:root{--ink:#142b43;--muted:#596c7e;--blue:#0a4da2;--deep:#07346e;--gold:#d4af37;--paper:#f4f7fa;--line:#dce5ed}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:#fff;font:16px/1.8 "Microsoft YaHei","PingFang SC",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}img{max-width:100%;height:auto;display:block}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.topbar{background:var(--deep);color:#e7eff8;font-size:12px;padding:7px 0}.topbar .wrap{display:flex;justify-content:space-between;gap:16px}.topbar a:hover{color:#fff}.header{background:#fffffff5;position:sticky;top:0;z-index:10;backdrop-filter:blur(12px);border-bottom:1px solid 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