/* fallback palette = swiss (default theme, used if data-theme is missing/corrupt) */
:root{ --r:3px }
:root:not([data-theme]), :root[data-theme=""]{
  color-scheme:dark;
  --bg:#0e0e10;--bg2:#141417;--bg3:#1c1c20;
  --ink:#f0f0ee;--ink2:#a8a8a4;--ink3:#787874;
  --line:#26262a;--line2:#3a3a40;
  --accent:#54c8f0;--accent-ink:#0e0e10;--accent-dim:#15242c;
  --ok:#4fc383;--bad:#ff5d5d;--warn:#e0b34d;
  --font-ui:"Segoe UI",system-ui,-apple-system,sans-serif;
  --font-serif:Charter,Georgia,"Times New Roman",serif;
  --font-mono:"Cascadia Code",Consolas,ui-monospace,monospace;
}
:root[data-theme="paper"]{
  color-scheme:light;
  --bg:#f7f4ed;--bg2:#fffdf8;--bg3:#ede8db;
  --ink:#211d16;--ink2:#5d5749;--ink3:#93896f;
  --line:#ddd5c2;--line2:#c2b89f;
  --accent:#b3440c;--accent-ink:#fffdf8;--accent-dim:#e9dcc9;
  --ok:#1f6b3a;--bad:#b3261e;--warn:#8a5a00;
  --font-ui:"Segoe UI",system-ui,-apple-system,sans-serif;
  --font-serif:Charter,Georgia,"Times New Roman",serif;
  --font-mono:"Cascadia Code",Consolas,ui-monospace,monospace;
}
:root[data-theme="swiss"]{
  color-scheme:dark;
  --bg:#0e0e10;--bg2:#141417;--bg3:#1c1c20;
  --ink:#f0f0ee;--ink2:#a8a8a4;--ink3:#787874;
  --line:#26262a;--line2:#3a3a40;
  --accent:#54c8f0;--accent-ink:#0e0e10;--accent-dim:#15242c;
  --ok:#4fc383;--bad:#ff5d5d;--warn:#e0b34d;
  --font-ui:"Segoe UI",system-ui,-apple-system,sans-serif;
  --font-serif:Charter,Georgia,"Times New Roman",serif;
  --font-mono:"Cascadia Code",Consolas,ui-monospace,monospace;
}
:root[data-theme="slate"]{
  color-scheme:dark;
  --bg:#191a1c;--bg2:#1f2124;--bg3:#27292d;
  --ink:#e8e6df;--ink2:#a3a098;--ink3:#7a776e;
  --line:#2c2e32;--line2:#3c3f43;
  --accent:#d9a04a;--accent-ink:#191a1c;--accent-dim:#3a3225;
  --ok:#8bc49a;--bad:#e08575;--warn:#d9c27a;
  --font-ui:"Segoe UI",system-ui,-apple-system,sans-serif;
  --font-serif:Charter,Georgia,"Times New Roman",serif;
  --font-mono:"Cascadia Code",Consolas,ui-monospace,monospace;
}
:root[data-theme="terminal"]{
  color-scheme:dark;
  --bg:#0c0e0d;--bg2:#111413;--bg3:#181d1a;
  --ink:#cfdcd0;--ink2:#8fa396;--ink3:#5f7264;
  --line:#1c211e;--line2:#2b332d;
  --accent:#7fd68f;--accent-ink:#0c0e0d;--accent-dim:#1d2b20;
  --ok:#7fd68f;--bad:#e07a5f;--warn:#d8c268;
  --font-ui:"Cascadia Code",Consolas,ui-monospace,monospace;
  --font-serif:Charter,Georgia,serif;
  --font-mono:"Cascadia Code",Consolas,ui-monospace,monospace;
}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{height:100%}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100%;overflow-x:hidden}
button,select,input,textarea{font-size:14px} /* prevent iOS focus-zoom */
button:not([disabled]){cursor:pointer}
input[type="radio"]{min-width:0}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
a{color:var(--accent)}
button{font-family:inherit}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line2);border:3px solid var(--bg)}
::-webkit-scrollbar-track{background:transparent}
@media (pointer:coarse){:focus-visible{outline-width:3px}}

.site-shell{max-width:1120px;margin:0 auto;padding:0 24px 96px;padding-left:max(24px, env(safe-area-inset-left));padding-right:max(24px, env(safe-area-inset-right))}

.topbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:12px;height:52px;background:var(--bg);border-bottom:1px solid var(--line);overflow:visible}
.brand-button{background:none;border:none;padding:8px 6px 8px 0;cursor:pointer;display:flex;align-items:baseline;gap:8px}
.brand-word{font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.005em;white-space:nowrap}
.brand-word .brand-dot{color:var(--accent)}
.brand-word em{font-style:normal;font-family:var(--font-mono);font-size:9.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);padding:1px 5px;border-radius:2px;transform:translateY(-2px)}
.crumbs{display:flex;align-items:center;gap:0;flex-wrap:wrap;min-height:52px}
.crumbs button{background:none;border:none;font-size:12.5px;color:var(--ink2);cursor:pointer;padding:4px 7px;border-radius:2px}
.crumbs button:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumbs button.crumb-here{color:var(--ink);font-weight:600;cursor:default;text-decoration:none}
.crumbs .crumb-sep{color:var(--ink3);font-size:11px}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:8px;overflow:visible;flex-shrink:0}
.offline-badge{font-family:var(--font-mono);font-size:9.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2);border:1px solid var(--line2);padding:3px 7px;border-radius:2px;white-space:nowrap}
.icon-button,.settings-button,.theme-button{background:none;border:1px solid var(--line2);color:var(--ink);font-size:12px;font-weight:600;padding:6px 11px;border-radius:2px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.icon-button:hover,.settings-button:hover,.theme-button:hover{border-color:var(--accent);color:var(--accent)}
.stats-port-note{font-size:11.5px;color:var(--ink3);margin:0 0 10px}
.purchase-button.danger{border-color:var(--bad);color:var(--bad)}
.icon-button b,.icon-button span.n{font-variant-numeric:tabular-nums}

.theme-menu{position:relative}
.theme-pop{position:absolute;top:calc(100% + 8px);right:0;z-index:200;min-width:220px;background:var(--bg2);border:1px solid var(--line2);border-radius:4px;box-shadow:0 8px 24px rgba(0,0,0,.25),0 2px 6px rgba(0,0,0,.15);padding:6px;animation:popFadeIn .12s ease}
@keyframes popFadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.theme-pop button{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;background:none;border:none;padding:8px 10px;border-radius:3px;cursor:pointer;transition:background .1s}
.theme-pop button:hover{background:var(--bg3)}
.theme-pop button[aria-checked="true"]{background:var(--accent-dim)}
.theme-pop .tp-name{font-size:13px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center}
.theme-pop .tp-name i{font-style:normal;color:var(--accent);display:none;font-weight:bold}
.theme-pop button[aria-checked="true"] .tp-name i{display:inline}
.theme-pop .tp-desc{font-size:11px;color:var(--ink2)}

.page-head{margin:52px 0 24px;display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.page-head h1{font-family:var(--font-serif);font-size:clamp(24px,3.2vw,34px);line-height:1.12;font-weight:700;margin:6px 0 0;letter-spacing:-.012em;max-width:24ch}
.company-dateline{margin:0;font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.page-summary{margin:0;font-size:13.5px;color:var(--ink2);max-width:38ch}

.company-view{padding-bottom:48px}
.company-stage{padding:48px 0;max-width:600px}
.company-view h1{font-family:var(--font-serif);font-size:clamp(28px,3.6vw,40px);line-height:1.08;font-weight:700;margin:10px 0 14px;letter-spacing:-.015em}
.company-view h1 span{color:var(--ink2)}
.company-summary{color:var(--ink2);font-size:13.5px;margin:0}

.domain-tabs{display:flex;gap:4px;margin-bottom:12px}
.domain-tab{background:none;border:none;color:var(--ink2);font-family:var(--font-ui),sans-serif;font-size:14px;font-weight:600;cursor:pointer;padding:8px 16px;border-radius:4px;transition:all .15s}
.domain-tab:hover{background:var(--bg2);color:var(--ink)}
.domain-tab.active{background:var(--ink);color:var(--bg);font-weight:700}

.company-route-ledger{display:grid;grid-template-columns:repeat(auto-fill, minmax(320px, 1fr));gap:16px;border:none}
.company-route{display:grid;grid-template-columns:34px 1fr auto 20px;gap:14px;align-items:center;text-align:left;background:var(--bg2);border:1px solid var(--line2);padding:14px 18px;border-radius:6px;cursor:pointer;color:var(--ink);font:inherit;transition:all .15s;text-decoration:none}
.company-route:hover{background:var(--accent-dim);border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.1)}
.company-route:hover .company-route-action{color:var(--accent)}
.route-glyph{width:28px;height:28px;display:grid;place-items:center;font-family:var(--font-mono);font-size:12px;font-weight:700;border:1px solid var(--line2);border-radius:4px;color:var(--ink2)}
.route-glyph.qualcomm-glyph{color:#3b82f6;border-color:rgba(59,130,246,.45)}
.route-glyph.accenture-glyph{color:#a855f7;border-color:rgba(168,85,247,.45)}
.route-glyph.mathworks-glyph{color:#f97316;border-color:rgba(249,115,22,.45)}
.route-glyph.micron-glyph{color:#06b6d4;border-color:rgba(6,182,212,.45)}
.route-glyph.ibm-glyph{color:#38bdf8;border-color:rgba(56,189,248,.45)}
.route-glyph.cognizant-glyph{color:#60a5fa;border-color:rgba(96,165,250,.45)}
.route-glyph.nvidia-glyph{color:#84cc16;border-color:rgba(132,204,22,.45)}
.route-glyph.ti-glyph{color:#ef4444;border-color:rgba(239,68,68,.45)}
.route-glyph.paloalto-glyph{color:#10b981;border-color:rgba(16,185,129,.45)}
.route-glyph.reliance-glyph{color:#6366f1;border-color:rgba(99,102,241,.45)}
.route-glyph.pwc-glyph{color:#f59e0b;border-color:rgba(245,158,11,.45)}
.route-glyph.optym-glyph{color:#ec4899;border-color:rgba(236,72,153,.45)}
.route-glyph.sigmoid-glyph{color:#14b8a6;border-color:rgba(20,184,166,.45)}
.route-glyph.deloitte-glyph{color:#84cc16;border-color:rgba(132,204,22,.45)}
.route-glyph.oracle-glyph{color:#f43f5e;border-color:rgba(244,63,94,.45)}
.route-glyph.intel-glyph{color:#0284c7;border-color:rgba(2,132,199,.45)}
.route-glyph.network-glyph{color:#06b6d4;border-color:rgba(6,182,212,.45)}
.route-glyph.other-glyph{color:#a855f7;border-color:rgba(168,85,247,.45)}
.route-glyph.puzzle-glyph{color:#eab308;border-color:rgba(234,179,8,.45)}
.route-body{display:grid;gap:1px;min-width:0}
.company-route-name{font-size:14.5px;font-weight:700;letter-spacing:-.005em}
.company-route-meta{font-size:12px;color:var(--ink2)}
.company-route-action{color:var(--ink3);font-weight:700;font-size:13px;text-align:right}
.company-footer{margin-top:56px;border-top:1px solid var(--line);padding-top:14px;color:var(--ink3);font-size:12px}

