/* ============================================================
   中医学习工具平台 - 统一设计系统 V2.0
   统一圆角 · 间距 · 字号 · 动画 · 组件
   ============================================================ */

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 15px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--parchment);
  color: var(--text);
  min-height: 100vh;
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--duration-slow), color var(--duration-slow);
}

/* --- Color System --- */
:root {
  /* 朱砂色系 */
  --cinnabar: #8B0000;
  --cinnabar-lt: #C41E3A;
  --cinnabar-dk: #5C0000;
  --cinnabar-50: #FDF2F0;
  --cinnabar-100: #F8D7D0;

  /* 古铜金色系 */
  --gold: #D4A574;
  --gold-lt: #E8D5B0;
  --gold-dk: #BF8C35;
  --gold-50: #FEF8F0;
  --gold-100: #FAEEDA;

  /* 松柏绿 */
  --pine: #2D5A27;
  --pine-lt: #4A7A44;
  --pine-50: #EEF5EC;
  --pine-100: #C8DDC3;

  /* 艾草绿 */
  --mugwort: #5B8C5A;
  --mugwort-50: #F0F7EF;
  --mugwort-100: #D0E5CF;

  /* 赭石色 */
  --ochre: #CC7722;
  --ochre-50: #FBF3E8;
  --ochre-100: #F5DFC0;

  /* 靛青色 */
  --indigo: #3B4A7A;
  --indigo-50: #EEF0F5;
  --indigo-100: #C8CFDD;

  /* 宣纸色系 */
  --parchment: #F5F0E6;
  --parchment-dk: #EDE6D8;
  --parchment-card: #FCFAF6;
  --parchment-card-hv: #F8F4EC;

  /* 语义色 */
  --green: #2E7D32;
  --green-lt: #4CAF50;
  --green-50: #E8F5E9;
  --red: #C62828;
  --red-lt: #EF5350;
  --red-50: #FFEBEE;
  --orange: #E65100;
  --orange-50: #FFF3E0;
  --blue: #1565C0;
  --blue-lt: #42A5F5;
  --blue-50: #E3F2FD;
  --purple: #6A1B9A;
  --purple-50: #F3E5F5;

  /* 功能性 */
  --text: #2C2416;
  --text-mid: #5C5446;
  --text-light: #9B8F80;
  --border: #E0D5C5;
  --border-lt: #EDE6D8;
  --border-hv: #D0C5B5;
  --shadow: 0 2px 10px rgba(92,82,72,0.08);
  --shadow-lg: 0 4px 24px rgba(92,82,72,0.12);
  --shadow-hover: 0 8px 32px rgba(92,82,72,0.16);

  /* 圆角 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* 补充变量 */
  --ink: var(--text);
  --cinnabar-glow: rgba(139, 0, 0, 0.15);
  --cinnabar-light: #F8D7D0;
  --border-warm: var(--border);
  --text-tertiary: var(--text-light);
  --text-muted: var(--text-light);
  --bg-warm: var(--parchment);
  --surface: var(--parchment-card);
  --surface-warm: var(--parchment-card-hv);
  --bg-hv: var(--parchment-card-hv);
  --success-light: #E8F5E9;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
  --font-kai: 'LXGW WenKai', 'KaiTi', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;

  /* 操作分级色 */
  --level-basic: #4A7A44;
  --level-clinical: #CC7722;
  --level-danger: #C62828;

  /* 标准间距 (8px基准) */
  --space-2xs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* 阴影层级 */
  --shadow-0: none;
  --shadow-1: 0 1px 3px rgba(92,82,72,0.06);
  --shadow-2: 0 2px 8px rgba(92,82,72,0.08);
  --shadow-3: 0 4px 16px rgba(92,82,72,0.10);
  --shadow-4: 0 8px 32px rgba(92,82,72,0.12);
  --shadow-5: 0 16px 48px rgba(92,82,72,0.16);

  /* 动画时长 */
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;

  /* 缓动曲线 */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* 字号体系 */
  --text-2xs: 0.625rem;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;

