:root{--primary:rgb(176,219,245);--primary-dark:#155b8d;--blue:#0b2f55;--blue2:#1d6b9f;--light:#f3f9fd;--line:#d7edf9;--text:#1b2733;--muted:#657383;--white:#fff;--shadow:0 14px 38px rgba(18,64,100,.09);--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:#f8fbfe;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 #e9f3fa;position:sticky;top:0;z-index:20}.mobile-header{height:64px;display:grid;grid-template-columns:70px 1fr 88px;align-items:center;padding:0 14px;background:#fff}.menu-button{width:42px;height:42px;border:0;background:#eef7fc;border-radius:12px;display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center}.menu-button 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