/* —— 学习平台：模块 → 章节卡片 —— */
.quest-page { padding: 1.75rem 0 3rem; }
.quest-head { margin-bottom: 1.75rem; }
.quest-head h1 {
  font-family: var(--font-display); font-size: clamp(1.7rem, 3.2vw, 2.2rem);
  margin: 0 0 0.5rem; font-weight: 700;
}
.quest-head p { margin: 0; color: var(--ink-soft); max-width: 40rem; }
.quest-crumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.5rem;
  font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 1rem;
}
.quest-crumb a { color: var(--accent-deep); text-decoration: none; font-weight: 500; }
.quest-crumb a:hover { text-decoration: underline; }
.quest-crumb .sep { opacity: 0.45; }

.quest-progress {
  display: flex; align-items: center; gap: 0.75rem; margin: 1rem 0 0;
  max-width: 28rem;
}
.quest-progress .progress-bar { flex: 1; height: 8px; }

.btn-sm {
  padding: 0.45rem 0.85rem; font-size: 0.85rem;
}

.sim-badge {
  display: inline-block; font-size: 0.7rem; font-weight: 700;
  padding: 0.15rem 0.45rem; border-radius: 4px;
  background: var(--amber); color: #fff;
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-left: 0.35rem;
}
.sim-badge.live {
  background: var(--accent);
}

.module-quest-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem;
}
.module-quest-card {
  position: relative; display: flex; flex-direction: column; gap: 0.75rem;
  padding: 1.35rem 1.35rem 1.2rem; border-radius: 18px; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: 0 6px 20px rgba(15,28,36,0.05);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
  min-height: 200px; overflow: hidden;
}
.module-quest-card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 5px;
  background: linear-gradient(180deg, var(--accent), var(--sky));
}
.module-quest-card:hover {
  transform: translateY(-4px); border-color: var(--accent);
  box-shadow: var(--shadow); text-decoration: none; color: inherit;
}
.module-quest-card .mq-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; }
.module-quest-card .mq-num {
  font-family: var(--font-display); font-size: 2rem; line-height: 1; color: var(--accent);
}
.module-quest-card .mq-badges {
  display: flex; flex-direction: column; align-items: flex-end; gap: 0.35rem;
}
.module-quest-card .mq-hours {
  font-size: 0.78rem; font-weight: 700; color: var(--amber);
  background: var(--amber-soft); padding: 0.25rem 0.6rem; border-radius: 999px;
  white-space: nowrap;
}
.module-quest-card .mq-status {
  display: none;
  font-size: 0.72rem; font-weight: 700; color: #fff; background: var(--accent);
  padding: 0.2rem 0.5rem; border-radius: 999px; white-space: nowrap;
}
.module-quest-card h3 { margin: 0; font-size: 1.05rem; line-height: 1.35; }
.module-quest-card .mq-meta { margin: 0; font-size: 0.86rem; color: var(--ink-soft); flex: 1; }
.module-quest-card .mq-go {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.88rem; font-weight: 700; color: var(--accent-deep);
}
.module-quest-card.done { border-color: #8bc4b0; }
.module-quest-card.done .mq-status { display: inline-block; }
.module-quest-card.passed { border-color: #5aa889; box-shadow: 0 6px 20px rgba(45, 120, 90, 0.12); }
.module-quest-card .mq-pass {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700; color: #fff; background: #2f7d5b;
  padding: 0.2rem 0.5rem; border-radius: 999px; white-space: nowrap;
}

.learner-bar,
.learner-bar input,
.learner-bar .learner-id-hint { display: none !important; }