  /* 行高 */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* 字重 */
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* 工具兼容别名 (各工具 :root 中常用变量名) */
  --primary: var(--cinnabar);
  --primary-light: var(--cinnabar-lt);
  --primary-dark: var(--cinnabar-dk);
  --primary-bg: var(--parchment);
  --accent: var(--gold);
  --bg: var(--parchment);
  --bg-card: var(--parchment-card);
  --surface: var(--parchment-card);
  --surface-warm: var(--parchment-card-hv);
  /* --text and --border already defined above */
  --text-secondary: var(--text-mid);
  --green: #2E7D32;
  --red: #C62828;
  --orange: #E65100;
  --blue: #1565C0;
  --purple: #6A1B9A;
  --success: #2E7D32;
  --success-bg: #E8F5E9;
  --danger: #C62828;
  --danger-bg: #FFEBEE;
  --warning: #E65100;
  --warning-bg: #FFF3E0;
  --info: #1565C0;
  --info-bg: #E3F2FD;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --radius-md: var(--radius);
  --xs: var(--space-xs);
  --sm: var(--space-sm);
  --md: var(--space-md);
  --lg: var(--space-lg);
  --xl: var(--space-2xl);
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  --content-max: 1100px;
  --content-px: 24px;
}

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --parchment: #1C1A18;
    --parchment-dk: #141210;
    --parchment-card: #262320;
    --parchment-card-hv: #322E2A;
    --text: #E8E0D8;
    --text-mid: #A09890;
    --text-light: #706860;
    --border: #3A3430;
    --border-lt: #2E2A26;
    --border-hv: #4A4440;
    --cinnabar: #D44038;
    --cinnabar-lt: #E86050;
    --cinnabar-dk: #A02018;
    --cinnabar-50: #2E1814;
    --cinnabar-100: #3E2018;
    --gold: #C89858;
    --gold-lt: #D8B078;
    --gold-50: #2E2418;
    --gold-100: #3E3018;
    --green: #3D8B40;
    --green-lt: #58B860;
    --blue: #3580D0;
    --red: #E04848;
    --orange: #E86820;
    --purple: #8050A0;
    --shadow: 0 2px 10px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-hover: 0 8px 32px rgba(0,0,0,0.5);

    /* 工具兼容别名 (暗色模式) */
    --primary: var(--cinnabar);
    --primary-light: var(--cinnabar-lt);
    --primary-dark: var(--cinnabar-dk);
    --primary-bg: var(--parchment);
    --accent: var(--gold);
    --bg: var(--parchment);
    --bg-card: var(--parchment-card);
    --surface: var(--parchment-card);
    --surface-warm: var(--parchment-card-hv);
    --text: #E8E0D8;
    --text-secondary: var(--text-mid);
    --border: #3A3430;
    --shadow-sm: none;
    --shadow-md: none;
  }
}

/* --- Reset + Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  background: var(--parchment);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s, color 0.3s;
}

/* --- Header Component --- */
.header {
  background: linear-gradient(135deg, var(--cinnabar-dk), var(--cinnabar));
  color: #fff;
  padding: 20px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -20%;
  width: 140%;
  height: 140%;
  background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.header h1 {
  font-family: var(--font-serif);
  font-size: 1.5em;
  font-weight: 700;
  letter-spacing: 3px;
  position: relative;
  z-index: 1;
}

.header .subtitle {
  font-family: var(--font-kai);
  font-size: 0.85em;
  opacity: 0.85;
  margin-top: 6px;
  position: relative;
  z-index: 1;
}

.header .disclaimer {
  font-size: 0.7em;
  opacity: 0.75;
  margin-top: 10px;
  line-height: 1.5;
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Card Component --- */
.card {
  background: var(--parchment-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-2);
  transition: box-shadow var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-3);
  border-color: var(--border-hv);
}

.card:active {
  transform: scale(0.99);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--cinnabar);
  margin-bottom: 8px;
}

.card-sub {
  font-size: 0.85rem;
  color: var(--text-mid);
  margin-bottom: 12px;
}

/* --- Button Component --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  font-family: inherit;
  gap: var(--space-sm);
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--cinnabar);
  color: #fff;
}

.btn-primary:hover {
  background: var(--cinnabar-lt);
  box-shadow: 0 4px 12px rgba(139,0,0,0.25);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  background: var(--parchment-card-hv);
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}

.btn-success {
  background: var(--green);
  color: #fff;
}

.btn-danger {
  background: var(--red);
  color: #fff;
}

.btn-sm {
  min-height: 32px;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-xs);
}

