*,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  :root {
    --bg-base: #f2f9fc;
    --bg-gradient: linear-gradient(165deg, #eef9ff 0%, #dff4fc 30%, #f5fcff 70%, #e8f6fe 100%);
    --surface: #ffffff;
    --surface-soft: #f4fbff;
    --border-light: rgba(0, 140, 170, 0.12);
    --border-glow: rgba(0, 160, 220, 0.25);
    --primary: #0a7e9e;
    --primary-soft: #e2f3fa;
    --primary-gradient: linear-gradient(120deg, #0b8aac, #0fb6d4);
    --text-main: #0f2a3a;
    --text-secondary: #2b4d5e;
    --text-muted: #4a6e7e;
    --shadow-card: 0 8px 28px -6px rgba(8, 88, 116, 0.10);
    --shadow-hover: 0 18px 40px -10px rgba(8, 120, 150, 0.22);
    --radius-card: 20px;
    --radius-btn: 40px;
    --font-stack: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  }
  body {
    font-family: var(--font-stack);
    background: var(--bg-base);
    background-image: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a {
    text-decoration: none;
    color: inherit;
  }
  ul {
    list-style: none;
  }
  img {
    display: block;
    max-width: 100%;
    height: auto;
  }

  /* 通用容器 */
  .container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* 滚动渐入基础 */
  .fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
  }
  .fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* 按钮通用 */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 28px;
    transition: all 0.25s ease;
    cursor: pointer;
    border: none;
    line-height: 1.4;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 6px 16px -4px rgba(11, 138, 172, 0.45);
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -8px rgba(11, 138, 172, 0.65);
    filter: brightness(1.04);
  }
  .btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
  }
  .btn-outline:hover {
    background: rgba(10, 126, 158, 0.06);
    transform: translateY(-2px);
  }
  .btn-soft {
    background: var(--primary-soft);
    color: var(--primary);
    border: 1px solid transparent;
  }
  .btn-soft:hover {
    background: #d0eaf6;
    transform: translateY(-1px);
  }

  /* 顶部导航 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    transition: box-shadow 0.3s;
  }
  .nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
    padding: 10px 0;
    flex-wrap: wrap;
    gap: 8px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand img {
    height: 36px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
  }
  .brand-text {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    color: var(--text-main);
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 0;           /* 按需求设置为0 */
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
  }
  .nav-links li {
    margin: 0;
    padding: 0;
  }
  .nav-links a {
    display: block;
    padding: 8px 14px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 40px;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
  }
  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: var(--primary-soft);
    color: var(--primary);
  }
  .nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .nav-actions .btn {
    padding: 8px 20px;
    font-size: 0.85rem;
  }
  .menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    width: 42px;
    height: 42px;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
  }
  .menu-toggle:hover {
    background: var(--surface-soft);
  }

  /* 移动端导航 */
  @media (max-width: 900px) {
    .nav-wrap {
      flex-wrap: nowrap;
    }
    .nav-links {
      display: none;
      order: 3;
      flex-direction: column;
      width: 100%;
      align-items: stretch;
      gap: 2px;
      padding: 12px 0 8px;
      border-top: 1px solid var(--border-light);
      margin-top: 10px;
    }
    .nav-links.is-open {
      display: flex;
    }
    .nav-links a {
      padding: 10px 14px;
      border-radius: 12px;
    }
    .menu-toggle {
      display: inline-flex;
    }
    .nav-actions .btn-outline {
      display: none;
    }
    .nav-actions .btn-primary {
      padding: 8px 16px;
      font-size: 0.8rem;
    }
    .nav-wrap {
      flex-wrap: wrap;
    }
  }

