:root{--ink:#142018;--muted:#667268;--canvas:#f6f5f0;--surface:#fffefa;--line:#dfe4d9;--accent:#176b48;--soft:#eaf3e9;--danger:#b44832;--danger-soft:#fbeae5;--unknown:#8b6500;--unknown-soft:#fff6dc}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;line-height:1.55}.shell{max-width:1100px;margin:auto;padding:48px 24px 80px}.topbar,.section-heading,.attempt header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.topbar{border-bottom:1px solid var(--line);padding-bottom:28px}.topbar-meta{display:flex;align-items:flex-end;gap:16px}.dday{min-width:180px;padding:9px 12px;border:1px solid #8fbda2;border-radius:10px;background:#edf8ef;text-align:right}.dday span,.dday small{display:block;color:#466550;font-size:.7rem;font-weight:700}.dday 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