:root {
  color-scheme: dark;
  --bg: #06100d;
  --bg-elevated: #0a1713;
  --panel: rgba(14, 31, 26, 0.86);
  --panel-solid: #10231d;
  --panel-soft: rgba(255, 255, 255, 0.035);
  --line: rgba(187, 255, 225, 0.12);
  --line-strong: rgba(187, 255, 225, 0.22);
  --text: #f4fff8;
  --muted: #91a89d;
  --subtle: #6d8178;
  --mint: #71f7b6;
  --mint-ink: #062118;
  --lime: #c8ff63;
  --violet: #9f90ff;
  --amber: #ffc96b;
  --blue: #68b8ff;
  --rose: #ff87a8;
  --cyan: #65e9ec;
  --danger: #ff7686;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.2);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  font-family: Inter, "Segoe UI Variable", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f8f5;
  --bg-elevated: #ffffff;
  --panel: rgba(255, 255, 255, 0.91);
  --panel-solid: #ffffff;
  --panel-soft: rgba(10, 50, 35, 0.04);
  --line: rgba(14, 54, 40, 0.11);
  --line-strong: rgba(14, 54, 40, 0.2);
  --text: #10251e;
  --muted: #5f746a;
  --subtle: #75877f;
  --mint: #16bd75;
  --mint-ink: #ffffff;
  --lime: #7ebc13;
  --violet: #715ee8;
  --amber: #cb7b00;
  --blue: #247dc7;
  --rose: #d74270;
  --cyan: #008f96;
  --danger: #d83b4e;
  --shadow: 0 24px 70px rgba(22, 64, 48, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; min-height: 100vh; overflow-x: hidden; background: var(--bg); color: var(--text); }
body.modal-open { overflow: hidden; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
svg { width: 20px; height: 20px; fill: currentColor; }
[hidden] { display: none !important; }

.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: 1rem; transform: translateY(-160%); background: var(--lime); color: #10210f; padding: .72rem 1rem; border-radius: 10px; font-weight: 850; }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--mint); outline-offset: 3px; }

.ambient { position: fixed; z-index: -1; width: 42rem; height: 42rem; border-radius: 50%; filter: blur(130px); opacity: .1; pointer-events: none; }
.ambient-one { background: var(--mint); left: 18%; top: -30rem; }
.ambient-two { background: var(--violet); right: -24rem; bottom: -25rem; }
:root[data-theme="light"] .ambient { opacity: .06; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 252px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; z-index: 20; height: 100vh; border-right: 1px solid var(--line); padding: 28px 20px; display: flex; flex-direction: column; background: color-mix(in srgb, var(--bg) 84%, transparent); backdrop-filter: blur(24px); }
.brand { display: flex; align-items: center; gap: 12px; padding: 0 8px 30px; font-size: 1.12rem; font-weight: 850; letter-spacing: -.035em; }
.brand-mark, .dialog-mark { display: grid; place-items: center; width: 36px; height: 36px; flex: 0 0 auto; border-radius: 12px; background: linear-gradient(135deg, var(--lime), var(--mint)); color: #092117; box-shadow: 0 0 30px rgba(113, 247, 182, .17); }
.side-nav { display: grid; gap: 7px; }
.nav-link { min-height: 47px; display: flex; align-items: center; gap: 13px; padding: 0 14px; border-radius: 13px; color: var(--muted); font-size: .93rem; font-weight: 680; transition: color .2s ease, background .2s ease, transform .2s ease; }
.nav-link:hover { color: var(--text); background: var(--panel-soft); transform: translateX(2px); }
.nav-link.active { color: var(--mint-ink); background: var(--mint); box-shadow: 0 8px 30px rgba(113,247,182,.13); }
.nav-link svg { width: 19px; height: 19px; flex: 0 0 auto; }
.help-link { margin-top: 9px; border: 1px solid color-mix(in srgb, var(--mint) 28%, var(--line)); color: var(--mint); background: color-mix(in srgb, var(--mint) 7%, transparent); }
.help-link:hover { border-color: color-mix(in srgb, var(--mint) 58%, transparent); background: color-mix(in srgb, var(--mint) 12%, transparent); }
.side-foot { margin-top: auto; padding: 17px; border-radius: 17px; background: linear-gradient(145deg, rgba(113,247,182,.1), rgba(159,144,255,.07)); border: 1px solid var(--line); }
.side-goal-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: .75rem; }
.side-goal-head strong { color: var(--text); }
.mini-progress, .plan-progress { height: 5px; margin-top: 11px; border-radius: 99px; background: rgba(127, 153, 142, .16); overflow: hidden; }
.mini-progress span, .plan-progress span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--mint), var(--lime)); transition: width .55s cubic-bezier(.2,.8,.2,1); }
.side-plan-link { width: 100%; border: 0; padding: 12px 0 0; text-align: left; color: var(--mint); background: transparent; font-size: .75rem; font-weight: 750; cursor: pointer; }

