/* Guide page */
.route-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}

.route-tab {
  padding: 12px 24px;
  border: 1.5px solid var(--color-border);
  border-radius: 30px;
  background: white;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.route-tab:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.route-tab.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(26, 92, 69, 0.25);
}

.route-detail {
  display: none;
  animation: fadeIn 0.4s ease;
}

.route-detail.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.route-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.route-map {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.map-svg {
  width: 100%;
  height: auto;
}

.map-point {
  cursor: pointer;
  transition: var(--transition);
}

.map-point:hover circle {
  r: 10;
  fill: var(--color-accent);
}

.map-point.active circle {
  fill: var(--color-accent);
  r: 10;
}

.map-point text {
  fill: var(--color-primary-dark);
  font-family: var(--font-sans);
}

.route-stops {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stop-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.stop-card:hover,
.stop-card.active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.stop-number {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.stop-info h4 {
  font-family: var(--font-serif);
  margin-bottom: 4px;
}

.stop-info p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Geography page */
.geo-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 40px;
  overflow: visible;
  scrollbar-width: none;
}

.geo-tabs::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.geo-panel,
.geo-content,
.geo-text,
#geo-panels,
.geography-no-scroll {
  overflow: visible !important;
  max-height: none !important;
}

/* 隐藏地理科普区域可能出现的系统滚动条（需求：去掉滑动控件） */
.geo-tabs,
.geo-panel,
.geo-content,
#geo-panels {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.geo-tabs::-webkit-scrollbar,
.geo-panel::-webkit-scrollbar,
.geo-content::-webkit-scrollbar,
#geo-panels::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.geo-tab {
  padding: 14px 24px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: var(--transition);
}

.geo-tab:hover,
.geo-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.geo-panel {
  display: none;
}

.geo-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

.geo-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.geo-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.geo-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.geo-text h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.geo-text p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
}

.geo-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.geo-fact {
  padding: 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--color-primary);
}

.geo-fact strong {
  display: block;
  color: var(--color-primary-dark);
  margin-bottom: 4px;
  font-size: 0.85rem;
}

.geo-fact span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-primary-light);
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
  padding: 20px;
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 24px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.timeline-item h4 {
  font-family: var(--font-serif);
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

/* Learn page */
.quiz-container {
  max-width: 720px;
  margin: 0 auto;
}

.quiz-progress {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
}

.quiz-dot {
  flex: 1;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  transition: var(--transition);
}

.quiz-dot.done {
  background: var(--color-primary);
}

.quiz-dot.current {
  background: var(--color-accent);
}

.quiz-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.quiz-meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.quiz-next {
  margin-top: 20px;
  width: 100%;
  justify-content: center;
  display: none;
}

.quiz-score span {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  -webkit-text-fill-color: var(--color-text-muted);
}

.quiz-result-text {
  color: var(--color-text-muted);
  margin: 16px 0 28px;
}

.result-video-thumb {
  position: relative;
  background: #000;
}

.result-video-thumb img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  opacity: 0.75;
}

.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
}

.result-text {
  white-space: pre-line;
  line-height: 1.8;
  font-size: 0.88rem;
}

.quiz-question {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 24px;
  color: var(--color-primary-dark);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quiz-option {
  padding: 16px 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  text-align: left;
  transition: var(--transition);
}

.quiz-option:hover {
  border-color: var(--color-primary-light);
  background: rgba(45, 106, 79, 0.04);
}

.quiz-option.correct {
  border-color: #2d6a4f;
  background: rgba(45, 106, 79, 0.1);
}

.quiz-option.wrong {
  border-color: #e76f51;
  background: rgba(231, 111, 81, 0.1);
}

.quiz-feedback {
  margin-top: 20px;
  padding: 16px;
  border-radius: var(--radius-sm);
  display: none;
}

.quiz-feedback.show {
  display: block;
}

.quiz-feedback.correct {
  background: rgba(45, 106, 79, 0.1);
  color: var(--color-primary-dark);
}

.quiz-feedback.wrong {
  background: rgba(231, 111, 81, 0.1);
  color: #c0392b;
}

.quiz-result {
  text-align: center;
  padding: 40px;
}

.quiz-result h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.quiz-score {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-serif);
}

.learn-modules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  margin-bottom: 60px;
}

.learn-module {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.learn-module:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.learn-module-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.learn-module-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.learn-module:hover .learn-module-cover img {
  transform: scale(1.06);
}

.learn-module-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 61, 46, 0.85) 0%, rgba(15, 61, 46, 0.2) 60%, transparent);
}

.learn-module-cover-text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  color: white;
  z-index: 1;
}

.learn-module-num {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  opacity: 0.7;
  display: block;
  margin-bottom: 4px;
}

.learn-module-cover-text h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin-bottom: 2px;
}