.btn-block {
  width: 100%;
}

.btn-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* --- Form Components --- */
input, select, textarea {
  font-family: inherit;
  font-size: var(--text-base);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  width: 100%;
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
  background: var(--parchment-card);
  color: var(--text);
  min-height: 44px;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--cinnabar);
  box-shadow: 0 0 0 3px var(--cinnabar-50);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* --- Label/Tag Component --- */
.label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--text-xs);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-xl);
  font-weight: var(--weight-medium);
}

.label-yang { background: var(--cinnabar-50); color: var(--red); }
.label-yin { background: var(--blue-50); color: var(--blue); }
.label-ban { background: var(--orange-50); color: var(--orange); }
.label-early { background: var(--green-50); color: var(--green); }
.label-mid { background: var(--ochre-50); color: var(--ochre); }
.label-late { background: var(--cinnabar-50); color: var(--cinnabar-dk); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  font-size: var(--text-xs);
  background: var(--parchment-card);
  color: var(--cinnabar);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.tag:hover {
  background: var(--cinnabar);
  color: #fff;
  border-color: var(--cinnabar);
  transform: translateY(-1px);
}

.tag.active {
  background: var(--cinnabar);
  color: #fff;
  border-color: var(--cinnabar);
}

/* --- Tab Component --- */
.tab-bar {
  display: flex;
  background: rgba(252, 250, 246, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: var(--space-sm);
  gap: var(--space-xs);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-bar::-webkit-scrollbar {
  display: none;
}

.tab-item {
  flex: 1;
  min-width: 60px;
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: transparent;
  color: var(--text-mid);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  min-height: 40px;
  font-family: inherit;
}

.tab-item:hover {
  background: var(--cinnabar-50);
  color: var(--text);
}

.tab-item.active {
  background: var(--cinnabar);
  color: #fff;
  box-shadow: 0 2px 8px rgba(139,0,0,0.25);
}

/* --- Panel Component --- */
.panel {
  display: none;
  padding: var(--space-md);
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.panel.active {
  display: block;
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Section Title --- */
.section-title {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--text-mid);
  margin: var(--space-md) 0 var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

/* --- Modal Component --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--parchment-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-5);
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--duration-slow) var(--ease-spring);
}

.modal-overlay.show .modal-box {
  transform: scale(1) translateY(0);
}

.modal-box h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--cinnabar);
  margin-bottom: 12px;
  text-align: center;
}

.modal-box p {
  font-size: 0.9rem;
  color: var(--text-mid);
  text-align: center;
  margin-bottom: 24px;
}

/* --- Sheet Component (iOS Bottom Sheet) --- */
.sheet-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal);
}

.sheet-overlay.open {
  opacity: 1;
  visibility: visible;
}

.sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 80vh;
  background: var(--parchment-card);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  z-index: 201;
  overflow-y: auto;
  padding: var(--space-lg) var(--space-md);
  transform: translateY(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}

.sheet-overlay.open .sheet {
  transform: translateY(0);
}

.sheet .close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  z-index: 10;
}

.sheet h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--cinnabar);
  margin-bottom: 16px;
  padding-right: 40px;
}

/* --- Grid Layout --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* --- Flex Utilities --- */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* --- Spacing Utilities --- */
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-2xs { font-size: var(--text-2xs); }
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-md { font-size: var(--text-md); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-muted { color: var(--text-light); }
.text-cinnabar { color: var(--cinnabar); }
.text-gold { color: var(--gold-dk); }
.font-serif { font-family: var(--font-serif); }
.font-kai { font-family: var(--font-kai); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }

/* --- Display --- */
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }

/* --- Responsive --- */
@media (max-width: 480px) {
  .header h1 {
    font-size: var(--text-xl);
    letter-spacing: 2px;
  }

  .panel {
    padding: var(--space-sm);
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* --- Selection --- */
::selection {
  background: var(--cinnabar-100);
  color: var(--cinnabar-dk);
}

/* --- Print --- */
@media print {
  .header {
    background: #fff !important;
    color: #000 !important;
    border-bottom: 2px solid #000;
  }

  .btn, .tab-bar, .sheet-overlay, .modal-overlay {
    display: none !important;
  }
}

/* --- Header Inner Layout --- */
.header-inner {
  max-width: var(--content-max, 1100px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 var(--content-px, 24px);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--text);
  background: var(--cinnabar);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.header-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  text-align: center;
}

