/* ============================================
   单页着陆页样式 - 使用 global.css 设计令牌
   ============================================ */

/* ---------- 容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ---------- 导航栏 ---------- */
.site-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: 64px;
  display: flex;
  align-items: center;
}

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

.site-navbar .navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-navbar .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #4080FF);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: var(--font-size-3);
}

.site-navbar .brand-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-1);
}

.site-navbar .navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-navbar .navbar-nav a {
  color: var(--color-text-2);
  text-decoration: none;
  font-size: var(--font-size-3);
  transition: color var(--transition-normal);
  position: relative;
  padding: var(--space-2) 0;
}

.site-navbar .navbar-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-normal);
}

.site-navbar .navbar-nav a:hover,
.site-navbar .navbar-nav a.active {
  color: var(--color-primary);
}

.site-navbar .navbar-nav a:hover::after,
.site-navbar .navbar-nav a.active::after {
  width: 100%;
}

.site-navbar .navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-navbar .btn-ghost {
  background: transparent;
  color: var(--color-text-2);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-3);
  transition: color var(--transition-normal);
}

.site-navbar .btn-ghost:hover {
  color: var(--color-primary);
}

.site-navbar .hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.site-navbar .hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-1);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

/* ---------- 英雄区 ---------- */
.hero-section {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: var(--space-8);
  background: linear-gradient(180deg, #F7FAFF 0%, var(--color-bg-page) 100%);
  display: flex;
  align-items: center;
}

.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}

.hero-section .hero-title {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text-1);
  line-height: 1.2;
  margin: 0 0 var(--space-4);
}

.hero-section .hero-desc {
  font-size: 18px;
  color: var(--color-text-2);
  line-height: 1.6;
  margin: 0 0 var(--space-5);
}

.hero-section .hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-section .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-3);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-3);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.hero-section .btn-primary:hover {
  background: #4080FF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.hero-section .btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-3);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-3);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.hero-section .btn-outline:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

/* 手机模型 */
.phone-mockup {
  width: 300px;
  height: 600px;
  margin: 0 auto;
  background: var(--color-text-1);
  border-radius: 40px;
  padding: 16px;
  position: relative;
  box-shadow: var(--shadow-3);
}

.phone-mockup::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 20px;
  background: #000;
  border-radius: 12px;
  z-index: 2;
}

.phone-mockup .phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-fill-1);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-mockup .screen-header {
  background: linear-gradient(135deg, var(--color-primary), #4080FF);
  color: #fff;
  padding: var(--space-4);
  text-align: center;
  font-size: var(--font-size-3);
  font-weight: 500;
}

.phone-mockup .screen-banner {
  margin: var(--space-3);
  height: 80px;
  background: linear-gradient(135deg, #FFE8D6, #FFD6E8);
  border-radius: var(--radius-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  font-size: var(--font-size-2);
}

.phone-mockup .screen-list {
  flex: 1;
  padding: 0 var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.phone-mockup .screen-item {
  background: #fff;
  border-radius: var(--radius-2);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.phone-mockup .item-thumb {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-2);
  background: linear-gradient(135deg, var(--color-primary-light), #E8F3FF);
  flex-shrink: 0;
}

.phone-mockup .item-info {
  flex: 1;
}

.phone-mockup .item-title {
  font-size: var(--font-size-3);
  color: var(--color-text-1);
  font-weight: 500;
  margin: 0 0 4px;
}

.phone-mockup .item-price {
  font-size: var(--font-size-2);
  color: var(--color-primary);
  margin: 0;
}

/* ---------- 功能特性区 ---------- */
.features-section {
  padding: var(--space-8) 0;
  background: var(--color-bg-page);
}

.features-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.features-section .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.features-section .section-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-3);
  margin: 0;
}

/* 功能行 */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
  margin-bottom: var(--space-7);
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-row .feature-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.2;
  line-height: 1;
  margin: 0 0 var(--space-3);
}

.feature-row h3 {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.feature-row .feature-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-2);
  line-height: 1.6;
  margin: 0 0 var(--space-4);
}

.feature-row .feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.feature-row .feature-list li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--color-text-2);
  font-size: var(--font-size-3);
}

.feature-row .feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.feature-row .compare-box {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-2);
  font-size: var(--font-size-2);
  font-weight: 500;
}

/* 功能模型 */
.feature-mockup {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: 24px;
}

/* 仪表板模型 */
.dashboard-mockup {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: 24px;
}

.dashboard-mockup .stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.dashboard-mockup .stat-block {
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
  padding: var(--space-3);
  text-align: center;
}

.dashboard-mockup .stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0;
}

.dashboard-mockup .stat-label {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
  margin: 4px 0 0;
}

.dashboard-mockup .bar-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 120px;
  padding: var(--space-3);
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
}

.dashboard-mockup .bar {
  flex: 1;
  background: linear-gradient(180deg, var(--color-primary), #4080FF);
  border-radius: 4px 4px 0 0;
  min-height: 20px;
}

.dashboard-mockup .bar:nth-child(1) { height: 40%; }
.dashboard-mockup .bar:nth-child(2) { height: 65%; }
.dashboard-mockup .bar:nth-child(3) { height: 50%; }
.dashboard-mockup .bar:nth-child(4) { height: 80%; }
.dashboard-mockup .bar:nth-child(5) { height: 95%; }
.dashboard-mockup .bar:nth-child(6) { height: 70%; }
.dashboard-mockup .bar:nth-child(7) { height: 85%; }

/* 编辑器模型 */
.editor-mockup {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: 24px;
}

.editor-mockup .editor-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
  margin-bottom: var(--space-3);
}

.editor-mockup .toolbar-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-2);
  background: #fff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2);
  color: var(--color-text-2);
}

.editor-mockup .toolbar-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.editor-mockup .editor-canvas {
  min-height: 140px;
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.editor-mockup .canvas-block {
  background: #fff;
  border-radius: var(--radius-2);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
}

.editor-mockup .canvas-block.block-title {
  font-size: var(--font-size-4);
  font-weight: 600;
  color: var(--color-text-1);
}

.editor-mockup .canvas-block.block-text {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
}

/* 小程序模型 */
.miniapp-mockup {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: 24px;
}

.miniapp-mockup .miniapp-header {
  background: linear-gradient(135deg, var(--color-primary), #4080FF);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-2);
  text-align: center;
  font-weight: 500;
  font-size: var(--font-size-3);
  margin-bottom: var(--space-3);
}

.miniapp-mockup .miniapp-banner {
  height: 60px;
  background: linear-gradient(135deg, #FFE8D6, #FFD6E8);
  border-radius: var(--radius-2);
  margin-bottom: var(--space-3);
}

.miniapp-mockup .miniapp-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.miniapp-mockup .miniapp-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
}

.miniapp-mockup .miniapp-thumb {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-2);
  background: linear-gradient(135deg, var(--color-primary-light), #E8F3FF);
}

.miniapp-mockup .miniapp-text {
  font-size: var(--font-size-3);
  color: var(--color-text-1);
}

/* 工具模型 */
.tools-mockup {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: 24px;
}

.tools-mockup .tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.tools-mockup .tool-card {
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
  padding: var(--space-4);
  text-align: center;
}

.tools-mockup .tool-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-2);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-2);
  font-size: var(--font-size-4);
}

.tools-mockup .tool-label {
  font-size: var(--font-size-2);
  color: var(--color-text-2);
}

/* 时间线 */
.timeline-block {
  background: #fff;
  border-radius: var(--radius-4);
  box-shadow: var(--shadow-1);
  padding: 40px;
  margin: var(--space-7) 0;
}

.timeline-block .timeline-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-1);
  text-align: center;
  margin: 0 0 var(--space-6);
}