.main-content { min-width: 0; width: 100%; max-width: 1540px; margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 15; height: 86px; display: flex; align-items: center; gap: 12px; padding: 0 clamp(24px, 4vw, 64px); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(22px); }
.mobile-brand { display: none; }
.search-box { height: 44px; max-width: 590px; flex: 1; display: flex; align-items: center; gap: 10px; padding: 0 13px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-soft); color: var(--muted); text-align: left; cursor: pointer; }
.search-box:hover { border-color: var(--line-strong); }
.search-box span { flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
kbd, .key-button { padding: 3px 7px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel-soft); color: var(--subtle); font-size: .75rem; box-shadow: inset 0 -1px rgba(127,153,142,.12); }
.icon-button { width: 44px; height: 44px; flex: 0 0 auto; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-soft); cursor: pointer; transition: transform .2s ease, border-color .2s ease; }
.icon-button:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.profile-button { max-width: 180px; display: flex; align-items: center; gap: 9px; min-height: 44px; padding: 4px 11px 4px 5px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel-soft); cursor: pointer; }
.avatar { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 11px; color: #0c1e15; background: linear-gradient(135deg, var(--lime), var(--mint)); font-size: .8rem; font-weight: 900; }
.avatar.large { width: 58px; height: 58px; border-radius: 18px; margin-bottom: 14px; font-size: 1.2rem; }
.profile-button > span:nth-child(2) { max-width: 100px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .83rem; font-weight: 780; }
.profile-chevron { color: var(--subtle); }

.view { min-height: calc(100vh - 86px); padding: 50px clamp(24px, 4vw, 64px) 90px; }
.view.active .reveal { animation: rise .55s cubic-bezier(.2,.8,.2,1) both; }
.view.active .delay-1 { animation-delay: .07s; }
.view.active .delay-2 { animation-delay: .14s; }
.eyebrow, .card-kicker { color: var(--mint); font-size: .75rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 8px; }
.eyebrow > span { width: 22px; height: 1px; flex: 0 0 auto; background: var(--mint); }
.welcome-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 11px 0 34px; }
.welcome-row h1, .page-heading h1 { margin: 0; font-size: clamp(2rem, 4.1vw, 3.85rem); line-height: 1.04; letter-spacing: -.056em; }
.welcome-row h1 span { color: var(--lime); }
.welcome-row p, .page-heading p { max-width: 720px; margin: 12px 0 0; color: var(--muted); font-size: 1rem; line-height: 1.6; }
.streak-pill { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border: 1px solid rgba(200,255,99,.2); border-radius: 999px; background: rgba(200,255,99,.07); color: color-mix(in srgb, var(--lime) 84%, var(--text)); font-size: .78rem; white-space: nowrap; }

.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.72fr) minmax(260px, .76fr); gap: 18px; }
.focus-card, .stat-card, .topic-preview-card, .plan-card, .official-card, .library-card, .test-mode, .resume-test, .exam-note, .analytics-card, .history-card, .bookmark-card, .question-stage, .question-map { border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow); }
.focus-card { position: relative; min-height: 288px; display: flex; align-items: center; justify-content: space-between; overflow: hidden; padding: clamp(26px, 4vw, 44px); border-radius: var(--radius-xl); background: linear-gradient(125deg, rgba(15,45,35,.96), rgba(19,27,43,.92)); }
:root[data-theme="light"] .focus-card { background: linear-gradient(125deg, #e2faed, #eef0ff); }
.focus-card::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.027) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.027) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to right, transparent, #000); }
:root[data-theme="light"] .focus-card::before { background-image: linear-gradient(rgba(8,60,42,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(8,60,42,.04) 1px, transparent 1px); }
.focus-copy { position: relative; z-index: 1; max-width: 470px; }
.focus-copy h2 { margin: 10px 0 9px; font-size: clamp(1.55rem, 3vw, 2.35rem); letter-spacing: -.04em; }
.focus-copy p { margin: 0 0 25px; color: var(--muted); }
.primary-button, .secondary-button, .ghost-button, .danger-button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; border-radius: 13px; padding: 0 18px; font-weight: 820; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease; }
.primary-button { border: 0; color: #0a1d13; background: var(--lime); box-shadow: 0 12px 30px rgba(200,255,99,.12); }
:root[data-theme="light"] .primary-button { color: #fff; background: #119b60; }
.primary-button:hover, .secondary-button:hover { transform: translateY(-2px); }
.primary-button:hover { box-shadow: 0 14px 38px rgba(200,255,99,.2); }
.primary-button:disabled, .secondary-button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.secondary-button { border: 1px solid var(--line-strong); color: var(--text); background: var(--panel-soft); }
.secondary-button:hover { border-color: var(--mint); }
.ghost-button { border: 0; color: var(--muted); background: transparent; }
.ghost-button:hover { color: var(--text); background: var(--panel-soft); }
.danger-button { width: 100%; margin-top: 12px; border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent); color: var(--danger); background: color-mix(in srgb, var(--danger) 7%, transparent); }
.compact { min-height: 38px; padding-inline: 11px; font-size: .78rem; }
.full { width: 100%; }
.text-button { border: 0; padding: 5px 0; color: var(--muted); background: transparent; font-weight: 700; cursor: pointer; }
.text-button:hover { color: var(--mint); }