  /* Hero 首屏 - 无图片 */
  .hero {
    position: relative;
    padding: 56px 0 64px;
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 70% at 20% 20%, rgba(0, 180, 220, 0.08), transparent 65%),
                radial-gradient(ellipse 60% 80% at 85% 70%, rgba(0, 140, 200, 0.07), transparent 60%);
    pointer-events: none;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 2;
  }
  .hero-content {
    max-width: 620px;
  }
  .hero-eyebrow {
    display: inline-block;
    background: rgba(10, 126, 158, 0.10);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    padding: 6px 16px;
    border-radius: 40px;
    margin-bottom: 18px;
    border: 1px solid rgba(10, 126, 158, 0.15);
  }
  .hero h1 {
    font-size: clamp(2rem, 4.6vw, 3.3rem);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.03em;
    color: var(--text-main);
    margin-bottom: 18px;
  }
  .hero h1 span {
    background: linear-gradient(120deg, #0b7e9e, #0dbad6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
  }
  .hero-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 28px;
    line-height: 1.7;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-bottom: 36px;
  }
  .hero-actions .btn-primary {
    padding: 14px 34px;
    font-size: 1.05rem;
  }
  .hero-actions .ai-page-home-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    padding: 10px 16px;
    border-radius: 40px;
    border: 1.5px dashed var(--border-glow);
    transition: background 0.2s;
  }
  .hero-actions .ai-page-home-link:hover {
    background: var(--primary-soft);
  }
  .hero-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    margin-top: 8px;
  }
  .metric-item {
    display: flex;
    flex-direction: column;
    padding-right: 8px;
  }
  .metric-num {
    font-size: 1.7rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.2;
    letter-spacing: -0.02em;
  }
  .metric-num small {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    margin-left: 2px;
  }
  .metric-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 2px;
  }

  /* hero 右侧视觉块 - 纯CSS */
  .hero-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .hero-panel {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 28px;
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .hero-panel:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .panel-tag {
    display: inline-block;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    padding: 4px 14px;
    border-radius: 40px;
    margin-bottom: 14px;
  }
  .panel-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
  }
  .panel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
    box-shadow: 0 0 0 5px rgba(10, 126, 158, 0.10);
  }
  .panel-bar {
    height: 8px;
    border-radius: 10px;
    background: linear-gradient(90deg, #cdeef7, #b3e2f2);
    flex: 1;
  }
  .panel-bar.short {
    max-width: 60%;
  }
  .panel-bar.mid {
    max-width: 80%;
  }
  .panel-chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
  }
  .chip {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 40px;
    padding: 5px 14px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
  }
  .chip:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
    color: var(--primary);
  }
  .hero-subpanel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .mini-card {
    background: #ffffff;
    border-radius: 18px;
    padding: 16px 14px;
    border: 1px solid var(--border-light);
    box-shadow: 0 4px 12px -4px rgba(0,0,0,0.04);
    transition: transform 0.25s, box-shadow 0.25s;
  }
  .mini-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
  }
  .mini-card .mini-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 4px;
  }
  .mini-card .mini-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
  }

  /* 通用区块 */
  .section {
    padding: 64px 0;
    position: relative;
  }
  .section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 44px;
  }
  .section-eyebrow {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    padding: 5px 16px;
    border-radius: 40px;
    margin-bottom: 14px;
    text-transform: uppercase;
  }
  .section-header h2 {
    font-size: clamp(1.6rem, 3.2vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-main);
    line-height: 1.25;
    margin-bottom: 12px;
  }
  .section-header p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.65;
  }

  /* 卡片通用 */
  .card {
    background: var(--surface);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-light);
    padding: 26px 24px;
    box-shadow: var(--shadow-card);
    transition: transform 0.28s cubic-bezier(0.2,0.7,0.3,1), box-shadow 0.28s;
  }
  .card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-glow);
  }

  /* 平台介绍双栏 */
  .intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .intro-text h2 {
    font-size: clamp(1.5rem, 2.8vw, 2.1rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--text-main);
  }
  .intro-text p {
    color: var(--text-muted);
    margin-bottom: 18px;
    font-size: 0.98rem;
    line-height: 1.75;
  }
  .intro-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
  }
  .intro-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.92rem;
    color: var(--text-secondary);
  }
  .intro-list li::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.75rem;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .intro-image-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .intro-image-group .img-card {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: #fff;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s;
  }
  .intro-image-group .img-card:hover {
    transform: scale(1.02);
  }
  .intro-image-group .img-card img {
    width: 100%;
    height: auto;
    object-fit: cover;
    aspect-ratio: 16/10;
  }

  /* 服务能力卡片网格 */
  .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
  }
  .service-card {
    background: var(--surface);
    border-radius: 18px;
    padding: 22px 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: all 0.28s;
  }
  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-glow);
  }
  .service-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 14px;
  }
  .service-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
  }
  .service-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.55;
  }

