:root{color-scheme:light;--ink:#1d2939;--muted:#667085;--brand:#314681;--line:#e2e7ef;--paper:#fff;--canvas:#f5f7fb;--soft:#edf1fa}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--canvas);color:var(--ink);font:16px/1.85 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}a{color:var(--brand);text-underline-offset:4px}a:hover{color:#18316e}a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #8ba5ef;outline-offset:4px}.skip{position:absolute;top:-100px;left:16px;z-index:10;background:white;padding:10px}.skip:focus{top:10px}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:13px max(24px,calc((100vw - 1240px)/2));background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;font-weight:750;color:var(--ink);line-height:1.25;white-space:nowrap}.mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--brand);color:white;font-size:24px}.brand-sub{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:4px}.topbar nav{display:flex;gap:23px;font-size:14px}.topbar nav a{text-decoration:none}.hero{max-width:1240px;margin:auto;padding:45px 24px 26px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--brand);font-weight:700}.hero h1{font-size:34px;line-height:1.3;margin:12px 0}.hero>p:not(.eyebrow){color:var(--muted);margin-bottom:22px}.page-tabs{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0}.page-tabs a{padding:8px 18px;border-radius:9px;text-decoration:none;border:1px solid var(--line);background:white;font-size:14px}.page-tabs [aria-current]{background:var(--brand);color:white;border-color:var(--brand)}.role-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px}.role-links a{display:block;background:white;border:1px solid var(--line);border-radius:14px;padding:18px 20px;text-decoration:none;font-size:14px;color:var(--muted)}.role-links a:hover{border-color:#9cadd2}.role-links span{display:block;font-size:18px;color:var(--brand);font-weight:700;margin-bottom:4px}.layout{display:grid;grid-template-columns:245px minmax(0,1fr);max-width:1240px;margin:auto;padding:0 24px 45px;gap:26px}aside{position:sticky;top:93px;align-self:start;max-height:calc(100vh - 115px);overflow:auto;font-size:13px;padding:14px 10px 14px 0}summary{font-size:15px;font-weight:700;cursor:pointer}.toc ul{list-style:none;padding-left:13px}.toc>ul{padding-left:0}.toc li{margin:7px 0}.toc a{text-decoration:none;color:var(--muted)}.toc a:hover{color:var(--brand)}.toc>ul>li>a{display:none}.toc>ul>li>ul{padding-left:0}.download{display:block;border-top:1px solid var(--line);margin-top:18px;padding-top:15px}.hint{font-size:12px;color:var(--muted)}main{min-width:0;background:white;border:1px solid var(--line);border-radius:16px;padding:30px 36px;overflow-wrap:anywhere}article>h1{font-size:24px;margin-top:0}h2{font-size:23px;line-height:1.5;margin:42px 0 18px;padding-top:12px;border-top:1px solid var(--line)}h3{font-size:18px;margin:28px 0 12px}p{margin:12px 0}li{margin:9px 0}ol,ul{padding-left:1.6em}.table-scroll{max-width:100%;overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:10px}table{border-collapse:collapse;width:100%;font-size:14px;min-width:480px}th,td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:var(--soft);font-weight:650}tr:last-child td{border-bottom:0}tbody tr:nth-child(even){background:#fafbfe}.flow{margin:22px 0;padding:22px;border-radius:14px;background:var(--soft);text-align:center}.flow>div{background:white;border:1px solid var(--line);padding:13px 18px;border-radius:10px}.flow strong{color:var(--brand)}.flow p{margin:4px 0;font-size:14px}.flow-arrow{display:block;color:var(--brand);font-size:20px;line-height:1.6}.flow .flow-note{text-align:left;color:var(--muted);font-size:13px;margin-top:16px}footer{border-top:1px solid var(--line);margin-top:38px;padding-top:18px;font-size:12px;color:var(--muted)}
@media(max-width:850px){.layout{grid-template-columns:1fr;gap:12px}aside{position:static;max-height:none;padding:12px 18px;border:1px solid var(--line);border-radius:12px;background:white}.toc ul ul ul{display:none}.toc>ul>li>ul{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.download{margin-top:10px;padding-top:10px}.hint{margin-bottom:0}main{padding:25px}.hero{padding-top:28px}.hero h1{font-size:29px}.role-links{gap:9px}.role-links a{padding:14px}.role-links span{font-size:16px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{body{background:white;font-size:11pt}.topbar,.hero,.layout>aside,.skip{display:none}.layout{display:block;max-width:none;padding:0}main{border:0;padding:0}h2,h3{break-after:avoid}.table-scroll{overflow:visible;border-radius:0}table{min-width:0;font-size:9pt}a{color:inherit}.flow{break-inside:avoid}footer{font-size:9pt}}