.header-subtitle {
  font-size: 0.6875rem;
  color: var(--text-light);
  display: none;
}

.header-actions {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Theme Toggle --- */
.theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--text);
  background: var(--parchment-card);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.15s ease;
}

.theme-btn:hover {
  background: var(--text);
  color: var(--parchment-card);
}

/* --- Disclaimer Bar --- */
.disclaimer {
  background: var(--orange-50);
  color: var(--orange);
  font-size: 0.6875rem;
  padding: 4px 24px;
  text-align: center;
  line-height: 1.5;
  border-bottom: 1px solid var(--border);
  max-width: var(--content-max, 1100px);
  margin: 0 auto;
}

.disclaimer strong {
  color: var(--red);
}

/* --- Pill Tabs --- */
.tabs-pill-wrap {
  display: block;
  text-align: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs-pill-wrap::-webkit-scrollbar {
  display: none;
}

.tabs-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 1px;
  padding: 5px;
  border-radius: 999px;
  background: var(--parchment-card);
  border: 2px solid var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
  white-space: nowrap;
}

.tab-btn {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  padding: 9px 16px;
  border: none;
  background: transparent;
  color: var(--text-mid);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  min-height: 40px;
  font-family: inherit;
}

.tab-btn:hover {
  background: var(--cinnabar-50);
  color: var(--text);
}

.tab-btn.active {
  background: var(--cinnabar);
  color: #fff;
  box-shadow: 0 2px 8px rgba(139,0,0,0.25);
}

/* --- Card Components --- */
.card-parch {
  background: var(--gold-50);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 16px;
  margin-bottom: 12px;
}

/* --- Symptom Grid --- */
.symptom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 5px;
  padding: 4px;
}

.sb {
  padding: 7px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9em;
  transition: all 0.15s;
  background: var(--parchment-card);
  user-select: none;
  text-align: center;
}

.sb:hover {
  background: var(--parchment-card-hv);
  border-color: var(--gold);
}

.sb.s {
  background: var(--cinnabar-50);
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  font-weight: 600;
}

/* --- Acupoint / Zangfu Chips --- */
.acu-chip, .z-chip {
  display: inline-block;
  padding: 8px 16px;
  margin: 4px;
  border-radius: 20px;
  font-size: 0.9em;
  cursor: pointer;
  border: 2px solid var(--border);
  background: var(--parchment-card);
  transition: all 0.15s;
  user-select: none;
}

.acu-chip:hover, .z-chip:hover {
  border-color: var(--gold);
  background: var(--parchment-card-hv);
}

.acu-chip.s, .z-chip.s {
  border-color: var(--cinnabar);
  background: var(--cinnabar-50);
  color: var(--cinnabar);
  font-weight: 600;
}

.acu-chip.r {
  background: var(--green-50);
  border-color: var(--green);
  color: var(--green);
  font-weight: 600;
}

.acu-chip.w {
  background: var(--red-50);
  border-color: var(--red);
  color: var(--red);
  font-weight: 600;
  text-decoration: line-through;
}

.acu-chip.m {
  border-color: var(--orange);
  background: var(--orange-50);
  color: var(--orange);
  border-style: dashed;
}

/* --- Test Option Tags --- */
.to {
  padding: 8px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85em;
  margin-bottom: 5px;
  transition: all 0.15s;
}

.to:hover {
  border-color: var(--gold);
  background: var(--parchment-card-hv);
}

.to.s {
  border-color: var(--cinnabar);
  background: var(--cinnabar-50);
}

.to.r {
  background: var(--green-50);
  border-color: var(--green);
}

.to.w {
  background: var(--red-50);
  border-color: var(--red);
}

/* --- Feedback Box --- */
.fb {
  background: var(--gold-50);
  border: 1px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-top: 6px;
  font-size: 0.85em;
  line-height: 1.7;
}

/* --- Mode Tags --- */
.at {
  display: inline-block;
  background: var(--cinnabar-50);
  color: var(--cinnabar);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.85em;
  cursor: pointer;
  border: 1px solid var(--gold);
  margin: 2px;
  transition: all 0.15s;
}

.at:hover {
  background: var(--cinnabar);
  color: #fff;
  transform: translateY(-1px);
}

