/**
 * landing-optimized.css - 营销首页样式（优化版）
 * 基于SB7故事品牌框架设计
 * 修复了所有CSS语法错误，优化了浏览器兼容性
 */

/* ─── 基础样式 ─────────────────────────────────────────── */
.landing-page {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
               'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: #1a1a2e;
  background: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── 导航栏 ─────────────────────────────────────────── */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid #e8e8e8;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
}

/* 移动端汉堡菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  color: #1a1a2e;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 16px 24px;
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }

  .nav-links.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 16px;
  }

  .nav-actions {
    margin-left: auto;
  }
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #1677ff;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
}

/* 手机版 logo 断行：桌面隐藏 br */
.logo-break { display: none; }

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: #595959;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #1677ff;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ─── Hero Section ─────────────────────────────────────── */
.hero-section {
  padding: 120px 24px 80px;
  background: linear-gradient(135deg, #f0f2f5 0%, #e6f4ff 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  color: #1a1a2e;
  letter-spacing: -1px;
}

.text-gradient {
  background: linear-gradient(135deg, #1677ff 0%, #36cfc9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: #595959;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-subtitle strong {
  color: #1677ff;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: #1677ff;
  line-height: 1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 14px;
  color: #8c8c8c;
  margin-top: 8px;
  font-weight: 500;
}

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

.hero-image-container {
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-image-card {
  width: 200px;
}

.image-label {
  font-size: 12px;
  font-weight: 600;
  color: #8c8c8c;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.image-placeholder {
  background: #f5f5f5;
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  border: 2px dashed #d9d9d9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 160px;
}

.image-placeholder.success {
  background: #f6ffed;
  border-color: #b7eb8f;
}

.placeholder-icon {
  font-size: 48px;
  display: block;
  margin-bottom: 12px;
}

.placeholder-text {
  font-size: 14px;
  color: #595959;
  line-height: 1.6;
}

.hero-image-arrow {
  font-size: 32px;
  color: #1677ff;
  font-weight: 700;
  display: flex;
  align-items: center;
}

/* ─── 通用Section样式 ──────────────────────────────────── */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: #1a1a2e;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 16px;
  color: #8c8c8c;
  text-align: center;
  margin-bottom: 48px;
}

/* ─── 痛点展示区 ──────────────────────────────────────── */
.problems-section {
  padding: 100px 0;
  background: #ffffff;
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
  border-color: #ff4d4f;
}

.problem-icon {
  margin-bottom: 16px;
}

.problem-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a2e;
}

.problem-desc {
  font-size: 14px;
  color: #595959;
  line-height: 1.8;
  margin-bottom: 20px;
}

.problem-desc strong {
  color: #ff4d4f;
  font-weight: 600;
}

.problem-data {
  background: #fff1f0;
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.data-label {
  font-size: 13px;
  color: #8c8c8c;
}

.data-value {
  font-size: 16px;
  font-weight: 700;
  color: #ff4d4f;
}

/* ─── 解决方案区 ──────────────────────────────────────── */
.solutions-section {
  padding: 100px 0;
  background: #f0f2f5;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.solution-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
  position: relative;
}

.solution-card.featured {
  border-color: #1677ff;
  box-shadow: 0 8px 24px rgba(22, 119, 255, 0.15);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #1677ff;
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 16px;
  white-space: nowrap;
}

.solution-icon {
  margin-bottom: 16px;
}

.solution-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a2e;
}

.solution-desc {
  font-size: 14px;
  color: #595959;
  line-height: 1.8;
  margin-bottom: 20px;
}

.solution-desc strong {
  color: #1677ff;
  font-weight: 600;
}

.solution-benefits {
  margin-bottom: 24px;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.benefit-icon {
  width: 20px;
  height: 20px;
  background: #f6ffed;
  color: #52c41a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.benefit-text {
  font-size: 14px;
  color: #595959;
}

/* ─── 对比区 ─────────────────────────────────────────── */
.comparison-section {
  padding: 100px 0;
  background: #ffffff;
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid #e8e8e8;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.comparison-table thead th {
  background: #f0f2f5;
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  color: #1a1a2e;
  border-bottom: 1px solid #e8e8e8;
  white-space: nowrap;
}

