:root{--navy:#071426;--blue:#0b2f5f;--cyan:#2aa7d8;--gold:#c9a35a;--text:#172033;--muted:#6c778b;--line:#e7edf5;--bg:#f6f8fb}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75}.container{width:min(1180px,92vw);margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(7,20,38,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:14px;color:#fff;text-decoration:none}.brand-logo{width:60px;height:34px;object-fit:contain;background:#fff;border-radius:2px;padding:3px;display:block;flex-shrink:0}.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-text strong{font-size:17px;letter-spacing:1.5px}.brand-text 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