:root{--bg-start: #0f172a;--bg-end: #0a3a49;--card-bg: rgba(255, 255, 255, .9);--border: rgba(255, 255, 255, .25);--primary: #0ea5e9;--primary-dark: #0284c7;--text-main: #0b1221;--muted: #5f7188}*{box-sizing:border-box}body{font-family:Noto Sans KR,system-ui,-apple-system,sans-serif;min-height:100vh;margin:0;display:flex;justify-content:center;align-items:center;padding:32px 16px;background:radial-gradient(circle at 15% 20%,rgba(255,159,243,.25),transparent 32%),radial-gradient(circle at 80% 12%,rgba(56,189,248,.18),transparent 30%),radial-gradient(circle at 10% 80%,rgba(255,214,102,.22),transparent 32%),radial-gradient(circle at 85% 75%,rgba(34,197,94,.16),transparent 28%),linear-gradient(135deg,#f8fbff,#f4f7ff);color:var(--text-main)}#container{width:100%;max-width:720px;background:var(--card-bg);padding:2.5rem 2rem;border-radius:18px;border:1px solid var(--border);box-shadow:0 20px 60px 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