:root{--violet:#a78bfa;--violet-deep:#7c5cfc;--cyan:#22d3ee;--mint:#6ee7b7;--orange:#fdba74;--pink:#f472b6;--danger:#fb7185;--success:#34d399;--bg:#0b0b12;--bg-elevated:#12121c;--bg-card:#161622;--bg-soft:#1c1c2a;--bg-input:#101018;--border:#ffffff14;--border-strong:#ffffff24;--text:#f4f2ff;--text-muted:#9b97b0;--text-dim:#6b6780;--shadow:0 12px 40px #00000073;--glow-violet:0 0 40px #a78bfa40;--glow-cyan:0 0 32px #22d3ee33;--nav-bg:#0b0b12d1;--overlay:#05050ca6;--gradient-brand:linear-gradient(135deg, #a78bfa 0%, #22d3ee 55%, #6ee7b7 100%);--gradient-card:linear-gradient(160deg, #a78bfa1f, #22d3ee0d);--gradient-cta:linear-gradient(135deg, #7c5cfc, #22d3ee);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-top:env(safe-area-inset-top,0px);--radius-sm:10px;--radius:16px;--radius-lg:22px;--radius-xl:28px;--radius-full:999px;--font:"Outfit", system-ui, -apple-system, sans-serif;--mono:"JetBrains Mono", ui-monospace, monospace;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--nav-h:68px;--ease:cubic-bezier(.22, 1, .36, 1);--tap:44px}[data-theme=light]{--bg:#f6f5ff;--bg-elevated:#fff;--bg-card:#fff;--bg-soft:#eeeafb;--bg-input:#f3f1fc;--border:#281e5014;--border-strong:#281e5024;--text:#151226;--text-muted:#5c5870;--text-dim:#8a86a0;--shadow:0 12px 36px #503c8c1f;--glow-violet:0 0 32px #7c5cfc2e;--nav-bg:#f6f5ffdb;--overlay:#14102866;--gradient-card:linear-gradient(160deg, #a78bfa29, #22d3ee14)}*,:before,:after{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;text-rendering:optimizelegibility;margin:0;padding:0;font-size:16px;line-height:1.45}body{min-height:100dvh;overflow-x:hidden}#app{min-height:100dvh}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer;background:0 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floatY{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.app-shell{min-height:100dvh;padding-bottom:calc(var(--nav-h) + var(--safe-bottom) + 12px)}.app-shell.no-nav{padding-bottom:var(--safe-bottom)}.page{width:min(560px,100%);padding:calc(16px + var(--safe-top)) 16px 24px;animation:pageIn .35s var(--ease);margin:0 auto}.page-wide{width:min(720px,100%)}@keyframes pageIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.page-header{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px;display:flex}.page-title{letter-spacing:-.03em;margin:0;font-size:1.65rem;font-weight:800;line-height:1.15}.page-sub{color:var(--text-muted);margin:6px 0 0;font-size:.95rem}.gradient-text{background:var(--gradient-brand);color:#0000;-webkit-background-clip:text;background-clip:text}.muted{color:var(--text-muted)}.dim{color:var(--text-dim)}.mono{font-family:var(--mono);font-size:.9em}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:16px}.card-glow{background:var(--gradient-card), var(--bg-card);border:1px solid var(--border-strong)}.card-press{transition:transform .18s var(--ease), border-color .18s}.card-press:active{transform:scale(.985)}.btn{min-height:var(--tap);border-radius:var(--radius-full);transition:transform .15s var(--ease), opacity .15s, box-shadow .2s;-webkit-user-select:none;user-select:none;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:0 18px;font-size:.95rem;font-weight:600;display:inline-flex}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;pointer-events:none}.btn-primary{background:var(--gradient-cta);color:#0b0b12;box-shadow:var(--glow-violet)}.btn-primary:hover{box-shadow:0 0 28px #22d3ee59}.btn-secondary{background:var(--bg-soft);border-color:var(--border);color:var(--text)}.btn-ghost{color:var(--text-muted);background:0 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16px;font-size:.92rem;font-weight:600}.toast.success{color:var(--success);border-color:#34d39966}.toast.error{color:var(--danger);border-color:#fb718566}.toast.info{color:var(--cyan);border-color:#22d3ee59}@keyframes toastIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}.offline-pill{top:calc(10px + var(--safe-top));z-index:80;border-radius:var(--radius-full);color:var(--orange);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fdba7426;border:1px solid #fdba7466;padding:6px 12px;font-size:.78rem;font-weight:700;position:fixed;left:50%;transform:translate(-50%)}.auth-page{min-height:100dvh;padding:28px 18px calc(28px + var(--safe-bottom));align-content:center;width:min(420px,100%);margin:0 auto;display:grid;position:relative}.auth-page:before{content:"";pointer-events:none;z-index:-1;background:radial-gradient(70% 40% at 20% 0,#7c5cfc47,#0000 60%),radial-gradient(60% 35% at 90% 20%,#22d3ee2e,#0000 55%),radial-gradient(50% 30% at 50% 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.value.violet{color:var(--violet)}.stat-pill .value.cyan{color:var(--cyan)}.stat-pill .value.mint{color:var(--mint)}.stat-pill .value.orange{color:var(--orange)}.section-title{justify-content:space-between;align-items:center;margin:8px 0 12px;display:flex}.section-title h2{margin:0;font-size:1.05rem;font-weight:700}.snippet-row{gap:10px;display:grid}.snippet-item{border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--border);text-align:left;transition:border-color .15s, transform .15s var(--ease);grid-template-columns:1fr auto;align-items:start;gap:10px;padding:14px;display:grid}.snippet-item:hover{border-color:#a78bfa59}.snippet-item h3{margin:0 0 4px;font-size:1rem;font-weight:700}.snippet-item p{color:var(--text-muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0;font-size:.88rem;display:-webkit-box;overflow:hidden}.badge{border-radius:var(--radius-full);background:var(--bg-soft);color:var(--text-muted);align-items:center;padding:4px 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var(--bg-card);border:1px solid var(--border-strong);min-height:320px;box-shadow:var(--shadow);transition:transform .25s var(--ease);flex-direction:column;flex:1;justify-content:center;padding:24px 20px;display:flex;position:relative;overflow:hidden}.flash-card.flip-out{animation:cardOut .28s var(--ease) forwards}.flash-card.flip-in{animation:cardIn .32s var(--ease)}@keyframes cardOut{to{opacity:0;transform:translate(-24px)scale(.98)}}@keyframes cardIn{0%{opacity:0;transform:translate(24px)scale(.98)}to{opacity:1;transform:none}}.flash-label{text-transform:uppercase;letter-spacing:.08em;color:var(--cyan);margin-bottom:12px;font-size:.78rem;font-weight:700}.flash-title{letter-spacing:-.03em;margin:0;font-size:1.55rem;font-weight:800;line-height:1.2}.challenge-head{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px;display:flex}.challenge-pill{border-radius:var(--radius-full);color:var(--cyan);background:#22d3ee1f;border:1px solid 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#2563eb47}html[data-layout=ember]{--violet:#fb923c;--violet-deep:#ea580c;--cyan:#fbbf24;--mint:#fdba74;--orange:#f87171;--gradient-brand:linear-gradient(135deg, #ea580c 0%, #fbbf24 55%, #f87171 100%);--gradient-cta:linear-gradient(135deg, #c2410c, #f59e0b);--gradient-card:linear-gradient(160deg, #ea580c24, #fbbf240f);--glow-violet:0 0 40px #ea580c47}html[data-layout=forest]{--violet:#4ade80;--violet-deep:#16a34a;--cyan:#34d399;--mint:#a3e635;--orange:#86efac;--gradient-brand:linear-gradient(135deg, #16a34a 0%, #34d399 55%, #a3e635 100%);--gradient-cta:linear-gradient(135deg, #15803d, #10b981);--gradient-card:linear-gradient(160deg, #16a34a24, #34d3990f);--glow-violet:0 0 40px #16a34a47}html[data-layout=mono]{--violet:#e5e7eb;--violet-deep:#9ca3af;--cyan:#d1d5db;--mint:#f3f4f6;--orange:#9ca3af;--gradient-brand:linear-gradient(135deg, #9ca3af 0%, #e5e7eb 50%, #6b7280 100%);--gradient-cta:linear-gradient(135deg, #6b7280, #d1d5db);--gradient-card:linear-gradient(160deg, #9ca3af1f, 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