.color-swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
        .swatch-item { border-radius: 12px; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,0.08); transition: transform 0.2s, box-shadow 0.2s; background: white; border: 1px solid #f0f0f0; cursor: pointer; }
        .swatch-item:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
        .swatch-color { height: 100px; width: 100%; }
        .swatch-info { padding: 0.75rem; }
        .swatch-name { font-weight: 600; font-size: 1rem; margin-bottom: 0.2rem; font-family: 'Noto Sans JP', 'Hiragino Sans', sans-serif; }
        .swatch-romaji { font-size: 0.8rem; color: #6c757d; margin-bottom: 0.2rem; font-style: italic; }
        .swatch-hex { font-family: 'Courier New', monospace; font-size: 0.8rem; background: #f5f5f5; display: inline-block; padding: 0.2rem 0.4rem; border-radius: 4px; }
        .filter-section { background-color: #f8f9fc; border-radius: 16px; padding: 1.2rem; margin-bottom: 1.5rem; border: 1px solid #e9ecef; }
        .season-badge { background-color: white; border-radius: 40px; padding: 0.4rem 1rem; border: 1px solid #dee2e6; font-weight: 500; transition: all 0.2s; cursor: pointer; color: #495057; }
        .season-badge.active { background-color: #0d6efd; color: white; border-color: #0d6efd; }
        .season-badge.spring { border-left: 5px solid #F596AA; }
        .season-badge.summer { border-left: 5px solid #2E8B57; }
        .season-badge.autumn { border-left: 5px solid #C76A3D; }
        .season-badge.winter { border-left: 5px solid #5989B3; }
        .kasane-preview { display: flex; height: 40px; width: 100%; border-radius: 20px; overflow: hidden; margin: 0.5rem 0; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
        .kasane-layer { flex: 1; }
        .copy-feedback { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background-color: #333; color: white; padding: 8px 20px; border-radius: 40px; font-size: 0.9rem; z-index: 9999; opacity: 0; transition: opacity 0.3s; pointer-events: none; }
        .cultural-note { background: #f0f7fa; border-left: 4px solid #2E8B57; padding: 1rem; margin: 1.5rem 0; border-radius: 0 12px 12px 0; }
        .accent-text { color: #a34e3c; font-weight: 500; }
        .stat-badge { background: white; padding: 0.2rem 0.8rem; border-radius: 20px; border: 1px solid #ced4da; }
        .legend { display: flex; justify-content: center; gap: 2rem; margin: 0.5rem 0; font-size: 0.9rem; }
        .legend-item { display: flex; align-items: center; gap: 0.3rem; }
        .legend-color { width: 16px; height: 16px; border-radius: 50%; }