.quiz-panel {
  margin-top: 1.75rem; padding: 1.25rem 1.35rem 1.4rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
}
.quiz-panel .quiz-head h2 {
  margin: 0 0 0.35rem; font-size: 1.2rem; font-family: var(--font-display);
}
.quiz-panel .quiz-head p { margin: 0 0 1rem; color: var(--ink-soft); font-size: 0.92rem; }
.quiz-pass-tag { color: #2f7d5b; }
.quiz-q {
  border: 1px solid var(--line); border-radius: 12px; padding: 0.85rem 1rem 0.95rem;
  margin: 0 0 0.85rem; background: #fff;
}
.quiz-q legend {
  font-weight: 700; padding: 0 0.25rem; margin-bottom: 0.35rem;
}
.quiz-choice {
  display: flex; gap: 0.55rem; align-items: flex-start;
  padding: 0.35rem 0.15rem; cursor: pointer; font-size: 0.92rem;
}
.quiz-choice input { margin-top: 0.25rem; }
.quiz-actions {
  display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-top: 0.5rem;
}
.quiz-result { font-weight: 700; }
.quiz-result.ok { color: #2f7d5b; }
.quiz-result.bad { color: #a33b2c; }
.quiz-detail { margin-top: 0.9rem; }
.quiz-detail-item {
  padding: 0.55rem 0.7rem; border-radius: 8px; margin-bottom: 0.45rem;
  background: #f7f2ec; font-size: 0.9rem;
}
.quiz-detail-item.ok { background: #e8f5ef; }
.quiz-detail-item.bad { background: #f8ebe8; }
[data-quiz-status].ok { color: #2f7d5b; font-weight: 700; }


.level-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.9rem;
}
.level-card {
  display: flex; flex-direction: column; gap: 0.55rem;
  padding: 1.15rem 1.2rem; border-radius: 16px; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
  position: relative;
}
.level-card:hover {
  transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow);
  text-decoration: none; color: inherit;
}
.level-card .lv-badge {
  width: 2.2rem; height: 2.2rem; border-radius: 10px;
  display: grid; place-items: center; font-weight: 800; font-size: 0.9rem;
  background: var(--accent-soft); color: var(--accent-deep);
}
.level-card h3 { margin: 0; font-size: 0.98rem; line-height: 1.4; }
.level-card .lv-hint { margin: 0; font-size: 0.8rem; color: var(--ink-soft); }
.level-card.done .lv-badge { background: var(--accent); color: #fff; }
.level-card.done { border-color: #9dceb9; }
.level-card .lv-done {
  display: none; margin-top: 0.15rem;
  font-size: 0.72rem; font-weight: 700; color: var(--accent-deep);
}
.level-card.done .lv-done { display: inline; }

.module-goals-panel {
  background: var(--sky-soft); border: 1px solid #b8d9e6; border-radius: 14px;
  padding: 1rem 1.2rem; margin-bottom: 1.5rem;
}
.module-goals-panel strong { color: var(--sky); display: block; margin-bottom: 0.4rem; }
.module-goals-panel ul { margin: 0; padding-left: 1.2rem; }

/* 章节内页 */
.level-shell { max-width: 880px; margin: 0 auto; padding: 1.25rem 1.25rem 3rem; }
.level-hero {
  background: linear-gradient(135deg, #0d5c4a 0%, #1a6b8a 100%);
  color: #e8f5f1; border-radius: 18px; padding: 1.35rem 1.5rem; margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}
.level-hero .lesson-meta { margin-bottom: 0.5rem; }
.level-hero .tag { background: rgba(255,255,255,0.18); color: #fff; }
.level-hero .tag.amber { background: rgba(255,212,140,0.25); color: #ffe6b8; }
.level-hero h1 {
  font-family: var(--font-display); font-size: clamp(1.4rem, 2.8vw, 1.85rem);
  margin: 0; font-weight: 700; color: #fff; line-height: 1.35;
}
.level-hero .back-link { display: inline-block; margin-top: 0.75rem; color: rgba(255,255,255,0.85); font-size: 0.88rem; }
.level-hero .back-link:hover { color: #fff; }

.zone {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  margin-bottom: 1rem; overflow: hidden;
}
.zone-head {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.85rem 1.15rem; border-bottom: 1px solid var(--line);
  font-weight: 700; font-size: 0.95rem;
}
.zone-head .zh-num {
  width: 1.65rem; height: 1.65rem; border-radius: 8px; display: grid; place-items: center;
  font-size: 0.78rem; font-weight: 800; color: #fff;
}
.zone-body { padding: 1.1rem 1.2rem 1.25rem; }
.zone-body > :first-child { margin-top: 0; }
.zone-body > :last-child { margin-bottom: 0; }
.zone-body h2 { font-size: 1.1rem; margin: 1.25rem 0 0.55rem; color: var(--accent-deep); border: 0; padding: 0; }
.zone-body .goals-box { margin: 0; border-radius: 10px; }
.zone-body .interact { margin: 0.85rem 0; }
.zone-body .interact:first-child { margin-top: 0; }
.zone-body .interact:last-child { margin-bottom: 0; }
.zone-body .figure { margin: 1rem 0; }
.zone-body .media-slot { margin: 0.75rem 0; }
.zone-body .mini-table {
  width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 1rem 0;
}
.zone-body .mini-table th, .zone-body .mini-table td {
  border: 1px solid var(--line); padding: 0.5rem 0.65rem; text-align: left;
}
.zone-body .mini-table th { background: var(--accent-soft); color: var(--accent-deep); }
.zone-body .hint { font-size: 0.88rem; color: var(--ink-soft); }

