:root{--bg:#fbfbfd;--surface:#fff;--text:#1d1d1f;--text-dim:#6e6e73;--hairline:rgba(0,0,0,.08);--accent:#0071e3;--radius-card:20px;--radius-chip:12px;--max:980px}@media (prefers-color-scheme:dark){:root{--bg:#000;--surface:#1c1c1e;--text:#f5f5f7;--text-dim:#a1a1a6;--hairline:hsla(0,0%,100%,.12);--accent:#2997ff}}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Inter,system-ui,sans-serif;font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}h1,h2,h3{letter-spacing:-.022em;line-height:1.08;margin:0;font-weight:600}h1{font-size:clamp(2.6rem,7vw,4.2rem)}h2{font-size:clamp(1.8rem,4vw,2.6rem)}h3{font-size:1.22rem}p{margin:0}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:20;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--hairline)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:48px}.brand{font-weight:600;letter-spacing:-.02em;color:var(--text);font-size:1.05rem}.nav a.link{color:var(--text-dim);font-size:.86rem;margin-left:22px}.nav a.link:hover{color:var(--text);text-decoration:none}.hero{text-align:center;padding:96px 0 72px}.hero p.sub{margin:20px auto 0;max-width:620px;font-size:clamp(1.1rem,2.2vw,1.4rem);color:var(--text-dim)}.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}.btn{display:inline-block;padding:12px 24px;border-radius:980px;font-size:1rem;font-weight:500;min-height:44px;line-height:20px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{text-decoration:none;opacity:.9}.btn-ghost{color:var(--accent);border:1px solid var(--hairline)}.btn-ghost:hover{text-decoration:none;border-color:var(--accent)}.grid{display:grid;grid-gap:18px;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-card);padding:26px}.card h3{margin-bottom:8px}.card p{color:var(--text-dim);font-size:.95rem}section{padding:64px 0}.section-head{text-align:center;margin-bottom:40px}.section-head p{color:var(--text-dim);margin-top:12px}.stat{font-size:clamp(2.4rem,6vw,3.4rem);font-weight:600;letter-spacing:-.03em}.chip{display:inline-block;padding:5px 12px;border-radius:var(--radius-chip);font-size:.78rem;border:1px solid var(--hairline);color:var(--text-dim)}.chip-live{color:#1d8a4e;border-color:rgba(29,138,78,.35)}dl.faq{margin:0}dl.faq dt{font-weight:600;margin-top:26px}dl.faq dd{margin:8px 0 0}dl.faq dd,footer{color:var(--text-dim)}footer{border-top:1px solid var(--hairline);padding:40px 0;font-size:.85rem}footer a{color:var(--text-dim)}