.formula-orbit { position: relative; width: 210px; height: 210px; flex: 0 0 auto; display: grid; place-items: center; }
.score-ring { --score: 0%; width: 126px; height: 126px; border-radius: 50%; display: grid; place-content: center; text-align: center; background: radial-gradient(circle at center, var(--panel-solid) 59%, transparent 61%), conic-gradient(var(--mint) var(--score), rgba(127,153,142,.16) 0); box-shadow: 0 0 50px rgba(113,247,182,.12); transition: background .5s ease; }
.score-ring strong { font-size: 1.7rem; letter-spacing: -.05em; }
.score-ring small { color: var(--muted); }
.orbit { position: absolute; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel-solid); color: var(--mint); font-weight: 850; animation: float 4s ease-in-out infinite; }
.orbit-a { left: 2px; top: 40px; }
.orbit-b { right: 3px; top: 14px; animation-delay: -1.4s; color: var(--violet); }
.orbit-c { right: 8px; bottom: 17px; animation-delay: -2.6s; color: var(--lime); }
.stat-card { min-height: 288px; padding: 26px; border-radius: var(--radius-xl); }
.stat-head { display: flex; justify-content: space-between; gap: 14px; font-size: .88rem; }
.stat-head span { color: var(--muted); }
.stat-head strong { color: var(--lime); }
.bars { height: 160px; display: flex; align-items: end; justify-content: space-between; gap: 8px; padding-top: 24px; }
.bars i { width: 100%; max-width: 25px; min-height: 12px; border-radius: 7px 7px 3px 3px; background: rgba(127,153,142,.17); transform-origin: bottom; animation: grow-bar .65s cubic-bezier(.2,.8,.2,1) both; }
.bars i.current { background: linear-gradient(to top, var(--mint), var(--lime)); box-shadow: 0 0 22px rgba(113,247,182,.17); }
.days { display: flex; justify-content: space-between; color: var(--subtle); font-size: .75rem; padding-top: 9px; }
.stats-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 16px; }
.stats-strip article { display: flex; align-items: center; gap: 12px; min-height: 82px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-soft); }
.stat-icon { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 auto; border-radius: 13px; font-weight: 900; }
.stat-icon.mint { color: var(--mint); background: rgba(113,247,182,.09); }
.stat-icon.violet { color: var(--violet); background: rgba(159,144,255,.1); }
.stat-icon.amber { color: var(--amber); background: rgba(255,201,107,.1); }
.stat-icon.blue { color: var(--blue); background: rgba(104,184,255,.1); }
.stats-strip strong { display: block; font-size: 1.2rem; }
.stats-strip small { color: var(--muted); font-size: .75rem; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin: 42px 0 15px; }
.section-heading.compact { margin: 0 0 14px; }
.section-heading h2 { margin: 7px 0 0; font-size: 1.55rem; letter-spacing: -.04em; }
.topic-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.topic-preview-card { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; padding: 17px; border-radius: 17px; cursor: pointer; overflow: hidden; transition: transform .2s ease, border-color .2s ease; }
.topic-preview-card:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.topic-preview-card .topic-icon, .library-card .topic-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; font-weight: 900; background: rgba(113,247,182,.1); color: var(--mint); }
.topic-icon.violet { color: var(--violet); background: rgba(159,144,255,.1); }
.topic-icon.amber { color: var(--amber); background: rgba(255,201,107,.1); }
.topic-icon.blue { color: var(--blue); background: rgba(104,184,255,.1); }
.topic-icon.rose { color: var(--rose); background: rgba(255,135,168,.1); }
.topic-icon.cyan { color: var(--cyan); background: rgba(101,233,236,.1); }
.topic-icon.lime { color: var(--lime); background: rgba(200,255,99,.1); }
.topic-preview-card h3 { margin: 0 0 4px; font-size: .95rem; }
.topic-preview-card p { margin: 0; color: var(--muted); font-size: .75rem; }
.topic-preview-card > strong { color: var(--lime); font-size: .83rem; }
.lower-dashboard { display: grid; grid-template-columns: 1.08fr .92fr; gap: 16px; margin-top: 18px; }
.plan-card, .official-card { border-radius: var(--radius-xl); padding: 26px; }
.plan-progress-label { color: var(--lime); font-weight: 850; }
.daily-plan { display: grid; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.plan-task { display: flex; align-items: center; gap: 11px; min-height: 42px; padding: 8px 10px; border-radius: 12px; color: var(--muted); background: var(--panel-soft); }
.plan-task button { width: 24px; height: 24px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--line-strong); border-radius: 8px; color: transparent; background: transparent; cursor: pointer; }
.plan-task.done { color: var(--subtle); text-decoration: line-through; }
.plan-task.done button { border-color: var(--mint); color: var(--mint-ink); background: var(--mint); }
.official-card { position: relative; display: flex; align-items: flex-start; gap: 18px; overflow: hidden; background: linear-gradient(145deg, rgba(159,144,255,.1), rgba(104,184,255,.05)); }
.official-icon { display: grid; place-items: center; width: 62px; height: 62px; flex: 0 0 auto; border-radius: 18px; color: var(--violet); background: rgba(159,144,255,.12); font-size: 1.25rem; font-weight: 900; }
.official-card h2 { margin: 8px 0; font-size: 1.35rem; letter-spacing: -.03em; }
.official-card p { margin: 0 0 17px; color: var(--muted); font-size: .84rem; line-height: 1.6; }