.timeline-block .timeline-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.timeline-block .step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}

.timeline-block .step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.timeline-block .step-title {
  font-size: var(--font-size-3);
  font-weight: 500;
  color: var(--color-text-1);
  margin: 0 0 var(--space-1);
  text-align: center;
}

.timeline-block .step-desc {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
  margin: 0;
  text-align: center;
}

.timeline-block .step-arrow {
  color: var(--color-text-3);
  font-size: var(--font-size-5);
  flex-shrink: 0;
}

/* 组件网格 */
.component-grid {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: var(--space-4);
  margin: var(--space-7) 0;
}

.component-grid .component-card {
  background: #fff;
  border-radius: var(--radius-3);
  padding: var(--space-5) var(--space-3);
  text-align: center;
  box-shadow: var(--shadow-1);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.component-grid .component-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.component-grid .component-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: var(--font-size-4);
}

.component-grid .component-label {
  font-size: var(--font-size-2);
  color: var(--color-text-2);
}

/* 功能底部 CTA */
.features-cta {
  background: linear-gradient(135deg, #165DFF, #4080FF);
  border-radius: var(--radius-4);
  padding: var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  color: #fff;
  margin-top: var(--space-7);
}

.features-cta .cta-text h3 {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.features-cta .cta-text p {
  font-size: var(--font-size-3);
  opacity: 0.9;
  margin: 0;
}

.features-cta .btn-white {
  background: #fff;
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-3);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-3);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.features-cta .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

/* ---------- 定价区 ---------- */
.pricing-section {
  padding: var(--space-8) 0;
  background: #fff;
}

.pricing-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.pricing-section .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.pricing-section .section-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-3);
  margin: 0;
}

.pricing-section .pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-7);
}

.pricing-section .pricing-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  padding: 40px 32px;
  transition: all var(--transition-normal);
  position: relative;
}

.pricing-section .pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.pricing-section .pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 32px rgba(22, 93, 255, 0.12);
  transform: scale(1.02);
}

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

.pricing-section .pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-2);
  white-space: nowrap;
}

.pricing-section .pricing-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.pricing-section .pricing-desc {
  font-size: var(--font-size-3);
  color: var(--color-text-3);
  margin: 0 0 var(--space-5);
  line-height: 1.5;
}

.pricing-section .pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: var(--space-5);
}

.pricing-section .price-symbol {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-1);
}

.pricing-section .price-value {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text-1);
  line-height: 1;
}

.pricing-section .price-unit {
  font-size: 14px;
  color: var(--color-text-3);
}

.pricing-section .price-original {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
  text-decoration: line-through;
  margin-bottom: var(--space-4);
}

.pricing-section .pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.pricing-section .pricing-features li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--color-text-2);
  font-size: var(--font-size-3);
}

.pricing-section .pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-success);
  font-weight: 700;
}

.pricing-section .pricing-card .btn-primary {
  width: 100%;
  justify-content: center;
}

.pricing-section .pricing-card.featured .btn-primary {
  background: var(--color-primary);
}

/* 对比表 */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-7);
  background: #fff;
  border-radius: var(--radius-3);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4);
  text-align: left;
  font-size: var(--font-size-3);
  border-bottom: 1px solid var(--color-border);
}

.comparison-table thead th {
  background: var(--color-fill-1);
  font-weight: 600;
  color: var(--color-text-1);
}

.comparison-table tbody td:first-child {
  font-weight: 500;
  color: var(--color-text-1);
}

.comparison-table .highlight-col {
  background: var(--color-primary-light);
  font-weight: 600;
  color: var(--color-primary);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* 定价 FAQ */
.pricing-faq {
  max-width: 800px;
  margin: 0 auto var(--space-7);
}

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

.pricing-faq .faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: var(--space-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: var(--font-size-3);
  color: var(--color-text-1);
  font-weight: 500;
  text-align: left;
}

