:root{--bg:#F3FBFF;--white:#fff;--tint:#F8FCFF;--line:#E2F4FD;--blue:#22AEEA;--deep:#147FB8;--text:#34465C;--muted:#5C6F82;--soft:#8797A9;--border:rgba(34,174,234,.12);--shadow:0 16px 38px rgba(31,133,184,.12);--grad:linear-gradient(135deg,#45C9F5 0%,#22AEEA 52%,#168ED4 100%)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;padding-top:119px}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}.wrap{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{position:fixed;left:0;right:0;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.logo 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