.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 32px; }
.page-heading .eyebrow { margin-bottom: 11px; }
.catalog-stat { display: grid; place-items: center; min-width: 120px; min-height: 98px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-soft); text-align: center; }
.catalog-stat strong { font-size: 2rem; color: var(--lime); }
.catalog-stat span { color: var(--muted); font-size: .75rem; }
.library-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.filter-chips, .bookmark-tabs { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.filter-chips::-webkit-scrollbar { display: none; }
.filter-chip { min-height: 39px; flex: 0 0 auto; padding: 0 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--panel-soft); font-size: .78rem; font-weight: 750; cursor: pointer; }
.filter-chip:hover, .filter-chip.active { color: var(--mint-ink); border-color: var(--mint); background: var(--mint); }
.filter-chip span { margin-left: 5px; opacity: .8; }
.inline-search { min-width: min(320px, 100%); height: 42px; display: flex; align-items: center; gap: 9px; padding: 0 12px; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-soft); }
.inline-search:focus-within { border-color: var(--mint); box-shadow: 0 0 0 3px rgba(113,247,182,.08); }
.inline-search svg { color: var(--muted); }
.inline-search input { width: 100%; min-width: 0; border: 0; outline: 0; color: var(--text); background: transparent; }
.library-summary { display: flex; gap: 18px; margin: 0 0 15px; color: var(--muted); font-size: .75rem; }
.library-summary span { display: flex; align-items: center; gap: 5px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; }
.status-dot.done { background: var(--mint); }
.status-dot.saved { background: var(--violet); }
.library-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.library-card { position: relative; min-height: 245px; display: flex; flex-direction: column; padding: 20px; border-radius: var(--radius-lg); overflow: hidden; transition: transform .2s ease, border-color .2s ease; }
.library-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.library-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.bookmark-button { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); background: var(--panel-soft); cursor: pointer; }
.bookmark-button.saved { color: var(--violet); border-color: rgba(159,144,255,.4); background: rgba(159,144,255,.08); }
.bookmark-button svg { width: 18px; height: 18px; }
.library-card h2 { margin: 18px 0 7px; font-size: 1.15rem; letter-spacing: -.025em; }
.library-card p { margin: 0; color: var(--muted); font-size: .81rem; line-height: 1.55; }
.library-card-foot { margin-top: auto; padding-top: 18px; }
.card-meta { display: flex; justify-content: space-between; gap: 8px; color: var(--muted); font-size: .75rem; }
.card-meta strong { color: var(--text); }
.progress-line { height: 4px; margin-top: 9px; overflow: hidden; border-radius: 99px; background: rgba(127,153,142,.15); }
.progress-line span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--mint), var(--lime)); }
.library-card-open { position: absolute; inset: 0; border: 0; border-radius: inherit; background: transparent; cursor: pointer; }
.library-card-open:focus-visible { outline: 3px solid var(--mint); outline-offset: -4px; }
.library-card .bookmark-button { position: relative; z-index: 2; }
.empty-state { min-height: 320px; display: grid; place-items: center; align-content: center; text-align: center; color: var(--muted); }
.empty-state > span { font-size: 2.2rem; }
.empty-state h2 { margin: 12px 0 3px; color: var(--text); }
.empty-state p { margin: 0 0 18px; }

.test-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.test-mode { position: relative; min-height: 390px; display: flex; flex-direction: column; padding: 25px; border-radius: var(--radius-xl); overflow: hidden; }
.test-mode.featured { border-color: rgba(113,247,182,.3); background: linear-gradient(150deg, rgba(113,247,182,.1), var(--panel)); }
.mode-badge { position: absolute; right: 16px; top: 16px; padding: 5px 8px; border-radius: 7px; color: var(--mint-ink); background: var(--mint); font-size: .75rem; font-weight: 900; letter-spacing: .1em; }
.mode-icon { display: grid; place-items: center; width: 64px; height: 64px; border-radius: 19px; color: var(--mint); background: rgba(113,247,182,.09); font-size: 1.35rem; font-weight: 900; }
.mode-icon.violet { color: var(--violet); background: rgba(159,144,255,.1); }
.mode-icon.amber { color: var(--amber); background: rgba(255,201,107,.1); }
.test-mode h2 { margin: 20px 0 8px; font-size: 1.35rem; letter-spacing: -.035em; }
.test-mode > p { margin: 0; color: var(--muted); font-size: .83rem; line-height: 1.6; }
.test-mode ul { display: grid; gap: 9px; margin: 20px 0 24px; padding: 0; list-style: none; color: var(--muted); font-size: .78rem; }
.test-mode li::before { content: "✓"; margin-right: 8px; color: var(--mint); font-weight: 900; }
.test-mode .full { margin-top: auto; }
.resume-test { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 25px; border-radius: var(--radius-lg); }
.resume-test h2 { margin: 7px 0 4px; font-size: 1.2rem; }
.resume-test p { margin: 0; color: var(--muted); font-size: .8rem; }
.resume-actions { display: flex; gap: 8px; }
.exam-note { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; margin-top: 16px; padding: 20px 22px; border-radius: var(--radius-lg); box-shadow: none; }
.note-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; color: var(--blue); background: rgba(104,184,255,.1); font-weight: 900; }
.exam-note h2 { margin: 0 0 4px; font-size: .95rem; }
.exam-note p { margin: 0; color: var(--muted); font-size: .76rem; line-height: 1.5; }

.test-runner { animation: rise .45s ease both; }
.runner-header { min-height: 58px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 14px; }
.runner-title { display: grid; text-align: center; font-weight: 820; }
.runner-title small { margin-top: 2px; color: var(--muted); font-weight: 600; }
.timer { justify-self: end; min-width: 108px; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel-soft); }
.timer.warning { color: var(--amber); border-color: rgba(255,201,107,.35); animation: pulse 1.2s ease-in-out infinite; }
.timer.urgent { color: var(--danger); border-color: rgba(255,118,134,.4); }
.runner-progress { height: 4px; margin: 12px 0 22px; overflow: hidden; border-radius: 99px; background: rgba(127,153,142,.15); }
.runner-progress span { display: block; width: 10%; height: 100%; background: linear-gradient(90deg, var(--mint), var(--lime)); transition: width .3s ease; }
.runner-layout { display: grid; grid-template-columns: 245px minmax(0, 1fr); gap: 18px; }
.question-map, .question-stage { border-radius: var(--radius-xl); }
.question-map { align-self: start; position: sticky; top: 108px; padding: 20px; }
.question-map-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.question-map-head > span, .map-legend { color: var(--muted); font-size: .75rem; }
.question-map-head i, .map-legend i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }
.question-map-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; margin-top: 18px; }
.question-map-grid button { position: relative; aspect-ratio: 1; min-width: 0; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); background: var(--panel-soft); font-size: .75rem; font-weight: 780; cursor: pointer; }
.question-map-grid button.answered { color: var(--mint-ink); border-color: var(--mint); background: var(--mint); }
.question-map-grid button.current { outline: 2px solid var(--violet); outline-offset: 2px; }
.question-map-grid button.flagged::after { content: ""; position: absolute; width: 5px; height: 5px; margin: 2px 0 0 -2px; border-radius: 50%; background: var(--amber); }
.map-legend { display: flex; gap: 12px; margin-top: 17px; }
.map-legend i.current { background: var(--violet); }
.map-legend i.flagged { background: var(--amber); }
.question-stage { min-height: 540px; padding: clamp(24px, 4vw, 46px); }
.question-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--mint); font-size: .75rem; font-weight: 800; }
.difficulty-badge { padding: 5px 8px; border: 1px solid rgba(159,144,255,.25); border-radius: 999px; color: var(--violet); background: rgba(159,144,255,.07); }
.question-stage fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.question-stage legend { display: block; width: 100%; margin: 24px 0; font-size: clamp(1.3rem, 2.6vw, 2rem); line-height: 1.42; letter-spacing: -.025em; font-weight: 780; }
.answer-options { display: grid; gap: 10px; }
.answer-option { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; min-height: 60px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 15px; background: var(--panel-soft); cursor: pointer; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.answer-option:hover { transform: translateX(3px); border-color: var(--line-strong); }
.answer-option:has(input:checked) { border-color: var(--mint); background: rgba(113,247,182,.07); }
.answer-option input { position: absolute; opacity: 0; }
.answer-letter { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 11px; color: var(--muted); background: var(--panel-soft); font-size: .76rem; font-weight: 850; }
.answer-option:has(input:checked) .answer-letter { border-color: var(--mint); color: var(--mint-ink); background: var(--mint); }
.answer-text { line-height: 1.45; }
.answer-check { color: transparent; }
.answer-option:has(input:checked) .answer-check { color: var(--mint); }
.question-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 28px; }
.question-actions > div { display: flex; gap: 8px; }
.ghost-button.flag-active { color: var(--amber); background: rgba(255,201,107,.07); }

.test-result { animation: rise .5s ease both; }
.result-hero { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 26px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: linear-gradient(135deg, rgba(113,247,182,.1), rgba(159,144,255,.06)); overflow: hidden; }
.result-score { --score: 0%; width: 138px; height: 138px; display: grid; place-content: center; border-radius: 50%; text-align: center; background: radial-gradient(circle at center, var(--panel-solid) 59%, transparent 61%), conic-gradient(var(--mint) var(--score), rgba(127,153,142,.16) 0); }
.result-score strong { font-size: 2rem; }
.result-score span { color: var(--muted); font-size: .75rem; }
.result-copy .card-kicker { display: block; margin-bottom: 8px; }
.result-copy h1 { margin: 0 0 8px; font-size: clamp(1.7rem, 3.5vw, 2.8rem); letter-spacing: -.05em; }
.result-copy p { margin: 0; color: var(--muted); line-height: 1.6; }
.result-actions { display: grid; gap: 8px; }
.result-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 16px 0 28px; }
.result-stats article { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-soft); }
.result-stats strong { display: block; font-size: 1.4rem; }
.result-stats span { color: var(--muted); font-size: .75rem; }
.review-heading { display: flex; align-items: end; justify-content: space-between; gap: 14px; margin: 26px 0 14px; }
.review-heading h2 { margin: 0; font-size: 1.45rem; }
.review-heading span { color: var(--muted); font-size: .75rem; }
.review-list { display: grid; gap: 10px; }
.review-item { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel); overflow: hidden; }
.review-item summary { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; min-height: 64px; padding: 12px 16px; cursor: pointer; }
.review-status { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; font-weight: 900; }
.review-status.correct { color: var(--mint); background: rgba(113,247,182,.09); }
.review-status.wrong { color: var(--danger); background: rgba(255,118,134,.09); }
.review-status.empty { color: var(--amber); background: rgba(255,201,107,.09); }
.review-item summary strong { display: block; margin-bottom: 3px; font-size: .87rem; }
.review-item summary small { color: var(--muted); }
.review-item summary::marker { color: transparent; }
.review-detail { padding: 0 18px 18px 62px; color: var(--muted); font-size: .82rem; line-height: 1.65; }
.review-detail p { margin: 5px 0; }
.review-detail b { color: var(--text); }
.review-detail .correct-answer { color: var(--mint); }

