:root{--bg: #f6f6f8;--card: #ffffff;--text: #1c1c22;--muted: #6b6b76;--line: #e3e3e8;--accent: #4f46e5;--accent-text: #ffffff;--warn-bg: #fff7e0;--warn-text: #7a5a00;--err-bg: #fdecec;--err-text: #a12020;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #131317;--card: #1c1c22;--text: #ececf1;--muted: #9a9aa6;--line: #2e2e36;--accent: #818cf8;--accent-text: #0f0f14;--warn-bg: #3a3014;--warn-text: #f2d48a;--err-bg: #3d1a1a;--err-text: #f4a9a9}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Apple SD Gothic Neo,Noto Sans KR,sans-serif}.page{max-width:760px;margin:0 auto;padding:32px 16px 48px}.sub{margin:4px 0 20px;color:var(--muted)}h2{font-size:16px;margin:0 0 12px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:16px}textarea,select,input[type=range]{width:100%;font:inherit;color:inherit}textarea,select{background:var(--bg);border:1px solid 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