*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #faf9f6;--surface: #ffffff;--text: #2c2c2c;--text-secondary: #666;--border: #e0ddd8;--accent: #6C8EBF;--accent-hover: #5a7aa8;--radius: 12px;--shadow: 0 2px 8px rgba(0, 0, 0, .06)}body{font-family:Noto Sans JP,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;font-family:inherit}input,textarea{font-family:inherit;font-size:inherit}.container{max-width:640px;margin:0 auto;padding:24px 16px}.home{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;text-align:center;gap:24px}.home h1{font-size:2.2rem;font-weight:700;letter-spacing:-.5px}.home p{color:var(--text-secondary);font-size:1.05rem;max-width:360px}.btn-primary{background:var(--accent);color:#fff;font-size:1rem;font-weight:500;padding:14px 36px;border-radius:var(--radius);transition:background .2s}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.list-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.list-header h1{font-size:1.4rem;font-weight:700}.share-btn{background:var(--surface);border:1px solid var(--border);padding:8px 16px;border-radius:var(--radius);font-size:.85rem;color:var(--text-secondary);transition:all .2s}.share-btn:hover{border-color:var(--accent);color:var(--accent)}.add-form{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:24px;display:flex;flex-direction:column;gap:12px}.add-form .row{display:flex;gap:12px}.add-form input,.add-form textarea{flex:1;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg);font-size:.95rem;outline:none;transition:border-color .2s}.add-form input:focus,.add-form textarea:focus{border-color:var(--accent)}.add-form textarea{resize:vertical;min-height:60px}.add-form .name-input{max-width:140px}.add-form .submit-row{display:flex;justify-content:flex-end}.btn-add{background:var(--accent);color:#fff;padding:10px 28px;border-radius:8px;font-size:.95rem;font-weight:500;transition:background .2s}.btn-add:hover{background:var(--accent-hover)}.btn-add:disabled{opacity:.5}.members-bar{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.member-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:500;color:#fff;cursor:pointer;transition:opacity .2s}.member-chip:hover{opacity:.85}.color-dot{width:10px;height:10px;border-radius:50%;background:currentColor}.contribution-list{display:flex;flex-direction:column;gap:10px}.contribution-card{background:var(--surface);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow);border-left:4px solid var(--accent);display:flex;flex-direction:column;gap:6px;position:relative}.contribution-card .card-header{display:flex;align-items:center;justify-content:space-between}.contribution-card .name{font-weight:700;font-size:.9rem}.contribution-card .time{font-size:.75rem;color:var(--text-secondary)}.contribution-card .task{font-size:1rem;font-weight:500}.contribution-card .memo{font-size:.85rem;color:var(--text-secondary)}.contribution-card .delete-btn{position:absolute;top:8px;right:8px;background:none;color:var(--text-secondary);font-size:.8rem;padding:4px 8px;border-radius:4px;opacity:0;transition:opacity .2s,color .2s}.contribution-card:hover .delete-btn{opacity:1}.contribution-card .delete-btn:hover{color:#d6604d}.color-picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;display:flex;align-items:center;justify-content:center;z-index:100}.color-picker{background:var(--surface);border-radius:var(--radius);padding:24px;box-shadow:0 8px 32px #00000026;min-width:240px}.color-picker h3{margin-bottom:16px;font-size:1rem}.color-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.color-swatch{width:40px;height:40px;border-radius:50%;border:3px solid transparent;cursor:pointer;transition:border-color .2s,transform .15s}.color-swatch:hover{transform:scale(1.15)}.color-swatch.selected{border-color:var(--text)}.empty-state{text-align:center;padding:48px 16px;color:var(--text-secondary)}.empty-state .icon{font-size:3rem;margin-bottom:12px}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--text);color:#fff;padding:10px 24px;border-radius:8px;font-size:.85rem;z-index:200;animation:fadeInUp .3s ease}@keyframes fadeInUp{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--text-secondary);font-size:1rem}