/* MBTI 64型人格测试网站 - 全局样式 */

/* ============ CSS变量 ============ */
:root {
  /* 主色调 */
  --primary: #4A3AFF;
  --primary-light: #7B6AFF;
  --primary-dark: #3A2AE6;
  
  /* 背景色 */
  --bg-primary: #F8F9FC;
  --bg-card: #FFFFFF;
  --bg-dark: #1A1B2E;
  
  /* 文字色 */
  --text-primary: #1A1B2E;
  --text-secondary: #6B7280;
  --text-light: #9CA3AF;
  --text-white: #FFFFFF;
  
  /* 功能色 */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
  
  /* 维度颜色 */
  --color-E: #FF6B6B;
  --color-I: #4ECDC4;
  --color-S: #45B7D1;
  --color-N: #96CEB4;
  --color-T: #FFEAA7;
  --color-F: #DDA0DD;
  --color-J: #98D8C8;
  --color-P: #F7DC6F;
  --color-A: #BB8FCE;
  --color-O: #85C1E9;
  --color-H: #F8B500;
  --color-C: #58D68D;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(74, 58, 255, 0.06);
  --shadow-md: 0 4px 16px rgba(74, 58, 255, 0.08);
  --shadow-lg: 0 8px 32px rgba(74, 58, 255, 0.12);
  --shadow-xl: 0 16px 48px rgba(74, 58, 255, 0.16);
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 字体 */
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* 容器宽度 */
  --container-max: 1200px;
  --container-narrow: 800px;
}

/* ============ 重置样式 ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ============ 通用容器 ============ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* ============ 通用标题 ============ */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  text-align: center;
  margin-top: calc(-1 * var(--spacing-lg));
  margin-bottom: var(--spacing-2xl);
}

/* ============ 通用卡片 ============ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ============ 按钮样式 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--text-white);
  box-shadow: 0 4px 16px rgba(74, 58, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 58, 255, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--text-white);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--primary);
  background: rgba(74, 58, 255, 0.05);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* ============ Header ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.logo-icon {
  font-size: 1.5rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  font-size: 1.5rem;
  color: var(--text-primary);
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
  z-index: 999;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu .nav-link {
  display: block;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--bg-primary);
}

/* ============ Footer ============ */
.footer {
  margin-top: auto;
  background: var(--bg-dark);
  color: var(--text-light);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  color: var(--text-white);
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: var(--spacing-lg);
}

.footer-links a {
  display: block;
  color: var(--text-light);
  padding: var(--spacing-xs) 0;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.875rem;
}

/* ============ 主内容区域 ============ */
.main-content {
  padding-top: 64px;
  flex: 1;
}

/* ============ Hero 区域 ============ */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: linear-gradient(180deg, rgba(74, 58, 255, 0.03) 0%, transparent 100%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(74, 58, 255, 0.1);
  color: var(--primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============ 特性卡片 ============ */
.features {
  padding: var(--spacing-3xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-2xl);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ============ 介绍区域 ============ */
.intro {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-card);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.intro-content h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
}

.intro-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.intro-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.intro-emoji {
  font-size: 8rem;
  filter: drop-shadow(0 20px 40px rgba(74, 58, 255, 0.2));
}

/* ============ 维度说明卡片 ============ */
.dimensions {
  padding: var(--spacing-3xl) 0;
}

.dimensions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.dimension-card {
  padding: var(--spacing-xl);
  border-left: 4px solid var(--primary);
}

.dimension-card:nth-child(2) { border-color: var(--color-N); }
.dimension-card:nth-child(3) { border-color: var(--color-F); }
.dimension-card:nth-child(4) { border-color: var(--color-P); }
.dimension-card:nth-child(5) { border-color: var(--color-A); }
.dimension-card:nth-child(6) { border-color: var(--color-H); }

.dimension-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.dimension-code {
  font-size: 0.75rem;
  background: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.dimension-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ============ 测试页面 ============ */
.test-page {
  padding: var(--spacing-2xl) 0;
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
}