/* --- Acu-tag --- */
.acu-tag {
  display: inline-block;
  cursor: pointer;
  transition: all 0.15s;
}

.acu-tag:hover {
  transform: translateY(-1px);
  opacity: 0.85;
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-mid);
}

.empty-state .empty-icon {
  font-size: 3em;
}

/* --- Note --- */
.note-item {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin: 6px 0;
}

.note-item .note-date {
  font-size: 0.75em;
  color: var(--text-mid);
}

/* --- Knowledge Tag --- */
.kg {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.8em;
  margin: 2px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}

.kg:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* --- Tree Viz --- */
.tree-viz {
  font-size: 0.9em;
  line-height: 2;
  padding: 10px 14px;
  background: var(--parchment-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
}

.tree-sec {
  font-weight: 700;
  color: var(--cinnabar-dk);
  padding: 8px 0 4px;
  font-size: 0.95em;
  border-bottom: 1px dashed var(--gold);
  margin-bottom: 4px;
}

.tree-sec-icon {
  margin-right: 6px;
}

.tree-row {
  padding: 2px 0 2px 8px;
  font-size: 0.88em;
  transition: background 0.15s;
}

.tree-row:hover {
  background: var(--parchment-card-hv);
  border-radius: 4px;
}

.tree-l {
  color: var(--gold-dk);
  font-weight: 700;
  margin-right: 6px;
  font-size: 0.8em;
}

.tree-link {
  color: var(--cinnabar-lt);
  cursor: pointer;
  font-weight: 600;
  padding: 1px 4px;
  border-radius: 3px;
  transition: all 0.15s;
}

.tree-link:hover {
  background: var(--cinnabar);
  color: #fff;
  text-decoration: none;
}

/* --- Layer (辨证结果分层输出) --- */
.layer {
  margin-bottom: 12px;
}

.layer-h {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.layer-n {
  background: var(--cinnabar);
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72em;
  font-weight: 700;
  flex-shrink: 0;
}

.layer-t {
  font-weight: 700;
  font-size: 0.92em;
  color: var(--cinnabar);
}

/* --- Dark Mode Adjustments --- */
@media (prefers-color-scheme: dark) {
  .header-inner {
    background: var(--parchment-dk);
  }

  .header-logo {
    border-color: var(--text);
    background: var(--cinnabar);
  }

  .theme-btn {
    border-color: var(--text);
    background: var(--parchment-card);
    color: var(--text);
  }

  .theme-btn:hover {
    background: var(--text);
    color: var(--parchment-card);
  }

  .disclaimer {
    background: var(--orange-50);
    color: var(--orange);
  }

  .tabs-pill {
    background: var(--parchment-card);
    border-color: var(--text);
  }

  .tab-btn {
    color: var(--text-mid);
  }

  .tab-btn:hover {
    background: var(--cinnabar-50);
    color: var(--text);
  }

  .tab-btn.active {
    background: var(--cinnabar);
    color: #fff;
  }
}

/* ============================================================
   手机端统一规则 (mobile-first)
   ============================================================ */

/* --- 容器统一 480px 居中，背景铺满 --- */
.content, .main, .wrap, .c, .app-shell, .main-content {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* --- 表格溢出保护 --- */
table {
  width: 100%;
  overflow-wrap: break-word;
}

.table-wrap, .table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* --- 手机端网格降级 --- */
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr !important;
  }

  .grid-2-mobile {
    grid-template-columns: 1fr !important;
  }

  .grid-3-mobile {
    grid-template-columns: 1fr !important;
  }

  /* 手机端表格横向滚动 */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  thead, tbody, tr, th, td {
    display: revert;
  }

  /* 手机端隐藏多余列 */
  .hide-mobile {
    display: none !important;
  }

  /* 手机端按钮全宽 */
  .btn-block-mobile {
    width: 100%;
  }

  /* 手机端弹窗全屏 */
  .modal-box, .sheet {
    max-width: 100%;
    margin: 0;
    border-radius: 0;
    max-height: 100vh;
  }
}

/* --- JS inline grid 覆盖（给工具JS用） --- */
.mobile-1col {
  grid-template-columns: 1fr !important;
}

.mobile-2col {
  grid-template-columns: 1fr 1fr !important;
}

@media (max-width: 480px) {
  .mobile-1col,
  .mobile-2col {
    grid-template-columns: 1fr !important;
  }
}

