.rating-chart { min-width: 0; width: 100%; max-width: 600px; margin: 20px 0; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--text); }
.rating-chart h3 { margin: 0 0 14px; font-size: 18px; line-height: 1.3; }
.rating-chart > svg { display: block; width: 100%; height: auto; overflow: visible; }
.rating-chart .rating-chart-grid { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.rating-chart .rating-chart-line { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.rating-chart .rating-chart-dot { fill: var(--accent); stroke: var(--surface); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.rating-chart .rating-chart-label { fill: var(--muted); font: 12px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; }
.rating-chart .rating-chart-caption { margin: 8px 0; color: var(--text); font-size: 14px; line-height: 1.6; }
.rating-chart .rating-chart-note, .rating-chart .rating-chart-empty { margin: 10px 0 0; font-size: 13px; line-height: 1.6; color: var(--muted); }
.task-difficulty { min-width: 0; width: 100%; max-width: 480px; margin: 16px 0; padding: 0; border: 0; }
.task-difficulty > legend { margin: 0 0 8px; padding: 0; color: var(--text); font-size: 14px; font-weight: 650; }
.task-difficulty .task-difficulty-segments { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 3px; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-raised); }
.task-difficulty .task-difficulty-segments > button { display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 2px; width: 100%; min-width: 0; min-height: 48px; margin: 0; padding: 5px 4px; border: 0; border-radius: 7px; background: transparent; color: var(--text); font-size: 13px; line-height: 17px; font-weight: 650; box-shadow: none; transform: none; }
.task-difficulty .task-difficulty-segments > button[aria-pressed="true"] { background: var(--accent); color: var(--accent-text); }
.task-difficulty .task-difficulty-segments > button:active:not(:disabled) { box-shadow: none; transform: none; }
.task-difficulty .task-difficulty-segments > button > small { font-size: 11px; line-height: 14px; font-weight: 500; }
.task-difficulty .task-difficulty-note { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }