:root{--red:rgb(213,5,5);--dark:#161616;--text:#3a3a3a;--muted:#6c6c6c;--line:#e8e8e8;--soft:#f7f7f7;--lightred:#fff1f1;--deepred:#a80000}*{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;background:#fff;color:var(--text);line-height:1.72}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1220px,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:62px;display:grid;grid-template-columns:72px 1fr 86px;align-items:center;padding:0 14px;background:#fff}.menu-button{width:42px;height:42px;border:0;background:#fff;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 8px}.menu-button span{display:block;height:2px;background:#222;border-radius:2px}.mobile-logo{justify-self:center}.mobile-logo 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