.pricing-faq .faq-question:hover {
  color: var(--color-primary);
}

.pricing-faq .faq-answer {
  padding: 0 0 var(--space-4);
  font-size: var(--font-size-3);
  color: var(--color-text-2);
  line-height: 1.6;
  display: none;
}

.pricing-faq .faq-item.open .faq-answer {
  display: block;
}

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

.pricing-faq .faq-icon {
  transition: transform var(--transition-normal);
  color: var(--color-text-3);
}

/* 定价底部 CTA */
.pricing-cta {
  background: linear-gradient(135deg, #165DFF, #4080FF);
  border-radius: var(--radius-4);
  padding: var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  color: #fff;
}

.pricing-cta .cta-text h3 {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.pricing-cta .cta-text p {
  font-size: var(--font-size-3);
  opacity: 0.9;
  margin: 0;
}

/* ---------- 案例区 ---------- */
.cases-section {
  padding: var(--space-8) 0;
  background: var(--color-bg-page);
}

.cases-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.cases-section .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.cases-section .section-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-3);
  margin: 0;
}

/* 筛选标签 */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.filter-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-3);
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  font-size: var(--font-size-3);
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.filter-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* 案例网格 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.case-card {
  background: #fff;
  border-radius: var(--radius-3);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.case-card .case-cover {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--font-size-4);
  font-weight: 600;
  position: relative;
  overflow: hidden;
}

.case-card:nth-child(1) .case-cover { background: linear-gradient(135deg, #667EEA, #764BA2); }
.case-card:nth-child(2) .case-cover { background: linear-gradient(135deg, #F093FB, #F5576C); }
.case-card:nth-child(3) .case-cover { background: linear-gradient(135deg, #4FACFE, #00F2FE); }
.case-card:nth-child(4) .case-cover { background: linear-gradient(135deg, #43E97B, #38F9D7); }
.case-card:nth-child(5) .case-cover { background: linear-gradient(135deg, #FA709A, #FEE140); }
.case-card:nth-child(6) .case-cover { background: linear-gradient(135deg, #30CFD0, #330867); }

.case-card .case-body {
  padding: var(--space-4);
}

.case-card .case-tag {
  display: inline-block;
  font-size: var(--font-size-2);
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 2px var(--space-2);
  border-radius: var(--radius-2);
  margin-bottom: var(--space-2);
}

.case-card .case-title {
  font-size: var(--font-size-4);
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-2);
}

.case-card .case-desc {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
  margin: 0;
  line-height: 1.5;
}

/* 统计卡片 */
.stats-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.stat-card {
  background: #fff;
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: var(--space-6) var(--space-5);
  text-align: center;
}

.stat-card .stat-number {
  font-size: 42px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--space-2);
}

.stat-card .stat-label {
  font-size: var(--font-size-3);
  color: var(--color-text-2);
  margin: 0;
}

/* 案例底部 CTA */
.cases-cta {
  background: linear-gradient(135deg, #165DFF, #4080FF);
  border-radius: var(--radius-4);
  padding: var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  color: #fff;
}

.cases-cta .cta-text h3 {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.cases-cta .cta-text p {
  font-size: var(--font-size-3);
  opacity: 0.9;
  margin: 0;
}

/* ---------- FAQ 区 ---------- */
.faq-section {
  padding: var(--space-8) 0;
  background: #fff;
}

.faq-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.faq-section .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.faq-section .section-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-3);
  margin: 0;
}

/* 搜索框 */
.faq-search {
  max-width: 640px;
  margin: 0 auto var(--space-7);
  position: relative;
}

.faq-search input {
  width: 100%;
  padding: var(--space-4) var(--space-5) var(--space-4) var(--space-7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  font-size: var(--font-size-3);
  background: var(--color-fill-1);
  transition: all var(--transition-normal);
  box-sizing: border-box;
}

.faq-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.faq-search .search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
}