.section-ledger{display:grid;border:1px solid var(--line2)}
.section-row{display:grid;grid-template-columns:40px 1fr auto 20px;gap:16px;align-items:center;text-align:left;background:var(--bg2);border:none;border-bottom:1px solid var(--line);padding:16px 18px;cursor:pointer;color:var(--ink);font:inherit;transition:background .1s}
.section-row:last-child{border-bottom:none}
.section-row:hover{background:var(--accent-dim)}
.section-number{font-family:var(--font-mono);font-size:11px;color:var(--ink3)}
.section-name strong{display:block;font-size:14.5px}
.section-name small{color:var(--ink2);font-size:12px}
.section-status{font-family:var(--font-mono);font-size:11.5px;color:var(--ink2);font-variant-numeric:tabular-nums;white-space:nowrap}
.section-arrow{color:var(--ink3)}

.trial-ledger{display:grid;border:1px solid var(--line2)}
.trial-row{display:grid;grid-template-columns:40px 1fr auto auto;gap:16px;align-items:center;background:var(--bg2);border:none;border-bottom:1px solid var(--line);padding:15px 18px}
.trial-row:last-child{border-bottom:none}
.trial-number{font-family:var(--font-mono);font-size:11px;color:var(--ink3)}
.trial-copy h3{margin:0 0 1px;font-size:14.5px}
.trial-copy p{margin:0;color:var(--ink2);font-size:12px}
.trial-data{text-align:right}
.trial-data strong{display:block;font-family:var(--font-mono);font-size:14px;color:var(--ink);font-variant-numeric:tabular-nums}
.trial-data span{font-size:10.5px;color:var(--ink3)}
.launch-button{background:var(--accent);border:1px solid var(--accent);color:var(--accent-ink);font-size:12.5px;font-weight:700;letter-spacing:.02em;cursor:pointer;padding:9px 16px;border-radius:2px}
.launch-button:hover{background:var(--bg);color:var(--accent)}

.game-view{padding-top:24px}
.game-header{display:flex;align-items:center;gap:14px;margin:28px 0 20px;flex-wrap:wrap}
.back-button,.mcq-back,.coding-back,.section-back{background:none;border:none;font-size:12.5px;font-weight:600;color:var(--ink2);cursor:pointer;padding:6px 0;white-space:nowrap}
.back-button:hover,.mcq-back:hover,.coding-back:hover,.section-back:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.game-heading span{display:block;font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3)}
.game-heading h1{margin:2px 0 0;font-family:var(--font-serif);font-size:22px;font-weight:700}
.difficulty-control{display:flex;margin-left:auto;border:1px solid var(--line2);border-radius:2px;overflow:hidden}
.difficulty-control button{background:none;border:none;color:var(--ink2);font-size:12px;font-weight:600;cursor:pointer;padding:7px 14px;border-right:1px solid var(--line)}
.difficulty-control button:last-child{border-right:none}
.difficulty-control button.active{background:var(--accent);color:var(--accent-ink)}
.game-mount{min-height:380px;border:1px solid var(--line2);background:var(--bg2);padding:24px;border-radius:2px}
.game-grid{display:grid;gap:8px;justify-content:center;margin:20px 0}
.game-hud{display:flex;gap:22px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:var(--ink2)}
.game-hud b{color:var(--ink);font-variant-numeric:tabular-nums}
.cell-btn{background:var(--bg);border:1px solid var(--line2);color:var(--ink);font-size:15px;cursor:pointer;border-radius:2px;aspect-ratio:1;width:42px}
.cell-btn:hover{border-color:var(--accent)}
.cell-btn.key{background:var(--warn);border-color:var(--warn);color:var(--bg)}
.cell-btn.exit{background:var(--ok);border-color:var(--ok);color:var(--bg)}
.cell-btn.player{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.cell-btn.dim{opacity:.28}
.math-card{background:var(--bg);border:1px solid var(--line2);border-radius:2px;padding:16px;text-align:center;cursor:grab;min-width:96px}
.math-card:hover{border-color:var(--accent)}
.math-card b{font-size:19px;display:block;font-variant-numeric:tabular-nums}
.math-card small{color:var(--ink3);font-size:10.5px}
.math-card.selected{border-color:var(--accent);background:var(--accent-dim)}
.math-slot{min-height:48px;border:1px dashed var(--line2);border-radius:2px;display:flex;align-items:center;justify-content:center;gap:10px;padding:6px;flex-wrap:wrap;margin:12px 0}
.timer-bar{height:4px;background:var(--bg3);border-radius:0;overflow:hidden;margin:10px 0}
.timer-bar i{display:block;height:100%;background:var(--accent)}
.path-tile{width:60px;height:60px;border:1px solid var(--line2);background:var(--bg);border-radius:2px;cursor:pointer;position:relative;overflow:hidden;padding:0}
.path-tile svg{position:absolute;inset:0;width:100%;height:100%}
.path-tile svg path{stroke:var(--accent);stroke-width:9;fill:none;stroke-linecap:round}
.path-tile.locked{opacity:.3}

.practice-view{padding-top:24px}
.mcq-appbar,.coding-appbar{display:flex;align-items:center;gap:16px;margin:28px 0 16px;flex-wrap:wrap}
.mcq-app-title h1{margin:0;font-family:var(--font-serif);font-size:21px;font-weight:700}
.mcq-app-title p{margin:1px 0 0;font-size:12px;color:var(--ink3)}
select,input,textarea{background:var(--bg2);border:1px solid var(--line2);color:var(--ink);font-family:inherit;font-size:13px;padding:7px 9px;border-radius:2px}
input,textarea{width:100%}
select:hover,input:hover,textarea:hover{border-color:var(--ink3)}
textarea{font-family:var(--font-mono);font-size:12.5px;line-height:1.55}

.mcq-workbench{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start;width:100%}
.coding-workbench{display:grid;grid-template-columns:1fr;gap:16px;width:100%}

/* ============ Desktop Question Palette Sidebar ============ */
.mcq-palette{background:var(--bg2);border:1px solid var(--line2);border-radius:4px;padding:16px 14px;position:sticky;top:68px;display:flex;flex-direction:column;gap:10px;max-height:calc(100vh - 84px);box-shadow:0 2px 8px rgba(0,0,0,.08)}
.palette-head{display:flex;flex-direction:column;gap:8px}
.palette-title-row{display:flex;flex-direction:column;gap:2px}
.palette-title-row h3{margin:0;font-family:var(--font-ui),sans-serif;font-size:15.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.palette-sub{font-family:var(--font-mono);font-size:11px;color:var(--ink3);font-variant-numeric:tabular-nums}
.palette-filters{display:flex;gap:3px;background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:3px}
.palette-tab{flex:1;background:none;border:none;color:var(--ink2);font-size:11.5px;font-weight:600;cursor:pointer;padding:6px 4px;border-radius:3px;text-align:center;transition:background .12s,color .12s}
.palette-tab:hover{color:var(--ink)}
.palette-tab.active{background:var(--bg3);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.palette-search{width:100%;font-size:11.5px;padding:6px 9px;background:var(--bg);border:1px solid var(--line);border-radius:3px;color:var(--ink);outline:none}
.palette-search:focus{border-color:var(--accent)}
.palette-select{width:100%;font-size:11px;padding:5px 8px;background:var(--bg);border:1px solid var(--line);border-radius:3px;color:var(--ink);cursor:pointer;outline:none}
.palette-select:focus{border-color:var(--accent)}
.palette-grid-container{overflow-y:auto;max-height:330px;padding-right:3px;scrollbar-width:thin}
.palette-grid-container::-webkit-scrollbar{width:5px}
.palette-grid-container::-webkit-scrollbar-thumb{background:var(--line2);border-radius:3px}
.palette-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:7px;padding:2px 0}
.q-palette-btn{aspect-ratio:1;min-height:38px;display:grid;place-items:center;background:var(--bg);border:1px solid var(--line2);border-radius:4px;color:var(--ink2);font-family:var(--font-mono);font-size:12.5px;font-weight:600;cursor:pointer;user-select:none;touch-action:manipulation;transition:background .1s,border-color .1s,color .1s,transform .06s;position:relative}
.q-palette-btn:hover{border-color:var(--ink3);color:var(--ink)}
.q-palette-btn:active{transform:scale(.94)}
.q-palette-btn.is-current{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:700}
:root[data-theme="swiss"] .q-palette-btn.is-current{background:#d8e5b6;color:#141812;border-color:#d8e5b6}
:root[data-theme="paper"] .q-palette-btn.is-current{background:#2a251e;color:#f7f4ec;border-color:#2a251e}
:root[data-theme="slate"] .q-palette-btn.is-current{background:#88c0d0;color:#1e2430;border-color:#88c0d0}
:root[data-theme="terminal"] .q-palette-btn.is-current{background:#00ff66;color:#050e05;border-color:#00ff66}
.q-palette-btn.is-attempted{border-color:var(--ok);color:var(--ok)}
.q-palette-btn.is-attempted.is-current{background:var(--ok);color:var(--bg);border-color:var(--ok)}
.q-palette-btn.is-wrong{border-color:var(--bad);color:var(--bad)}
.q-palette-btn.is-wrong.is-current{background:var(--bad);color:#fff;border-color:var(--bad)}
.q-palette-btn.is-bookmarked::after{content:"";position:absolute;top:3px;right:3px;width:6px;height:6px;background:var(--warn);border-radius:50%}
.palette-legend{display:grid;grid-template-columns:1fr 1fr;gap:6px 8px;padding-top:10px;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:10px;color:var(--ink3)}
.legend-item{display:flex;align-items:center;gap:5px;white-space:nowrap}
.legend-box{width:9px;height:9px;border-radius:2px;display:inline-block;flex-shrink:0}
.legend-box.not-attempted{background:var(--bg);border:1px solid var(--line2)}
.legend-box.attempted{background:transparent;border:1.5px solid var(--ok)}
.legend-box.current{background:var(--accent);border:1px solid var(--accent)}
:root[data-theme="swiss"] .legend-box.current{background:#d8e5b6;border-color:#d8e5b6}
:root[data-theme="paper"] .legend-box.current{background:#2a251e;border-color:#2a251e}
:root[data-theme="slate"] .legend-box.current{background:#88c0d0;border-color:#88c0d0}
:root[data-theme="terminal"] .legend-box.current{background:#00ff66;border-color:#00ff66}

