/* ========== 育儿图书馆 V2 样式表 ========== */

:root {
  --primary: #4a90d9;
  --primary-dark: #2d6cb5;
  --primary-light: #6ba8e8;
  --accent: #f5a623;
  --accent-light: #ffd089;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-soft: #eef4fb;
  --text-main: #2c3e50;
  --text-secondary: #5a6c7d;
  --text-light: #8a9ba8;
  --border: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(74, 144, 217, 0.08);
  --shadow-md: 0 4px 20px rgba(74, 144, 217, 0.12);
  --shadow-lg: 0 8px 40px rgba(74, 144, 217, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ========== Hero (compact, softened) ========== */
.hero {
  background: linear-gradient(135deg, #4a90d9 0%, #6ba8e8 50%, #87ceeb 100%);
  padding: 28px 20px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  opacity: 0.85;
}
.hero::before {
  content: ''; position: absolute; top: -40%; right: -8%;
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; bottom: -40%; left: -8%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(245,166,35,0.08) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 900px; margin: 0 auto; }
.hero-icon { font-size: 36px; margin-bottom: 6px; display: inline-block; opacity: 0.8; }
.hero h1 {
  color: #fff; font-size: 28px; font-weight: 700;
  margin-bottom: 6px; text-shadow: 0 1px 12px rgba(0,0,0,0.12);
  letter-spacing: 1px;
}
.hero h1 .sub {
  font-size: 15px; font-weight: 400; opacity: 0.85;
  display: block; margin-top: 4px; letter-spacing: 0.5px;
}
.hero-desc {
  color: rgba(255,255,255,0.75); font-size: 13px;
  max-width: 600px; margin: 0 auto 12px; line-height: 1.6;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 10px; }
.hero-tag {
  background: rgba(255,255,255,0.15); backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.2); color: rgba(255,255,255,0.85);
  padding: 3px 12px; border-radius: 16px; font-size: 11px; font-weight: 500;
}

/* ========== Philosophy (compact strip) ========== */
.philosophy { max-width: 1200px; margin: -12px auto 0; padding: 0 20px; position: relative; z-index: 2; }
.philosophy-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 12px 20px; box-shadow: var(--shadow-sm);
  display: flex; align-items: center; justify-content: center; gap: 6px;
  flex-wrap: wrap; opacity: 0.75;
}
.philo-item {
  text-align: center; padding: 6px 10px; border-radius: var(--radius-sm);
  transition: var(--transition); flex-shrink: 0;
}
.philo-item:hover { background: var(--bg-soft); }
.philo-icon { font-size: 22px; margin-bottom: 2px; }
.philo-title { font-size: 13px; font-weight: 700; color: var(--primary-dark); margin-bottom: 2px; }
.philo-desc { font-size: 11px; color: var(--text-light); line-height: 1.4; }
.philo-arrow { font-size: 16px; color: var(--primary-light); align-self: center; flex-shrink: 0; }

/* ========== Global Timeline Section ========== */
.global-timeline-section {
  max-width: 1200px; margin: 12px auto 0; padding: 0 20px;
}
.global-timeline-inner {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow-sm);
}
.global-timeline-inner .timeline-wrapper {
  background: transparent; box-shadow: none; padding: 0; margin-bottom: 0;
}
.global-timeline-inner .timeline-range { margin-top: 8px; }

/* ========== Main Tabs ========== */
.main-tabs {
  max-width: 1200px; margin: 12px auto 0; padding: 0 20px;
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
}
.main-tab {
  padding: 10px 22px; border-radius: 12px; border: 2px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 15px; font-weight: 700;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
  display: flex; align-items: center; gap: 6px;
}
.main-tab:hover { border-color: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.main-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 16px rgba(74, 144, 217, 0.35);
}

/* ========== Panel Container ========== */
.panel { max-width: 1200px; margin: 16px auto 0; padding: 0 20px 60px; display: none; }
.panel.active { display: block; }