  /* 流程步骤 */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
  }
  .step-item {
    background: var(--surface);
    border-radius: 20px;
    padding: 28px 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: all 0.3s;
    position: relative;
  }
  .step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--primary-gradient);
    color: #fff;
    font-weight: 800;
    font-size: 0.95rem;
    margin-bottom: 16px;
  }
  .step-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
  }
  .step-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.55;
  }

  /* 对比表格 */
  .compare-table-wrap {
    overflow-x: auto;
    border-radius: 20px;
    border: 1px solid var(--border-light);
    background: #fff;
    box-shadow: var(--shadow-card);
    -webkit-overflow-scrolling: touch;
  }
  .compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 680px;
    font-size: 0.9rem;
  }
  .compare-table th,
  .compare-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
  }
  .compare-table th {
    background: var(--surface-soft);
    font-weight: 700;
    color: var(--text-main);
    font-size: 0.85rem;
    letter-spacing: 0.03em;
  }
  .compare-table td {
    color: var(--text-secondary);
  }
  .compare-table tr:last-child td {
    border-bottom: none;
  }
  .rating-stars {
    color: #f5b342;
    font-size: 1.1rem;
    letter-spacing: 2px;
  }
  .score-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 40px;
    font-size: 0.85rem;
  }
  .compare-highlight {
    background: linear-gradient(90deg, rgba(10,126,158,0.04), transparent);
    font-weight: 600;
    color: var(--text-main);
  }

  /* FAQ 折叠 */
  .faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .faq-item {
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: box-shadow 0.25s, border-color 0.25s;
  }
  .faq-item:hover {
    border-color: var(--border-glow);
    box-shadow: 0 4px 16px rgba(10,126,158,0.08);
  }
  .faq-question {
    width: 100%;
    text-align: left;
    padding: 18px 24px;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-main);
    background: transparent;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.5;
    transition: background 0.2s;
  }
  .faq-question:hover {
    background: var(--surface-soft);
  }
  .faq-question .icon-plus {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--primary);
    transition: transform 0.3s;
    flex-shrink: 0;
    margin-left: 16px;
  }
  .faq-item.active .faq-question .icon-plus {
    transform: rotate(45deg);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.3, 0.7, 0.3, 1), padding 0.3s;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.7;
    background: rgba(255,255,255,0.6);
  }
  .faq-item.active .faq-answer {
    padding: 0 24px 20px;
    max-height: 300px;
  }

  /* 评论卡片 */
  .reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  .review-card {
    background: var(--surface);
    border-radius: 20px;
    padding: 24px 22px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: all 0.28s;
    display: flex;
    flex-direction: column;
  }
  .review-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
  }
  .review-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
  }
  .review-name {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--text-main);
  }
  .review-role {
    font-size: 0.75rem;
    color: var(--text-muted);
  }
  .review-stars {
    color: #f5b342;
    font-size: 0.9rem;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .review-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
  }

  /* 案例图片区 */
  .cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  .case-card {
    border-radius: 20px;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
  }
  .case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .case-img-wrap {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--surface-soft);
  }
  .case-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
  }
  .case-card:hover .case-img-wrap img {
    transform: scale(1.04);
  }
  .case-body {
    padding: 18px 20px;
  }
  .case-body h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
  }
  .case-body p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
  }

  /* 文章列表 */
  .articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 18px;
  }
  .article-card {
    background: #fff;
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: all 0.25s;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .article-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-glow);
  }
  .article-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 2px 12px;
    border-radius: 40px;
    align-self: flex-start;
    margin-bottom: 4px;
  }
  .article-card h3 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.45;
  }
  .article-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.5;
  }
  .article-card .read-more {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: 6px;
    display: inline-block;
  }

  /* 表单 */
  .form-section {
    background: var(--surface);
    border-radius: 28px;
    padding: 40px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
  }
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
  .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .form-group.full-width {
    grid-column: 1 / -1;
  }
  .form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
  }
  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1.5px solid var(--border-light);
    background: var(--surface-soft);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-main);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
  }
  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10,126,158,0.12);
    background: #fff;
  }
  .form-group textarea {
    resize: vertical;
    min-height: 110px;
  }
  .form-submit-wrap {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
  }
  .form-note {
    font-size: 0.78rem;
    color: var(--text-muted);
  }