/* ============ Top Nav Strip (Legacy & Mobile fallback) ============ */
.mcq-top-nav{background:var(--bg2);border:1px solid var(--line2);border-radius:2px;padding:14px 16px;display:flex;flex-direction:column;gap:12px}
.coding-top-nav{padding:12px 14px}
.mcq-selectors-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mcq-select-field{display:flex;flex-direction:column;gap:4px}
.msf-label{font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}
.msf-select{width:100%;background:var(--bg);border:1px solid var(--line2);color:var(--ink);font-size:13px;padding:8px 10px;border-radius:2px;cursor:pointer;outline:none}
.msf-select:focus{border-color:var(--accent)}
.mcq-strip-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.mcq-strip-toolbar .rail-filters{margin-bottom:0}
.mcq-strip-search{flex:1 1 140px;max-width:240px;padding:6px 9px;font-size:12px;background:var(--bg);border:1px solid var(--line);border-radius:2px}
.mcq-nav-summary{font-family:var(--font-mono);font-size:11px;color:var(--ink3);font-variant-numeric:tabular-nums;margin-left:auto;white-space:nowrap}
.mcq-question-strip-container{width:100%;position:relative;overflow:hidden}
.mcq-question-strip{display:flex;align-items:center;gap:8px;overflow-x:auto;overflow-y:hidden;padding:2px 2px 6px 2px;white-space:nowrap;scroll-behavior:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;scrollbar-width:thin}
.mcq-question-strip::-webkit-scrollbar{height:4px}
.mcq-question-strip::-webkit-scrollbar-thumb{background:var(--line2);border-radius:2px}
.q-strip-btn{flex:0 0 44px;width:44px;height:44px;display:grid;place-items:center;background:var(--bg);border:1px solid var(--line2);border-radius:4px;color:var(--ink2);font-family:var(--font-mono);font-size:13px;font-weight:600;cursor:pointer;user-select:none;touch-action:manipulation;transition:background .12s,border-color .12s,color .12s,transform .08s;font-variant-numeric:tabular-nums}
.q-strip-btn:hover{border-color:var(--ink3);color:var(--ink)}
.q-strip-btn:active{transform:scale(.94)}
.q-strip-btn.is-current{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:700}
:root[data-theme="swiss"] .q-strip-btn.is-current{background:#d8e5b6;color:#141812;border-color:#d8e5b6}
:root[data-theme="paper"] .q-strip-btn.is-current{background:#2a251e;color:#f7f4ec;border-color:#2a251e}
:root[data-theme="slate"] .q-strip-btn.is-current{background:#88c0d0;color:#1e2430;border-color:#88c0d0}
:root[data-theme="terminal"] .q-strip-btn.is-current{background:#00ff66;color:#050e05;border-color:#00ff66}
.q-strip-btn.is-attempted{border-color:var(--ok);color:var(--ok)}
.q-strip-btn.is-attempted.is-current{background:var(--ok);color:var(--bg);border-color:var(--ok)}
.q-strip-btn.is-wrong{border-color:var(--bad);color:var(--bad)}
.q-strip-btn.is-wrong.is-current{background:var(--bad);color:#fff;border-color:var(--bad)}

.rail-filters{display:flex;gap:0;border:1px solid var(--line);border-radius:2px;overflow:hidden}
.rail-filters button{flex:1;background:none;border:none;color:var(--ink2);font-size:11px;font-weight:600;cursor:pointer;padding:5px 7px;border-right:1px solid var(--line)}
.rail-filters button:last-child{border-right:none}
.rail-filters button.active{background:var(--bg3);color:var(--ink)}

.mcq-question-sheet,.section-engine-sheet{background:var(--bg2);border:1px solid var(--line2);padding:26px 30px;min-height:420px;border-radius:4px}
.rail-select{display:grid;gap:3px;font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:8px}
.rail-select select{font-size:12px;padding:5px 7px;text-transform:none;letter-spacing:0;font-weight:400}
.rail-foot{margin-top:10px;padding-top:9px;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:10.5px;color:var(--ink3);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.no-results{padding:60px 0;text-align:center}
.no-results strong{font-family:var(--font-serif);font-size:17px;display:block;margin-bottom:4px}
.no-results p{color:var(--ink2);font-size:12.5px;margin:0}

/* ---- Question Card & Header Bar ---- */
.question-card{outline:none}
.q-card-head{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:12px}
.q-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.q-topic-tag{color:#b37feb;font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:-.005em}
:root[data-theme="paper"] .q-topic-tag{color:#b3440c}
:root[data-theme="slate"] .q-topic-tag{color:#d9a04a}
:root[data-theme="terminal"] .q-topic-tag{color:#7fd68f}
.q-subtopic-tag{color:var(--ink2);font-size:12.5px;font-weight:500}
.q-diff-tag{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);border:1px solid var(--line);padding:2px 6px;border-radius:2px}
.q-actions-bar{display:flex;align-items:center;gap:14px;margin-left:auto}
.q-report-link{color:var(--bad)!important;opacity:.9}
.q-report-link:hover,.q-report-link:focus-visible{color:var(--bad)!important;opacity:1;background:color-mix(in srgb,var(--bad) 10%,transparent)}
.q-report-icon{font-size:14px;line-height:1;display:inline-block;color:var(--bad)}
.question-report-dialog{border:1px solid var(--line2);border-radius:4px;background:var(--bg2);color:var(--ink);width:min(560px,calc(100% - 2rem));max-height:min(90vh,720px);padding:0;overflow:auto;box-shadow:8px 8px 0 rgba(0,0,0,.12)}
.question-report-dialog::backdrop{background:rgba(0,0,0,.55)}
:root[data-theme="paper"] .question-report-dialog::backdrop{background:rgba(60,50,30,.25)}
.question-report-inner{width:100%;padding:24px 26px;display:grid;gap:14px}
.question-report-inner h2{margin:0;font-family:var(--font-serif);font-size:22px}
.question-report-context{margin:-8px 0 0;color:var(--ink2);font-size:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.question-report-reasons{border:0;padding:0;margin:0;display:grid;gap:8px;min-width:0}
.question-report-reasons label,.question-report-reasons input{box-sizing:border-box}
.question-report-reasons legend{font-size:12px;font-weight:700;color:var(--ink2);margin-bottom:3px}
.question-report-reasons label{display:grid;grid-template-columns:24px minmax(0,1fr);align-items:center;justify-content:start;gap:8px;font-size:13px;line-height:1.35;padding:10px 12px;min-height:42px;cursor:pointer;border:1px solid var(--line);border-radius:4px;background:var(--bg);transition:border-color .12s,background .12s,color .12s}
.question-report-reasons label:hover,.question-report-reasons label:focus-within{border-color:var(--accent);background:var(--accent-dim)}
.question-report-reasons label:has(input:checked){border-color:var(--bad);background:color-mix(in srgb,var(--bad) 12%,var(--bg));color:var(--ink)}
.question-report-reasons input{accent-color:var(--bad);margin:0;width:18px;height:18px;justify-self:start}
.question-report-details{display:grid;gap:6px;font-size:12px;font-weight:700;color:var(--ink2)}
.question-report-details textarea{resize:vertical;min-height:82px;padding:9px;border:1px solid var(--line2);background:var(--bg);color:var(--ink);font:inherit;font-size:13px;border-radius:2px}
.question-report-status{min-height:1.25em;margin:0;font-size:12px;color:var(--bad)}
.question-report-status.is-success{color:var(--ok)}
.question-report-actions{display:flex;justify-content:flex-end;gap:8px}
.question-report-actions .btn{min-width:92px}
.q-action-link{background:none;border:none;color:var(--ink2);font-size:12.5px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:5px;padding:4px 6px;border-radius:2px;transition:color .1s,background .1s}
.q-action-link:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.q-action-link.active{color:var(--warn)}
.q-action-link.danger:hover{color:var(--bad)}
.problem-question-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.problem-question-head h2{margin-top:0}
.question-heading-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.question-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}
.q-notes-box{margin:10px 0 16px;padding:12px;background:var(--bg);border:1px solid var(--line2);border-radius:4px}
.q-notes-box label strong{display:block;font-size:12px;color:var(--ink2);margin-bottom:6px}
.q-notes-box textarea{min-height:70px;background:var(--bg2);width:100%;resize:vertical;font-size:12.5px}
.question-title{margin:0 0 10px;font-family:var(--font-serif);font-size:19px;font-weight:700;line-height:1.25;letter-spacing:-.008em}
.question-prompt-wrap{margin-bottom:20px}
.question-prompt{white-space:pre-wrap;font-size:15.5px;line-height:1.65;margin:0;font-family:var(--font-ui),system-ui,-apple-system,sans-serif;letter-spacing:-.005em;color:var(--ink);font-weight:500}
.answer-set{border:none;margin:0 0 16px;padding:0}
.answer-option{display:flex;gap:14px;align-items:center;background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:12px 16px;cursor:pointer;margin-bottom:8px;transition:border-color .1s,background .1s;font-size:14px;line-height:1.5;min-height:48px}
.answer-option:hover{border-color:var(--ink3);background:var(--bg3)}
.answer-option input{position:absolute;opacity:0;width:1px;height:1px}
.answer-option .oletter{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:4px;background:var(--bg2);border:1px solid var(--line2);font-family:var(--font-mono);font-weight:700;font-size:12px;color:var(--ink2);flex-shrink:0}
.answer-option .otext{font-weight:500;color:var(--ink);flex:1}
.answer-option.is-picked{border-color:var(--accent);background:var(--accent-dim)}
.answer-option.is-picked .oletter{border-color:var(--accent);color:var(--accent);background:var(--bg)}
.answer-option input:focus-visible + .oletter{outline:2px solid var(--accent);outline-offset:2px}
.answer-option.is-correct{border-color:var(--ok);box-shadow:inset 2px 0 0 var(--ok);background:rgba(79,195,131,.08)}
.answer-option.is-correct .oletter{border-color:var(--ok);color:var(--ok);background:var(--bg)}
.answer-option.is-wrong{border-color:var(--bad);box-shadow:inset 2px 0 0 var(--bad);background:rgba(255,93,93,.08)}
.answer-option.is-wrong .oletter{border-color:var(--bad);color:var(--bad);background:var(--bg)}
.answer-actions{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.answer-status{font-size:12.5px;color:var(--ink3)}
.answer-status.ok{color:var(--ok);font-weight:600}
.answer-status.bad{color:var(--bad);font-weight:600}
.answer-explanation{margin:0 0 18px;border-left:2px solid var(--ok);background:var(--bg);border-radius:0 2px 2px 0;padding:11px 15px}
.answer-explanation strong{display:block;font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ok);margin-bottom:5px}
.answer-explanation p{margin:0;font-size:13px;line-height:1.6;white-space:pre-wrap}
.question-pagination{display:flex;align-items:center;gap:16px;border-top:1px solid var(--line);padding-top:16px}
.question-pagination button{background:none;border:none;font-size:12.5px;font-weight:600;color:var(--ink2);cursor:pointer;padding:4px 0}
.question-pagination button:hover:not(:disabled){color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.question-pagination button:disabled{opacity:.35;cursor:default}
.question-pagination span{font-family:var(--font-mono);font-size:11.5px;color:var(--ink3);font-variant-numeric:tabular-nums;margin-left:auto}
.mcq-qmeta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px;align-items:center}
.chip{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink2);border:1px solid var(--line);background:var(--bg);border-radius:2px;padding:2px 6px;font-variant-numeric:tabular-nums}
.chip.good{color:var(--ok);border-color:var(--ok)}
.chip.warn{color:var(--warn);border-color:var(--warn)}
.mcq-prompt{white-space:pre-wrap;font-size:15.5px;line-height:1.6;margin:0 0 22px;font-family:var(--font-serif);letter-spacing:.002em}
.option{display:flex;gap:12px;align-items:flex-start;background:var(--bg);border:1px solid var(--line);border-radius:2px;padding:12px 14px;cursor:pointer;margin-bottom:7px;font:inherit;font-size:14px;color:var(--ink);text-align:left;width:100%;transition:border-color .1s}
.option:hover{border-color:var(--accent)}
.option .oletter{font-family:var(--font-mono);color:var(--ink3);font-weight:700;font-size:12px;flex-shrink:0;padding-top:1px}
.option.picked{border-color:var(--accent);box-shadow:inset 2px 0 0 var(--accent)}
.option.correct{border-color:var(--ok);box-shadow:inset 2px 0 0 var(--ok)}
.option.incorrect{border-color:var(--bad);box-shadow:inset 2px 0 0 var(--bad)}
.option.locked{cursor:default}
.option.locked:hover{border-color:var(--line)}
.explanation{margin-top:18px;border-left:2px solid var(--ok);background:var(--bg);padding:13px 16px;white-space:pre-wrap;font-size:13px;line-height:1.6;border-radius:0 2px 2px 0}
.explanation h4{margin:0 0 5px;font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ok)}
.explanation.bad{border-left-color:var(--bad)}
.explanation.bad h4{color:var(--bad)}
.mcq-actions{display:flex;gap:8px;margin-top:20px;flex-wrap:wrap}
.btn{background:var(--bg);border:1px solid var(--line2);color:var(--ink);font-size:12.5px;font-weight:600;cursor:pointer;padding:8px 14px;border-radius:2px}
.btn:hover{border-color:var(--ink3)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:none;opacity:.88}
.btn:disabled{opacity:.45;cursor:default}