.test-container {
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

/* 进度条 */
.progress-section {
  margin-bottom: var(--spacing-xl);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.progress-bar {
  height: 8px;
  background: rgba(74, 58, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* 问题卡片 */
.question-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.question-number {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(74, 58, 255, 0.1);
  color: var(--primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.question-text {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
}

.question-dimension {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-left: var(--spacing-sm);
}

/* Likert 量表 */
.likert-scale {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.likert-option {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-primary);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.likert-option:hover {
  background: rgba(74, 58, 255, 0.05);
  border-color: rgba(74, 58, 255, 0.2);
}

.likert-option.selected {
  background: rgba(74, 58, 255, 0.1);
  border-color: var(--primary);
}

.likert-radio {
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-light);
  border-radius: 50%;
  margin-right: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.likert-option.selected .likert-radio {
  border-color: var(--primary);
  background: var(--primary);
}

.likert-option.selected .likert-radio::after {
  content: '';
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
}

.likert-label {
  flex: 1;
  font-size: 1rem;
}

.likert-value {
  font-size: 0.8125rem;
  color: var(--text-light);
}

/* 测试导航 */
.test-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.test-nav .btn {
  flex: 1;
}

/* ============ 结果页面 ============ */
.result-page {
  padding: var(--spacing-2xl) 0;
}

.result-container {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* 结果头部 */
.result-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.result-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.result-type-code {
  font-size: 4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.result-type-name {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.result-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* 维度得分 */
.dimensions-result {
  margin-bottom: var(--spacing-2xl);
}

.dimensions-result .section-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xl);
}

.dimension-bar {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
}

.dimension-label {
  width: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.dimension-values {
  width: 40px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.dimension-track {
  flex: 1;
  height: 12px;
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.dimension-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.dimension-fill.E, .dimension-fill.S, .dimension-fill.T, .dimension-fill.J, .dimension-fill.A, .dimension-fill.H {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
}

.dimension-fill.I, .dimension-fill.N, .dimension-fill.F, .dimension-fill.P, .dimension-fill.O, .dimension-fill.C {
  background: linear-gradient(90deg, var(--primary-light) 0%, var(--primary) 100%);
}

/* 结果描述 */
.result-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.result-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
}

.result-section.full-width {
  grid-column: 1 / -1;
}

.result-section-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.result-section-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--primary);
  border-radius: 2px;
}

.result-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.result-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.result-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: bold;
  flex-shrink: 0;
}

.result-section.weaknesses .result-list li::before {
  content: '✗';
  color: var(--error);
}

.result-text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* 分享按钮 */
.share-btn {
  background: var(--bg-primary);
  border: 1px solid var(--text-light);
}

.share-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ============ 类型列表页 ============ */
.types-page {
  padding: var(--spacing-2xl) 0;
}

.types-container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.types-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.search-box {
  max-width: 400px;
  margin: 0 auto var(--spacing-xl);
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  padding-left: 48px;
  font-size: 1rem;
  border: 2px solid var(--bg-primary);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
}

.search-icon {
  position: absolute;
  left: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

/* Tab 切换 */
.tabs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-card);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

.tab-btn.active {
  background: var(--primary);
  color: white;
}

/* 类型卡片网格 */
.types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.type-card {
  display: block;
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.type-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.type-card-emoji {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.type-card-code {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
}

.type-card-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.type-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.type-card-group {
  display: inline-block;
  margin-top: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(74, 58, 255, 0.1);
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

/* ============ 类型详情页 ============ */
.detail-page {
  padding: var(--spacing-2xl) 0;
}

.detail-container {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.detail-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-size: 0.9375rem;
}

.detail-back:hover {
  color: var(--primary);
}

.detail-emoji {
  font-size: 5rem;
  margin-bottom: var(--spacing-md);
}

.detail-code {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.detail-name {
  font-size: 1.5rem;
  color: var(--text-secondary);
}

.detail-group {
  display: inline-block;
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(74, 58, 255, 0.1);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
}

/* 雷达图 */
.radar-section {
  margin-bottom: var(--spacing-2xl);
}

.radar-chart {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.radar-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radar-grid {
  fill: none;
  stroke: var(--bg-primary);
  stroke-width: 1;
}

.radar-axis {
  stroke: var(--bg-primary);
  stroke-width: 1;
}

.radar-area {
  fill: rgba(74, 58, 255, 0.2);
  stroke: var(--primary);
  stroke-width: 2;
}

.radar-point {
  fill: var(--primary);
}

.radar-label {
  font-size: 0.75rem;
  fill: var(--text-secondary);
  text-anchor: middle;
}

.radar-value {
  font-size: 0.6875rem;
  fill: var(--text-light);
}

/* 相关类型 */
.related-types {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.related-type {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  min-width: 100px;
}

.related-type:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.related-type-emoji {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.related-type-code {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}

/* ============ 关于页 ============ */
.about-page {
  padding: var(--spacing-2xl) 0;
}

.about-container {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.about-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.about-section h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.about-section h2::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
}

.about-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--bg-primary);
  padding: var(--spacing-lg) 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding-top: var(--spacing-md);
}

/* ============ 对比页 ============ */
.comparison-page {
  padding: var(--spacing-2xl) 0;
}

.comparison-container {
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.comparison-selector {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--spacing-lg);
  align-items: end;
  margin-bottom: var(--spacing-2xl);
}

.selector-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.selector-group select {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
  border: 2px solid var(--bg-primary);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.selector-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.vs-badge {
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
}

.comparison-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.comparison-column {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.comparison-column-header {
  padding: var(--spacing-xl);
  text-align: center;
  background: linear-gradient(135deg, rgba(74, 58, 255, 0.05) 0%, rgba(74, 58, 255, 0.1) 100%);
}

.comparison-emoji {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.comparison-code {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.comparison-name {
  font-size: 1rem;
  color: var(--text-secondary);
}

.comparison-column-content {
  padding: var(--spacing-xl);
}

.comparison-dimension {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.comparison-dim-label {
  width: 60px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.comparison-dim-bar {
  flex: 1;
  height: 8px;
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 var(--spacing-sm);
}

.comparison-dim-fill {
  height: 100%;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.comparison-dim-value {
  width: 40px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: right;
}

.comparison-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--bg-primary);
}

.comparison-list {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.comparison-list li {
  padding: var(--spacing-xs) 0;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.comparison-list li::before {
  content: '•';
  color: var(--primary);
}

/* ============ 动画 ============ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* 延迟动画 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .intro-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .intro-visual {
    order: -1;
  }
  
  .intro-emoji {
    font-size: 5rem;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .dimensions-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-brand {
    max-width: 100%;
  }
  
  .result-content {
    grid-template-columns: 1fr;
  }
  
  .comparison-selector {
    grid-template-columns: 1fr;
  }
  
  .vs-badge {
    display: none;
  }
  
  .comparison-result {
    grid-template-columns: 1fr;
  }
  
  .likert-option {
    padding: var(--spacing-md);
  }
  
  .likert-label {
    font-size: 0.875rem;
  }
  
  .result-type-code {
    font-size: 2.5rem;
  }
  
  .tabs {
    gap: var(--spacing-xs);
  }
  
  .tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8125rem;
  }
  
  .types-grid {
    grid-template-columns: 1fr;
  }
  
  .dimension-bar {
    flex-wrap: wrap;
  }
  
  .dimension-label {
    width: 100%;
    margin-bottom: var(--spacing-xs);
  }
  
  .dimension-track {
    width: 100%;
    order: 3;
  }
  
  .dimension-values {
    width: auto;
    order: 2;
    margin-left: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .card {
    padding: var(--spacing-lg);
  }
  
  .question-card {
    padding: var(--spacing-lg);
  }
  
  .test-nav {
    flex-direction: column;
  }
  
  .radar-chart {
    width: 250px;
    height: 250px;
  }
}

/* ============ 辅助类 ============ */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.hidden { display: none !important; }