:root{--navy:#09213f;--blue:#0866d6;--cyan:#20b8ee;--ink:#152238;--muted:#65748a;--line:#dce4ee;--soft:#f4f7fb;--white:#fff;--green:#17865d;--red:#b42318}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--soft);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}.site-header{height:76px;padding:0 max(24px,calc((100% - 1200px)/2));display:flex;align-items:center;justify-content:space-between;background:var(--white);border-bottom:1px solid var(--line)}.brand{font-weight:900;font-size:21px;letter-spacing:-.5px}.brand span{color:var(--blue)}nav{display:flex;gap:28px;font-weight:650}.cn-shop-header{background:#fff;box-shadow:0 2px 12px rgba(15,35,65,.08);position:sticky;top:0;z-index:20}.cn-shop-top{min-height:78px;background:#075ca8;display:grid;grid-template-columns:210px minmax(260px,1fr) auto auto auto;gap:12px;align-items:center;padding:12px max(18px,calc((100% - 1320px)/2))}.cn-shop-logo 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