/* ============================================================
   标准动画系统
   ============================================================ */

/* --- 入场动画 --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(16px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

@keyframes popIn {
  0% { opacity: 0; transform: scale(0.5); }
  70% { transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* --- 动画工具类 --- */
.anim-fade-in { animation: fadeIn var(--duration-normal) var(--ease-out) both; }
.anim-fade-in-up { animation: fadeInUp var(--duration-slow) var(--ease-out) both; }
.anim-fade-in-down { animation: fadeInDown var(--duration-slow) var(--ease-out) both; }
.anim-fade-in-left { animation: fadeInLeft var(--duration-slow) var(--ease-out) both; }
.anim-fade-in-right { animation: fadeInRight var(--duration-slow) var(--ease-out) both; }
.anim-scale-in { animation: scaleIn var(--duration-slow) var(--ease-spring) both; }
.anim-pop-in { animation: popIn var(--duration-slower) var(--ease-spring) both; }
.anim-shake { animation: shake 0.4s ease; }
.anim-pulse { animation: pulse 1.5s ease infinite; }
.anim-spin { animation: spin 1s linear infinite; }
.anim-bounce { animation: bounce 1s ease infinite; }

/* --- 延迟工具类 --- */
.delay-1 { animation-delay: 50ms; }
.delay-2 { animation-delay: 100ms; }
.delay-3 { animation-delay: 150ms; }
.delay-4 { animation-delay: 200ms; }
.delay-5 { animation-delay: 250ms; }
.delay-6 { animation-delay: 300ms; }
.delay-7 { animation-delay: 350ms; }
.delay-8 { animation-delay: 400ms; }

/* ============================================================
   标准组件样式
   ============================================================ */

/* --- 学习数据卡片 --- */
.stat-card {
  background: var(--parchment-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--cinnabar);
  line-height: var(--leading-tight);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--text-light);
  margin-top: var(--space-xs);
}

/* --- 学习进度条 --- */
.progress-bar {
  height: 6px;
  background: var(--border-lt);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cinnabar), var(--cinnabar-lt));
  border-radius: 3px;
  transition: width var(--duration-slow) var(--ease-out);
}

/* --- 徽章/标签 --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-xl);
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  line-height: var(--leading-normal);
}

.badge-primary { background: var(--cinnabar-50); color: var(--cinnabar); }
.badge-success { background: var(--green-50); color: var(--green); }
.badge-warning { background: var(--orange-50); color: var(--orange); }
.badge-danger { background: var(--red-50); color: var(--red); }
.badge-info { background: var(--blue-50); color: var(--blue); }
.badge-gold { background: var(--gold-50); color: var(--gold-dk); }

/* --- 分割线 --- */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-md) 0;
}

.divider-light {
  background: var(--border-lt);
}

/* --- 空状态 --- */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--text-light);
}

.empty-icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.empty-text {
  font-size: var(--text-sm);
}

/* --- 海报容器 --- */
.poster-container {
  position: relative;
  width: 100%;
  max-width: 375px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-4);
}

/* --- 学习报告 --- */
.report-header {
  background: linear-gradient(135deg, var(--cinnabar-dk), var(--cinnabar));
  color: #fff;
  padding: var(--space-lg);
  text-align: center;
}

.report-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: 2px;
}

.report-subtitle {
  font-size: var(--text-xs);
  opacity: 0.8;
  margin-top: var(--space-xs);
}

.report-body {
  padding: var(--space-md);
  background: var(--parchment-card);
}

.report-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

/* --- 打卡日历 --- */
.streak-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2xs);
}

.streak-day {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: var(--border-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xs);
  color: var(--text-light);
}

.streak-day.active {
  background: var(--cinnabar);
  color: #fff;
}

.streak-day.today {
  border: 2px solid var(--cinnabar);
}

/* ============================================================
   微交互增强
   ============================================================ */

/* --- 卡片点击反馈 --- */
.card-interactive {
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.card-interactive:active {
  transform: scale(0.98);
}

/* --- 按钮波纹效果 --- */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.btn-ripple:active::after {
  width: 200px;
  height: 200px;
}