/* ========== Timeline (shared) ========== */
.timeline-wrapper {
  background: var(--bg-card); border-radius: var(--radius); padding: 14px 16px;
  box-shadow: var(--shadow-sm); margin-bottom: 10px; overflow-x: auto;
}
.timeline-label { font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 8px; }
.timeline {
  display: flex; gap: 4px; min-width: max-content; padding-bottom: 6px;
}
.timeline-node {
  flex-shrink: 0; width: 64px; text-align: center; cursor: pointer;
  padding: 10px 4px; border-radius: 12px; transition: var(--transition);
  position: relative;
}
.timeline-node:hover { background: var(--bg-soft); }
.timeline-node.active { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.timeline-node.active .tl-icon,
.timeline-node.active .tl-age,
.timeline-node.active .tl-stage { color: #fff; }
.tl-icon { font-size: 22px; display: block; }
.tl-age { font-size: 13px; font-weight: 700; color: var(--text-main); margin-top: 4px; }
.tl-stage { font-size: 10px; color: var(--text-light); margin-top: 2px; }
.timeline-range {
  font-size: 14px; color: var(--text-light); margin-top: 12px; text-align: center;
}
.timeline-range strong { color: var(--primary-dark); }

/* ========== Controls (Library Panel) ========== */
.controls { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.controls-inner {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow-sm);
}
.control-label { font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 10px; }
.tab-group { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.tab-btn {
  padding: 10px 22px; border-radius: 12px; border: 2px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 15px; font-weight: 600;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.tab-btn:hover { border-color: var(--primary-light); color: var(--primary); transform: translateY(-1px); }
.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border-color: transparent; box-shadow: 0 4px 14px rgba(74, 144, 217, 0.35);
}
.sub-tab-group { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.sub-tab-btn {
  padding: 6px 16px; border-radius: 20px; border: 1.5px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.sub-tab-btn:hover { border-color: var(--accent); color: var(--accent); }
.sub-tab-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff; border-color: transparent; box-shadow: 0 3px 10px rgba(245, 166, 35, 0.3);
}
.search-box {
  width: 100%; padding: 12px 20px 12px 44px; border: 2px solid var(--border);
  border-radius: 12px; font-size: 15px; color: var(--text-main);
  background: var(--bg-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%238a9ba8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E") 14px center no-repeat;
  transition: var(--transition);
}
.search-box:focus { outline: none; border-color: var(--primary); background-color: #fff; box-shadow: 0 0 0 4px rgba(74, 144, 217, 0.1); }
.result-count { font-size: 14px; color: var(--text-light); margin-top: 14px; padding-left: 4px; }
.result-count strong { color: var(--primary-dark); font-size: 16px; }

/* ========== Library Grid ========== */
.library-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 20px; margin-top: 24px; }
.book-card {
  background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition);
  display: flex; flex-direction: column; border: 1px solid var(--border);
  opacity: 0; transform: translateY(20px); animation: fadeInUp 0.5s ease forwards;
}
@keyframes fadeInUp { to { opacity: 1; transform: translateY(0); } }
.book-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--primary-light); }
.card-header {
  padding: 20px 24px 16px; background: linear-gradient(135deg, var(--bg-soft) 0%, #fff 100%);
  border-bottom: 1px solid var(--border); position: relative;
}
.card-type-badge {
  position: absolute; top: 16px; right: 16px; padding: 4px 12px;
  border-radius: 20px; font-size: 12px; font-weight: 600; color: #fff;
}
.type-绘本, .type-益智玩具 { background: #ff7eb3; }
.type-书籍 { background: var(--primary); }
.type-动画 { background: #ff6b6b; }
.type-纪录片 { background: #51cf66; }
.type-TED { background: #e8590c; }
.card-title { font-size: 19px; font-weight: 700; color: var(--text-main); margin-bottom: 6px; padding-right: 60px; line-height: 1.4; }
.card-meta { font-size: 13px; color: var(--text-light); line-height: 1.6; }
.card-meta span { margin-right: 12px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.card-tag { font-size: 11px; padding: 3px 10px; border-radius: 12px; font-weight: 600; }
.tag-age { background: #e3f2fd; color: #1565c0; }
.tag-cat { background: #fff3e0; color: #e65100; }
.tag-source { background: #e8f5e9; color: #2e7d32; }
.tag-recommend-age { background: #f3e5f5; color: #7b1fa2; }
.card-body { padding: 18px 24px 20px; flex: 1; display: flex; flex-direction: column; }
.card-review { font-size: 14px; color: var(--text-secondary); line-height: 1.75; flex: 1; }
.card-review::before { content: '"'; font-size: 28px; color: var(--primary-light); line-height: 0; position: relative; top: 8px; margin-right: 4px; }
.card-footer {
  padding: 12px 24px 16px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-light);
}
.no-results { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-light); }
.no-results .icon { font-size: 48px; margin-bottom: 16px; }

