:root{--bg:#0F141D;--bg1:#151B27;--bg2:#1C2433;--bg3:#242D3D;--gold:#EED59A;--gold2:#C9A96A;--text:#EEF2F7;--muted:#BAC3D4;--dim:#8D97AA;--footer:#090D14;--line:rgba(238,213,154,.14);--shadow:0 18px 42px rgba(0,0,0,.32)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;overflow-x:hidden}a{color:var(--gold);text-decoration:none}img{display:block;max-width:100%;height:auto}.container{width:min(1200px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:9999;background:#0F141D;backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(0,0,0,.22)}.top-nav{height:76px;display:grid;grid-template-columns:180px 1fr auto;align-items:center;gap:24px}.brand-logo img{max-height:46px;max-width:160px;object-fit:contain}.nav-core{display:flex;justify-content:center;align-items:center;gap:28px;white-space:nowrap;min-width:0}.nav-core 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