.coding-appbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:18px 0 14px;flex-wrap:wrap;padding:0 2px}
.coding-appbar-start{display:flex;align-items:center;gap:14px}
.coding-back{background:none;border:none;font-size:13px;font-weight:600;color:var(--ink2);cursor:pointer;display:inline-flex;align-items:center;gap:6px;padding:4px 0;transition:color .12s}
.coding-back:hover{color:var(--ink)}
.coding-app-title{display:flex;align-items:baseline;gap:8px}
.coding-app-title strong{font-family:var(--font-ui),sans-serif;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.coding-subtitle{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--ink2)}
.coding-category-nav{display:flex;gap:4px;background:var(--bg2);border:1px solid var(--line2);border-radius:4px;padding:3px}
.track-pill{background:none;border:none;color:var(--ink2);font-size:11.5px;font-weight:600;cursor:pointer;padding:5px 12px;border-radius:3px;transition:background .12s,color .12s}
.track-pill:hover{color:var(--ink)}
.track-pill.active{background:var(--bg3);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.track-pill.track-pill-not-now{border:1px dashed var(--line2);color:var(--ink2)}
.track-pill.track-pill-not-now:hover{color:var(--ink);border-color:var(--ink3)}
.track-pill.track-pill-not-now.active{background:var(--accent-dim);border:1px solid var(--accent);color:var(--accent)}
.judge-status-badge{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:11px;color:var(--ink2);margin-left:auto}
.judge-dot{color:#7ee787;font-size:14px;line-height:1}

/* ============ 3-Column Desktop Coding Workbench ============ */
.coding-workbench{display:grid;grid-template-columns:220px minmax(360px,38%) 1fr;gap:0;border:1px solid var(--line2);border-radius:4px;overflow:hidden;background:var(--bg2);min-height:calc(100vh - 160px);width:100%}

/* Column 1: Left Problem Rail */
.coding-rail{border-right:1px solid var(--line);display:flex;flex-direction:column;background:var(--bg2);min-width:0}
.coding-rail-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink3);background:var(--bg2)}
.coding-rail-head .crh-label{font-weight:700;text-transform:uppercase}
.coding-rail-head .crh-cat{color:var(--accent);font-weight:700}
.coding-rail-mode-bar{display:flex;border-bottom:1px solid var(--line);background:var(--bg)}
.rail-mode-btn{flex:1;padding:7px 8px;background:none;border:none;border-bottom:2px solid transparent;font-family:var(--font-mono);font-size:10px;color:var(--ink3);cursor:pointer;transition:all .12s;display:flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap}
.rail-mode-btn:hover{color:var(--ink)}
.rail-mode-btn.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:700;background:var(--bg2)}
.rail-mode-btn span{font-size:9.5px;padding:1px 5px;border-radius:10px;background:var(--bg3);color:var(--ink2)}
.coding-rail-list{overflow-y:auto;flex:1;max-height:calc(100vh - 250px);display:flex;flex-direction:column;scrollbar-width:thin}
.cq-rail-item{display:grid;grid-template-columns:22px 1fr auto;gap:10px;align-items:center;text-align:left;background:transparent;border:none;border-bottom:1px solid var(--line);padding:12px 14px;cursor:pointer;color:var(--ink);transition:background .1s;width:100%}
.cq-rail-item:hover{background:var(--bg3)}
.cq-rail-item.active{background:var(--bg);box-shadow:inset 3px 0 0 var(--accent)}
.cq-rail-num{font-family:var(--font-mono);font-size:11px;color:var(--ink3);font-variant-numeric:tabular-nums}
.cq-rail-body{display:flex;flex-direction:column;gap:2px;min-width:0}
.cq-rail-title{display:block;font-size:12.5px;font-weight:600;line-height:1.35;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cq-rail-meta-row{display:flex;align-items:center;gap:5px}
.cq-rail-origcat{font-family:var(--font-mono);font-size:9px;font-weight:700;padding:1px 4px;border-radius:2px;background:var(--bg3);color:var(--ink2);letter-spacing:.05em}
.cq-rail-diff{font-family:var(--font-mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink3)}
.cq-rail-check{color:var(--ok);font-size:12px;font-weight:bold}
.cq-empty-rail{padding:32px 16px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}
.cq-empty-icon{font-size:28px;opacity:.7;margin-bottom:2px}
.cq-empty-title{font-size:13.5px;font-weight:700;color:var(--ink)}
.cq-empty-sub{font-size:11.5px;color:var(--ink3);line-height:1.4;margin:0 0 10px}
.btn-empty-switch{font-family:var(--font-ui),sans-serif;font-size:11.5px;font-weight:600;padding:6px 12px;border-radius:4px;border:1px solid var(--accent);background:var(--accent-dim);color:var(--accent);cursor:pointer;transition:all .15s}
.btn-empty-switch:hover{background:var(--accent);color:var(--accent-ink)}
.cq-sheet-empty{padding:50px 24px;text-align:center;max-width:480px;margin:20px auto;display:flex;flex-direction:column;align-items:center;gap:10px}
.cq-sheet-empty-badge{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:3px 8px;border-radius:3px;background:var(--bg3);color:var(--ink3);border:1px solid var(--line2)}
.cq-sheet-empty h2{font-size:19px;font-weight:700;color:var(--ink);margin:0}
.cq-sheet-empty p{font-size:13px;color:var(--ink2);line-height:1.6;margin:0}
.cq-sheet-empty-actions{margin-top:10px}
.prob-tag.not-now-tag{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2);background:var(--bg3);border:1px solid var(--line2);padding:1px 6px;border-radius:2px}
.coding-rail-foot{padding:10px 14px;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:10.5px;color:var(--ink3);margin-top:auto;background:var(--bg2)}

/* Column 2: Problem Pane */
.problem-pane{border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0;background:var(--bg2)}
.panel-toolbar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--line);font-size:11px;color:var(--ink3);font-family:var(--font-mono);background:var(--bg2)}
.panel-title-group{display:flex;align-items:center;gap:6px;color:var(--ink);font-weight:700}
.panel-icon{font-size:13px}
.panel-pos{font-variant-numeric:tabular-nums}
.problem-sheet{padding:20px 22px;overflow-y:auto;max-height:calc(100vh - 240px);scrollbar-width:thin}
.problem-meta{display:flex;align-items:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.prob-tag.topic{font-family:var(--font-mono);font-size:11.5px;font-weight:700;color:var(--ink2)}
.prob-tag.diff{font-family:var(--font-mono);font-size:10px;font-weight:600;text-transform:uppercase;color:var(--ink2);border:1px solid var(--line);padding:1px 6px;border-radius:2px}
.prob-id{font-family:var(--font-mono);font-size:10px;color:var(--ink3);margin-left:auto}
.problem-sheet h2{font-family:var(--font-ui),sans-serif;font-size:19px;font-weight:700;margin:0 0 14px;color:var(--ink);letter-spacing:-.01em}
.problem-prompt{font-family:var(--font-ui),system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.65;margin:0 0 16px;color:var(--ink);white-space:pre-wrap;font-weight:450}
.problem-program-box{background:var(--bg);border:1px solid var(--line);border-left:3px solid var(--line2);border-radius:4px;padding:10px 14px;margin:16px 0;display:flex;flex-direction:column;gap:3px}
.ppb-label{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink2)}
.ppb-value{font-family:var(--font-mono);font-size:12.5px;color:var(--ink)}
.problem-contract-table{display:grid;border:1px solid var(--line);border-radius:4px;overflow:hidden;margin:16px 0;background:var(--bg)}
.pct-row{display:grid;grid-template-columns:100px 1fr;border-bottom:1px solid var(--line);padding:9px 12px;font-size:12.5px;align-items:baseline}
.pct-row:last-child{border-bottom:none}
.pct-label{font-family:var(--font-mono);font-size:10.5px;font-weight:700;text-transform:uppercase;color:var(--ink3)}
.pct-content{color:var(--ink);font-size:12.5px;line-height:1.5}

/* ============ Column 3: Code Writing Area (Default Dark Theme) ============ */
.editor-sheet{display:flex;flex-direction:column;min-width:0;background:#0d1117;border-left:1px solid #30363d}
.editor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 14px;background:#161b22;border-bottom:1px solid #30363d}
.editor-lang-wrap{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;color:#8b949e}
.editor-code-icon{font-weight:600;color:#c9d1d9}
.editor-lang-select{background:#21262d;border:1px solid #30363d;color:#c9d1d9;font-size:11px;padding:4px 8px;border-radius:3px;cursor:pointer;outline:none}
.editor-actions{display:flex;align-items:center;gap:8px}
.btn-editor-action{font-family:var(--font-ui),sans-serif;font-size:12px;font-weight:600;cursor:pointer;padding:6px 14px;border-radius:4px;border:1px solid #30363d;background:#21262d;color:#c9d1d9;transition:all .12s}
.btn-editor-action:hover{background:#30363d;color:#fff}
.btn-editor-run{font-family:var(--font-ui),sans-serif;font-size:12px;font-weight:700;cursor:pointer;padding:6px 16px;border-radius:4px;border:1px solid #388bfd;background:#1f6feb;color:#ffffff;transition:opacity .12s,background .12s}
.btn-editor-run:hover{background:#388bfd}
.btn-editor-submit{font-family:var(--font-ui),sans-serif;font-size:12px;font-weight:700;cursor:pointer;padding:6px 16px;border-radius:4px;border:1px solid #2ea043;background:#238636;color:#ffffff;transition:opacity .12s,background .12s}
.btn-editor-submit:hover{background:#2ea043}
.execution-time-badge{font-family:var(--font-mono);font-size:11px;font-weight:600;padding:4px 9px;border-radius:4px;background:rgba(56,189,248,.12);color:#38bdf8;border:1px solid rgba(56,189,248,.28);white-space:nowrap;display:inline-flex;align-items:center;gap:4px}
.code-editor-wrap{flex:1;min-height:300px;display:flex;flex-direction:column;background:#0d1117;position:relative}
.code-editor{flex:1;min-height:300px;height:100%;background:#0d1117;width:100%}
.monaco-host{width:100%;height:100%;min-height:300px;flex:1}
.editor-sheet textarea{background:#0d1117;color:#e6edf3;border:none;font-family:var(--font-mono);font-size:13px}

