:root{--primary:rgb(176, 219, 245);--primary-dark:#246b92;--deep:#0d2d44;--text:#17212b;--muted:#637282;--light:#f3f9fd;--line:#d9edf8;--card:#ffffff;--shadow:0 14px 38px rgba(13,45,68,.08);--radius:20px}*{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:1.7}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:50}.mobile-header{height:62px;display:grid;grid-template-columns:48px 1fr 76px;align-items:center;padding:0 14px;background:#fff}.menu-button{width:42px;height:42px;border:0;background:#fff;border-radius:12px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 10px}.menu-button 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