/* ========== Gender Toggle ========== */
.gender-toggle {
  display: flex; gap: 8px; margin-bottom: 20px; justify-content: center;
}
.gender-btn {
  padding: 8px 24px; border-radius: 20px; border: 2px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 14px; font-weight: 700;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.gender-btn:hover { border-color: var(--primary-light); color: var(--primary); }
.gender-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border-color: transparent;
  box-shadow: 0 3px 12px rgba(74, 144, 217, 0.3);
}
.gender-btn[data-gender="boy"].active {
  background: linear-gradient(135deg, #4a90d9, #6ba8e8);
}
.gender-btn[data-gender="girl"].active {
  background: linear-gradient(135deg, #ff7eb3, #ff9ec7);
}

/* ========== Psychology Panel ========== */
.psy-intro {
  background: linear-gradient(135deg, #fff5f5, #fff); border-radius: var(--radius);
  padding: 20px 24px; box-shadow: var(--shadow-sm); margin-bottom: 16px;
  border-left: 4px solid var(--accent);
}
.psy-intro h3 { font-size: 18px; color: var(--text-main); margin-bottom: 8px; }
.psy-intro p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.psy-experts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.psy-expert-tag {
  background: var(--bg-soft); padding: 4px 12px; border-radius: 12px;
  font-size: 12px; font-weight: 600; color: var(--primary-dark);
}
.psy-timeline-wrapper { overflow-x: auto; margin-bottom: 24px; }
.psy-timeline { display: flex; gap: 4px; min-width: max-content; padding: 8px 0; }
.psy-tl-node {
  flex-shrink: 0; padding: 10px 14px; border-radius: 12px; cursor: pointer;
  transition: var(--transition); border: 2px solid var(--border); background: #fff;
  text-align: center; min-width: 90px;
}
.psy-tl-node:hover { border-color: var(--primary-light); }
.psy-tl-node.active { background: linear-gradient(135deg, var(--accent), var(--accent-light)); border-color: transparent; color: #fff; }
.psy-tl-node .psy-tl-range { font-size: 13px; font-weight: 700; }
.psy-tl-node .psy-tl-icon { font-size: 20px; display: block; }
.psy-cards { display: grid; gap: 20px; }
.psy-card {
  background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
  opacity: 0; transform: translateY(20px); animation: fadeInUp 0.5s ease forwards;
}
.psy-card-header {
  padding: 24px 28px 20px; color: #fff; position: relative;
}
.psy-card-header h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.psy-card-header .psy-stage { font-size: 14px; opacity: 0.9; }
.psy-card-header .psy-icon { font-size: 36px; position: absolute; top: 20px; right: 24px; opacity: 0.4; }
.psy-card-body { padding: 24px 28px; }
.psy-section { margin-bottom: 20px; }
.psy-section:last-child { margin-bottom: 0; }
.psy-section-title {
  font-size: 14px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
}
.psy-section-content { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.psy-section-content ul { padding-left: 20px; }
.psy-section-content li { margin-bottom: 4px; }
.psy-theory-box {
  background: linear-gradient(135deg, #f0f7ff, #fff); border-radius: var(--radius-sm);
  padding: 16px 20px; border-left: 4px solid var(--primary);
  margin-top: 8px;
}
.psy-theory-box .psy-section-content { color: var(--text-main); }
.psy-advice-box {
  background: linear-gradient(135deg, #fff8e1, #fff); border-radius: var(--radius-sm);
  padding: 16px 20px; border-left: 4px solid var(--accent);
  margin-top: 8px;
}
.psy-advice-box .psy-section-content { color: var(--text-main); }

