:root{--navy:#092a40;--ink:#153247;--muted:#516979;--blue:#0877bd;--teal:#008675;--line:#dce7ec;--paper:#f5f9fb;--white:#fff;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font:1rem/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--blue);text-underline-offset:4px}button,a{touch-action:manipulation}button{font:inherit}.wrap{width:min(1160px,calc(100% - 48px));margin:auto}.skip{position:absolute;left:12px;top:-100px;background:white;padding:12px;z-index:20}.skip:focus{top:12px}header{border-bottom:1px solid var(--line);background:#fff}.nav{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy);font-weight:800;font-size:1.15rem;white-space:nowrap}.brand img{width:44px;height:44px;border-radius:11px}.brand 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