display: flex; gap: var(--space-8); flex-wrap: wrap; }
.predictor-figures > div { display: grid; }
.predictor-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--space-4); align-content: start; }
.predictor-form .field { margin-bottom: var(--space-3); }
.predictor-form .btn { grid-column: span 2; justify-content: center; }


/* admin: planner and paper editor */
.planner-table td { vertical-align: top; }
.subj-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--brand)); margin-right: 6px; }
.paper-chip { display: inline-block; margin: 0 6px 6px 0; padding: 3px 10px; border-radius: var(--radius-pill); border: 1px solid var(--line-strong); color: var(--ink); text-decoration: none; font-size: 13px; font-weight: 600; }
.paper-chip.is-live { background: var(--success-tint); border-color: var(--status-answered); color: var(--status-answered); }
.paper-chip:hover { border-color: var(--brand); }
.paper-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: var(--space-6); align-items: start; }
.paper-side { position: sticky; top: 76px; display: grid; gap: var(--space-4); }
.paper-section { display: grid; gap: var(--space-4); }
.ok-count { color: var(--status-answered); }
.autofill summary { cursor: pointer; font-weight: 600; font-size: 14px; color: var(--brand); }
.chapter-checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 4px 12px; max-height: 220px; overflow: auto; padding: 8px; border: 1px solid var(--line); border-radius: var(--radius-md); }
.pq { border-top: 1px solid var(--line); padding-top: var(--space-4); scroll-margin-top: 80px; }
.pq:target { background: color-mix(in srgb, var(--brand) 6%, transparent); border-radius: var(--radius-md); }
.pq-head { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-2); }
.pq-no { min-width: 32px; height: 32px; padding: 0 6px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--brand); color: var(--on-brand); font-weight: 800; font-size: 13px; }
.chapter-form .select { padding: 4px 8px; font-size: 13px; width: auto; max-width: 300px; }
.pq-stem, .cand-stem { font-size: 15px; line-height: 24px; }
.pq-fig, .cand-fig { max-width: 100%; max-height: 220px; background: #fff; border-radius: var(--radius-sm); margin: 6px 0; display: block; }
.cand-opts { margin: 8px 0 0; padding-left: 22px; font-size: 14px; line-height: 22px; }
.cand-opts li.is-key { color: var(--status-answered); font-weight: 700; }
.cand-opts li.is-key::after { content: "  ✓ key"; font-size: 12px; }
.pq-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; margin-top: var(--space-3); }
.pq-actions .spacer { flex: 1; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.checklist li::before { margin-right: 6px; font-weight: 800; }
.checklist .ok::before { content: "✓"; color: var(--status-answered); }
.checklist .warn::before { content: "!"; color: var(--accent); }
.checklist .bad::before { content: "✕"; color: var(--danger); }
.lock-note { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-6); background: var(--accent-tint); }
dialog.picker { max-width: 920px; width: calc(100% - 32px); max-height: calc(100vh - 48px); overflow: auto; }
.picker-filters { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; margin: var(--space-4) 0; }
.picker-filters .select, .picker-filters .input { width: auto; flex: 1 1 180px; padding: 6px 10px; font-size: 14px; }
.cands { display: grid; gap: var(--space-3); }
.cand { border: 1px solid var(--line); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); display: grid; gap: var(--space-2); }
.cand-head { display: flex; gap: 6px; flex-wrap: wrap; }

@media (max-width: 1100px) {
  .paper-layout { grid-template-columns: 1fr; }
  .paper-side { position: static; }
  .topbar { height: auto; min-height: 60px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  .hero { grid-template-columns: 1fr; }
  .hero-visual { max-width: 620px; margin-top: var(--space-6); }
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-side, .edit-grid, .how, .predictor-card { grid-template-columns: 1fr; }
  .display { font-size: 40px; line-height: 44px; }
  .wrap { padding: 0 var(--space-4); }
  .band { padding: 56px 0; }
  .hero-band { padding: 40px 0 56px; }
  .section-head .h1 { font-size: 26px; line-height: 32px; }
  .stats-grid, .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-grid b { font-size: 32px; line-height: 38px; }
  .cta { padding: 28px 20px; }
  .predictor-form { grid-template-columns: 1fr; }
  .predictor-form .btn { grid-column: auto; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .auth { grid-template-columns: 1fr; }
  .auth-art { padding: 32px 16px; min-height: 260px; }
  .auth-art .display { font-size: 32px; line-height: 36px; }
  .container { padding: var(--space-6) var(--space-4); }
  .topbar { padding: 0 var(--space-4); gap: var(--space-3); }
  .nav { overflow-x: auto; }
  .exam-main { grid-template-columns: 1fr; padding: var(--space-4); }
  .exam-side { position: fixed; inset: auto 0 0 0; max-height: 70vh; background: var(--surface-100); padding: var(--space-4); border-top: 1px solid var(--line); transform: translateY(100%); transition: transform .2s; z-index: 20; }
  .exam-side.open { transform: none; }
  .palette-toggle { display: inline-flex; }
}
@media (max-width: 600px) {
  .hero-visual { grid-template-columns: 1fr; }
  .hv-score { grid-row: auto; }
  .hv-colleges { grid-column: auto; }
  .display { font-size: 34px; line-height: 38px; }
  .seg { width: 100%; }
}