.comparison-table tbody td {
  padding: 16px 20px;
  border-bottom: 1px solid #f0f0f0;
  color: #595959;
}

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

.comparison-table tbody tr:hover {
  background: #e6f4ff;
}

.text-danger {
  color: #ff4d4f;
  font-weight: 500;
}

.text-success {
  color: #52c41a;
  font-weight: 500;
}

/* ─── 成功案例区 ──────────────────────────────────────── */
.cases-section {
  padding: 100px 0;
  background: #f0f2f5;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.case-quote {
  font-size: 16px;
  color: #1a1a2e;
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
  border-left: 3px solid #1677ff;
  padding-left: 16px;
}

.case-results {
  margin-bottom: 24px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}

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

.result-label {
  font-size: 14px;
  color: #8c8c8c;
}

.result-value {
  font-size: 14px;
  font-weight: 600;
  color: #1677ff;
}

.case-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #1677ff 0%, #36cfc9 100%);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.author-name {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a2e;
}

.author-title {
  font-size: 13px;
  color: #8c8c8c;
  margin-top: 2px;
}

/* ─── 定价区 ─────────────────────────────────────────── */
.pricing-section {
  padding: 100px 0;
  background: #ffffff;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
  position: relative;
}

.pricing-card.featured {
  border-color: #1677ff;
  box-shadow: 0 8px 24px rgba(22, 119, 255, 0.15);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #1677ff;
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 16px;
  white-space: nowrap;
}

.pricing-header {
  text-align: center;
  margin-bottom: 24px;
}

.pricing-tag {
  font-size: 14px;
  color: #8c8c8c;
  margin-bottom: 4px;
}

.pricing-name {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a2e;
}

.pricing-price {
  text-align: center;
  margin-bottom: 12px;
}

.price-currency {
  font-size: 20px;
  font-weight: 600;
  color: #1a1a2e;
  vertical-align: top;
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  color: #1677ff;
  line-height: 1;
  letter-spacing: -2px;
}

.price-period {
  font-size: 14px;
  color: #8c8c8c;
}

.pricing-desc {
  text-align: center;
  font-size: 14px;
  color: #8c8c8c;
  margin-bottom: 24px;
}

.pricing-features {
  margin-bottom: 32px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-size: 14px;
  color: #595959;
}

.feature-item.disabled {
  color: #bfbfbf;
}

.feature-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.feature-item .feature-icon {
  background: #f6ffed;
  color: #52c41a;
}

.feature-item.disabled .feature-icon {
  background: #f5f5f5;
  color: #bfbfbf;
}

/* ─── FAQ区 ──────────────────────────────────────────── */
.faq-section {
  padding: 100px 0;
  background: #f0f2f5;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
  cursor: pointer;
}

.faq-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.faq-question {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: #1677ff;
  font-weight: 700;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-answer {
  font-size: 14px;
  color: #595959;
  line-height: 1.8;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding-top: 0;
  padding-bottom: 0;
}

.faq-item.active .faq-answer {
  max-height: 800px;
  padding-top: 12px;
  padding-bottom: 4px;
}

/* ─── CTA区 ────────────────────────────────────────── */
.cta-section {
  padding: 100px 24px;
  background: linear-gradient(135deg, #1677ff 0%, #0050b3 100%);
  text-align: center;
}

.cta-title {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.cta-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.cta-actions .btn-primary {
  background: #ffffff;
  color: #1677ff;
  border: none;
}

.cta-actions .btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}

.cta-actions .btn-outline {
  border-color: #ffffff;
  color: #ffffff;
}

.cta-actions .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ─── 页脚 ──────────────────────────────────────────── */
.landing-footer {
  background: #1a1a2e;
  color: #ffffff;
  padding: 60px 24px 24px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  margin-bottom: 40px;
}

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

.footer-logo .logo-icon {
  font-size: 36px;
}

.footer-logo .logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #1677ff;
}

.footer-desc {
  font-size: 14px;
  color: #8c8c8c;
  margin-top: 12px;
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: #8c8c8c;
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}

