:root{--brand:#0b63f6;--brand-dark:#0647bf;--brand-soft:#eaf2ff;--ink:#0b1220;--muted:#5e6b7c;--line:#dfe7f1;--surface:#fff;--surface-alt:#f5f8fc;--success:#0c9b6c;--radius-lg:28px;--radius-md:20px;--shadow:0 22px 70px rgba(24,50,88,.1);--container:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;color-scheme:light}body{margin:0;color:var(--ink);background:#fff;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:clip}body:before{position:fixed;inset:0;z-index:-1;pointer-events:none;content:"";background:radial-gradient(circle at 85% 5%,rgba(38,139,255,.12),transparent 32%),radial-gradient(circle at 5% 28%,rgba(100,207,255,.09),transparent 28%)}a{color:inherit;text-decoration:none}button,input,select,textarea{max-width:100%;font:inherit}button{cursor:pointer}img{display:block;max-width:100%;height:auto}.container{width:min(calc(100% - 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