:root{--primary:rgb(216,232,242);--primary-strong:#8fb4cc;--deep:#0b2d45;--deep2:#133d5a;--light:#f4f9fc;--line:#d9e8f2;--muted:#647483;--text:#0e1820;--card:#fff;--gray:#f5f6f8;--shadow:0 14px 34px rgba(16,52,76,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;background:#fff;color:var(--text);line-height:1.75;overflow-x:hidden}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 #edf2f5;position:sticky;top:0;z-index:20}.mobile-header{height:64px;display:grid;grid-template-columns:44px 1fr auto;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;cursor:pointer}.menu-button 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