.results-overview { display: grid; grid-template-columns: 1.1fr .9fr; gap: 16px; }
.analytics-card, .history-card { padding: 25px; border-radius: var(--radius-xl); }
.analytics-card h2, .history-card h2 { margin: 0 0 20px; font-size: 1.2rem; }
.big-metric { display: flex; align-items: end; gap: 10px; margin-bottom: 22px; }
.big-metric strong { font-size: 3.2rem; line-height: .9; letter-spacing: -.06em; }
.big-metric span { color: var(--muted); }
.category-bars { display: grid; gap: 13px; }
.category-row { display: grid; grid-template-columns: 120px 1fr 42px; align-items: center; gap: 10px; font-size: .75rem; }
.category-row > span { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.category-row .progress-line { margin: 0; height: 7px; }
.history-list { display: grid; gap: 9px; }
.history-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 12px; border-radius: 14px; background: var(--panel-soft); }
.history-score { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 13px; color: var(--mint); background: rgba(113,247,182,.08); font-weight: 900; }
.history-item h3 { margin: 0 0 3px; font-size: .86rem; }
.history-item small, .history-item > span { color: var(--muted); font-size: .75rem; }
.empty-results { min-height: 390px; display: grid; place-items: center; align-content: center; text-align: center; border: 1px dashed var(--line-strong); border-radius: var(--radius-xl); }
.empty-results .empty-symbol { display: grid; place-items: center; width: 70px; height: 70px; border-radius: 22px; color: var(--mint); background: rgba(113,247,182,.08); font-size: 1.7rem; }
.empty-results h2 { margin: 18px 0 6px; }
.empty-results p { max-width: 420px; margin: 0 0 18px; color: var(--muted); }

.bookmark-tabs { margin-bottom: 18px; }
.bookmarks-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.bookmark-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; padding: 17px; border-radius: var(--radius-lg); }
.bookmark-card h2 { margin: 0 0 5px; font-size: 1rem; }
.bookmark-card p { margin: 0; color: var(--muted); font-size: .75rem; line-height: 1.45; }
.bookmark-card .topic-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; background: rgba(113,247,182,.09); color: var(--mint); font-weight: 900; }

.mobile-nav, .telegram-help { display: none; }

.modal { width: min(560px, calc(100% - 30px)); max-height: min(86vh, 820px); margin: auto; padding: 0; border: 1px solid var(--line-strong); border-radius: 26px; color: var(--text); background: var(--panel-solid); box-shadow: 0 35px 120px rgba(0,0,0,.55); overflow: auto; }
.modal::backdrop { background: rgba(1,7,5,.73); backdrop-filter: blur(9px); }
.modal[open] { animation: dialog-in .28s cubic-bezier(.2,.8,.2,1) both; }
.modal-close { position: absolute; z-index: 2; right: 17px; top: 17px; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); background: var(--panel-soft); font-size: 1.2rem; cursor: pointer; }
.name-dialog form, .confirm-dialog form { display: grid; padding: 34px; }
.dialog-mark { width: 48px; height: 48px; margin-bottom: 22px; font-size: 1.35rem; }
.dialog-mark.official { font-size: .8rem; letter-spacing: .03em; }
.modal h2 { margin: 8px 0; font-size: clamp(1.6rem, 4vw, 2.15rem); letter-spacing: -.045em; }
.name-dialog p:not(.card-kicker), .confirm-dialog p { margin: 0 0 24px; color: var(--muted); line-height: 1.6; }
.modal label { margin-bottom: 8px; font-size: .8rem; font-weight: 750; }
.modal input { height: 50px; border: 1px solid var(--line); border-radius: 13px; outline: 0; padding: 0 14px; background: var(--panel-soft); color: var(--text); font-size: 1rem; }
.modal input:focus { border-color: var(--mint); box-shadow: 0 0 0 3px rgba(113,247,182,.08); }
.name-dialog .primary-button { margin-top: 9px; }
.name-dialog form > small { margin-top: 13px; color: var(--subtle); text-align: center; }
.field-error { min-height: 20px; padding-top: 4px; color: var(--danger); font-size: .75rem; }
.search-dialog { width: min(690px, calc(100% - 30px)); overflow: hidden; }
.search-dialog-head { height: 66px; display: flex; align-items: center; gap: 11px; padding: 0 17px; border-bottom: 1px solid var(--line); }
.search-dialog-head svg { color: var(--muted); }
.search-dialog-head input { height: auto; flex: 1; padding: 0; border: 0; border-radius: 0; background: transparent; }
.key-button { cursor: pointer; }
.search-results { min-height: 220px; max-height: 510px; overflow: auto; padding: 12px; }
.search-dialog footer { min-height: 45px; display: flex; align-items: center; gap: 18px; padding: 0 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: .75rem; }
.search-group-title { padding: 12px 9px 7px; color: var(--subtle); font-size: .75rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.search-result-item { width: 100%; min-height: 55px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 8px 10px; border: 0; border-radius: 12px; color: var(--text); background: transparent; text-align: left; cursor: pointer; }
.search-result-item:hover, .search-result-item.active { background: var(--panel-soft); }
.search-result-icon { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 10px; color: var(--mint); background: rgba(113,247,182,.08); font-weight: 850; }
.search-result-item strong { display: block; margin-bottom: 2px; font-size: .83rem; }
.search-result-item small { color: var(--muted); }
.search-result-item > span:last-child { color: var(--subtle); }
.search-hint { min-height: 240px; display: grid; place-items: center; align-content: center; color: var(--muted); text-align: center; }
.search-hint > span { font-size: 1.7rem; }
.search-hint p { max-width: 330px; margin: 10px 0 0; line-height: 1.55; }
.topic-dialog { width: min(720px, calc(100% - 30px)); }
.topic-dialog-content { padding: 36px; }
.topic-hero { display: flex; align-items: center; gap: 16px; padding-right: 45px; }
.topic-hero .topic-icon { width: 58px; height: 58px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 18px; color: var(--mint); background: rgba(113,247,182,.09); font-size: 1.15rem; font-weight: 900; }
.topic-hero h2 { margin: 0 0 5px; }
.topic-hero p { margin: 0; color: var(--muted); }
.lesson-block { margin-top: 22px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-soft); }
.lesson-block h3 { margin: 0 0 10px; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; }
.lesson-block p { margin: 0; color: var(--muted); line-height: 1.7; }
.formula-box { overflow-x: auto; color: var(--lime); font-family: Cambria, Georgia, serif; font-size: 1.15rem; white-space: nowrap; }
.module-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 10px 0 0; padding: 0; list-style: none; }
.module-list li { display: flex; gap: 8px; padding: 8px 9px; border-radius: 10px; color: var(--muted); background: var(--panel-soft); font-size: .75rem; }
.module-list li:has(button) { padding: 0; }
.module-list li > button { width: 100%; min-height: 38px; display: flex; align-items: center; gap: 8px; padding: 8px 9px; border: 0; border-radius: inherit; color: inherit; background: transparent; text-align: left; cursor: pointer; }
.module-list li > button span { color: var(--mint); font-weight: 900; }
.module-list li.completed { color: var(--text); background: rgba(113,247,182,.08); }
.topic-dialog-actions { display: flex; justify-content: space-between; gap: 9px; margin-top: 20px; }
.confirm-dialog { width: min(440px, calc(100% - 30px)); text-align: center; }
.confirm-icon { width: 54px; height: 54px; display: grid; place-items: center; margin: 0 auto 12px; border-radius: 17px; color: var(--amber); background: rgba(255,201,107,.09); font-size: 1.4rem; font-weight: 900; }
.dialog-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.official-dialog { padding: 34px; }
.official-dialog > p:not(.card-kicker):not(.source-note) { color: var(--muted); line-height: 1.65; }
.official-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 20px 0; }
.official-facts span { padding: 13px 8px; border: 1px solid var(--line); border-radius: 13px; color: var(--muted); text-align: center; font-size: .75rem; }
.official-facts strong { display: block; color: var(--text); font-size: 1.1rem; }
.source-list { display: grid; gap: 7px; margin-top: 17px; }
.source-list a { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 12px 13px; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-soft); }
.source-list a:hover { border-color: var(--mint); }
.source-list a span { font-size: .84rem; font-weight: 750; }
.source-list a small { color: var(--muted); }
.source-list a b { grid-area: 1 / 2 / 3; align-self: center; color: var(--mint); }
.source-note { margin: 14px 0 0; color: var(--subtle); font-size: .75rem; line-height: 1.5; }
.profile-dialog { padding: 34px; }
.profile-dialog form { display: grid; margin-top: 20px; }
.profile-dialog .primary-button { margin-top: 10px; }
.toast-region { position: fixed; z-index: 1100; right: 18px; bottom: 18px; display: grid; gap: 8px; pointer-events: none; }
.toast { max-width: 340px; display: flex; align-items: center; gap: 10px; padding: 13px 15px; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--panel-solid); box-shadow: var(--shadow); color: var(--text); font-size: .78rem; animation: toast-in .3s ease both; }
.toast::before { content: "✓"; display: grid; place-items: center; width: 25px; height: 25px; border-radius: 8px; color: var(--mint-ink); background: var(--mint); font-weight: 900; }
.toast.warning::before { content: "!"; color: #211501; background: var(--amber); }

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%,100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-9px) rotate(2deg); } }
@keyframes grow-bar { from { transform: scaleY(.08); } to { transform: scaleY(1); } }
@keyframes dialog-in { from { opacity: 0; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(255,201,107,0); } 50% { box-shadow: 0 0 0 5px rgba(255,201,107,.08); } }

@media (max-width: 1120px) {
  .library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .test-modes { grid-template-columns: 1fr 1fr; }
  .test-mode:last-child { grid-column: 1 / -1; min-height: 320px; }
  .runner-layout { grid-template-columns: 205px minmax(0, 1fr); }
}