/* CodeMirror Dark Theme Default */
.CodeMirror{flex:1;min-height:280px;height:100%!important;font-size:13px;font-family:var(--font-mono);background:#0d1117!important;color:#e6edf3!important;line-height:1.6}
.CodeMirror-gutters{background:#0d1117!important;border-right:1px solid #21262d!important;padding-right:4px}
.CodeMirror-linenumber{color:#484f58!important;font-size:11.5px}
.CodeMirror-cursor{border-left:2px solid #58a6ff!important}
.CodeMirror-selected{background:rgba(56,139,253,.28)!important}
.CodeMirror-focused .CodeMirror-selected{background:rgba(56,139,253,.35)!important}
.CodeMirror-line::selection,.CodeMirror-line>span::selection,.CodeMirror-line>span>span::selection{background:rgba(56,139,253,.35)!important}
.CodeMirror-matchingbracket{background:rgba(56,139,253,.3)!important;outline:1px solid #58a6ff!important;color:#fff!important}
.CodeMirror-scroll::-webkit-scrollbar{width:8px;height:8px}
.CodeMirror-scroll::-webkit-scrollbar-thumb{background:#30363d;border:2px solid #0d1117;border-radius:3px}
.CodeMirror-scroll::-webkit-scrollbar-track{background:#0d1117}

/* Syntax Highlighting for Dark Code Area */
.CodeMirror .cm-keyword{color:#ff7b72!important;font-weight:600}
.CodeMirror .cm-def{color:#d2a8ff!important;font-weight:600}
.CodeMirror .cm-variable{color:#e6edf3!important}
.CodeMirror .cm-variable-2{color:#79c0ff!important}
.CodeMirror .cm-variable-3{color:#ffa657!important}
.CodeMirror .cm-property{color:#7ee787!important}
.CodeMirror .cm-operator{color:#ff7b72!important}
.CodeMirror .cm-string,.CodeMirror .cm-string-2{color:#a5d6ff!important}
.CodeMirror .cm-number{color:#79c0ff!important}
.CodeMirror .cm-comment{color:#8b949e!important;font-style:italic}
.CodeMirror .cm-builtin,.CodeMirror .cm-atom{color:#ffa657!important}
.CodeMirror .cm-meta{color:#d2a8ff!important}
.CodeMirror .cm-tag{color:#7ee787!important}
.CodeMirror .cm-attribute{color:#79c0ff!important}
.CodeMirror .cm-qualifier{color:#58a6ff!important}
.CodeMirror .cm-type{color:#79c0ff!important}
.CodeMirror .cm-bracket{color:#8b949e!important}
.CodeMirror .cm-header{color:#79c0ff!important}
.CodeMirror .cm-link{color:#a5d6ff!important;text-decoration:underline}
.CodeMirror .cm-error{background:rgba(248,81,73,.2)!important;color:#ff7b72!important}

/* Console Pane */
.console-pane{border-top:1px solid #30363d;display:flex;flex-direction:column;background:#0d1117;min-height:200px}
.console-toolbar{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;background:#161b22;border-bottom:1px solid #30363d}
.console-tabs{display:flex;gap:4px}
.console-tab{background:none;border:none;color:#8b949e;font-family:var(--font-ui),sans-serif;font-size:12px;font-weight:600;cursor:pointer;padding:5px 10px;border-radius:3px;transition:color .1s,background .1s}
.console-tab:hover{color:#c9d1d9}
.console-tab.active{background:#21262d;color:#e6edf3;font-weight:700}
.console-runtime-badge{font-family:var(--font-mono);font-size:10.5px;color:#8b949e}
.console-body{padding:12px 14px;overflow-y:auto;max-height:260px;background:#0d1117;color:#e6edf3;scrollbar-width:thin}
.console-case-card{display:flex;flex-direction:column;gap:8px;background:#161b22;border:1px solid #30363d;border-radius:4px;padding:12px 14px;margin-bottom:10px}
.ccc-head{font-family:var(--font-mono);font-size:11.5px;font-weight:700;color:#c9d1d9}
.ccc-row{display:grid;grid-template-columns:70px 1fr;gap:8px;font-family:var(--font-mono);font-size:11.5px;align-items:baseline}
.ccc-label{color:#8b949e;font-weight:600}
.ccc-row pre{margin:0;background:#0d1117;padding:4px 8px;border-radius:3px;color:#e6edf3;white-space:pre-wrap}
.run-output{padding:10px 12px;overflow:auto;max-height:260px;white-space:pre-wrap;font-family:var(--font-mono);font-size:12px;line-height:1.55;background:#0d1117;color:#c9d1d9}
.run-output::-webkit-scrollbar{width:8px;height:8px}
.run-output::-webkit-scrollbar-thumb{background:#30363d;border:2px solid #0d1117;border-radius:3px}
.frontend-preview{width:calc(100% - 20px);height:320px;background:#fff;border:1px solid #30363d;margin:10px}
.frontend-file-tabs{display:flex;gap:0;border:1px solid #30363d;border-radius:2px;overflow:hidden;background:#161b22}
.file-tab{background:#161b22;border:none;border-right:1px solid #30363d;color:#8b949e;font-family:var(--font-mono);font-size:11px;cursor:pointer;padding:4px 10px}
.file-tab:hover{color:#c9d1d9}
.file-tab.active{background:#21262d;color:#58a6ff;font-weight:600}

.cognizant-home-view{padding-bottom:48px}
.cognizant-round-ledger{display:grid;border:1px solid var(--line2)}
.cognizant-round-row{display:grid;grid-template-columns:40px 1fr auto 20px;gap:16px;align-items:center;text-align:left;background:var(--bg2);border:none;border-bottom:1px solid var(--line);padding:15px 18px;cursor:pointer;color:var(--ink);font:inherit;transition:background .1s}
.cognizant-round-row:last-child{border-bottom:none}
.cognizant-round-row:hover{background:var(--accent-dim)}
.round-row-number{font-family:var(--font-mono);font-size:11px;color:var(--ink3)}
.round-row-copy strong{display:block;font-size:14.5px}
.round-row-copy small{color:var(--ink2);font-size:12px}
.round-row-duration b{color:var(--ink);font-variant-numeric:tabular-nums}
.round-row-duration span{color:var(--ink3);font-size:10px;display:block;text-align:right}
.round-row-action{color:var(--ink3)}
.cognizant-footer{margin-top:40px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.cognizant-footer button{background:none;border:none;color:var(--ink2);font-size:12px;font-weight:600;cursor:pointer;padding:6px 0;text-decoration:underline;text-underline-offset:3px}
.cognizant-footer button:hover{color:var(--accent)}
.cognizant-section-view,.cognizant-round-view{padding-top:24px}
.section-head{margin:30px 0 18px}
.section-head h2{margin:0 0 3px;font-family:var(--font-serif);font-size:23px;font-weight:700;letter-spacing:-.01em}
.section-head p{margin:0;color:var(--ink2);font-size:12.5px}
.secnav{display:grid;border:1px solid var(--line2);margin:20px 0 10px}
.secnav-card{text-align:left;font:inherit;color:var(--ink);background:var(--bg2);border:none;border-bottom:1px solid var(--line);padding:12px 16px;cursor:pointer;display:block;width:100%;transition:background .1s}
.secnav-card:last-child{border-bottom:none}
.secnav-card:hover{background:var(--accent-dim)}
.secn-name{font-weight:700;font-size:13.5px;display:inline}
.secn-meta{color:var(--ink2);font-size:11.5px;display:block;margin-top:2px}
.secn-done{float:right;color:var(--ok);font-family:var(--font-mono);font-weight:700;font-size:11.5px;font-variant-numeric:tabular-nums}
.engine-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:22px 0 14px;flex-wrap:wrap}
.engine-progress{font-size:12px;color:var(--ink2);font-variant-numeric:tabular-nums}
.engine-progress b{color:var(--ok)}

.ai-task{background:var(--bg2);border:1px solid var(--line2);border-left:2px solid var(--line2);border-radius:2px;padding:22px 26px;margin-bottom:14px}
.ai-task h3{margin:0 0 8px;font-family:var(--font-serif);font-size:16.5px;font-weight:700}
.ai-task .acceptance{margin:14px 0;padding:11px 15px;background:var(--bg);border:1px solid var(--line);border-radius:2px}
.ai-task .acceptance h4{margin:0 0 5px;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2)}
.ai-task .acceptance ul{margin:0;padding-left:17px;color:var(--ink2);font-size:12.5px}
.ai-response textarea{min-height:110px;resize:vertical}
.recorder{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}
.recorder audio{max-width:280px}
.status-line{font-size:12px;color:var(--ink3)}
.grading-result{margin-top:14px;border-left:2px solid var(--accent);background:var(--bg);border-radius:0 2px 2px 0;padding:13px 16px;white-space:pre-wrap;font-size:13px;line-height:1.6}

.auth-dialog{border:1px solid var(--line2);border-radius:2px;background:var(--bg2);color:var(--ink);max-width:640px;width:94vw;box-shadow:8px 8px 0 rgba(0,0,0,.07)}
:root[data-theme="paper"] .auth-dialog::backdrop{background:rgba(60,50,30,.25)}
:root[data-theme="swiss"] .auth-dialog::backdrop,:root[data-theme="slate"] .auth-dialog::backdrop,:root[data-theme="terminal"] .auth-dialog::backdrop{background:rgba(0,0,0,.55)}
.auth-dialog-inner{padding:26px 30px}
.dialog-close{background:none;border:none;color:var(--ink3);font-size:20px;cursor:pointer;float:right;line-height:1}
.dialog-close:hover{color:var(--bad)}
.dialog-brand{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.auth-dialog h2{margin:0 0 10px;font-family:var(--font-serif);font-size:21px;font-weight:700;letter-spacing:-.01em}
.settings-copy{color:var(--ink2);font-size:12.5px}
.settings-tabs{display:flex;gap:0;margin:18px 0 0;border:1px solid var(--line2);border-radius:2px;overflow:hidden;width:max-content;max-width:100%}
.settings-tab{background:none;border:none;border-right:1px solid var(--line);color:var(--ink2);font-size:12px;font-weight:600;cursor:pointer;padding:8px 14px}
.settings-tab:last-child{border-right:none}
.settings-tab.active{background:var(--accent);color:var(--accent-ink)}
.settings-pane{display:grid;gap:11px;margin:16px 0;padding-top:16px}
.settings-pane label{display:grid;gap:4px;font-size:11px;font-weight:600;color:var(--ink2);letter-spacing:.04em;text-transform:uppercase}
.settings-note{font-size:11.5px;color:var(--ink3);border-top:1px solid var(--line);padding-top:12px}
.settings-actions{display:flex;gap:8px;margin-top:14px}
.access-gate-button,.purchase-button{background:var(--accent);border:1px solid var(--accent);color:var(--accent-ink);font-size:12.5px;font-weight:700;cursor:pointer;padding:10px 16px;border-radius:2px}
.purchase-button{background:var(--bg);border-color:var(--line2);color:var(--ink)}
.purchase-button:hover{border-color:var(--accent);color:var(--accent)}
#settingsStatus{font-size:12px;margin-top:10px;min-height:16px;color:var(--ink2)}
.stats-dialog{max-width:520px}
.stats-body{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin:16px 0;border-radius:2px;overflow:hidden}
.stat-line{display:flex;justify-content:space-between;align-items:center;background:var(--bg);padding:9px 14px;font-size:12.5px}
.stat-line b{color:var(--ok);font-variant-numeric:tabular-nums}
.or-oauth-box{display:grid;gap:14px;grid-template-columns:1fr auto;align-items:center;background:var(--bg);border:1px solid var(--accent);border-left:3px solid var(--accent);border-radius:2px;padding:15px 17px;margin:14px 0 4px}
.or-oauth-box.or-connected{border-color:var(--ok);border-left-color:var(--ok)}
.or-oauth-copy{display:grid;gap:2px}
.or-oauth-copy strong{font-size:14px}
.or-oauth-copy span{color:var(--ink2);font-size:12px;max-width:54ch}
.or-login-button{background:var(--accent);border:1px solid var(--accent);color:var(--accent-ink);font-size:12.5px;font-weight:700;cursor:pointer;padding:11px 18px;border-radius:2px;white-space:nowrap}
.or-login-button:hover{opacity:.88}
.or-login-button:disabled{opacity:.6;cursor:default}
.or-logout-button{background:none;border:1px solid var(--bad);color:var(--bad);font-size:12px;font-weight:600;cursor:pointer;padding:10px 16px;border-radius:2px;white-space:nowrap}
.or-divider{margin-top:10px;padding-top:12px;border-top:1px dashed var(--line2)}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(16px);background:var(--bg2);border:1px solid var(--accent);color:var(--ink);padding:10px 20px;font-size:12.5px;opacity:0;pointer-events:none;transition:opacity .16s,transform .16s;z-index:100;max-width:90vw;border-radius:2px}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ component enhancements: mobile rails & puzzles ============ */
.rail-mobile-toggle{display:none;width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:2px;padding:10px 14px;cursor:pointer;align-items:center;justify-content:space-between;color:var(--ink);font:inherit;margin-bottom:12px;transition:border-color .15s,background .15s}
.rail-mobile-toggle:hover{border-color:var(--accent);background:var(--bg3)}
.rmt-content{display:flex;align-items:baseline;gap:8px;min-width:0}
.rmt-title{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rmt-status{font-family:var(--font-mono);font-size:11px;color:var(--accent);font-variant-numeric:tabular-nums}
.rmt-action{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--ink2);white-space:nowrap}
.rmt-chevron{display:inline-block;transition:transform .2s ease;font-size:11px}
.rail-mobile-toggle[aria-expanded="true"] .rmt-chevron{transform:rotate(180deg)}
.rail-mobile-toggle[aria-expanded="true"]{border-color:var(--accent);background:var(--accent-dim)}

/* ---- touch controls & puzzle grids ---- */
.maze-touch-controls{display:none;flex-direction:column;align-items:center;gap:6px;margin:16px auto 10px;user-select:none;-webkit-user-select:none;touch-action:manipulation}
.maze-touch-row{display:flex;gap:6px}
.maze-touch-btn{width:56px;height:48px;background:var(--bg);border:1px solid var(--line2);color:var(--ink);font-size:16px;border-radius:2px;display:grid;place-items:center;cursor:pointer;touch-action:manipulation;transition:background .1s,border-color .1s,transform .06s}
.maze-touch-btn:hover{border-color:var(--accent);color:var(--accent)}
.maze-touch-btn:active{background:var(--accent);color:var(--accent-ink);transform:scale(.94)}
.maze-grid{justify-content:center;margin:14px auto;gap:4px;width:100%}
.path-grid{justify-content:center;margin:14px auto;gap:4px;width:100%}
.math-grid{justify-content:center;margin:14px auto;gap:8px;width:100%}

/* ============ section engines ============ */
/* ---- task list rail (prompt/speech engines) ---- */
.task-list{display:grid;gap:5px}
.task-item{display:grid;grid-template-columns:auto 1fr auto;gap:9px;align-items:center;text-align:left;font:inherit;font-size:12.5px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:2px;padding:8px 10px;cursor:pointer}
.task-item:hover{border-color:var(--ink3)}
.task-item.active{border-color:var(--accent);box-shadow:inset 2px 0 0 var(--accent)}
.task-item .ti-num{font-family:var(--font-mono);font-size:10.5px;color:var(--ink3);font-variant-numeric:tabular-nums}
.task-item .ti-copy{display:grid;gap:1px;min-width:0}
.task-item .ti-copy strong{font-size:12.5px;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.task-item .ti-copy small{color:var(--ink3);font-size:10px;text-transform:capitalize}
.task-item.done .secn-done{color:var(--ok)}

/* ---- prompt evaluator ---- */
.task-rubric{margin:0 0 16px;border:1px solid var(--line);border-left:2px solid var(--ink3);border-radius:2px;padding:11px 15px;background:var(--bg)}
.task-rubric h4{margin:0 0 6px;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2)}
.task-rubric ul{margin:0;padding-left:17px;color:var(--ink2);font-size:12.5px}
.task-hint{margin:0 0 16px;border:1px dashed var(--line2);border-radius:2px;padding:9px 13px}
.task-hint summary{font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);cursor:pointer}
.task-hint summary:hover{color:var(--accent)}
.task-hint p{margin:8px 0 0;font-size:12.5px;color:var(--ink2);line-height:1.6}
.prompt-evaluator{border:1px solid var(--line2);border-radius:2px;padding:18px 20px;background:var(--bg);margin:0 0 16px}
.prompt-evaluator-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:14px}
.prompt-evaluator-heading h3{margin:0;font-family:var(--font-serif);font-size:16px}
.prompt-evaluator-heading p{margin:2px 0 0;font-size:11.5px;color:var(--ink3)}
.prompt-evaluator-heading dl{margin:0;font-family:var(--font-mono);font-size:10.5px;text-align:right}
.prompt-evaluator-heading dt{color:var(--ink3);text-transform:uppercase;letter-spacing:.1em}
.prompt-evaluator-heading dd{margin:0;color:var(--accent);font-weight:700}
.prompt-submission{display:grid;gap:4px;font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3)}
.prompt-evaluator-actions{display:flex;align-items:center;gap:14px;margin-top:12px;flex-wrap:wrap}
.prompt-evaluator-actions>div:first-child{display:flex;align-items:baseline;gap:10px}
[data-prompt-count]{font-family:var(--font-mono);font-size:11.5px;color:var(--ink3);font-variant-numeric:tabular-nums}
[data-prompt-status]{margin:0;font-size:12px;color:var(--ink3)}
[data-prompt-status].is-error{color:var(--bad)}
.prompt-evaluator-actions .btn{margin-left:auto}
.prompt-feedback{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.prompt-feedback-summary{margin-bottom:8px}
.prompt-feedback-summary strong{font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}

/* ---- speech practice ---- */
.speech-practice{border:1px solid var(--line2);border-radius:2px;padding:22px;background:var(--bg)}
.speech-practice-stage{display:flex;align-items:center;gap:20px;margin-bottom:12px}
.speech-mic-button{width:58px;height:58px;border-radius:50%;border:2px solid var(--accent);background:var(--bg2);cursor:pointer;display:grid;place-items:center;padding:0;transition:background .12s;flex-shrink:0}
.speech-mic-button:hover{background:var(--accent-dim)}
.speech-mic-button[data-control-state="recording"]{background:var(--accent);border-color:var(--accent);animation:mic-pulse 1.2s infinite}
@keyframes mic-pulse{0%,100%{box-shadow:0 0 0 0 var(--accent-dim)}50%{box-shadow:0 0 0 9px var(--accent-dim)}}
.speech-mic-mark{position:relative;width:16px;height:28px}
.speech-mic-mark::before{content:"";position:absolute;top:0;left:2px;width:12px;height:20px;border:2px solid var(--accent);border-radius:8px}
.speech-mic-mark::after{content:"";position:absolute;bottom:0;left:0;width:16px;height:2px;background:var(--accent);box-shadow:0 -6px 0 var(--accent)}
.speech-practice-readout{display:grid;gap:2px}
.speech-practice-readout strong{font-size:13.5px}
.speech-practice-readout time{font-family:var(--font-mono);font-size:11px;color:var(--ink3);font-variant-numeric:tabular-nums}
.speech-practice-status{font-size:12.5px;color:var(--ink2);margin:0 0 10px}
.speech-practice-playback{margin-bottom:10px;max-width:340px;width:100%}
.speech-transcript{font-size:13px}

/* ---- problem sheet ---- */
.problem-meta{display:flex;gap:8px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.problem-meta span{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);border:1px solid var(--line);border-radius:2px;padding:2px 6px}
.problem-meta b{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);border-radius:2px;padding:2px 6px}
.problem-meta code{font-family:var(--font-mono);font-size:10px;color:var(--ink3)}
#cProblem h2{margin:0 0 10px;font-family:var(--font-serif);font-size:18px;font-weight:700;line-height:1.3}
#cProblem h2 span{color:var(--ink3)}
#cProblem h3{margin:16px 0 8px;font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.problem-prompt{white-space:pre-wrap;font-size:13.5px;line-height:1.62;margin:0 0 14px;font-family:var(--font-serif)}
.schema-line{display:flex;gap:10px;align-items:center;margin-bottom:14px;font-family:var(--font-mono);font-size:11px;flex-wrap:wrap}
.schema-line span{color:var(--ink3);text-transform:uppercase;letter-spacing:.1em;font-size:9.5px;font-weight:700}
.schema-line code{background:var(--bg3);border:1px solid var(--line);border-radius:2px;padding:2px 7px;color:var(--ink);word-break:break-all}
.problem-contract{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
.problem-contract>div{border:1px solid var(--line);border-radius:2px;padding:10px 13px;background:var(--bg2)}
.problem-contract strong{display:block;font-family:var(--font-mono);font-size:9.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);margin-bottom:4px}
.problem-contract p{margin:0;font-size:12px;line-height:1.55}
.problem-examples{display:grid;gap:10px;margin-bottom:4px}
.problem-example{border:1px solid var(--line);border-radius:2px;padding:10px 13px;background:var(--bg2)}
.problem-example strong{display:block;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);margin-bottom:6px}
.problem-example pre{margin:0;font-family:var(--font-mono);font-size:11.5px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}
.problem-example pre span{color:var(--ink3)}
.problem-example small{display:block;margin-top:5px;color:var(--ink2);font-size:11.5px}
.problem-constraints{margin:0;padding-left:17px;color:var(--ink2);font-size:12.5px}
.problem-constraints li{margin-bottom:3px}
.problem-approach{margin:14px 0 0;border:1px dashed var(--line2);border-radius:2px;padding:9px 13px}
.problem-approach summary{font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);cursor:pointer}
.problem-approach summary:hover{color:var(--accent)}
.problem-approach p{margin:8px 0 0;font-size:12.5px;color:var(--ink2);line-height:1.6}

.runner-note{font-size:11.5px;color:var(--ink3);margin:0 0 8px;font-family:var(--font-mono)}
.test-summary{border:1px solid var(--line2);border-radius:4px;padding:12px 16px;margin-bottom:12px;background:var(--bg3);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.test-summary.all-pass{border-color:rgba(46,160,67,.5);background:rgba(46,160,67,.08)}
.test-summary.all-pass strong{color:#3fb950;font-size:13.5px}
.test-summary.some-pass{border-color:rgba(210,153,34,.5);background:rgba(210,153,34,.08)}
.test-summary.some-pass strong{color:#d29922;font-size:13.5px}
.test-summary.none-pass{border-color:rgba(248,81,73,.5);background:rgba(248,81,73,.08)}
.test-summary.none-pass strong{color:#f85149;font-size:13.5px}
.test-summary.tle-pass{border-color:rgba(219,109,40,.5);background:rgba(219,109,40,.08)}
.test-summary.tle-pass strong{color:#db6d28;font-size:13.5px}
.test-summary strong{font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;display:flex;align-items:center;gap:6px}
.test-summary .summary-meta{font-family:var(--font-mono);font-size:11.5px;color:var(--ink2);display:inline-flex;align-items:center;gap:8px}

.test-results{display:grid;gap:10px}
.test-result-card{border:1px solid var(--line);border-radius:4px;background:#161b22;padding:12px 14px;display:flex;flex-direction:column;gap:8px}
.test-result-card.pass{border-left:3px solid #3fb950}
.test-result-card.wa{border-left:3px solid #f85149}
.test-result-card.re{border-left:3px solid #d29922}
.test-result-card.tle{border-left:3px solid #db6d28}

.tr-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tr-left{display:flex;align-items:center;gap:8px}
.tr-title{font-family:var(--font-mono);font-size:12px;font-weight:700;color:#c9d1d9}
.tr-time{font-family:var(--font-mono);font-size:11px;color:#8b949e}

.tr-badge{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 7px;border-radius:3px}
.tr-badge.pass{background:rgba(46,160,67,.18);color:#3fb950;border:1px solid rgba(46,160,67,.4)}
.tr-badge.wa{background:rgba(248,81,73,.18);color:#f85149;border:1px solid rgba(248,81,73,.4)}
.tr-badge.re{background:rgba(210,153,34,.18);color:#d29922;border:1px solid rgba(210,153,34,.4)}
.tr-badge.tle{background:rgba(219,109,40,.18);color:#db6d28;border:1px solid rgba(219,109,40,.4)}
.tr-badge.hidden{background:rgba(139,148,158,.15);color:#8b949e;border:1px solid rgba(139,148,158,.3)}

.tr-details{display:grid;gap:6px;margin-top:4px}
.tr-row{display:grid;grid-template-columns:70px 1fr;gap:8px;font-family:var(--font-mono);font-size:11.5px;align-items:baseline}
.tr-row.full{grid-template-columns:1fr}
.tr-label{color:#8b949e;font-weight:600}
.tr-row pre{margin:0;background:#0d1117;padding:5px 8px;border-radius:3px;color:#e6edf3;white-space:pre-wrap;font-family:var(--font-mono);font-size:11.5px;max-height:160px;overflow-y:auto;border:1px solid #21262d}
.tr-row pre.diff-bad{color:#f85149;border-color:rgba(248,81,73,.3)}
.tr-row pre.diff-good{color:#3fb950;border-color:rgba(46,160,67,.3)}
.tr-row pre.diff-err{color:#d29922;border-color:rgba(210,153,34,.3)}
.tr-hidden-note{font-family:var(--font-mono);font-size:11px;color:#8b949e;font-style:italic;padding:4px 0}

/* Console Raw Logs Output */
.console-raw-logs{background:#090d13;color:#c9d1d9;font-family:var(--font-mono);font-size:12px;line-height:1.5;padding:12px;border-radius:4px;border:1px solid #30363d;white-space:pre-wrap;max-height:260px;overflow-y:auto}
.console-raw-logs .log-err{color:#f85149}
.console-raw-logs .log-time{color:#8b949e;font-size:11px;margin-bottom:6px;display:block}

/* Custom Input Card */
.custom-test-card{background:#161b22;border:1px solid #30363d;border-radius:4px;padding:12px;margin-top:14px;display:flex;flex-direction:column;gap:8px}
.custom-test-card h4{margin:0;font-family:var(--font-mono);font-size:12px;font-weight:700;color:#c9d1d9}
.custom-test-card textarea{background:#0d1117;color:#e6edf3;border:1px solid #30363d;border-radius:3px;padding:6px 8px;font-family:var(--font-mono);font-size:12px;resize:vertical;min-height:60px}
.btn-custom-run{align-self:flex-start;font-family:var(--font-ui),sans-serif;font-size:11.5px;font-weight:600;padding:5px 12px;border-radius:3px;border:1px solid #388bfd;background:#1f6feb;color:#fff;cursor:pointer}
.btn-custom-run:hover{background:#388bfd}

.sql-output{margin:10px 0 0;font-family:var(--font-mono);font-size:11.5px;white-space:pre-wrap;border:1px solid var(--line);border-radius:2px;padding:10px 12px;background:var(--bg)}

/* ============ tablet / intermediate screens (<= 960px) ============ */
@media (max-width:960px){
  .company-stage{grid-template-columns:1fr;gap:32px;padding-top:28px}
  .page-head{flex-direction:column;align-items:flex-start;gap:10px;margin:28px 0 18px}
  .mcq-workbench{grid-template-columns:1fr;gap:16px}
  .mcq-palette{position:static;max-height:none}
  .palette-grid-container{max-height:200px}
  .coding-workbench{grid-template-columns:1fr;min-height:auto}
  .coding-rail{border-right:none;border-bottom:1px solid var(--line)}
  .coding-rail-list{max-height:160px}
  .problem-pane{border-right:none;border-bottom:1px solid var(--line)}
  .crumbs{display:none}
  .site-shell{padding:0 16px 64px}
}

/* ============ mobile phones (<= 768px) ============ */
@media (max-width:768px){
  /* Prevent flex/grid content from widening the viewport on narrow devices. */
  .site-shell,.main-content,.company-stage,.mcq-workbench,.coding-workbench,.question-card,.mcq-question-sheet,.section-engine-sheet{min-width:0;max-width:100%}
  .mcq-question-strip-container,.palette-grid-container{overscroll-behavior-x:contain;touch-action:pan-y}
  .mcq-question-strip,.coding-category-nav{overscroll-behavior-x:contain;touch-action:pan-x;scroll-behavior:auto}
  .site-shell{padding:0 12px 56px;padding-left:max(12px, env(safe-area-inset-left));padding-right:max(12px, env(safe-area-inset-right))}

  /* topbar: compact, smooth scrolling */
  .topbar{gap:8px;height:48px;padding:0 4px;min-width:0}
  .topbar-actions{min-width:0;max-width:calc(100vw - 92px)}
  /* Social icons are useful on desktop, but crowd the account/theme controls
     on phones. The links remain available in the footer and no core action is
     hidden behind a horizontal scroll. */
  .topbar-actions .social-links{display:none}
  .brand-word{font-size:16px}
  .offline-badge{display:none}
  .topbar-actions{height:48px;gap:5px}
  .icon-button,.settings-button,.theme-button{font-size:11px;padding:5px 8px;min-height:30px}
  .icon-button .n{display:inline}
  .theme-pop{right:0;min-width:190px;max-width:92vw}

  /* hero & ledger */
  .company-stage{padding-top:18px;gap:22px}
  .company-view h1{font-size:clamp(24px,7vw,32px)}
  .company-summary{font-size:13.5px}
  .page-head h1,.page-summary{max-width:none}
  .company-route{grid-template-columns:30px 1fr 18px;padding:12px 14px;gap:10px}
  .company-route-name{font-size:14px}
  .company-route-meta{font-size:11.5px}
  .section-row{grid-template-columns:1fr auto 18px;padding:13px 14px;gap:10px}
  .section-number{display:none}
  .section-status{font-size:11px}
  .cognizant-round-row{grid-template-columns:1fr auto 18px;padding:13px 14px;gap:10px}
  .round-row-number{display:none}
  .round-row-duration{font-size:11.5px;text-align:right}
  .trial-row{grid-template-columns:1fr auto;padding:13px 14px;gap:10px}
  .trial-number{display:none}
  .trial-data strong{font-size:12.5px}
  .trial-data span{font-size:10px}
  .launch-button{padding:8px 13px;font-size:12px}

  /* top nav & horizontal strip */
  .mcq-top-nav{padding:12px 12px;gap:10px}
  .mcq-selectors-row{gap:8px}
  .msf-select{font-size:12.5px;padding:7px 8px}
  .q-strip-btn{flex:0 0 40px;width:40px;height:40px;font-size:12.5px}
  .mcq-strip-toolbar{gap:8px}
  .mcq-strip-search{flex:1 1 110px;max-width:none}

  /* question sheet */
  .mcq-question-sheet,.section-engine-sheet{padding:16px 14px;min-height:auto}
  .q-card-head,.q-actions-bar,.q-tags{min-width:0;max-width:100%}
  .q-actions-bar{margin-left:0;flex-wrap:wrap;gap:6px}
  .question-report-inner{padding:20px 16px}
  .question-report-dialog{width:calc(100% - 1rem);max-height:90vh}
  .question-prompt,.explanation-body,.answer-option{min-width:0;overflow-wrap:anywhere}
  .mcq-prompt,.question-prompt{font-size:14.5px;line-height:1.55}
  .question-title{font-size:17px}
  .option,.answer-option{padding:12px 13px;font-size:13.5px;min-height:44px}
  .answer-actions{gap:8px;align-items:center}
  .answer-actions .btn{padding:9px 14px;font-size:12.5px}
  .question-pagination{flex-wrap:wrap;gap:8px;padding-top:14px}
  .question-pagination button{flex:1 1 90px;padding:8px 12px;background:var(--bg);border:1px solid var(--line);border-radius:2px;text-align:center}
  .question-pagination span{width:100%;text-align:center;order:-1;margin-bottom:2px}

  /* coding workbench */
  .code-editor{min-height:220px;height:260px}
  .CodeMirror{font-size:12px}
  .problem-sheet{padding:14px;max-height:260px}
  .run-output{max-height:200px;font-size:11.5px}
  .frontend-preview{height:240px;width:calc(100% - 16px);margin:8px}
  .coding-appbar{gap:8px;margin:18px 0 12px}
  .coding-category-nav{overflow-x:auto;max-width:100%}
  .coding-category-nav button{padding:6px 11px;font-size:11.5px;white-space:nowrap}
  .cq-item{font-size:12px;padding:8px 10px}
  .problem-contract{grid-template-columns:1fr}

