:root{--bg: #0b1220;--panel: #121c30;--panel-2: #0f1830;--ink: #e6ecf5;--muted: #9aa8bf;--accent: #f5c451;--accent-2: #4ade80;--danger: #f87171;--blue: #5b8def;--red: #ef6a5b;--radius: 14px;--shadow: 0 10px 30px rgba(0, 0, 0, .35);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:radial-gradient(1200px 500px at 80% -10%,rgba(245,196,81,.08),transparent 60%),radial-gradient(900px 500px at -10% 10%,rgba(91,141,239,.1),transparent 55%),var(--bg);color:var(--ink);font-family:Inter,Segoe UI,system-ui,sans-serif;line-height:1.55;min-height:100vh}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#111;padding:8px 14px;border-radius:0 0 8px;z-index:50}.skip-link:focus{left:0}.site-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 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6px;letter-spacing:-.02em}.hero .hook{font-size:clamp(1.05rem,2.6vw,1.35rem);color:var(--accent);font-weight:600;margin:0 auto 10px;max-width:620px}.hero .sub{color:var(--muted);max-width:600px;margin:0 auto 26px}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#1a1205;font-weight:700;border:none;border-radius:12px;padding:13px 22px;font-size:1rem;cursor:pointer;box-shadow:0 6px 18px #f5c45140;text-decoration:none}.btn:hover{filter:brightness(1.08)}.btn.secondary{background:transparent;color:var(--ink);border:1px solid rgba(148,163,184,.4);box-shadow:none}.btn.danger{background:var(--danger);color:#2a0703}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:8px}.panel{background:var(--panel);border:1px solid rgba(148,163,184,.16);border-radius:var(--radius);padding:clamp(16px,3vw,28px);box-shadow:var(--shadow);margin-bottom:20px}.panel h2{margin-top:0;font-size:1.4rem}.panel h3{margin:18px 0 8px}.kicker{color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:.72rem}.lede{color:var(--muted)}.sample-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:8px;margin:14px 0}.sample-grid canvas{width:100%;height:auto;border-radius:8px;border:1px solid rgba(148,163,184,.25);image-rendering:pixelated}.stat-row{display:flex;gap:14px;flex-wrap:wrap;margin:10px 0}.stat{flex:1 1 120px;background:var(--panel-2);border:1px solid rgba(148,163,184,.15);border-radius:10px;padding:10px 14px}.stat .num{font-size:1.5rem;font-weight:800;font-variant-numeric:tabular-nums}.stat .lbl{font-size:.78rem;color:var(--muted)}.stat.warn .num{color:var(--danger)}.stat.good .num{color:var(--accent-2)}.chart-wrap{background:var(--panel-2);border-radius:10px;padding:10px}.chart-wrap canvas{width:100%;display:block}.progress{height:8px;background:#94a3b833;border-radius:999px;overflow:hidden;margin-top:10px}.progress>div{height:100%;background:var(--accent);width:0%;transition:width .2s}.exam-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.exam-card{background:var(--panel-2);border:1px solid rgba(148,163,184,.18);border-radius:12px;padding:18px;text-align:center}.exam-card .big{font-size:2.3rem;font-weight:800;font-variant-numeric:tabular-nums}.exam-card .name{font-weight:700}.exam-card .desc{font-size:.82rem;color:var(--muted)}.exam-card.bad{border-color:#f871718c}.exam-card.bad .big{color:var(--danger)}.exam-card.good .big{color:var(--accent-2)}.heatmap-wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:flex-start}.heatmap-wrap canvas{border-radius:10px;image-rendering:pixelated;max-width:320px;width:100%}.legend{font-size:.82rem;color:var(--muted)}.legend .sw{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-1px}.quiz-options{display:grid;gap:10px;margin-top:12px}.quiz-options .btn{justify-content:flex-start}.slider-field{margin:14px 0}.slider-field label{display:flex;justify-content:space-between;font-weight:600}.slider-field input[type=range]{width:100%;accent-color:var(--accent)}.slider-field .hint{font-size:.8rem;color:var(--muted)}.budget-bar{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--muted)}table.results{width:100%;border-collapse:collapse;font-size:.88rem}table.results th,table.results td{padding:7px 9px;text-align:right;border-bottom:1px solid rgba(148,163,184,.14)}table.results th:first-child,table.results td:first-child{text-align:left}table.results th{color:var(--muted);font-weight:600}.gate-pass{color:var(--accent-2);font-weight:700}.gate-fail{color:var(--danger);font-weight:700}.note{border-left:3px solid var(--accent);background:#f5c45112;padding:10px 14px;border-radius:0 10px 10px 0;color:var(--muted);font-size:.9rem}body.demo-mode{display:flex;flex-direction:column;height:100vh;overflow:hidden}body.demo-mode #app{flex:1 1 auto;min-height:0;overflow-y:auto}body.demo-mode .site-footer{display:none}body.demo-mode .site-header{position:static}.caption-bar{flex:0 0 auto;background:#05080ff5;border-top:1px solid rgba(245,196,81,.4);color:#fff;padding:12px 22px;text-align:center}.caption-bar #caption-text{font-size:clamp(1rem,2.4vw,1.35rem);font-weight:600}.caption-bar .demo-note{margin-top:6px;font-size:.78rem;font-weight:400;color:var(--muted)}.site-footer{border-top:1px solid rgba(148,163,184,.15);color:var(--muted);font-size:.82rem;padding:18px clamp(14px,4vw,40px) 30px;text-align:center}.site-footer a{color:var(--accent)}.cite{color:var(--muted);font-size:.85rem}.cite a{color:var(--blue)}@media(max-width:700px){.exam-grid{grid-template-columns:1fr}.hero .hans{width:220px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important}}