/* --- 输入框聚焦动画 --- */
.input-focus-ring {
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.input-focus-ring:focus {
  border-color: var(--cinnabar);
  box-shadow: 0 0 0 3px var(--cinnabar-50);
}

/* ============================================================
   合规免责声明
   ============================================================ */
.disclaimer-footer {
  background: var(--orange-50);
  border-top: 1px solid var(--border);
  padding: var(--space-md);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-mid);
  line-height: 1.8;
}

.disclaimer-footer p {
  margin: 0;
}

.disclaimer-footer .icon {
  margin-right: 4px;
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
  .disclaimer-footer {
    background: rgba(230, 81, 0, 0.1);
    border-top-color: var(--border);
  }
}

/* ============================================================
   全局覆盖规则 - 强制统一各工具样式
   ============================================================ */

/* 强制统一 border-radius */
.card, .btn, .tag, .label, .input, .modal-box, .sheet {
  border-radius: var(--radius-md) !important;
}

.btn-sm, .tag, .label {
  border-radius: var(--radius-sm) !important;
}

/* 强制统一 padding */
.card {
  padding: var(--space-md) !important;
  margin-bottom: var(--space-md) !important;
}

/* 强制统一 font-size 基础值 */
body {
  font-size: var(--text-base) !important;
}

/* 强制统一 transition */
.card, .btn, .tag, .label, .tab-item, input, select, textarea {
  transition-property: color, background, border-color, box-shadow, transform, opacity;
  transition-duration: var(--duration-normal);
  transition-timing-function: var(--ease-out);
}

/* 强制统一 box-shadow */
.card {
  box-shadow: var(--shadow-2) !important;
}

.card:hover {
  box-shadow: var(--shadow-3) !important;
}

/* 强制统一最小触控区域 */
.btn, .tab-item, input, select, textarea {
  min-height: 44px;
}

.btn-sm {
  min-height: 32px;
}

/* 强制统一点击反馈 */
.card:active, .btn:active, .tag:active {
  transform: scale(0.98);
}

/* 强制统一 focus 样式 */
input:focus, select:focus, textarea:focus {
  border-color: var(--cinnabar) !important;
  box-shadow: 0 0 0 3px var(--cinnabar-50) !important;
  outline: none;
}

/* Tool page consolidation layer.
   Legacy tools keep their own markup; this reduces cross-page layout drift. */
:root {
  --tool-page-max: 1100px;
  --tool-phone-max: 520px;
}

.app-shell,
.main-content,
.content,
.main,
.wrap,
.c {
  width: 100%;
  max-width: var(--tool-page-max);
  margin-left: auto;
  margin-right: auto;
}

.main-content,
.content,
.main,
.wrap,
.c {
  padding-left: clamp(12px, 3vw, 24px);
  padding-right: clamp(12px, 3vw, 24px);
}

.tool-card,
.grid-tool-card,
.food-tool-card,
.recipe-tool-card,
.plan-day-tool-card,
.knowledge-tool-card,
.quiz-tool-card,
.collect-tool-card,
.stat-tool-card,
.term-tool-card,
.r-tool-card,
.zh-tool-card,
.tool-card-parch,
.safety-tool-card,
.path-tool-card,
.combo-tool-card,
.cite-block {
  border-radius: var(--radius, 10px);
  border-color: var(--border);
  box-shadow: var(--shadow-1, 0 1px 3px rgba(92,82,72,0.06));
}

.tool-card,
.food-tool-card,
.recipe-tool-card,
.plan-day-tool-card,
.knowledge-tool-card,
.quiz-tool-card,
.collect-tool-card,
.term-tool-card,
.r-tool-card,
.zh-tool-card {
  overflow-wrap: anywhere;
}

.grid-tool-card,
.food-tool-card,
.knowledge-tool-card,
.collect-tool-card,
.term-tool-card,
.mode-tool-btn,
.connect-tool-card,
.matchgame-item,
.sb,
.acu-tool-chip,
.z-tool-chip,
.acu-chip,
.z-chip,
.cat-tab,
.tn,
.nav-item,
.tool-btn,
.back-tool-btn,
.icon-tool-btn,
.fav-tool-btn {
  -webkit-tap-highlight-color: transparent;
}

.tool-btn,
.back-tool-btn,
.icon-tool-btn,
.fav-tool-btn,
.cat-tab,
.mode-tool-btn,
.tn,
.nav-item {
  min-height: 40px;
  touch-action: manipulation;
}

