:root{--bg:#06101d;--panel:#0d1d2f;--text:#f2f8ff;--muted:#b0c3d6;--line:#25384c;--mint:#48d7c4;--amber:#ffd27a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit}p{color:var(--muted)}h1,h2,h3{line-height:1.22;letter-spacing:-.025em}h1{font-size:clamp(36px,4.7vw,62px);margin:18px 0 24px}h2{font-size:clamp(25px,3vw,36px);margin:0 0 24px}h3{font-size:21px;margin:0 0 12px}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.narrow{max-width:860px}header{border-bottom:1px solid var(--line)}.nav,.nav nav{display:flex;gap:24px;align-items:center;justify-content:space-between}.nav{min-height:80px}.nav nav{font-size:14px}.nav a{text-decoration:none}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:800}.mark{display:grid;place-items:center;width:38px;height:38px;background:var(--mint);color:var(--bg);border-radius:12px}.language{display:flex;border:1px solid var(--line);border-radius:10px;padding:3px}.language button{cursor:pointer;border:0;border-radius:7px;color:var(--muted);background:none;padding:8px 12px;font:inherit}.language button[aria-pressed=true]{color:var(--bg);background:var(--mint)}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--mint);font-weight:700}.hero{padding:70px 0}.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:52px;align-items:center}.hero-grid>div>p:not(.eyebrow):not(.notice){font-size:18px;max-width:590px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px}.record{padding:18px 0;border-bottom:1px solid var(--line)}.record b{display:block;font-size:20px;margin-top:6px}.record p{font-size:14px;margin-bottom:0}.code{font:12px/1.8 ui-monospace,monospace;color:var(--mint);overflow-wrap:anywhere}.small{font-size:13px}.notice{border-left:3px solid var(--amber);padding:12px 16px;background:#292820;border-radius:4px;color:#f4dfac;font-size:14px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 20px}.button{display:inline-block;text-decoration:none;font-weight:650;border:1px solid var(--line);padding:12px 17px;border-radius:11px}.button.primary{background:var(--mint);color:var(--bg);border-color:var(--mint)}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:4px}.section{padding:64px 0}.shade{background:#0a1726;border-block:1px solid var(--line)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.three{grid-template-columns:repeat(3,1fr)}.panel p:last-child{margin-bottom:0}.contact{max-width:860px}.contact p{overflow-wrap:anywhere}details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:650}.sample{margin:24px 0}.sample h2{font-size:25px}.sample pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#07121f;padding:18px;border:1px solid var(--line);border-radius:10px;font:14px/1.8 ui-monospace,monospace}.footer{display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted);padding:30px 0;border-top:1px solid var(--line)}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:10px;z-index:10;background:white;color:black;padding:10px}.lang-en{display:none}body[data-language=en] .lang-zh{display:none}body[data-language=en] .lang-en{display:revert}body[data-language=zh] .lang-en{display:none}@media(max-width:900px){.hero-grid,.grid,.three{grid-template-columns:1fr}.hero-grid{gap:28px}.hero{padding:40px 0}.section{padding:42px 0}.footer{flex-direction:column;gap:8px}}@media(max-width:560px){.nav{flex-wrap:wrap;padding:16px 0;gap:14px}.nav nav{width:100%;gap:12px;justify-content:space-between}.wrap{width:calc(100% - 32px)}.panel{padding:20px}h1{font-size:36px}.button{max-width:100%}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}