/* 
   🌿 初生之木 · 萌芽之声 (Sprout & Melody)
   大自然清新风配色与设计系统 (Botanical Nature Fresh Style)
*/

:root {
  --primary: #3E6B48;
  --primary-light: #52825C;
  --primary-dark: #2A4C32;
  --primary-soft: #EAF3EC;
  --primary-faint: #F4F8F4;

  --accent-earth: #D98852;
  --accent-gold: #E5A93B;
  --accent-warm: #F7EFE5;
  --accent-pink: #F8ECE8;

  --bg-page: #FAF8F5;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #FFFFFF;

  --text-main: #2C3E35;
  --text-muted: #5E7166;
  --text-light: #8E9F96;

  --border-subtle: #E2ECE5;
  --border-card: #EBF1EC;

  --shadow-sm: 0 2px 8px rgba(42, 76, 50, 0.04);
  --shadow-md: 0 8px 24px rgba(42, 76, 50, 0.07);
  --shadow-lg: 0 16px 36px rgba(42, 76, 50, 0.1);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-pill: 9999px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(82, 130, 92, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(217, 136, 82, 0.03) 0%, transparent 40%);
  background-attachment: fixed;
}

/* 顶部导航栏 */
.nature-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-25px);
  background: #25422B;
  color: #FFFFFF;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 12px 32px rgba(37, 66, 43, 0.35);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  max-width: 90%;
  line-height: 1.5;
  border: 1px solid #4A7A54;
}

.nature-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 245, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--primary-dark);
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, #4A7C55 0%, #2A4C32 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(42, 76, 50, 0.15);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--primary-dark);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* 顶部导航选项卡 */
.nav-tabs {
  display: flex;
  gap: 6px;
  background: rgba(234, 243, 236, 0.7);
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
}

.nav-btn {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn:hover {
  color: var(--primary-dark);
}

.nav-btn.active {
  background: #FFFFFF;
  color: var(--primary-dark);
  box-shadow: 0 2px 8px rgba(42, 76, 50, 0.08);
}

.lan-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--accent-warm);
  border: 1px solid #EFE4D6;
  color: #9C5A2B;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.lan-badge:hover {
  background: #F4E8DB;
}

/* 主内容容器 */
.main-content {
  max-width: 1200px;
  margin: 28px auto 80px;
  padding: 0 20px;
}

/* 顶部温馨问候横幅 */
.welcome-banner {
  background: linear-gradient(135deg, #F0F6F1 0%, #E7EFE8 50%, #F5F1EB 100%);
  border: 1px solid #DFECE1;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  position: relative;
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.banner-decor {
  position: absolute;
  right: -20px;
  bottom: -20px;
  font-size: 140px;
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
}

.banner-content h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.banner-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 650px;
}

.banner-actions {
  display: flex;
  gap: 12px;
}

.nature-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  color: var(--primary-dark);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
  transition: all 0.2s;
}

.nature-btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-faint);
}

.nature-btn-disabled {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: #F3F5F4 !important;
  border: 1px dashed #CDD6D0 !important;
  color: #A3AFA8 !important;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: not-allowed !important;
  box-shadow: none !important;
  transition: all 0.2s;
}

.nature-btn-disabled:hover {
  background: #EAECEB !important;
  border-color: #B8C4BC !important;
}

/* 卡片与组件体系 */
.nature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #DAE6DD;
}

/* 标签体系 */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-classical {
  background: #EBF3ED;
  color: #2E5A36;
}

.badge-pentatonic {
  background: #F8EFE3;
  color: #9C6326;
}

.badge-folk {
  background: #E8F5F1;
  color: #1F6B58;
}

.badge-jazz {
  background: #F5ECF4;
  color: #7D3E74;
}

.badge-green {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

/* 每日主打音乐推荐横幅卡片 */
.daily-music-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #FBFDFB 100%);
  border: 2px solid #D6E6D9;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  margin-bottom: 40px;
}

.daily-music-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent-earth) 100%);
}

.daily-badge-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: #EAF3EC;
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}

.music-headline {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 8px;
  line-height: 1.3;
}