.tool-btn,
.back-tool-btn,
.cat-tab,
.mode-tool-btn {
  align-items: center;
  justify-content: center;
  line-height: 1.25;
  white-space: normal;
}

.tool-btn-group,
.category-tabs,
.tabs,
.bottom-nav,
.mode-grid,
.stats-grid,
.tool-card-grid,
.home-grid,
.season-food-grid {
  min-width: 0;
}

.tabs,
.category-tabs {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar,
.category-tabs::-webkit-scrollbar {
  display: none;
}

.bottom-nav {
  max-width: var(--tool-phone-max);
  margin-left: auto;
  margin-right: auto;
  left: 50%;
  right: auto;
  width: 100%;
  transform: translateX(-50%);
}

.nav-item {
  min-width: 0;
  flex: 1 1 0;
  overflow-wrap: anywhere;
}

.mode-grid {
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr)) !important;
}

.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)) !important;
}

.home-grid,
.season-food-grid,
.tool-card-grid {
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr)) !important;
}

.symptom-grid {
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
}

.connect-board {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.connect-tool-card,
.grid-tool-card {
  min-width: 0;
}

.compare-table,
table {
  max-width: 100%;
}

.table-scroll,
.table-wrap,
.tool-card:has(table),
.quiz-tool-card:has(table) {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (min-width: 768px) {
  body {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .main-content,
  .content,
  .main,
  .wrap,
  .c {
    padding-left: 12px;
    padding-right: 12px;
  }

  .tool-card,
  .quiz-tool-card,
  .plan-day-tool-card,
  .knowledge-tool-card,
  .food-tool-card,
  .recipe-tool-card {
    padding: 12px !important;
  }

  .tabs {
    flex-wrap: nowrap !important;
  }

  .tn {
    min-width: 74px !important;
    flex: 0 0 auto !important;
  }

  .home-grid,
  .mode-grid,
  .tool-card-grid,
  .season-food-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  }

  .grid-tool-card-header,
  .mode-label,
  .stat-label,
  .nav-item {
    font-size: clamp(0.68rem, 3vw, 0.85rem);
  }

  .grid-tool-card-desc,
  .mode-desc {
    font-size: clamp(0.6rem, 2.7vw, 0.72rem);
  }
}

@media (max-width: 380px) {
  .home-grid,
  .mode-grid,
  .tool-card-grid,
  .season-food-grid,
  .stats-grid {
    grid-template-columns: 1fr !important;
  }
}

/* Common utility classes used while removing legacy inline styles. */
.u-mt-0 { margin-top: 0 !important; }
.u-mt-4 { margin-top: 4px !important; }
.u-mt-6 { margin-top: 6px !important; }
.u-mt-8 { margin-top: 8px !important; }
.u-mt-12 { margin-top: 12px !important; }
.u-mb-8 { margin-bottom: 8px !important; }
.u-mb-12 { margin-bottom: 12px !important; }
.u-my-4 { margin-top: 4px !important; margin-bottom: 4px !important; }
.u-my-8 { margin-top: 8px !important; margin-bottom: 8px !important; }
.u-center { text-align: center !important; }
.u-scroll-x { overflow-x: auto !important; -webkit-overflow-scrolling: touch; }
.u-text-muted { color: var(--text-muted, var(--text-light, #888)) !important; }
.u-text-light { color: var(--text-light, var(--text-muted, #888)) !important; }
.u-text-red { color: var(--red, var(--danger, #c62828)) !important; }
.u-text-green-ink { color: var(--green-ink, var(--green, #2e7d32)) !important; }
.u-text-accent-link {
  color: var(--accent, var(--primary, #8B4513)) !important;
  text-decoration: underline !important;
  cursor: pointer !important;
}
.u-fs-075 { font-size: 0.75rem !important; }
.u-fs-082em { font-size: 0.82em !important; }
.u-fs-085rem { font-size: 0.85rem !important; }
.u-table-compact {
  width: 100% !important;
  border-collapse: collapse !important;
  font-size: 0.82em !important;
}
.u-flex-between {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
}
.u-flex-between-start {
  display: flex !important;
  justify-content: space-between !important;
}

.u-mb-6 { margin-bottom: 6px !important; }