  /* 联系信息卡 */
  .contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 28px;
  }
  .contact-card {
    background: var(--surface-soft);
    border-radius: 16px;
    padding: 18px 16px;
    border: 1px solid var(--border-light);
    transition: background 0.2s;
  }
  .contact-card:hover {
    background: #e8f5fb;
  }
  .contact-card .contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    margin-bottom: 6px;
  }
  .contact-card .contact-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    word-break: break-all;
  }
  .contact-card .kefu-img {
    margin-top: 8px;
    border-radius: 12px;
    max-width: 140px;
    border: 1px solid var(--border-light);
  }

  /* 友情链接 */
  .friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    justify-content: center;
    align-items: center;
    margin-top: 12px;
  }
  .friend-links a {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 40px;
    background: rgba(255,255,255,0.6);
    border: 1px solid var(--border-light);
    transition: all 0.2s;
  }
  .friend-links a:hover {
    background: var(--primary-soft);
    color: var(--primary);
    border-color: var(--border-glow);
  }

  /* 页脚 */
  .site-footer {
    background: #0e2633;
    color: #d6eaf2;
    padding: 48px 0 24px;
    margin-top: 0;
    border-top: 1px solid rgba(255,255,255,0.06);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
  }
  .footer-brand p {
    font-size: 0.85rem;
    color: #b8d4e2;
    line-height: 1.7;
    margin-top: 12px;
    max-width: 360px;
  }
  .footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
  }
  .footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .footer-col a {
    font-size: 0.82rem;
    color: #a8c9d8;
    transition: color 0.2s;
  }
  .footer-col a:hover {
    color: #6bd4ee;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.78rem;
    color: #8fb4c6;
  }
  .footer-bottom a {
    color: #a8c9d8;
  }
  .footer-bottom a:hover {
    color: #6bd4ee;
  }

  /* 浮动客服 & 返回顶部 */
  .float-actions {
    position: fixed;
    right: 20px;
    bottom: 28px;
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .float-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    color: var(--primary);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s;
    border: 1px solid var(--border-light);
  }
  .float-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(10,126,158,0.22);
    background: var(--primary-soft);
  }
  .kefu-pop {
    position: fixed;
    right: 76px;
    bottom: 28px;
    z-index: 59;
    background: #fff;
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 12px 36px rgba(0,0,0,0.15);
    border: 1px solid var(--border-light);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 180px;
  }
  .kefu-pop.show {
    display: flex;
  }
  .kefu-pop img {
    width: 140px;
    height: 140px;
    object-fit: contain;
    border-radius: 10px;
  }
  .kefu-pop span {
    font-size: 0.75rem;
    color: var(--text-muted);
  }

  /* 响应式 */
  @media (max-width: 1024px) {
    .hero-grid {
      grid-template-columns: 1fr;
      gap: 36px;
    }
    .hero-content {
      max-width: 100%;
    }
    .intro-grid {
      grid-template-columns: 1fr;
    }
    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .reviews-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .cases-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }
  @media (max-width: 768px) {
    .container {
      padding: 0 18px;
    }
    .section {
      padding: 44px 0;
    }
    .hero {
      padding: 36px 0 44px;
    }
    .hero h1 {
      font-size: 1.9rem;
    }
    .hero-metrics {
      gap: 20px;
    }
    .reviews-grid {
      grid-template-columns: 1fr;
    }
    .cases-grid {
      grid-template-columns: 1fr;
    }
    .form-grid {
      grid-template-columns: 1fr;
    }
    .form-section {
      padding: 24px 18px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }
    .compare-table th,
    .compare-table td {
      padding: 12px 14px;
      font-size: 0.82rem;
    }
    .services-grid {
      grid-template-columns: 1fr 1fr;
    }
    .steps-grid {
      grid-template-columns: 1fr;
    }
    .hero-subpanel {
      grid-template-columns: 1fr;
    }
    .float-actions {
      right: 14px;
      bottom: 18px;
    }
  }
  @media (max-width: 480px) {
    .services-grid {
      grid-template-columns: 1fr;
    }
    .hero-metrics {
      flex-direction: column;
      gap: 14px;
    }
    .nav-actions .btn-primary {
      padding: 7px 12px;
      font-size: 0.75rem;
    }
    .hero h1 {
      font-size: 1.6rem;
    }
  }