:root{--primary:rgb(213,5,5);--dark:#111;--text:#333;--muted:#666;--light:#f6f6f6;--line:#e8e8e8;--soft:#fff3f3;--shadow:0 10px 30px rgba(0,0,0,.06);--radius:18px}*{box-sizing:border-box}html,body{margin:0;padding:0;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 32px));margin:0 auto}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.mobile-header{height:60px;display:grid;grid-template-columns:56px 1fr 88px;align-items:center;padding:0 12px;background:#fff}.desktop-header{display:none}.menu-button{width:42px;height:42px;border:0;background:#fff;padding:9px;display:flex;flex-direction:column;gap:5px;justify-content:center}.menu-button 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