:root{--main:rgb(176,219,245);--deep:#0c3158;--blue:#1f6fa8;--light:#eef8ff;--line:#d7edf9;--gray:#667085;--dark:#101828;--soft:#f6f8fb}*{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(--dark);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 #eef2f6;position:sticky;top:0;z-index:50}.mobile-top{height:64px;display:grid;grid-template-columns:52px 1fr 82px;align-items:center;padding:0 14px}.menu-toggle{width:42px;height:42px;border:0;background:#fff;display:flex;flex-direction:column;gap:5px;justify-content:center}.menu-toggle span{display:block;width:22px;height:2px;background:var(--deep);border-radius:3px}.mobile-logo img{height:34px;margin:0 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