.music-artist-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.music-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--primary-faint);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Apple Music 播放器集成卡片 */
.apple-music-wrapper {
  background: #FDFBF8;
  border: 1px solid #EFE8DE;
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.apple-music-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  background: #FA243C;
  color: #FFFFFF;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(250, 36, 60, 0.2);
}

.apple-music-btn:hover {
  background: #E0182E;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(250, 36, 60, 0.28);
}

/* 音乐深度赏析四象限 */
.music-deep-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.deep-box {
  background: #FAFBF9;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all 0.2s;
}

.deep-box:hover {
  background: #FFFFFF;
  border-color: #D2E4D6;
}

.deep-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.deep-content {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 自然白噪音发生器小浮条 */
.nature-ambient-bar {
  background: linear-gradient(135deg, #F3F7F4 0%, #E9F2EC 100%);
  border: 1px solid #D5E5DA;
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ambient-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.ambient-chip {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  border: 1px solid #DFECE1;
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.ambient-chip:hover {
  border-color: var(--primary);
}

.ambient-chip.active {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(62, 107, 72, 0.25);
}

/* 音乐分类切换过滤药丸 */
.genre-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.genre-filter-btn {
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.genre-filter-btn:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
}

.genre-filter-btn.active {
  background: var(--primary-dark);
  color: #FFFFFF;
  border-color: var(--primary-dark);
}

/* 音乐网格列表 */
.music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.track-item-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
  cursor: pointer;
}

.track-item-card:hover {
  transform: translateY(-3px);
  border-color: #CFE2D3;
  box-shadow: var(--shadow-md);
}

/* 哺乳喂养板块：交互计时器与记事器 */
.feeding-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 36px;
}

@media (max-width: 850px) {
  .feeding-hero-grid {
    grid-template-columns: 1fr;
  }
}

.timer-box {
  background: linear-gradient(135deg, #FFFFFF 0%, #FAFBF9 100%);
  border: 1px solid #DFECE1;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.timer-digits {
  font-size: 3.2rem;
  font-weight: 800;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
  margin: 16px 0;
}

.breast-switch-group {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.breast-btn {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--border-subtle);
  background: #FFFFFF;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.breast-btn.active {
  background: var(--primary-soft);
  color: var(--primary-dark);
  border-color: var(--primary);
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.ctrl-btn {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  border: none;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ctrl-btn-primary {
  background: var(--primary);
  color: #FFFFFF;
}

.ctrl-btn-primary:hover {
  background: var(--primary-dark);
}

.ctrl-btn-outline {
  background: #F5F7F5;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.ctrl-btn-outline:hover {
  background: #EAEFEA;
}

/* 奶量计算器卡片 */
.calc-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

/* 喂养与排泄步进计数器组件 */
.baby-stat-steppers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

@media (max-width: 600px) {
  .baby-stat-steppers {
    grid-template-columns: 1fr;
  }
}

.stepper-item {
  background: #F9FAF8;
  border: 1px solid #E5EFE7;
  border-radius: 14px;
  padding: 12px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}

.stepper-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.stepper-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 6px;
}

.stepper-action-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid #D5E4D8;
  background: #FFFFFF;
  color: var(--primary-dark);
  font-size: 1.15rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.03);
  user-select: none;
}

.stepper-action-btn:hover {
  background: var(--primary-soft);
  border-color: var(--primary-light);
  transform: scale(1.08);
}

.stepper-action-btn.minus-btn {
  color: #7D8C82;
}

.stepper-action-btn.plus-btn {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.stepper-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-dark);
  min-width: 36px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.stepper-subtext {
  font-size: 0.72rem;
  color: var(--text-light);
}

.bottle-record-btn {
  margin-top: 4px;
  padding: 5px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--primary-dark);
  border: 1px solid var(--primary-light);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.bottle-record-btn:hover {
  background: var(--primary);
  color: #fff;
}

/* 时间轴明细清单 */
.today-timeline-wrapper {
  background: #FDFEFC;
  border: 1px dashed #D6E4DA;
  border-radius: 12px;
  padding: 12px;
  margin-top: 6px;
}

.timeline-items-box {
  max-height: 140px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #FFFFFF;
  border: 1px solid #EAF1EC;
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 0.82rem;
}

.timeline-item-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-item-time {
  font-weight: 700;
  color: var(--primary-dark);
  background: #F0F6F2;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.timeline-delete-btn {
  background: none;
  border: none;
  color: #C0CCC4;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all 0.2s;
}

.timeline-delete-btn:hover {
  color: #E05252;
  background: #FDF0F0;
}

/* 美化的瓶喂弹窗 */
.bottle-modal-content {
  max-width: 420px !important;
  padding: 24px;
  border-radius: 20px !important;
  background: #FAFBF9;
}

.bottle-type-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  justify-content: center;
}

.type-pill-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid #DCE7E0;
  background: #FFFFFF;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.type-pill-btn.active {
  background: var(--primary-soft);
  color: var(--primary-dark);
  border-color: var(--primary);
}

.bottle-amount-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 16px 0;
}

.bottle-step-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid #D0DFD4;
  background: #FFFFFF;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  user-select: none;
}

.bottle-step-btn:hover {
  background: var(--primary-soft);
}

.bottle-amount-number {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.bottle-amount-number input {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary-dark);
  width: 90px;
  text-align: center;
  border: none;
  background: transparent;
  outline: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.bottle-amount-number .unit {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.bottle-presets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.preset-pill {
  padding: 8px;
  border-radius: 10px;
  border: 1px solid #DFE8E2;
  background: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.preset-pill:hover, .preset-pill.active {
  background: var(--primary-faint);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.calc-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: #FAF8F5;
  font-size: 1rem;
  color: var(--text-main);
  outline: none;
  transition: border 0.2s;
}

.calc-input:focus {
  border-color: var(--primary);
  background: #FFFFFF;
}

.calc-result-box {
  background: linear-gradient(135deg, #F0F7F2 0%, #E7EFE9 100%);
  border: 1px solid #D7E7DA;
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 14px;
  text-align: center;
}

.calc-result-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-dark);
}

/* 知识折叠面板与标签网格 */
.knowledge-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--border-subtle);
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.k-tab {
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  margin-bottom: -6px;
  transition: all 0.2s;
}

.k-tab:hover {
  color: var(--primary-dark);
}

.k-tab.active {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}

/* 图解卡片 */
.illustrated-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 20px;
}

.pos-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 4px solid var(--primary-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.pos-card-img {
  width: 100%;
  height: 195px;
  object-fit: cover;
  border-radius: 10px;
  display: block;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.pos-card-img:hover {
  transform: scale(1.02);
}

.pos-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 月龄选择按钮横向滑动条 */
.milestone-age-bar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 6px 2px 16px;
  margin-bottom: 24px;
}

.age-chip {
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.age-chip:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.age-chip.active {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(62, 107, 72, 0.2);
}

/* 辅食添加红黑榜 */
.food-rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

@media (max-width: 768px) {
  .food-rules-grid {
    grid-template-columns: 1fr;
  }
}

.forbidden-box {
  background: #FDF4F3;
  border: 1px solid #F5DBD7;
  border-radius: var(--radius-md);
  padding: 22px;
}

.recommended-box {
  background: #F2F8F4;
  border: 1px solid #D8EADE;
  border-radius: var(--radius-md);
  padding: 22px;
}

/* 爸爸任务卡片打卡项 */
.dad-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 20px;
}

.dad-task-item {
  background: linear-gradient(135deg, #FFFFFF 0%, #FAFBF9 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 22px;
  position: relative;
  transition: all 0.2s;
}

.dad-task-item:hover {
  border-color: #D3E5D7;
  box-shadow: var(--shadow-sm);
}

/* 弹窗/模态框 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(30, 48, 36, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 32px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: #F4F7F4;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.2rem;
  transition: all 0.2s;
}

.modal-close-btn:hover {
  background: #E5EDE6;
  color: var(--text-main);
}

/* 底部状态栏与版权 */
.site-footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  background: rgba(250, 248, 245, 0.9);
}

/* 移动端沉浸式优化 */
@media (max-width: 640px) {
  .header-container {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .nav-tabs {
    width: 100%;
    overflow-x: auto;
  }
  .nav-btn {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  .welcome-banner {
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .banner-actions {
    width: 100%;
  }
  .daily-music-card {
    padding: 20px;
  }
  .music-headline {
    font-size: 1.3rem;
  }
  .timer-digits {
    font-size: 2.5rem;
  }
}