  /* dialogs */
  .auth-dialog{width:94vw;max-width:min(540px,94vw);margin:auto;max-height:86vh;overflow-y:auto}
  .auth-dialog-inner{padding:18px 16px}
  .or-oauth-box{grid-template-columns:1fr;padding:12px 14px}
  .or-login-button,.or-logout-button{width:100%}
  .settings-tabs{width:100%}
  .settings-tab{flex:1;padding:8px 6px;font-size:11px;text-align:center}
  .settings-actions{flex-wrap:wrap;gap:6px}
  .settings-actions button,.settings-actions label{flex:1 1 110px;text-align:center;justify-content:center}
  .stat-line{font-size:12px;flex-wrap:wrap;gap:4px}

  /* AI tasks */
  .prompt-evaluator{padding:14px 12px}
  .prompt-evaluator-heading{flex-direction:column;gap:6px}
  .prompt-evaluator-heading dl{text-align:left}
  .prompt-evaluator-actions{flex-direction:column;align-items:stretch;gap:10px}
  .prompt-evaluator-actions .btn{margin-left:0;width:100%}
  .prompt-evaluator-actions>div:first-child{justify-content:space-between}
  .speech-practice{padding:16px 12px}
  .speech-practice-stage{gap:14px}
  .speech-mic-button{width:54px;height:54px}
  .answer-explanation,.grading-result{font-size:12.5px;padding:10px 12px}

  /* games & puzzles */
  .cell-btn{font-size:13px}
  .game-mount{padding:16px 12px;min-height:auto}
  .game-header{margin:14px 0 10px;gap:8px}
  .difficulty-control{margin-left:0;width:100%;justify-content:center}
  .difficulty-control button{flex:1;padding:6px 8px;font-size:11.5px}
  .game-hud{gap:10px;font-size:11.5px}
  .maze-touch-controls{display:flex}
  .math-card{padding:12px 8px;min-width:70px}
  .math-card b{font-size:17px}
  .path-tile svg path{stroke-width:8}

  /* footers */
  .company-footer,.cognizant-footer{margin-top:24px}

  /* Profile and auth surfaces share the same compact card language as the
     practice UI and never exceed the viewport width. */
  .oa-auth-page{min-height:calc(100svh - 48px);padding:12px 0;align-items:start}
  .oa-auth-card{width:100%;max-width:460px;padding:1.25rem 1rem;box-shadow:0 8px 20px rgba(0,0,0,.14)}
  .oa-auth-card h1{font-size:clamp(21px,6vw,28px);line-height:1.15}
  .oa-auth-card p{font-size:13px}
  .oa-dashboard{width:100%;max-width:100%;overflow:hidden}
  .oa-profile-head{width:100%}
  .oa-stats,.oa-panels,.oa-panel{min-width:0;max-width:100%}
  .oa-trend{gap:.25rem}
  .oa-topic-row{grid-template-columns:minmax(58px,80px) minmax(0,1fr) 25px}
  .oa-heatmap{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain}
}

/* ============ extra small phones (<= 420px) ============ */
@media (max-width:420px){
  .brand-word em{display:none}
  .brand-word{font-size:15px}
  .icon-button,.settings-button,.theme-button{font-size:10px;padding:5px 7px}
  .company-view h1{font-size:23px}
  .q-strip-btn{flex:0 0 38px;width:38px;height:38px;font-size:12px}
  .mcq-selectors-row{gap:6px}
  .msf-select{font-size:11.5px;padding:6px 6px}
  .coding-app-title strong{font-size:15px}
  .math-card b{font-size:15px}
}

@media (pointer:coarse){
  .btn,.launch-button,.option,.answer-option,.file-tab,.q-strip-btn{touch-action:manipulation}
  .q-strip-btn{min-height:38px}
}

/* Markdown table & formatting styles */
.question-prompt table, .explanation-body table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13.5px; }
.question-prompt th, .explanation-body th, .question-prompt td, .explanation-body td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.question-prompt th, .explanation-body th { background: var(--bg2); font-weight: 600; color: var(--ink); }
.question-prompt td, .explanation-body td { background: var(--bg); color: var(--ink2); }
.question-prompt pre, .explanation-body pre { background: var(--bg2); padding: 12px; border-radius: 4px; border: 1px solid var(--line); overflow-x: auto; margin: 12px 0; }
.question-prompt code, .explanation-body code { font-family: var(--font-mono); font-size: 13px; color: var(--ink); }
.question-prompt pre code, .explanation-body pre code { color: var(--ink2); background: transparent; padding: 0; }
.question-prompt p, .explanation-body p { margin-bottom: 8px; }

/* question figures + graceful missing-image fallback */
.question-prompt img, .explanation-body img, .prose img { max-width: 100%; height: auto; border-radius: 4px; border: 1px solid var(--line); }
.img-missing { border: 1px dashed var(--line2) !important; border-radius: 4px; padding: 14px 16px; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink3); }
.img-missing::before { content: "◻ " attr(data-missing-alt); letter-spacing: .02em; }
.img-missing img { display: none; }

/* ================= static pages (build.js output) ================= */
.static-page { max-width: 780px; margin: 0 auto; padding: 24px 20px 60px; }
/* question pages: workbench layout takes over (palette + sheet), widen the shell */
.static-page.question-page { max-width: none; padding: 24px 0 60px; }
.qp-sheet { background: var(--bg2); border: 1px solid var(--line2); padding: 26px 30px; min-height: 420px; border-radius: 4px; }
.static-page .page-head h1 { font-size: 30px; margin: 8px 0 4px; letter-spacing: -0.01em; }
.static-page .page-head > p, .static-lede { color: var(--ink2); font-size: 15px; line-height: 1.6; margin: 0 0 6px; }
.static-page .page-head h1 + p { margin-top: 6px; }
.static-lede { margin-bottom: 22px !important; }
.static-foot { max-width: 780px; margin: 0 auto; padding: 18px 20px 40px; border-top: 1px solid var(--line); display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--ink2); }
.static-foot a { color: var(--ink2); text-decoration: none; }
.static-foot a:hover { color: var(--ink); text-decoration: underline; }
.qlist { list-style: none; margin: 14px 0 22px; padding: 0; }
.qlist.numbered { counter-reset: qn; }
.qlist.numbered li { counter-increment: qn; position: relative; padding: 12px 0 12px 46px; border-bottom: 1px solid var(--line); }
.qlist.numbered li::before { content: counter(qn); position: absolute; left: 0; top: 12px; width: 30px; height: 30px; border-radius: 4px; background: var(--bg2); color: var(--ink2); font-family: var(--font-mono); font-size: 13px; display: flex; align-items: center; justify-content: center; }
.qlist a { color: var(--ink); text-decoration: none; display: block; }
.qlist a:hover { color: var(--accent); }
.qlist-meta { display: block; font-size: 12px; color: var(--ink2); margin-top: 2px; }
.qlist-tag { display: inline-block; font-size: 11px; font-weight: 700; padding: 1px 6px; border-radius: 3px; background: var(--bg2); color: var(--ink2); margin-right: 6px; }
.topic-line { font-size: 13px; color: var(--ink2); margin: 4px 0 18px; }
.practice-cta { margin: 26px 0 8px; }
.practice-cta .btn { padding: 10px 18px; font-size: 15px; }
#practiceMount { margin-top: 18px; }
.sibling-nav { margin: 34px 0 0; padding-top: 18px; border-top: 1px solid var(--line); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.sibling-nav a { color: var(--ink); text-decoration: none; padding: 8px 14px; border: 1px solid var(--line); border-radius: 6px; font-size: 13px; }
.sibling-nav a:hover { border-color: var(--accent); color: var(--accent); }
.sibling-nav .sn-cap { width: 100%; font-size: 12px; color: var(--ink2); text-transform: uppercase; letter-spacing: 0.04em; }
.question-pagination { display: flex; align-items: center; gap: 10px; margin-top: 26px; font-size: 14px; }
.question-pagination a { color: var(--ink); text-decoration: none; padding: 8px 14px; border: 1px solid var(--line); border-radius: 6px; }
.question-pagination a:hover { border-color: var(--accent); color: var(--accent); }
.question-pagination .pg-mid { color: var(--ink2); font-size: 13px; margin: 0 auto; }
.qa-reveal { margin-top: 20px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.qa-reveal summary { cursor: pointer; padding: 13px 16px; font-weight: 600; color: var(--ink); list-style: none; }
.qa-reveal summary::-webkit-details-marker { display: none; }
.qa-reveal summary::before { content: '▸ '; color: var(--ink2); }
.qa-reveal[open] summary::before { content: '▾ '; }
.qa-reveal .answer-explanation { padding: 0 16px 16px; }
.answer-status { font-size: 13px; margin-left: auto; }
.answer-status.ok { color: #1a7f37; }
.answer-status.bad { color: #b42318; }
/* editorial sections index (shared by the in-app track view & static company pages) */
.sec-index { margin: 26px 0 10px; }
.sec-index-label { font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--ink3); margin: 0 0 10px; }
.sec-index-row { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto auto; grid-template-areas: "idx body count arrow"; align-items: center; column-gap: 18px; padding: 16px 4px; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--line); transition: background .12s; }
.sec-index-row:first-of-type { border-top: 1px solid var(--line); }
.sec-index-row:hover { background: var(--accent-dim); }
.sec-idx { grid-area: idx; font-family: var(--font-mono); font-size: 12px; font-weight: 600; color: var(--ink3); font-variant-numeric: tabular-nums; }
.sec-index-body { grid-area: body; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.sec-index-title { font-family: var(--font-serif); font-size: 18px; font-weight: 700; letter-spacing: -.008em; line-height: 1.2; }
.sec-index-cats { font-size: 12px; color: var(--ink2); line-height: 1.45; }
.sec-index-count { grid-area: count; font-family: var(--font-mono); font-size: 11px; color: var(--ink2); font-variant-numeric: tabular-nums; white-space: nowrap; padding-top: 14px; align-self: end; }
.sec-index-arrow { grid-area: arrow; font-size: 15px; color: var(--ink3); opacity: 0; transform: translateX(-6px); transition: opacity .15s, transform .15s, color .15s; align-self: end; padding-bottom: 1px; }
.sec-index-row:hover .sec-index-arrow { opacity: 1; transform: translateX(0); color: var(--accent); }
.sec-index-done { font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; color: var(--ok); white-space: nowrap; align-self: end; padding-bottom: 2px; }
@media (max-width: 560px) {
  .sec-index-row { grid-template-columns: 34px minmax(0, 1fr) auto; grid-template-areas: "idx body arrow"; column-gap: 12px; row-gap: 2px; padding: 13px 2px; }
  .sec-index-count { grid-area: body; align-self: start; padding-top: 0; order: 3; }
  .sec-index-done { grid-area: body; align-self: start; }
  .sec-index-title { font-size: 16px; }
  .sec-index-arrow { align-self: center; }
}
.related { margin-top: 26px; }
.related .related-more { display: inline-block; margin-top: 8px; color: var(--accent); font-size: 13px; text-decoration: none; }
.sample-test { margin: 16px 0; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.sample-test .st-head { background: var(--bg2); padding: 8px 12px; font-size: 12px; color: var(--ink2); font-weight: 600; }
.sample-test pre { margin: 0; padding: 12px; background: var(--bg); overflow-x: auto; font-size: 13px; }
.sample-test .st-exp { color: var(--ink2); padding: 6px 12px; font-size: 12px; border-top: 1px solid var(--line); }
.crumbs a { color: var(--ink); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
a.brand-button { text-decoration: none; }