/* 练习互动：步骤在上，助手在下可折叠 */
.practice-hub {
  border: 1px solid #e0d4c6;
  border-radius: 16px;
  background: linear-gradient(180deg, #fbf7f2 0%, #fff 42%);
  overflow: hidden;
}
.practice-hub .ph-main { padding: 1.1rem 1.15rem 0.35rem; }
.practice-hub .ph-step {
  margin: 0 0 1rem;
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  border: 1px solid transparent;
}
.practice-hub .ph-step.think { background: var(--amber-soft); border-color: #f0d9a8; }
.practice-hub .ph-step.discuss { background: var(--sky-soft); border-color: #b8d9e6; }
.practice-hub .ph-step.note { background: #f5f0eb; border-color: #e0d4c6; }
.practice-hub .ph-step.try { background: var(--accent-soft); border-color: #a8d9c8; }
.practice-hub .ph-step-label {
  display: block; font-size: 0.82rem; font-weight: 800;
  color: #6b4a32; margin-bottom: 0.45rem; letter-spacing: 0.02em;
}
.practice-hub .ph-step.discuss .ph-step-label { color: var(--sky); }
.practice-hub .ph-step.try .ph-step-label { color: var(--accent-deep); }
.practice-hub .ph-step p { margin: 0 0 0.65rem; }
.practice-hub .ph-step textarea {
  width: 100%; min-height: 88px; margin: 0;
  border-radius: 10px; border: 1px solid var(--line);
  padding: 0.65rem 0.75rem; font-family: inherit; resize: vertical;
  background: rgba(255,255,255,0.92);
}
.practice-hub .ph-step .actions { margin-top: 0.65rem; }
.practice-hub .ph-main .interact {
  margin: 0 0 1rem; box-shadow: none;
}
.practice-hub .ph-coach {
  margin-top: 0;
  border-top: 1px dashed #d7c8b6;
  background: #f0ebe4;
}
.practice-hub .ph-coach-toggle {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  gap: 0.75rem; padding: 0.85rem 1.15rem; border: 0; background: transparent;
  font: inherit; font-weight: 700; color: #5a4030; cursor: pointer; text-align: left;
}
.practice-hub .ph-coach-toggle:hover { background: rgba(255,255,255,0.35); }
.practice-hub .ph-coach-toggle-hint {
  font-size: 0.8rem; font-weight: 600; color: var(--ink-soft);
}
.practice-hub .ph-coach.is-collapsed .ph-coach-body { display: none; }
.practice-hub .ph-coach-body { padding: 0 1.15rem 1.15rem; }
.practice-hub .ph-coach-tools {
  display: grid; grid-template-columns: minmax(10rem, auto) 1fr; gap: 0.55rem;
  margin-bottom: 0.75rem; align-items: stretch;
}
.practice-hub .ph-coach-tools .btn,
.practice-hub .ph-coach-tools select { min-height: 2.5rem; }
.practice-hub .ph-coach-tools select {
  width: 100%; padding: 0.5rem 0.65rem; border-radius: 10px;
  border: 1px solid var(--line); font-family: inherit; background: #fff;
}
.practice-hub .ph-coach .chat-sim {
  min-height: 160px; max-height: 360px; margin: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 0.75rem 0.85rem; overflow-y: auto;
}
.practice-hub .ph-coach-input {
  display: grid; grid-template-columns: auto 1fr auto; gap: 0.5rem;
  margin-top: 0.75rem; align-items: center;
}
.practice-hub .ph-coach-input input {
  width: 100%; margin: 0; min-height: 2.5rem; padding: 0.55rem 0.7rem;
  border-radius: 10px; border: 1px solid var(--line); font-family: inherit; background: #fff;
}
@media (max-width: 640px) {
  .practice-hub .ph-coach-tools { grid-template-columns: 1fr; }
  .practice-hub .ph-coach-input { grid-template-columns: 1fr; }
  .practice-hub .ph-coach .chat-sim { min-height: 200px; max-height: 50vh; }
}

