:root{--maxw: 1180px}.landing-page{background:var(--bg);color:var(--ink);font-family:var(--sans);overflow-x:hidden}.landing-page a{color:inherit;text-decoration:none}.landing-page section{position:relative}.landing-page .mono{font-family:var(--mono)}.landing-page .serif{font-family:var(--serif)}.landing-page .micro{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}.landing-page .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}.landing-page .btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line-2);background:transparent;color:var(--ink);padding:11px 18px;border-radius:999px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s,transform .1s,color .15s}.landing-page .btn:hover{background:var(--surface-2)}.landing-page .btn:active{transform:translateY(1px)}.landing-page 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.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}.landing-page .reveal.in{opacity:1;transform:none}@media (prefers-reduced-motion: reduce){.landing-page .reveal{opacity:1;transform:none;transition:none}}@keyframes drift{0%,to{transform:translate(0) rotate(0)}50%{transform:translateY(-10px) rotate(2deg)}}@keyframes float-y{0%,to{transform:translateY(0)}50%{transform:translateY(-14px)}}:root{--bg: #0b0b0c;--bg-2: #131315;--surface: #1a1a1d;--surface-2: #232327;--line: #2a2a2e;--line-2: #3a3a40;--ink: #f4f3ee;--ink-2: #c8c6bd;--ink-3: #8a877d;--ink-4: #5a584f;--accent: #d8ff3a;--accent-ink: #0b0b0c;--warn: #ff8a5b;--ok: #8df0a9;--radius: 14px;--radius-sm: 8px;--sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;--mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif}[data-theme=light]{--bg: #f5f3ec;--bg-2: #ebe9e1;--surface: #ffffff;--surface-2: #f0eee5;--line: #dcd9cd;--line-2: #c4c0b1;--ink: #161616;--ink-2: #3d3c36;--ink-3: #6a685c;--ink-4: #98968a;--accent-ink: #0b0b0c}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;min-height:100vh;overflow-x:hidden;font-size:15.5px}button{font-family:inherit;cursor:pointer}::selection{background:var(--accent);color:var(--accent-ink)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--line-2)}.mono{font-family:var(--mono);letter-spacing:.02em}.serif{font-family:var(--serif)}.micro{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}.nowrap{white-space:nowrap}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}@media (max-width: 1100px){.shell{grid-template-columns:72px 1fr}}.side{border-right:1px solid var(--line);background:var(--bg-2);padding:22px 18px;display:flex;flex-direction:column;gap:28px;position:sticky;top:0;height:100vh}.main{min-width:0}.top{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;border-bottom:1px solid var(--line);position:sticky;top:0;background:color-mix(in oklab,var(--bg),transparent 8%);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:5}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line-2);background:transparent;color:var(--ink);padding:9px 14px;border-radius:999px;font-size:13px;font-weight:500;transition:background .15s,border-color .15s,transform .1s}.btn:hover{background:var(--surface-2)}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}.btn.primary:hover{filter:brightness(1.08);background:var(--accent)}.btn.ghost{border-color:transparent;color:var(--ink-2)}.btn.ghost:hover{background:var(--surface-2);color:var(--ink)}.btn.small{padding:6px 10px;font-size:12px}.btn:disabled{cursor:not-allowed}.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border-radius:999px;font-family:var(--mono);font-size:11px;border:1px solid var(--line);color:var(--ink-2);background:color-mix(in oklab,var(--surface) 70%,transparent)}.chip.dot:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}.hr-dot{border:none;border-top:1px dashed var(--line-2);margin:0}.tabs{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px;gap:2px}.tabs button{border:none;background:transparent;color:var(--ink-2);padding:7px 14px;border-radius:999px;font-size:12.5px;font-weight:500;transition:background .15s,color .15s}.tabs button.on{background:var(--ink);color:var(--bg)}[data-theme=light] .tabs button.on{background:var(--ink);color:var(--surface)}.nav-item{display:flex;align-items:center;gap:12px;padding:9px 11px;border-radius:10px;color:var(--ink-2);text-decoration:none;font-size:13.5px;cursor:pointer;-webkit-user-select:none;user-select:none;background:none;border:none;font-family:inherit}.nav-item:hover,.nav-item.on{background:var(--surface);color:var(--ink)}.nav-item.on .nav-dot{background:var(--accent)}.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--ink-4)}.nav-section{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-4);padding:0 11px;margin-bottom:8px}.logo{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:-.01em}.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:13px}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;background:var(--line);border-radius:999px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;background:var(--ink);border-radius:50%;border:3px solid var(--accent);cursor:pointer}input[type=range]::-moz-range-thumb{width:14px;height:14px;background:var(--ink);border-radius:50%;border:3px solid var(--accent);cursor:pointer}.input{background:var(--bg-2);border:1px solid var(--line);color:var(--ink);padding:10px 12px;border-radius:10px;font-family:inherit;font-size:13px;width:100%}.input:focus{outline:none;border-color:var(--accent)}@keyframes pulse-ring{0%{transform:scale(.95);opacity:.6}to{transform:scale(1.6);opacity:0}}@keyframes wave{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1)}}@keyframes fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.wave-bars{display:flex;align-items:center;gap:2px;height:24px}.wave-bars span{display:block;width:2px;background:currentColor;border-radius:1px;transform-origin:center}.wave-bars.playing span{animation:wave 1.1s ease-in-out infinite}