:root{color-scheme:light;--bg: #fff;--fg: #000;--muted: #555;--faint: #8a8a8a;--line: #e5e5e5;--line-strong: #000;--panel: #fafafa;--shadow-float: 0 18px 50px #00000014;--font-sans: "Geist", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;--font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", "Microsoft YaHei", monospace;--container: 1200px;--pad-x: clamp(20px, 5vw, 48px);--block-gap: clamp(88px, 10vw, 144px);--radius-card: 12px;--radius-pill: 999px;--dur: .16s;--ease: cubic-bezier(.25, .1, .25, 1);--nav-h: 68px}@media(max-width:560px){:root{--pad-x: 16px;--block-gap: 64px}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}ul,ol{padding:0;list-style:none}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}img,svg,canvas{display:block;max-width:100%}:focus-visible{outline:2px solid var(--fg);outline-offset:3px;border-radius:6px}.container{width:100%;max-width:calc(var(--container) + var(--pad-x) * 2);margin-inline:auto;padding-inline:var(--pad-x)}.section{padding-top:var(--block-gap)}.hl{font-style:normal;padding:0 .04em;background:linear-gradient(to bottom,transparent 58%,color-mix(in srgb,var(--fg) 13%,transparent) 58%,color-mix(in srgb,var(--fg) 13%,transparent) 90%,transparent 90%);-webkit-box-decoration-break:clone;box-decoration-break:clone}.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.mono{font-family:var(--font-mono)}.section-head{display:grid;gap:20px 48px;align-items:end}@media(min-width:900px){.section-head{grid-template-columns:1.15fr 1fr}}.section-title{font-size:clamp(34px,4.6vw,60px);font-weight:500;line-height:1.12;letter-spacing:-.035em;text-wrap:balance}.section-lead{max-width:560px;font-size:clamp(16px,1.25vw,18.5px);line-height:1.7;color:var(--muted);text-wrap:pretty}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border:1px solid var(--fg);border-radius:var(--radius-pill);font-size:15.5px;font-weight:500;white-space:nowrap;cursor:pointer;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease)}.btn-lg{min-height:50px;padding:0 24px;font-size:16.5px}.btn-solid{background:var(--fg);color:var(--bg)}.btn-solid:hover{background:#2a2a2a}.btn-ghost{background:var(--bg);color:var(--fg)}.btn-ghost:hover{background:var(--panel)}.arrow{font-family:var(--font-mono);font-weight:400;display:inline-block;transition:transform var(--dur) var(--ease)}a:hover>.arrow,button:hover>.arrow,.card-link:hover .arrow{transform:translate(3px)}.card{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg)}.panel{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--panel)}.tag{display:inline-flex;align-items:center;height:24px;padding:0 9px;border:1px solid var(--line);border-radius:var(--radius-pill);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--muted);background:var(--bg)}.dot{width:6px;height:6px;border-radius:50%;background:var(--fg);flex:none}.dot-live{animation:pulse 2s var(--ease) infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.25}}.grain:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s cubic-bezier(.22,1,.36,1);transition-delay:calc(var(--i, 0) * 60ms)}.js [data-reveal].is-visible{opacity:1;transform:none}@media(prefers-reduced-motion:reduce){.js [data-reveal]{opacity:1;transform:none;transition:none}.dot-live{animation:none}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:-60px;z-index:100;padding:10px 16px;border-radius:var(--radius-pill);background:var(--fg);color:var(--bg);transition:top var(--dur) var(--ease)}.skip-link:focus{top:12px}