.zone.goal .zone-head { background: #e8f4fb; color: var(--sky); }
.zone.goal .zh-num { background: var(--sky); }
.zone.know .zone-head { background: var(--accent-soft); color: var(--accent-deep); }
.zone.know .zh-num { background: var(--accent); }
.zone.case .zone-head { background: var(--amber-soft); color: #8a5508; }
.zone.case .zh-num { background: var(--amber); }
.zone.practice .zone-head { background: #f3e9e0; color: #6b4a32; }
.zone.practice .zh-num { background: #8a5a3c; }

.level-actions {
  display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: space-between;
  align-items: center; margin-top: 1.35rem; padding: 1rem 0 0; border-top: 1px solid var(--line);
}
.level-actions-nav {
  display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; flex: 1;
}
.level-actions .btn-done {
  min-width: 8.5rem; font-weight: 700;
  box-shadow: 0 4px 14px rgba(13, 122, 95, 0.22);
}
.level-actions .btn-done[aria-pressed="true"] {
  background: var(--accent-soft); color: var(--accent-deep); border-color: var(--accent);
  box-shadow: none;
}

.path-rail {
  display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0.85rem 0 0;
}
.path-rail a {
  display: inline-flex; align-items: center; gap: 0.35rem;
  min-height: 1.9rem; padding: 0.2rem 0.55rem 0.2rem 0.3rem;
  border-radius: 999px; text-decoration: none;
  background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.88);
  border: 1px solid rgba(255,255,255,0.22); font-size: 0.78rem; font-weight: 600;
  max-width: 100%;
}
.path-rail a .pr-num {
  width: 1.35rem; height: 1.35rem; border-radius: 999px;
  display: grid; place-items: center; font-size: 0.72rem; font-weight: 800;
  background: rgba(255,255,255,0.2); flex-shrink: 0;
}
.path-rail a .pr-title {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 7.5rem;
}
.path-rail a:hover {
  background: rgba(255,255,255,0.28); color: #fff; text-decoration: none;
}
.path-rail a.current {
  background: #fff; color: var(--accent-deep); border-color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}
.path-rail a.current .pr-num { background: var(--accent); color: #fff; }
.path-rail a.done {
  background: rgba(232,245,241,0.92); color: var(--accent-deep);
  border-color: rgba(232,245,241,0.95);
}
.path-rail a.done .pr-num { background: #2f7d5b; color: #fff; }

.zone-nav {
  position: sticky; top: 3.4rem; z-index: 30;
  display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 1rem;
  padding: 0.45rem; background: rgba(243,246,244,0.94);
  border: 1px solid var(--line); border-radius: 12px;
  backdrop-filter: blur(10px);
}
.zone-nav a {
  flex: 1 1 auto; text-align: center; min-width: 4.2rem;
  padding: 0.4rem 0.55rem; border-radius: 8px;
  font-size: 0.84rem; font-weight: 700; color: var(--ink-soft);
  text-decoration: none; background: transparent;
}
.zone-nav a:hover { background: var(--accent-soft); color: var(--accent-deep); text-decoration: none; }
.zone-nav a.is-active { background: var(--accent); color: #fff; }

.zone-body .mini-table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.zone-body .mini-table { min-width: 28rem; }

.mini-table {
  width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem;
}
.mini-table th, .mini-table td {
  border: 1px solid var(--line); padding: 0.55rem 0.7rem; text-align: left;
}
.mini-table th { background: var(--accent-soft); color: var(--accent-deep); }
.mini-table tr:nth-child(even) td { background: #f7faf8; }

@media (max-width: 640px) {
  .module-quest-grid, .level-grid { grid-template-columns: 1fr; }
  .level-shell { padding: 1rem 0.85rem 2.5rem; }
  .path-rail a .pr-title { max-width: 5.5rem; }
  .zone-nav { top: 3.1rem; }
  .level-actions { flex-direction: column-reverse; align-items: stretch; }
  .level-actions .btn-done { width: 100%; }
}