:root{--primary-color: #4a5568;--bg-color: #f7fafc;--card-bg: #ffffff;--text-main: #2d3748;--text-muted: #718096;--border-color: #e2e8f0;--accent-color: #3182ce;--success-color: #38a169}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased}.app-container{max-width:600px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-color)}.header{background-color:var(--card-bg);padding:1rem;text-align:center;border-bottom:1px solid var(--border-color);box-shadow:0 1px 2px #0000000d;position:sticky;top:0;z-index:10}.header h1{font-size:1.2rem;color:var(--primary-color);margin-bottom:.2rem}.header p{font-size:.8rem;color:var(--text-muted)}.main-content{flex:1;padding:1.5rem 1rem;display:flex;flex-direction:column}.card{background-color:var(--card-bg);border-radius:12px;padding:1.5rem;box-shadow:0 4px 6px #0000000d;margin-bottom:1.5rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background-color:var(--primary-color);color:#fff;border:none;border-radius:8px;padding:1rem 1.5rem;font-size:1rem;font-weight:700;cursor:pointer;transition:background-color .2s,opacity .2s;width:100%}.button:active{opacity:.8}.button.outline{background-color:transparent;color:var(--primary-color);border:1px solid var(--primary-color)}.button.accent{background-color:var(--accent-color)}.button.success{background-color:var(--success-color)}.button:disabled{opacity:.5;cursor:not-allowed}.progress-bar{height:8px;background-color:var(--border-color);border-radius:4px;overflow:hidden;margin:1rem 0}.progress-bar-fill{height:100%;background-color:var(--accent-color);transition:width .3s ease}textarea{width:100%;min-height:150px;padding:1rem;font-size:1rem;border:1px solid var(--border-color);border-radius:8px;resize:vertical;font-family:inherit;line-height:1.6;margin-bottom:1rem;background-color:#f8fafc}textarea:focus{outline:none;border-color:var(--accent-color);background-color:#fff;box-shadow:0 0 0 2px #3182ce33}.q-category{font-size:.85rem;color:var(--accent-color);font-weight:700;margin-bottom:.5rem;display:inline-block;background-color:#3182ce1a;padding:.2rem .6rem;border-radius:12px}.q-text{font-size:1.2rem;font-weight:700;margin-bottom:1.5rem;line-height:1.5}.nav-buttons{display:flex;gap:1rem;margin-top:1rem}.nav-buttons .button{flex:1}.list-item{display:block;padding:1rem;border-bottom:1px solid var(--border-color);text-decoration:none;color:inherit}.list-item:active{background-color:#f1f5f9}.status-badge{font-size:.75rem;padding:.2rem .5rem;border-radius:10px;margin-left:.5rem}.status-badge.done{background-color:#e6fffa;color:#285e61}.status-badge.pending{background-color:#feebc8;color:#9c4221}.save-indicator{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background-color:#000000b3;color:#fff;padding:.5rem 1rem;border-radius:20px;font-size:.85rem;opacity:0;transition:opacity .3s;pointer-events:none;z-index:100}.save-indicator.visible{opacity:1}