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 78px minmax(0, 1fr); }
  .sidebar { padding-inline: 14px; }
  .brand { justify-content: center; padding-inline: 0; }
  .brand > span:last-child, .nav-link > span:last-child, .side-foot { display: none; }
  .nav-link { justify-content: center; padding: 0; }
  .dashboard-grid, .lower-dashboard, .results-overview { grid-template-columns: 1fr; }
  .stat-card { min-height: 240px; }
  .runner-layout { grid-template-columns: 1fr; }
  .question-map { position: static; }
  .question-map-grid { grid-template-columns: repeat(10, 1fr); }
  .result-hero { grid-template-columns: auto 1fr; }
  .result-actions { grid-column: 1 / -1; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { display: none; }
  .main-content { padding-bottom: 70px; }
  .topbar { height: 68px; padding: 0 14px; gap: 9px; }
  .mobile-brand { width: 42px; height: 42px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 13px; color: #0b2117; background: linear-gradient(135deg, var(--lime), var(--mint)); font-weight: 900; }
  .search-box { height: 42px; padding-inline: 11px; }
  .search-box kbd { display: none; }
  .search-box span { font-size: .78rem; }
  .icon-button { display: none; }
  .profile-button { border: 0; background: transparent; padding: 0; }
  .profile-button > span:not(.avatar) { display: none; }
  .view { min-height: calc(100vh - 68px); padding: 32px 16px 95px; }
  .welcome-row, .page-heading { align-items: flex-start; flex-direction: column; margin-bottom: 26px; }
  .welcome-row h1, .page-heading h1 { font-size: 2.25rem; }
  .streak-pill { margin-top: -5px; }
  .focus-card { min-height: 420px; align-items: flex-start; flex-direction: column; }
  .formula-orbit { align-self: center; margin-top: -5px; }
  .topic-preview { grid-template-columns: 1fr; }
  .stats-strip { gap: 8px; }
  .stats-strip article { min-height: 76px; padding: 11px; }
  .stats-strip small { font-size: .75rem; }
  .official-card { flex-direction: column; }
  .mobile-nav { position: fixed; z-index: 30; left: 10px; right: 10px; bottom: max(9px, env(safe-area-inset-bottom)); height: 62px; display: grid; grid-template-columns: repeat(5, 1fr); padding: 5px; border: 1px solid var(--line-strong); border-radius: 19px; background: color-mix(in srgb, var(--panel-solid) 90%, transparent); box-shadow: 0 16px 60px rgba(0,0,0,.35); backdrop-filter: blur(22px); }
  .mobile-nav a { display: grid; place-items: center; align-content: center; gap: 2px; border-radius: 14px; color: var(--muted); font-size: .75rem; font-weight: 700; }
  .mobile-nav a.active { color: var(--mint-ink); background: var(--mint); }
  .mobile-nav svg { width: 19px; height: 19px; }
  .telegram-help { position: fixed; z-index: 31; right: 16px; bottom: calc(max(9px, env(safe-area-inset-bottom)) + 72px); min-height: 46px; display: inline-flex; align-items: center; gap: 8px; padding: 0 15px; border: 1px solid color-mix(in srgb, var(--mint) 42%, var(--line)); border-radius: 999px; color: #082016; background: linear-gradient(135deg, var(--lime), var(--mint)); box-shadow: 0 14px 42px rgba(5, 21, 15, .35); font-size: .78rem; font-weight: 850; }
  .telegram-help svg { width: 18px; height: 18px; }
  .library-toolbar { align-items: stretch; flex-direction: column; }
  .filter-chips { width: calc(100vw - 32px); }
  .inline-search { min-width: 100%; }
  .library-summary { overflow-x: auto; white-space: nowrap; }
  .library-grid, .test-modes, .bookmarks-grid { grid-template-columns: 1fr; }
  .test-mode, .test-mode:last-child { grid-column: auto; min-height: 365px; }
  .resume-test, .exam-note { align-items: flex-start; grid-template-columns: 1fr; flex-direction: column; }
  .resume-actions { width: 100%; }
  .resume-actions button { flex: 1; }
  .exam-note .text-button { justify-self: start; }
  .runner-header { grid-template-columns: auto 1fr auto; }
  .runner-title > span { display: none; }
  .timer { min-width: auto; }
  .question-map { padding: 15px; }
  .question-map-grid { grid-template-columns: repeat(9, 1fr); gap: 5px; }
  .question-map-head, .map-legend { display: none; }
  .question-stage { min-height: 520px; padding: 22px 16px; }
  .question-actions { align-items: stretch; flex-direction: column-reverse; }
  .question-actions > div { display: grid; grid-template-columns: 1fr 1fr; }
  .question-actions > button { width: 100%; }
  .result-hero { grid-template-columns: 1fr; text-align: center; }
  .result-score { margin: 0 auto; }
  .result-actions { grid-column: auto; }
  .result-stats { grid-template-columns: repeat(2, 1fr); }
  .review-detail { padding-left: 18px; }
  .category-row { grid-template-columns: 95px 1fr 36px; }
  .official-facts { grid-template-columns: 1fr; }
  .module-list { grid-template-columns: 1fr; }
  .topic-dialog-content, .official-dialog, .profile-dialog, .name-dialog form { padding: 27px 20px; }
  .topic-dialog-actions { flex-direction: column; }
  .topic-dialog-actions button { width: 100%; }
  .toast-region { right: 12px; left: 12px; bottom: 140px; }
  .toast { max-width: none; }
}

@media (max-width: 420px) {
  .search-box span { max-width: 145px; }
  .focus-card { padding: 24px 20px; }
  .formula-orbit { transform: scale(.9); margin-bottom: -12px; }
  .stats-strip { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .library-card { min-height: 230px; }
  .question-map-grid { grid-template-columns: repeat(8, 1fr); }
  .answer-option { padding-inline: 10px; }
  .answer-letter { width: 33px; height: 33px; }
  .result-stats { grid-template-columns: 1fr 1fr; }
  .dialog-actions { grid-template-columns: 1fr; }
}

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