:root{--ink:#10233f;--muted:#607087;--blue:#1769e0;--blue2:#eaf3ff;--line:#d9e5f2;--green:#0e9f78;--bg:#f7f9fc;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:white;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}.header{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid 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