/* 协议类页面共用样式（scripts/website_signalgo_build.php 生成，勿手改） */
:root{--bg:#fff;--fg:#2d2d33;--mute:#8a8a92;--line:#e9e9ee;--link:#2b6cb0;--note:#f4f6f9;--chip:#e8f1fb;--chipfg:#0a5a9c}
@media (prefers-color-scheme:dark){:root{--bg:#121216;--fg:#d9d9e0;--mute:#8d8d97;--line:#26262d;--link:#6cb0ea;--note:#1b1b21;--chip:#1c2a38;--chipfg:#8cc4f0}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.85 -apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
.bar{max-width:780px;margin:0 auto;padding:18px 20px 0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--fg);font-weight:600;font-size:17px;text-decoration:none}
.brand img{border-radius:7px}
.doc{max-width:780px;margin:0 auto;padding:18px 20px 48px}
.doc h1{font-size:22px;text-align:center;margin:18px 0 6px}
.doc .meta{color:var(--mute);font-size:14px;text-align:center;margin:0 0 28px}
.doc h2{font-size:17px;margin-top:26px}.doc h3{font-size:16px;margin-top:22px}
.doc p{margin:8px 0}.doc ul,.doc ol{padding-left:22px}
.notice{background:var(--note);border-radius:8px;padding:10px 14px;color:var(--mute);font-size:14px;margin:0 0 24px}
[data-platform]::before{content:attr(data-platform);display:inline-block;font-size:11px;font-weight:600;padding:1px 6px;border-radius:4px;margin-bottom:4px;background:var(--chip);color:var(--chipfg)}
[data-platform=ios]::before{content:"iOS"}[data-platform=android]::before{content:"Android"}[data-platform=harmony]::before{content:"HarmonyOS"}
.foot{max-width:780px;margin:0 auto;padding:22px 20px 40px;border-top:1px solid var(--line);color:var(--mute);font-size:13px;text-align:center}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:center;margin-bottom:10px}