:root{--bg:#f5f7fb;--panel:#fff;--text:#132033;--muted:#667085;--line:#dbe3ef;--blue:#1769e0;--blue2:#0d47a1;--soft:#eaf2ff;--warn:#fff4e5;--note:#eef8f1;--shadow:0 10px 30px rgba(15,23,42,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.topbar{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(15,23,42,.04)}.topbar-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:12px 20px}.brand{font-weight:800;color:#0f1f37;letter-spacing:-.02em}.brand span{display:block;font-size:12px;font-weight:500;color:var(--muted)}.top-search{margin-left:auto;display:flex;gap:8px;min-width:360px}.top-search input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px}.btn{border:0;border-radius:10px;background:var(--blue);color:white;padding:10px 16px;font-weight:700;cursor:pointer}.btn:hover{background:var(--blue2)}.layout{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:330px minmax(0,1fr);gap:24px;padding:24px 20px}.sidebar{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 100px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:16px}.nav-filter{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:12px}.nav-group-title{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:18px 0 8px}.nav-list{list-style:none;padding:0;margin:0}.nav-list li{margin:1px 0}.nav-list a{display:block;padding:8px 10px;border-radius:9px;color:#24334a;font-size:14px}.nav-list a:hover,.nav-list a.active{background:var(--soft);text-decoration:none;color:#0d47a1}.content{min-width:0}.hero,.doc-card,.article{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}.hero{padding:32px;margin-bottom:20px;background:linear-gradient(135deg,#ffffff 0%,#eef5ff 100%)}.hero h1{font-size:36px;line-height:1.1;margin:0 0 12px}.hero p{max-width:900px;color:#475467;font-size:17px;margin:0}.quick-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:24px}.quick-grid a{display:block;padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff;color:#132033}.quick-grid b{display:block;margin-bottom:6px}.doc-card{padding:22px;margin-bottom:20px}.article{padding:32px}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px}.article h1{font-size:32px;line-height:1.15;margin:0 0 8px}.page-range{color:var(--muted);margin-bottom:24px}.page-block{border-top:1px solid var(--line);padding-top:18px;margin-top:28px}.page-label{display:inline-flex;gap:6px;align-items:center;background:#f2f4f7;color:#344054;border-radius:999px;padding:5px 10px;font-size:13px;margin-bottom:12px}.article h2{margin-top:26px;padding-top:10px;font-size:25px;line-height:1.2}.article h3{margin-top:22px;font-size:21px}.article h4{margin-top:20px;font-size:18px}.anchor{font-size:14px;margin-left:8px;color:#98a2b3;opacity:.5}.article p{margin:10px 0}.bullet{padding-left:18px}.warning,.note{border-left:4px solid #f79009;background:var(--warn);padding:12px 14px;border-radius:8px}.note{border-left-color:#12b76a;background:var(--note)}figure{margin:18px 0;padding:12px;background:#fbfcff;border:1px solid var(--line);border-radius:14px;text-align:center}figure img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 14px rgba(15,23,42,.10)}.caption{font-size:14px;color:#475467;text-align:center;margin:6px 0 16px}.caption-table{font-weight:700}.prev-next{display:flex;justify-content:space-between;gap:14px;margin-top:24px}.prev-next a{flex:1;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;color:#132033}.prev-next a:last-child{text-align:right}.footer{max-width:1440px;margin:30px auto 0;padding:24px 20px;color:#667085;font-size:14px}.search-result{padding:18px;border-bottom:1px solid var(--line)}.search-result h3{margin:0 0 4px}.search-result .meta{color:var(--muted);font-size:13px;margin-bottom:8px}.empty{padding:25px;color:var(--muted)}.toc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}.toc-grid a{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;color:#132033}.toc-grid span{display:block;color:var(--muted);font-size:13px;margin-top:5px}.notice{background:#fff8e6;border:1px solid #ffd27a;padding:14px 16px;border-radius:14px;margin:16px 0;color:#614700}code{background:#f2f4f7;border-radius:5px;padding:2px 5px}
@media(max-width:980px){.layout{grid-template-columns:1fr}.sidebar{position:relative;top:0;max-height:420px}.top-search{min-width:0;flex:1}.topbar-inner{flex-wrap:wrap}.hero h1{font-size:28px}.article{padding:22px}}