.footer-column a:hover {
  color: #1677ff;
}

.footer-bottom {
  border-top: 1px solid #303030;
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: #8c8c8c;
}

/* ─── 按钮样式 ────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, #1677ff 0%, #36cfc9 100%);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(22, 119, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(22, 119, 255, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid #1677ff;
  color: #1677ff;
}

.btn-outline:hover {
  background: #e6f4ff;
}

.btn-ghost {
  background: transparent;
  color: #595959;
}

.btn-ghost:hover {
  color: #1677ff;
  background: #f0f0f0;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: 12px;
}

.btn-full {
  width: 100%;
}

/* ─── 表单弹窗 ─────────────────────────────────────── */
.form-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.form-modal.active {
  display: flex;
}

.form-modal-content {
  background: #ffffff;
  border-radius: 16px;
  padding: 40px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 24px;
  color: #8c8c8c;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s ease;
}

.form-modal-close:hover {
  background: #f5f5f5;
  color: #262626;
}

.form-modal-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: #262626;
  margin-bottom: 8px;
}

.form-desc {
  font-size: 14px;
  color: #8c8c8c;
  margin-bottom: 24px;
  line-height: 1.6;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #595959;
  margin-bottom: 8px;
}

.required {
  color: #ff4d4f;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #d9d9d9;
  border-radius: 8px;
  font-size: 14px;
  color: #262626;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1677ff;
  box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #bfbfbf;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-error {
  font-size: 12px;
  color: #ff4d4f;
  margin-top: 4px;
  min-height: 18px;
}

/* ─── 社会证明（客户Logo墙）────────────────────────── */
.trust-section {
  padding: 60px 0;
  background: #ffffff;
  border-top: 1px solid #f0f0f0;
  border-bottom: 1px solid #f0f0f0;
}

.trust-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.trust-title {
  font-size: 14px;
  font-weight: 600;
  color: #bfbfbf;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 32px;
}

.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.trust-logo {
  font-size: 18px;
  font-weight: 700;
  color: #bfbfbf;
  opacity: 0.6;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.trust-logo:hover {
  opacity: 1;
}

/* ─── 滚动显示动画 ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ─── 响应式设计 ──────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 28px;
  }

  .problems-grid,
  .solutions-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .hero-image-container {
    flex-direction: column;
  }

  .hero-image-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .cta-actions {
    flex-direction: column;
  }

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

  /* logo 两行显示 */
  .logo-break { display: inline; }
  .logo-text { font-size: 12px !important; line-height: 1.15; }
  .logo-icon { font-size: 22px; }
}

/* ─── 小程序 web-view 环境：隐藏桌面端导航与无意义链接 ─── */
body.mini-webview .nav-actions           { display: none !important; }
body.mini-webview .mobile-menu-btn       { display: none !important; }
body.mini-webview .nav-links.mobile-open { display: none !important; }
body.mini-webview .topbar-actions        { display: none !important; }  /* guest-topbar 登录/注册/主题 */
body.mini-webview .guide-pricing-link    { display: none !important; }
body.mini-webview .logo-break            { display: none !important; }
body.mini-webview .logo-text             { white-space: nowrap; font-size: 18px !important; }

/* ─── 深色模式支持 ───────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  .landing-page {
    background: #141414;
    color: #e8e8e8;
  }

  .landing-nav {
    background: rgba(20, 20, 46, 0.95);
    border-bottom-color: #303030;
  }

  .hero-section {
    background: linear-gradient(135deg, #141414 0%, #1a1a2e 100%);
  }

  .problems-section,
  .comparison-section,
  .pricing-section {
    background: #141414;
  }

  .solutions-section,
  .cases-section,
  .faq-section {
    background: #1a1a2e;
  }

  .problem-card,
  .solution-card,
  .case-card,
  .pricing-card,
  .faq-item {
    background: #1f1f1f;
    border-color: #303030;
  }

  .section-title {
    color: #e8e8e8;
  }

  .hero-title {
    color: #e8e8e8;
  }

  .problem-title,
  .solution-title {
    color: #e8e8e8;
  }
}

/* ─── 滚动平滑 ──────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}