:root{color-scheme:light;--ink:#15231d;--muted:#66756d;--line:#dce5df;--paper:#ffffff;--panel:#f4f8f5;--brand:#176b4b;--brand-dark:#0f4934;--brand-soft:#e2f1e9;--accent:#f1ad45;font-family:Pretendard,Noto Sans KR,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:#eef3ef;color:var(--ink)}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}.demo-shell{min-height:100vh;display:grid;grid-template-columns:minmax(280px,1fr) minmax(360px,460px);align-items:center;grid-gap:clamp(32px,7vw,108px);gap:clamp(32px,7vw,108px);padding:clamp(24px,6vw,80px);background:radial-gradient(circle at 15% 10%,rgba(241,173,69,.18),transparent 30%),linear-gradient(135deg,#f7faf8,#e4eee8)}.demo-copy{max-width:640px}.eyebrow{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.18em}.demo-copy h1{margin:18px 0;font-size:clamp(42px,6vw,78px);line-height:1.04;letter-spacing:-.055em}.demo-copy 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