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/* 行動裝置：讓橫向導覽僅在自身容器內捲動。 */
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/* 章節共用閱讀狀態；同一文件在學習清單與本週查讀保持一致。 */
.read-state{font-size:.8rem;margin-left:.35em;white-space:nowrap;color:var(--muted)}.read-state[data-status="閱讀中"]{color:#85620c}.read-state[data-status="已閱讀"]{color:var(--good)}.reading-item .read-state{display:block;margin-left:0}.reader-actions{padding:0 0 18px;margin-bottom:18px;border-bottom:1px solid var(--line)}.reader-actions>.read-state{margin-left:0}.resume>div{min-width:0}.resume .meta{margin-top:5px}.resume>.btn{flex-shrink:0}.resume-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px;font-size:.875rem}.resume-links a{overflow-wrap:anywhere}.diagnostic-done{font-size:.875rem;color:var(--good)}.task:focus{outline:3px solid #91a9d4;outline-offset:4px}.reading-item>span{min-width:0}.link-chip{overflow-wrap:anywhere}
@media(max-width:720px){.resume{flex-direction:column;gap:12px}.resume-links{flex-direction:column}}

/* 閱讀與練習整合於單一學習清單；深色區塊用於週初及週末檢核。 */
.weekly-plan{max-width:1120px;margin-inline:auto}.task-readings{margin:16px 0}.task h4{margin:0 0 9px;font-size:.9rem}.task-readings .link-chip{padding:9px 12px}.task .practice-count{margin:16px 0 9px}.task .task-success{margin-top:14px}.task.checkpoint,.task.checkpoint.done{background:var(--navy);border-color:var(--navy);color:#f4f7ff}.task.checkpoint h3,.task.checkpoint.done h3,.task.checkpoint h4,.task.checkpoint summary{color:#fff}.task.checkpoint p,.task.checkpoint .duration{color:#c7d5e9}.checkpoint-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:18px 0}.weekly-outline{padding-left:22px;margin:0;font-size:.9rem}.weekly-outline li{margin:7px 0}.weekly-outline a{color:#dbe7ff}.checkpoint-questions{margin:0!important}.checkpoint-questions ol{max-height:320px;overflow:auto;padding-left:23px}.checkpoint-questions li{margin-bottom:16px;color:#c7d5e9}.checkpoint-questions li>span{font-size:.75rem;color:#a9bdd9}.checkpoint-questions li p{margin-top:4px}.task.checkpoint .btn.quiet{background:#edf3ff;color:#254f9c}.task.checkpoint .diagnostic-done{color:#a1e5c5}.task.checkpoint .practice-complete{background:#e9f6ef}.task.checkpoint .actions{margin-top:16px}.task-readings .read-state{white-space:normal}
@media(max-width:720px){.checkpoint-columns{grid-template-columns:1fr;gap:18px}.task-readings .link-chip{width:100%;font-size:.875rem}.task-readings .read-state{display:block;margin-left:0}}

/* 閱讀與題組共用完成色彩、邊框、間距及圖示。 */
.btn.study-action{display:inline-flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 12px;border:1px solid var(--blue);border-radius:9px;font-size:.875rem;font-weight:500;line-height:1.65;text-align:left;background:#edf3ff;color:var(--blue)}
.btn.study-action:hover{background:#e0eaff;border-color:var(--blue)}
.btn.study-action.is-complete{background:var(--good-bg);color:var(--good);border-color:var(--good)}
.btn.study-action.is-complete:hover{background:#e3f2eb;border-color:var(--good)}
.btn.study-action .read-state{color:inherit;font:inherit;margin-left:0;white-space:normal}
.btn.study-action>span:first-child{min-width:0}.btn.study-action svg{flex:none}.reading-icon{display:inline-flex;flex:none}
.weeks .final-period{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr;gap:5px 18px;align-items:center;padding:12px 15px}.weeks .final-period progress{grid-column:1/-1;margin:0}.task-date{display:block;color:var(--blue);font-size:.875rem;margin-bottom:5px}.daily-steps{padding-left:22px;font-size:.9rem;color:var(--muted);margin:12px 0 18px}.daily-steps li{margin-bottom:8px}
@media(max-width:720px){.task .btn.study-action{width:100%}.task .study-action .read-state{display:inline}}

.weekly-plan .week-number{flex-shrink:0;white-space:nowrap}

/* 章節評量先作答再揭露解析；閱讀操作固定在正文之後。 */
.reader-actions{border-bottom:0;border-top:1px solid var(--line);padding:22px 0 0;margin:28px 0 0}.inline-exercise{border:1px solid var(--line);border-radius:12px;padding:20px;margin:22px 0;background:#fff}.inline-exercise .option-list{margin:16px 0}.inline-exercise .option{font:inherit}.inline-exercise .option .prose{display:block}.inline-exercise .option .prose p:last-child{margin-bottom:0}.inline-exercise .inline-explanation{margin-bottom:16px}.inline-exercise .inline-explanation>ul{padding-left:22px}.inline-exercise .feedback{font-weight:600}.reader-actions>.study-action{justify-content:center}
@media(max-width:720px){.inline-exercise{padding:14px}.reader-actions>.study-action{width:100%;justify-content:space-between}.reader-actions>.read-state{width:100%}}
.prose [data-math]{display:inline-block;max-width:100%;overflow-x:auto;vertical-align:middle}.prose [data-math][data-display="true"]{display:block}.prose [data-math] .katex-display{margin:.5em 0}

.review-group{border:1px solid var(--line);border-radius:10px;margin-top:12px;overflow:hidden}.review-group>summary{cursor:pointer;padding:16px 18px;background:#f4f7fc;overflow-wrap:anywhere}.review-source{font-weight:600}.review-group-count{display:block;margin:4px 0 0 20px;font-size:.8rem;color:var(--muted)}.review-group-body{padding:0 18px}.review-group[open]>summary{border-bottom:1px solid var(--line)}.review-group .review-item h3{font-size:1rem}.review-group .review-item{min-width:0}.review-group textarea{max-width:100%}

.btn.study-action.is-incorrect{background:var(--bad-bg);color:var(--bad);border-color:var(--bad)}.btn.study-action.is-incorrect:hover{background:#fce1e1;border-color:var(--bad)}

.stat.review-stat{text-align:left;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;width:100%}.review-stat>span{display:block}.review-stat:hover{border-color:var(--blue);background:#f4f7ff}.review-stat .foot{color:var(--blue)}.review-stat .foot svg{width:16px;height:16px}.period-progress-row{display:flex;justify-content:space-between;align-items:baseline;gap:6px;font-size:.8rem;margin-top:5px}.period-progress-row strong{font-size:1.1rem;color:var(--navy);font-variant-numeric:tabular-nums}.period-progress progress{height:4px;margin:3px 0 0}.period-progress .foot{margin-top:6px}.weeks .final-period .week-status{grid-column:1/-1;margin-top:0}@media(max-width:480px){.period-progress{padding:14px 12px}.period-progress-row{flex-wrap:wrap}.week .week-status{font-size:.7rem}}

.task-reviews{margin:18px 0}.task-reviews h4 small{font-size:.8rem;font-weight:400;color:var(--muted)}.task-reviews ul{padding-left:20px;margin:8px 0}.task-reviews li{margin:7px 0}.task-reviews a{font-size:.9rem;overflow-wrap:anywhere}