/* ============================================
   GEO 优化公司官网 - 全局样式表
   Version: 1.0
   ============================================ */

/* ========== CSS 变量定义 ========== */
:root {
  /* 颜色系统 */
  --color-primary: #1E40AF;
  --color-primary-hover: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-secondary: #F9FAFB;
  --color-background: #FFFFFF;
  --color-surface: #F9FAFB;
  --color-text-primary: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  
  /* 标签颜色 */
  --color-success: #10B981;
  --color-premium: #7C3AED;
  --color-hot: #F59E0B;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
  
  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* 容器宽度 */
  --container-max: 1200px;
  --container-narrow: 800px;
}

/* ========== 重置与基础样式 ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
}

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

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

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

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

.section {
  padding: var(--spacing-4xl) 0;
}

.section-sm {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title h2 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.section-title p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.navbar-brand svg {
  width: 32px;
  height: 32px;
}

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

.navbar-link {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

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

.navbar-link:hover::after,
.navbar-link.active::after {
  width: 100%;
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* 移动端菜单按钮 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.navbar-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* ========== 按钮组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-white:hover {
  background: var(--color-surface);
}

.btn-lg {
  padding: 16px 32px;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ========== Hero 区域 ========== */
.hero {
  padding: calc(64px + var(--spacing-4xl)) 0 var(--spacing-4xl);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

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

/* ========== 卡片组件 ========== */
.card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.card-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.card-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

/* ========== 数据卡片 ========== */
.stat-card {
  text-align: center;
  padding: var(--spacing-xl);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ========== 标签 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.badge-primary {
  background: rgba(30, 64, 175, 0.1);
  color: var(--color-primary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.badge-premium {
  background: rgba(124, 58, 237, 0.1);
  color: var(--color-premium);
}

.badge-hot {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-hot);
}

/* ========== CTA 横幅 ========== */
.cta-section {
  background: var(--color-primary);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
}

.cta-section .btn-white {
  background: #FFFFFF;
  color: var(--color-primary);
}

.cta-section .btn-white:hover {
  background: rgba(255, 255, 255, 0.9);
}

/* ========== 页脚 ========== */
.footer {
  background: var(--color-text-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-brand svg {
  width: 32px;
  height: 32px;
}

.footer-text {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.footer-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-contact p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.footer-qr {
  margin-top: var(--spacing-md);
}

.footer-qr img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  padding: var(--spacing-xs);
}

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

/* ========== 价格卡片 ========== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.pricing-card {
  background: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

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

.pricing-card.featured {
  border-color: var(--color-success);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.pricing-card.premium {
  border-color: var(--color-premium);
}

.pricing-card .badge {
  margin-bottom: var(--spacing-md);
}

.pricing-name {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.pricing-price {
  margin-bottom: var(--spacing-md);
}

.pricing-price .currency {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-secondary);
  vertical-align: top;
}

.pricing-price .amount {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.pricing-price .period {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

.pricing-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.pricing-features {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing-features svg {
  width: 18px;
  height: 18px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-features li.disabled {
  color: var(--color-text-muted);
}

.pricing-features li.disabled svg {
  color: var(--color-text-muted);
}

.pricing-card .btn {
  width: 100%;
}

/* ========== 时间线 ========== */
.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

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

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-xl) + 4px);
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
}

.timeline-year {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline-content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ========== 对比表格 ========== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.comparison-table td {
  color: var(--color-text-secondary);
}

.comparison-table tr:hover td {
  background: var(--color-surface);
}

.comparison-table .highlight {
  background: rgba(30, 64, 175, 0.05);
  font-weight: 500;
  color: var(--color-primary);
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-primary);
  text-align: left;
  cursor: pointer;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

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

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

.faq-answer p {
  padding-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== 流程步骤 ========== */
.process-steps {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.process-step {
  flex: 1;
  text-align: center;
  position: relative;
}

.process-step::after {
  content: '';
  position: absolute;
  top: 24px;
  right: -50%;
  width: 100%;
  height: 2px;
  background: var(--color-border);
}

.process-step:last-child::after {
  display: none;
}

.process-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #FFFFFF;
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: 50%;
  margin: 0 auto var(--spacing-md);
  position: relative;
  z-index: 1;
}

.process-step h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.process-step p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ========== 表单 ========== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

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

.breadcrumb span {
  color: var(--color-text-muted);
}

/* ========== 页面标题 ========== */
.page-header {
  padding: calc(64px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: var(--color-surface);
  text-align: center;
}

.page-header h1 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.page-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

/* ========== 优势详情 ========== */
.advantage-card {
  display: flex;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-base);
}

.advantage-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.advantage-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.advantage-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.advantage-content p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.advantage-value {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 500;
}

/* ========== 行业方案卡片 ========== */
.industry-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.industry-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.industry-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.industry-item {
  margin-bottom: var(--spacing-md);
}

.industry-item-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.industry-item-value {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ========== 优惠信息 ========== */
.discount-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.discount-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

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

.discount-item {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
}

.discount-item .badge {
  margin-bottom: var(--spacing-sm);
}

.discount-item .original-price {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.discount-item .final-price {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
}

.discount-item .savings {
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

/* ========== 保障列表 ========== */
.guarantee-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.guarantee-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
}

.guarantee-item span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ========== 客户评价 ========== */
.testimonial-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.testimonial-content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.testimonial-info h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

.testimonial-info p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========== 移动端响应式 ========== */
@media (max-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-card.featured {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    flex-wrap: wrap;
  }
  
  .process-step {
    flex: 0 0 33.333%;
  }
  
  .process-step::after {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 36px;
    --font-size-4xl: 30px;
    --font-size-3xl: 24px;
  }
  
  .navbar-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-background);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-md);
  }
  
  .navbar-menu.active {
    display: flex;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .navbar-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .navbar-cta {
    display: none;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .card-grid,
  .card-grid-3,
  .card-grid-2,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .guarantee-list {
    grid-template-columns: 1fr;
  }
  
  .discount-grid {
    grid-template-columns: 1fr;
  }
  
  .process-step {
    flex: 0 0 50%;
    margin-bottom: var(--spacing-lg);
  }
  
  .comparison-table {
    font-size: var(--font-size-sm);
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm);
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* 滚动触发动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟加载 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }