:root{--catchday-blue: #1090e5;--catchday-white: #ffffff;--blue-50: #e6f4fc;--blue-100: #cce9f9;--blue-200: #99d3f3;--blue-300: #66bded;--blue-600: #0d73b8;--blue-700: #0a568a;--blue-800: #073a5c;--blue-900: #031d2e;--gray-900: #1a1a1a;--gray-600: #666666;--gray-400: #999999;--gray-200: #e5e5e5;--gray-100: #f5f5f5}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;color:var(--gray-900);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 24px}.header{position:fixed;top:0;left:0;right:0;background:var(--catchday-white);border-bottom:1px solid 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img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.flip-card:hover .flip-card-image img{transform:scale(1.05)}.flip-card-content{padding:12px 16px;display:flex;gap:12px;align-items:center;flex-shrink:0}.flip-badge{flex-shrink:0;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}.flip-badge-before{background:var(--gray-300, #d1d5db);color:var(--gray-600)}.flip-badge-after{background:var(--catchday-blue);color:var(--catchday-white)}.flip-card-content p{font-size:14px;line-height:1.5;margin:0}.flip-card-front .flip-card-content p{color:var(--gray-600)}.flip-card-back .flip-card-content p{color:var(--blue-900);font-weight:500}.flip-hint{position:absolute;bottom:12px;right:12px;width:28px;height:28px;background:#0000001a;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--gray-600);transition:opacity .3s ease}.flip-card.flipped 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