/* 分类图标网格 */
.faq-categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.faq-category-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  padding: var(--space-5) var(--space-3);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.faq-category-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.faq-category-card .category-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: var(--font-size-4);
}

.faq-category-card .category-label {
  font-size: var(--font-size-3);
  color: var(--color-text-1);
  font-weight: 500;
}

/* 两栏布局 */
.faq-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-7);
}

.faq-two-col .col-left h3,
.faq-two-col .col-right h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-4);
}

/* TOP10 手风琴 */
.faq-accordion .accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-accordion .accordion-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: var(--space-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: var(--font-size-3);
  color: var(--color-text-1);
  font-weight: 500;
  text-align: left;
  transition: color var(--transition-normal);
}

.faq-accordion .accordion-question:hover {
  color: var(--color-primary);
}

.faq-accordion .accordion-answer {
  padding: 0 0 var(--space-4);
  font-size: var(--font-size-3);
  color: var(--color-text-2);
  line-height: 1.6;
  display: none;
}

.faq-accordion .accordion-item.open .accordion-answer {
  display: block;
}

.faq-accordion .accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

.faq-accordion .accordion-icon {
  transition: transform var(--transition-normal);
  color: var(--color-text-3);
}

/* 分类卡片堆叠 */
.faq-category-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-category-list .mini-card {
  background: var(--color-fill-1);
  border-radius: var(--radius-2);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.faq-category-list .mini-card:hover {
  background: var(--color-primary-light);
}

.faq-category-list .mini-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-category-list .mini-info {
  flex: 1;
}

.faq-category-list .mini-title {
  font-size: var(--font-size-3);
  font-weight: 500;
  color: var(--color-text-1);
  margin: 0 0 4px;
}

.faq-category-list .mini-desc {
  font-size: var(--font-size-2);
  color: var(--color-text-3);
  margin: 0;
}

/* 客服卡片 */
.customer-service-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-5);
  background: var(--color-fill-1);
  border-radius: var(--radius-3);
  padding: var(--space-5);
  margin-bottom: var(--space-7);
  align-items: center;
}

.customer-service-card .cs-info h4 {
  font-size: var(--font-size-4);
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-2);
}

.customer-service-card .cs-info p {
  font-size: var(--font-size-3);
  color: var(--color-text-3);
  margin: 0;
  line-height: 1.5;
}

.customer-service-card .cs-qr {
  width: 80px;
  height: 80px;
  background: #fff;
  border-radius: var(--radius-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-3);
  font-size: var(--font-size-2);
  text-align: center;
}

/* FAQ 底部 CTA */
.faq-cta {
  background: linear-gradient(135deg, #165DFF, #4080FF);
  border-radius: var(--radius-4);
  padding: var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  color: #fff;
}

.faq-cta .cta-text h3 {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.faq-cta .cta-text p {
  font-size: var(--font-size-3);
  opacity: 0.9;
  margin: 0;
}

/* ---------- About 区 ---------- */
.about-section {
  padding: var(--space-8) 0;
  background: var(--color-bg-page);
}

.about-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.about-section .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.about-section .section-desc {
  font-size: var(--font-size-4);
  color: var(--color-text-3);
  margin: 0;
}

.about-section .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}

.about-section .about-content h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-1);
  margin: 0 0 var(--space-3);
}

.about-section .about-content p {
  font-size: var(--font-size-3);
  color: var(--color-text-2);
  line-height: 1.7;
  margin: 0 0 var(--space-3);
}

.about-section .about-image {
  background: linear-gradient(135deg, var(--color-primary-light), #E8F3FF);
  border-radius: var(--radius-4);
  padding: var(--space-7);
  text-align: center;
  color: var(--color-primary);
  font-size: var(--font-size-5);
  font-weight: 600;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 联系区 ---------- */
.contact-section {
  padding: var(--space-8) 0;
  background: #fff;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--color-text-1);
  color: #fff;
  padding: var(--space-8) 0 var(--space-5);
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-7);
}

