:root{font-family:Nunito,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#17355f;background:#dff5ff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--sky: #48b9f5;--sky-soft: #dff5ff;--blue: #1e8ee8;--blue-dark: #1766b3;--green: #2ec46f;--green-dark: #17934c;--yellow: #ffd25b;--orange: #ff8c3a;--coral: #ff6f7f;--pink: #ff6aa5;--purple: #8f63e9;--surface: rgba(255, 255, 255, .94);--surface-strong: #ffffff;--text: #17355f;--muted: #6b7c98;--border: #bde6ff;--shadow: 0 18px 40px rgba(32, 126, 189, .18);--radius: 22px}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 10% 10%,rgba(255,220,91,.34),transparent 18%),radial-gradient(circle at 90% 8%,rgba(62,197,126,.28),transparent 18%),linear-gradient(180deg,#caefff,#edfaff 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