:root{--brand: #2563eb;--brand-2: #22d3ee;--brand-dark: #1e40af;--text: #0f172a;--text-2: #475569;--text-3: #64748b;--bg: #ffffff;--bg-soft: #f8fafc;--bg-soft-2: #f1f5f9;--border: #e2e8f0;--radius: 14px;--shadow: 0 6px 24px rgba(15, 23, 42, .06);--shadow-lg: 0 18px 48px rgba(15, 23, 42, .12)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{color:var(--brand-dark)}img{max-width:100%}.container{width:min(1180px,92vw);margin:0 auto}.section{padding:76px 0}.section--soft{background:var(--bg-soft)}.section-head{text-align:center;max-width:760px;margin:0 auto 46px}.section-head h2{font-size:clamp(24px,3vw,34px);margin:0 0 12px;letter-spacing:-.5px}.section-head p{margin:0;color:var(--text-2);font-size:16px}.eyebrow{display:inline-block;font-size:13px;color:var(--brand);background:#2563eb1a;padding:4px 12px;border-radius:999px;margin-bottom:14px}.grid{display:grid;gap:22px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.card h3{margin:0 0 10px;font-size:18px}.card p{margin:0;color:var(--text-2);font-size:15px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:10px;font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;transition:all .2s ease}.btn--primary{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 22px #2563eb47}.btn--primary:hover{color:#fff;filter:brightness(1.05)}.btn--ghost{background:#fff;color:var(--text);border-color:var(--border)}.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}.btn--light{background:#ffffff24;color:#fff;border-color:#ffffff59;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.btn--light:hover{color:#fff;background:#ffffff3d}.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;background:var(--bg-soft-2);color:var(--text-3)}.header{position:sticky;top:0;z-index:50;background:#ffffffe0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.header__inner{display:flex;align-items:center;justify-content:space-between;height:66px}.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text)}.logo__mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700}.nav{display:flex;align-items:center;gap:28px}.nav a{color:var(--text-2);font-size:15px;position:relative;padding:4px 0}.nav a:hover,.nav a.is-active{color:var(--brand)}.nav a.is-active:after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--brand);border-radius:2px}.header__actions{display:flex;align-items:center;gap:12px}.only-mobile{display:none}.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:18px;cursor:pointer;color:var(--text)}.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#0f172a,#1e3a8a 45%,#0e7490);padding:92px 0 96px}.hero:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(700px 340px at 78% 12%,rgba(34,211,238,.28),transparent 70%);pointer-events:none}.hero__inner{position:relative;display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center}.hero h1{font-size:clamp(30px,4.2vw,48px);line-height:1.22;margin:16px 0 18px;letter-spacing:-1px}.hero p{font-size:17px;color:#ffffffd9;margin:0 0 30px;max-width:620px}.hero__actions{display:flex;gap:14px;flex-wrap:wrap}.hero__channels{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}.hero__channels span{font-size:13px;padding:6px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.24);color:#ffffffe6}.hero__panel{background:#ffffff14;border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:22px;box-shadow:0 24px 60px #00000047}.hero__panel h4{margin:0 0 14px;font-size:15px;color:#ffffffe6;font-weight:500}.code{background:#0b1220;border-radius:12px;padding:16px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:12.5px;line-height:1.75;color:#cbd5e1;overflow-x:auto;margin:0}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.metric{text-align:center}.metric strong{display:block;font-size:clamp(22px,2.6vw,30px);background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}.metric span{font-size:13.5px;color:var(--text-2)}.steps{counter-reset:step}.step{position:relative;padding-top:16px}.step__no{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:#2563eb1a;color:var(--brand);font-weight:700;margin-bottom:14px}.list{list-style:none;padding:0;margin:0}.list li{position:relative;padding-left:24px;color:var(--text-2);font-size:15px;margin-bottom:10px}.list li:before{content:"";position:absolute;left:6px;top:11px;width:7px;height:7px;border-radius:50%;background:linear-gradient(120deg,var(--brand),var(--brand-2))}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff}table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:620px}th,td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--border)}th{background:var(--bg-soft);color:var(--text-2);font-weight:600}tbody tr:last-child td{border-bottom:none}.footer{background:#0b1220;color:#94a3b8;padding:56px 0 28px;font-size:14px}.footer__top{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}.footer h5{color:#fff;margin:0 0 14px;font-size:15px}.footer ul{list-style:none;padding:0;margin:0}.footer li{margin-bottom:9px}.footer a{color:#94a3b8}.footer a:hover{color:#fff}.footer__brand{color:#fff;font-size:17px;font-weight:700;margin-bottom:12px}.footer__bottom{padding-top:22px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px}.prose{max-width:860px;margin:0 auto}.prose h2{font-size:22px;margin:38px 0 14px;padding-left:12px;border-left:4px solid var(--brand)}.prose h3{font-size:17px;margin:24px 0 10px}.prose p,.prose li{color:var(--text-2);font-size:15.5px}.prose ol,.prose ul{padding-left:22px}.prose li{margin-bottom:8px}.code-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 10px}.code-tab{border:1px solid var(--border);background:#fff;color:#5b6472;border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer}.code-tab.is-active{border-color:var(--brand);color:var(--brand)}.sdk-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:14px 0 18px}.prose .muted{color:var(--text-3);font-size:13.5px}.notice{background:var(--bg-soft);border:1px dashed var(--border);border-radius:var(--radius);padding:18px 20px;color:var(--text-2);font-size:14.5px}@media(max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr)}.footer__top{grid-template-columns:1fr 1fr}}@media(max-width:900px){.hero__inner{grid-template-columns:1fr}.metrics{grid-template-columns:repeat(2,1fr)}.nav{position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;background:#fff;border-bottom:1px solid var(--border);padding:8px 4vw 18px;display:none}.nav.is-open{display:flex}.nav a{padding:12px 0;width:100%;border-bottom:1px solid var(--bg-soft-2)}.nav-toggle{display:block}.header__actions .btn{display:none}.only-mobile{display:block}}@media(max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.section{padding:54px 0}.footer__top{grid-template-columns:1fr}}