:root{--bg:#F6FAFC;--surface:#fff;--pale:#EAF6FA;--pale2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--navy:#174B78;--title:#183A56;--text:#31485D;--muted:#687D8E;--border:#DCE9F0;--footer:#123653;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;color:var(--text);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);overflow-wrap:break-word}body.drawer-open{overflow:hidden}a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#0B7DBD}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #0B87BF;outline-offset:4px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}.container{width:min(var(--max),calc(100% - 56px));margin-inline:auto}.site-header{background:#fff;border-bottom:1px solid var(--border)}.topbar{height:72px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;text-decoration:none;min-width:0}.brand img{display:block;width:auto;height:auto;max-height:38px;max-width:235px;object-fit:contain}.brand-fallback{font-size:23px;font-weight:800;line-height:1.1;white-space:nowrap;color:var(--navy)}.brand-fallback small{font-size:10px;display:block;letter-spacing:.22em}.header-note{margin:auto;color:var(--muted);font-size:14px}.header-cta{background:var(--navy);padding:7px 22px;border-radius:9px;text-decoration:none;color:#fff;font-weight:700;white-space:nowrap}.header-cta:hover{color:#fff;background:#0F689B}.desktop-nav{background:var(--navy)}.nav-inner{min-height:48px;display:flex;align-items:stretch;justify-content:space-between;gap:7px}.desktop-nav a{display:flex;align-items:center;white-space:nowrap;color:#e8f9ff;text-decoration:none;font-size:14px;padding:8px 12px;border-bottom:3px solid transparent}.desktop-nav 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