:root{--bg:#F6F7F5;--white:#fff;--dark:#12263A;--heading:#14263A;--ink:#293847;--muted:#596B78;--accent:#176B83;--gold:#D59B58;--line:#DCE4E4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:3px}img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}.shell{width:min(1160px,calc(100% - 56px));margin-inline:auto}.skip{position:absolute;left:-9999px;z-index:50}.skip:focus{left:15px;top:12px;background:white;padding:10px}.site-header{position:relative;z-index:10;background:#fff;border-bottom:1px solid var(--line)}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand,.foot-brand{display:inline-flex;align-items:center;gap:9px;font-size:20px;font-weight:800;color:var(--heading);white-space:nowrap}.brand-img{width:auto;max-width:110px;height:32px;object-fit:contain}.primary{display:flex;align-items:center;gap:clamp(12px,2vw,30px)}.primary a{color:var(--heading);font-weight:600;padding:18px 0 15px;border-bottom:3px solid transparent}.primary .active{color:var(--accent);border-color:var(--accent)}.header-actions{display:flex;gap:12px;align-items:center;white-space:nowrap}.menu-toggle{border:1px solid var(--line);background:white;border-radius:10px;color:var(--heading);padding:7px 12px;min-height:44px}.app-link{background:var(--dark);color:white;padding:8px 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h2{font-size:16px;color:var(--heading);margin:0 0 10px}.footer-grid a{display:block;font-size:14px;color:var(--ink);padding:3px 0}.footer-note{border-top:1px solid var(--line);padding-top:18px;margin-top:30px}.footer-note p{font-size:13px;color:var(--muted);margin:5px 0}.home-hero{display:grid;grid-template-columns:55fr 45fr;gap:36px;align-items:center;padding:56px 0}.home-hero p{max-width:54ch}.image-slot{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;align-items:center;justify-content:center;min-width:0}.hero-photo{max-height:320px;width:auto;max-width:100%}.home-section{padding:44px 0;border-top:1px solid var(--line)}.home-section p{margin:0 0 16px}.home-section .lead{max-width:78ch}.button-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.button-links a{padding:10px 18px;border:1px solid var(--dark);border-radius:10px;min-height:44px;display:inline-flex;align-items:center}.button-links 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