.site-footer .footer-brand .brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.site-footer .footer-brand .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #4080FF);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
}

.site-footer .footer-brand .brand-name {
  font-size: 18px;
  font-weight: 600;
}

.site-footer .footer-brand .brand-desc {
  font-size: var(--font-size-3);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin: 0 0 var(--space-4);
}

.site-footer .footer-social {
  display: flex;
  gap: var(--space-3);
}

.site-footer .footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-decoration: none;
  transition: all var(--transition-normal);
  font-size: var(--font-size-3);
}

.site-footer .footer-social a:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.site-footer .footer-col h4 {
  font-size: var(--font-size-3);
  font-weight: 600;
  margin: 0 0 var(--space-4);
  color: #fff;
}

.site-footer .footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer .footer-col ul a {
  font-size: var(--font-size-3);
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.site-footer .footer-col ul a:hover {
  color: #fff;
}

.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-2);
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-2);
  border: none;
  font-size: var(--font-size-4);
  z-index: 99;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
}

/* ---------- 响应式 ---------- */

/* ≤1200px */
@media (max-width: 1200px) {
  .container {
    max-width: 960px;
  }

  .component-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ≤1024px */
@media (max-width: 1024px) {
  .hero-section .container,
  .feature-row,
  .about-section .about-grid,
  .contact-section .container {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .feature-row.reverse {
    direction: ltr;
  }

  .pricing-section .pricing-cards,
  .stats-section,
  .case-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-section .pricing-card.featured {
    transform: none;
  }

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

  .component-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .timeline-block .timeline-steps {
    flex-wrap: wrap;
    gap: var(--space-5);
  }

  .timeline-block .step-arrow {
    display: none;
  }

  .timeline-block .step-item {
    flex: 0 0 calc(50% - var(--space-3));
    margin-bottom: var(--space-3);
  }

  .faq-two-col {
    grid-template-columns: 1fr;
  }
}

/* ≤768px */
@media (max-width: 768px) {
  .site-navbar .navbar-nav,
  .site-navbar .navbar-actions .btn-ghost {
    display: none;
  }

  .site-navbar .hamburger {
    display: flex;
  }

  .hero-section {
    padding-top: 100px;
  }

  .hero-section .hero-title {
    font-size: 28px;
  }

  .hero-section .hero-desc {
    font-size: var(--font-size-3);
  }

  .hero-section .phone-mockup {
    width: 260px;
    height: 520px;
  }

  .pricing-section .pricing-cards,
  .stats-section,
  .case-grid {
    grid-template-columns: 1fr;
  }

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

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

  .features-cta,
  .pricing-cta,
  .cases-cta,
  .faq-cta {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }

  .features-cta .cta-text,
  .pricing-cta .cta-text,
  .cases-cta .cta-text,
  .faq-cta .cta-text {
    text-align: center;
  }

  .customer-service-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .customer-service-card .cs-qr {
    margin: 0 auto;
  }

  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }

  .site-footer .footer-bottom {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }

  .timeline-block .step-item {
    flex: 0 0 100%;
  }

  .dashboard-mockup .stat-row {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 28px;
  }
}

/* ≤480px */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }

  .hero-section .hero-title {
    font-size: 24px;
  }

  .hero-section .hero-desc {
    font-size: var(--font-size-2);
  }

  .feature-row h3 {
    font-size: 22px;
  }

  .pricing-section .section-title,
  .cases-section .section-title,
  .faq-section .section-title,
  .about-section .section-title {
    font-size: 24px;
  }

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

  .tools-mockup .tools-grid {
    grid-template-columns: 1fr;
  }

  .site-footer .footer-grid {
    grid-template-columns: 1fr;
  }

  .phone-mockup {
    width: 240px;
    height: 480px;
  }

  .features-cta,
  .pricing-cta,
  .cases-cta,
  .faq-cta {
    padding: var(--space-5);
  }
}