/* ========== School Panel ========== */
.school-intro {
  background: linear-gradient(135deg, #f0f7ff, #fff); border-radius: var(--radius);
  padding: 28px 32px; box-shadow: var(--shadow-sm); margin-bottom: 24px;
  border-left: 5px solid var(--primary);
}
.school-intro h3 { font-size: 20px; color: var(--text-main); margin-bottom: 10px; }
.school-intro p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.school-filter {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px;
}
.school-filter-btn {
  padding: 8px 18px; border-radius: 20px; border: 1.5px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.school-filter-btn:hover { border-color: var(--primary-light); }
.school-filter-btn.active {
  background: var(--primary); color: #fff; border-color: transparent;
  box-shadow: 0 3px 10px rgba(74, 144, 217, 0.25);
}
.school-group {
  background: var(--bg-card); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); margin-bottom: 24px; overflow: hidden;
  border: 1px solid var(--border);
}
.school-group-header {
  padding: 20px 28px; background: linear-gradient(135deg, var(--bg-soft), #fff);
  border-bottom: 1px solid var(--border);
}
.school-group-header h3 { font-size: 18px; font-weight: 700; color: var(--text-main); }
.school-group-header .school-type-tag {
  display: inline-block; font-size: 12px; background: var(--primary); color: #fff;
  padding: 3px 10px; border-radius: 10px; margin-left: 8px; vertical-align: middle;
}
.school-group-header .school-list-name { font-size: 14px; color: var(--text-secondary); margin-top: 6px; }
.school-group-header .school-source { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.school-books-table { padding: 8px 0; }
.school-book-row {
  display: flex; align-items: flex-start; padding: 12px 28px;
  border-bottom: 1px solid var(--border); transition: var(--transition);
}
.school-book-row:last-child { border-bottom: none; }
.school-book-row:hover { background: var(--bg-soft); }
.school-book-info { flex: 1; }
.school-book-title { font-size: 15px; font-weight: 600; color: var(--text-main); }
.school-book-author { font-size: 13px; color: var(--text-light); margin-top: 2px; }
.school-book-note { font-size: 12px; color: var(--text-light); margin-top: 2px; }
.school-book-age {
  flex-shrink: 0; background: #e3f2fd; color: #1565c0;
  padding: 4px 12px; border-radius: 10px; font-size: 12px; font-weight: 700;
  margin-left: 12px; white-space: nowrap;
}

/* ========== Ability Map Panel ========== */
.ability-intro {
  background: linear-gradient(135deg, #f0fff4, #fff); border-radius: var(--radius);
  padding: 20px 24px; box-shadow: var(--shadow-sm); margin-bottom: 16px;
  border-left: 4px solid #51cf66;
}
.ability-intro h3 { font-size: 18px; color: var(--text-main); margin-bottom: 8px; }
.ability-intro p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.ability-filter {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px;
}
.ability-filter-btn {
  padding: 8px 18px; border-radius: 20px; border: 1.5px solid var(--border);
  background: #fff; color: var(--text-secondary); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.ability-filter-btn:hover { border-color: #51cf66; color: #51cf66; }
.ability-filter-btn.active {
  background: linear-gradient(135deg, #51cf66, #69db7c); color: #fff; border-color: transparent;
  box-shadow: 0 3px 10px rgba(81, 207, 102, 0.3);
}
.ability-grid {
  display: grid; grid-template-columns: 1fr; gap: 24px;
}
.ability-card {
  background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
  opacity: 0; transform: translateY(20px); animation: fadeInUp 0.5s ease forwards;
}
.ability-card-header {
  padding: 20px 24px 16px; color: #fff; position: relative;
}
.ability-card-header h3 { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.ability-card-header .ability-core { font-size: 13px; opacity: 0.9; }
.ability-card-header .ability-icon-big { font-size: 36px; position: absolute; top: 16px; right: 20px; opacity: 0.35; }
.ability-card-body { padding: 0; }
.ability-stage {
  display: flex; gap: 0; align-items: stretch;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.ability-stage:last-child { border-bottom: none; }
.ability-stage:hover { background: var(--bg-soft); }
.ability-stage-tag {
  flex-shrink: 0; width: 130px; padding: 16px 14px; text-align: center;
  border-right: 1px solid var(--border); display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.ability-stage-tag .as-icon { font-size: 24px; margin-bottom: 4px; }
.ability-stage-tag .as-stage { font-size: 14px; font-weight: 800; color: var(--text-main); }
.ability-stage-tag .as-focus { font-size: 11px; color: var(--text-light); margin-top: 4px; line-height: 1.4; }
.ability-stage-content { flex: 1; padding: 16px 20px; }
.ability-stage-content .as-abilities {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px;
}
.ability-stage-content .as-ability-tag {
  background: #e8f5e9; color: #2e7d32; padding: 3px 10px; border-radius: 10px;
  font-size: 12px; font-weight: 600;
}
.ability-stage-content .as-emphasis {
  font-size: 13px; color: var(--text-secondary); line-height: 1.7;
  background: #f0f7ff; border-radius: 8px; padding: 10px 14px;
  border-left: 3px solid var(--primary);
}

/* ========== Footer ========== */
.footer {
  background: linear-gradient(135deg, #2c3e50, #34495e);
  color: rgba(255,255,255,0.7); padding: 40px 20px; text-align: center; font-size: 13px; line-height: 1.8;
}
.footer a { color: var(--primary-light); text-decoration: none; }
.footer-quote { font-size: 15px; color: rgba(255,255,255,0.9); margin-bottom: 12px; font-style: italic; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .hero { padding: 20px 14px 16px; }
  .hero h1 { font-size: 22px; letter-spacing: 0.5px; }
  .hero h1 .sub { font-size: 13px; }
  .hero-desc { font-size: 12px; margin-bottom: 8px; }
  .hero-icon { font-size: 28px; }
  .hero-tag { font-size: 10px; padding: 2px 10px; }
  .philosophy-card { padding: 8px 12px; gap: 4px; }
  .philo-item { padding: 4px 6px; }
  .philo-icon { font-size: 18px; }
  .philo-title { font-size: 11px; }
  .philo-desc { font-size: 9px; }
  .philo-arrow { font-size: 12px; }
  .main-tab { padding: 8px 14px; font-size: 13px; }
  .controls-inner { padding: 14px 14px; }
  .tab-btn { padding: 8px 16px; font-size: 13px; }
  .sub-tab-btn { padding: 5px 12px; font-size: 12px; }
  .search-box { font-size: 14px; padding: 10px 16px 10px 40px; }
  .library-grid { grid-template-columns: 1fr; gap: 16px; }
  .card-title { font-size: 17px; }
  .card-review { font-size: 13px; }
  .card-header, .card-body, .card-footer { padding-left: 16px; padding-right: 16px; }
  .psy-card-header, .psy-card-body { padding: 18px 16px; }
  .psy-card-header h3 { font-size: 18px; }
  .school-book-row { padding: 10px 16px; flex-wrap: wrap; }
  .school-book-age { margin-left: 0; margin-top: 6px; }
  .ability-stage { flex-direction: column; }
  .ability-stage-tag { width: 100%; border-right: none; border-bottom: 1px solid var(--border); padding: 12px; }
  .ability-stage-content { padding: 12px 14px; }
  .timeline-node { width: 56px; }
  .tl-icon { font-size: 18px; }
  .tl-age { font-size: 12px; }
  .tl-stage { font-size: 9px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 20px; }
  .hero-desc { display: none; }
  .hero-tags { gap: 4px; }
  .hero-tag { font-size: 9px; padding: 2px 8px; }
  .philosophy-card { padding: 6px 8px; }
  .philo-arrow { display: none; }
  .main-tab { padding: 6px 10px; font-size: 12px; }
  .library-grid { gap: 14px; }
  .card-meta span { display: block; margin-right: 0; }
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-soft); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }