:root{--navy:#173e54;--ink:#163449;--blue:#205b74;--gold:#b18a4e;--paper:#f4f6f5;--line:#d6e0e2;--muted:#546872;--serif:Georgia,'Noto Serif CJK SC','Songti SC',SimSun,serif;--sans:-apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei',Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;color:var(--ink);background:#fff;font:17px/1.85 var(--sans)}a{color:var(--blue);text-underline-offset:.2em}a:hover{color:#0f3446}a:focus-visible{outline:3px solid #a26620;outline-offset:5px}p{margin:0 0 1em}h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.35}h1{font-size:clamp(2rem,4.2vw,3.2rem);letter-spacing:-.025em;max-width:1000px;margin:17px 0}h2{font-size:1.5rem;margin:0 0 14px}h3{font:600 .95rem/1.5 var(--sans);margin:0 0 12px}.wrap{width:min(1180px,100%);margin:auto;padding-inline:30px}.skip{position:fixed;top:-150px;left:15px;z-index:9;padding:9px 16px;background:#fff}.skip:focus{top:12px}.utility{background:var(--navy);color:#e3edf0;font-size:.8rem}.utility .wrap{min-height:44px;display:flex;justify-content:space-between;align-items:center;gap:18px}.utility a{color:#fff}.language{display:flex;gap:20px;align-items:center}.language a{padding-block:7px;text-decoration:none}.language a[aria-current]{font-weight:700;border-bottom:2px solid #dbb67e}.masthead{padding-block:27px;display:flex;justify-content:space-between;align-items:center;gap:24px}.wordmark{font:2rem/1 var(--serif);color:var(--ink);text-decoration:none;letter-spacing:-.03em}.wordmark span{font-size:.65em;color:#8c672e}.tagline{font-size:.8rem;color:var(--muted);margin:8px 0 0}.return-link{font-size:.9rem;white-space:nowrap;padding:10px 0}.document-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.document-nav .wrap{display:flex;gap:28px;flex-wrap:wrap}.document-nav a{display:block;font-size:.92rem;line-height:1.45;padding:16px 0;text-decoration:none}.document-nav a[aria-current]{font-weight:600;color:var(--ink);border-bottom:3px solid var(--gold)}.page-head{background:var(--paper);padding-block:35px;border-bottom:1px solid var(--line)}.page-head .intro{color:var(--muted);max-width:850px;font-size:1.05rem;margin:0 0 17px}.eyebrow{color:#806032;font-size:.72rem;letter-spacing:.11em;text-transform:uppercase;font-weight:650}.metadata{display:flex;flex-wrap:wrap;gap:7px 26px;font-size:.78rem;color:var(--muted)}.draft{margin:28px auto 0;padding:18px 23px;border:1px solid #ddcaa9;border-left:4px solid var(--gold);background:#fff9ef;color:#604c2d}.draft h2{font:650 1rem/1.5 var(--sans);margin:0 0 6px}.draft p{font-size:.88rem;line-height:1.65;margin:0}.layout{display:grid;grid-template-columns:minmax(190px,240px) minmax(0,1fr);gap:60px;padding-block:42px 60px}.contents{align-self:start;position:sticky;top:24px;font-size:.85rem;line-height:1.6;border-top:2px solid var(--ink);padding-top:18px}.contents ol{padding-left:20px;margin:0}.contents li{margin:0 0 12px}.contents a{text-decoration:none;color:var(--muted)}.contents a:hover{text-decoration:underline}.reading{max-width:790px;min-width:0}.reading section{scroll-margin-top:24px;padding-bottom:26px;margin-bottom:26px;border-bottom:1px solid var(--line)}.reading section:last-child{margin-bottom:0}.reading p{overflow-wrap:anywhere;line-height:1.95}.number{font:600 .75rem/1 var(--sans);color:#866334;display:block;margin-bottom:8px}.unknown{background:#fff3df;color:#6d4e1d;border-bottom:1px dotted #9c7441;padding-inline:3px}.footer{background:var(--paper);border-top:1px solid var(--line);padding-block:30px;color:var(--muted);font-size:.82rem}.footer p{margin:0 0 7px;overflow-wrap:anywhere}.footer strong{color:var(--ink);font-weight:600}.footer .top{display:inline-block;margin-top:15px}.footer-brand{font:1.4rem/1.4 var(--serif);color:var(--ink);margin-bottom:13px!important}
@media(max-width:760px){body{font-size:16px}.wrap{padding-inline:21px}.utility .wrap{align-items:flex-start;padding-block:9px;gap:10px}.language{gap:13px;flex-wrap:wrap}.utility .resource-link{max-width:120px}.masthead{align-items:flex-start;flex-wrap:wrap;gap:12px;padding-block:24px}.wordmark{font-size:1.8rem}.return-link{padding:0}.document-nav .wrap{gap:8px 20px}.document-nav a{font-size:.83rem;padding:12px 0}.page-head{padding-block:28px}.layout{grid-template-columns:1fr;gap:30px;padding-block:29px 40px}.contents{position:static;padding-top:16px}.contents ol{columns:2;column-gap:32px}.contents li{break-inside:avoid;font-size:.82rem}.reading section{padding-bottom:21px;margin-bottom:24px}.reading h2{font-size:1.4rem}.draft{padding:15px 17px}.metadata{display:block}.metadata span{display:block}.tagline{max-width:400px}}@media(max-width:420px){.contents ol{columns:1}h1{font-size:1.95rem}.language{gap:11px}.utility{font-size:.75rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.utility,.document-nav,.return-link,.contents,.footer .top{display:none}.wrap{width:auto;padding:0}.layout{display:block;padding:24px 0}.reading{max-width:none}.page-head{background:white;padding:15px 0}.draft{break-inside:avoid}.reading section{break-inside:auto}h2{break-after:avoid}a{color:#000}body{font-size:11pt}.footer{background:white}.metadata{font-size:9pt}}