:root{color-scheme:light;--ink:#182a3c;--muted:#506173;--line:#dce4ea;--accent:#15624c;--paper:#fff;--soft:#f4f7f8}
*{box-sizing:border-box}html{scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.85}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid #27886c;outline-offset:5px;border-radius:3px}.topbar{position:sticky;top:0;z-index:2;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px max(24px,calc((100vw - 1260px)/2));background:var(--paper);border-bottom:1px solid var(--line)}.brand{font-weight:800;font-size:21px;color:var(--ink);text-decoration:none;white-space:nowrap}.brand span{font-weight:400;font-size:14px;margin-left:14px;color:var(--muted)}.topbar nav{display:flex;gap:22px;font-size:14px}.layout{max-width:1260px;margin:auto;display:grid;grid-template-columns:236px minmax(0,1fr);gap:64px;padding:0 24px}.toc{position:sticky;top:92px;max-height:calc(100vh - 108px);overflow-y:auto;padding:8px 12px 24px 0;font-size:14px}.toc p{font-weight:750;color:var(--ink);margin:24px 0 8px;font-size:12px;letter-spacing:1px}.toc a{display:block;padding:5px 10px;margin:1px 0;text-decoration:none;color:var(--muted);border-left:2px solid transparent}.toc a:hover{color:var(--accent);background:var(--soft);border-color:var(--accent)}main{min-width:0;max-width:880px;padding-bottom:40px}section{padding:48px 0;border-bottom:1px solid var(--line);scroll-margin-top:10px}section:target>h2{color:var(--accent)}.eyebrow{color:var(--accent);font-size:12px;font-weight:750;letter-spacing:2px;margin:4px 0 18px}h1{font-size:clamp(32px,4.2vw,52px);line-height:1.3;letter-spacing:-1.5px;margin:16px 0 24px}h2{font-size:27px;line-height:1.5;margin:0 0 20px;letter-spacing:-.5px}h3{font-size:20px;margin:30px 0 12px}h4{font-size:16px;margin:20px 0 8px}p{margin:12px 0 18px}.lead{font-size:19px;color:var(--muted);max-width:710px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.button{display:inline-block;padding:10px 20px;border-radius:7px;background:var(--accent);color:white;text-decoration:none;font-weight:650}.button.secondary{background:var(--soft);color:var(--accent);border:1px solid var(--line)}.note,.success{padding:18px 22px;margin:24px 0;border-left:3px solid #c18a20;background:#fff9ed;border-radius:0 6px 6px 0}.success{border-color:var(--accent);background:#eef8f3}.path{font-size:14px;color:var(--accent);padding:9px 14px;background:var(--soft);border-radius:5px}ol,ul{padding-left:26px}li{padding-left:4px;margin:10px 0}dl{display:grid;grid-template-columns:125px 1fr;gap:14px 20px;margin:24px 0}dt{font-weight:700}dd{margin:0;color:var(--muted)}code,kbd{font-family:Consolas,"SFMono-Regular",monospace;font-size:.88em;background:var(--soft);padding:2px 5px;border-radius:4px;overflow-wrap:anywhere}pre{padding:20px 24px;background:#182a3c;color:#eaf4ee;border-radius:8px;overflow:auto;line-height:1.8}pre code{background:transparent;padding:0;color:inherit;overflow-wrap:normal}kbd{border:1px solid var(--line);border-bottom-width:2px}.table-scroll{overflow-x:auto;margin:24px 0}table{border-collapse:collapse;width:100%;font-size:14px;min-width:560px}caption{text-align:left;color:var(--muted);padding-bottom:10px;font-size:13px}th,td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}thead{background:var(--soft)}tbody th{font-weight:600;min-width:135px}figure{margin:28px 0}img{display:block;max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:var(--soft)}figcaption{font-size:13px;color:var(--muted);margin-top:10px}details{border:1px solid var(--line);border-radius:7px;margin:12px 0;padding:0 20px}summary{padding:15px 0;cursor:pointer;font-weight:600}details[open]{padding-bottom:12px}details p{font-size:15px}footer{font-size:13px;color:var(--muted);padding-top:30px}footer a{display:inline-block;margin-left:12px}.skip{position:fixed;top:-100px;left:16px;background:var(--paper);padding:12px;z-index:5}.skip:focus{top:12px}
@media(max-width:1000px){.layout{gap:32px;grid-template-columns:205px minmax(0,1fr)}}
@media(max-width:760px){.topbar{position:relative;align-items:flex-start;flex-direction:column;gap:8px;padding:16px 20px}.topbar nav{gap:20px}.layout{display:block;padding:0 20px}.toc{position:static;max-height:none;display:flex;flex-wrap:wrap;gap:4px 8px;padding:20px 0;border-bottom:1px solid var(--line)}.toc p{flex-basis:100%;margin:12px 0 0}.toc a{padding:5px 8px;background:var(--soft);border:0;border-radius:4px;font-size:13px}section{padding:36px 0}html{scroll-padding-top:20px}h2{font-size:24px}dl{grid-template-columns:1fr;gap:4px}dd{margin-bottom:14px}.note,.success{padding:16px}pre{padding:16px}.actions{flex-direction:column;align-items:flex-start}}
@media print{.topbar,aside,.actions,.skip{display:none}.layout{display:block;padding:0}main{max-width:none}section{padding:20px 0}details{break-inside:avoid}pre{white-space:pre-wrap}figure{break-inside:avoid}a{color:inherit}body{font-size:11pt}}

.platform-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:28px 0}.platform-grid a{border:1px solid var(--line);border-radius:8px;padding:20px;text-decoration:none;background:var(--soft)}.platform-grid strong{display:block;font-size:21px}.platform-grid span{display:block;color:var(--muted);font-size:14px;margin-top:6px}.platform-grid a:hover{border-color:var(--accent)}@media(max-width:550px){.platform-grid{grid-template-columns:1fr}.topbar nav{flex-wrap:wrap}}