.learn-module-cover-text span:last-child {
  font-size: 0.8rem;
  opacity: 0.85;
}

.learn-module-body {
  padding: 20px 22px 24px;
}

.learn-module-body ul {
  list-style: none;
  padding: 0;
}

.learn-module-body li {
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.55;
}

.learn-module-body li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Studio page */
.studio-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: white;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: rgba(45, 106, 79, 0.04);
}

.upload-zone.has-image {
  padding: 16px;
  border-style: solid;
}

.upload-icon {
  margin-bottom: 16px;
  color: var(--color-primary);
  display: flex;
  justify-content: center;
}

.upload-icon svg {
  opacity: 0.7;
}

.upload-zone p {
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.upload-zone small {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.upload-preview {
  max-height: 300px;
  border-radius: var(--radius-sm);
  margin: 0 auto;
  object-fit: contain;
}

.studio-controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.control-group select,
.control-group input,
.control-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.control-group select:focus,
.control-group input:focus,
.control-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

.control-group textarea {
  resize: vertical;
  min-height: 80px;
}

.result-panel {
  margin-top: 40px;
  display: none;
}

.result-panel.show {
  display: block;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.result-item {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.result-item img,
.result-item video {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.result-item-body {
  padding: 16px;
}

.result-item-body h4 {
  font-family: var(--font-serif);
  margin-bottom: 8px;
}

.result-item-body p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.result-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.result-actions button {
  padding: 6px 12px;
  font-size: 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}

.result-actions button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.loading-overlay {
  display: none;
  text-align: center;
  padding: 40px;
}

.loading-overlay.show {
  display: block;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.gallery-section {
  margin-top: 60px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.gallery-item {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 50%, rgba(0,0,0,0.7));
  display: flex;
  align-items: flex-end;
  padding: 12px;
  color: white;
  font-size: 0.8rem;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.ai-steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

/* Village culture map with hotspots */
.village-map-wrap {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: #2a2a2a;
}

.village-map-img {
  display: block;
  width: 100%;
  height: auto;
}

.map-hotspot {
  position: absolute;
  display: block;
  border: 2px solid transparent;
  border-radius: 6px;
  transition: var(--transition);
  z-index: 2;
  cursor: pointer;
}

.map-hotspot:hover,
.map-hotspot:focus {
  border-color: #e53935;
  background: rgba(229, 57, 53, 0.18);
  outline: none;
}

/* Exact positions from map annotation boxes on culture-village-map.png (2801x1279) */
.hotspot-tianxianyu { left: 27.4%; top: 31.2%; width: 12.5%; height: 8.9%; }
.hotspot-beigou     { left: 42.5%; top: 48.9%; width: 9.9%;  height: 9.0%; }
.hotspot-mutianyu   { left: 58.5%; top: 53.7%; width: 13.0%; height: 10.6%; }
.hotspot-xinying    { left: 41.0%; top: 65.4%; width: 10.7%; height: 8.7%; }

.learn-modules-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

a.learn-module {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* Detail pages: villages / atlas / people */
.detail-hero {
  padding: calc(var(--header-height) + 48px) 0 40px;
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
}

.detail-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 12px 0 10px;
}

.detail-hero p {
  max-width: 720px;
  opacity: 0.9;
  line-height: 1.7;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.9rem;
}

.detail-back:hover {
  color: #fff;
}

.content-block {
  margin-bottom: 36px;
}

.content-block h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.content-block h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 20px 0 10px;
}

.content-block p,
.content-block li {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 10px;
}

.content-block ul {
  padding-left: 1.2em;
  margin-bottom: 12px;
}

.atlas-grid,
.people-grid,
.village-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.atlas-card,
.people-card,
.info-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.atlas-card img,
.people-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.atlas-card-body,
.people-card-body,
.info-card-body {
  padding: 18px 20px 22px;
}

.atlas-card h3,
.people-card h3,
.info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.atlas-card p,
.people-card p,
.info-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.people-card .people-role {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.atlas-note {
  font-size: 0.85rem;
  color: var(--color-earth);
  margin-top: 8px;
}

.content-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0 22px;
}

.content-gallery img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.learn-entry-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.learn-entry-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  padding: 24px;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.learn-entry-card:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .route-layout,
  .geo-content,
  .studio-layout,
  .ai-steps-grid {
    grid-template-columns: 1fr;
  }

  .route-map {
    position: static;
  }

  .geo-facts {
    grid-template-columns: 1fr;
  }

  .learn-modules-two,
  .learn-entry-panel {
    grid-template-columns: 1fr;
  }

  .content-gallery img {
    height: 160px;
  }

  .hotspot-tianxianyu,
  .hotspot-beigou,
  .hotspot-xinying,
  .hotspot-mutianyu {
    /* keep percentage boxes; do not enlarge on mobile or they overlap */
  }
}