:root {
      --primary-grad: linear-gradient(135deg, #FF5E7E 0%, #FF9966 25%, #FFD166 50%, #06D6A0 75%, #118AB2 100%);
      --rainbow-accent: #FF5E7E;
      --rainbow-blue: #118AB2;
      --rainbow-green: #06D6A0;
      --rainbow-yellow: #FFD166;
      --rainbow-purple: #8338EC;
      --bg-light: #FBFBFE;
      --bg-alt: #F4F6FB;
      --card-bg: #FFFFFF;
      --text-main: #1D2330;
      --text-muted: #5A6478;
      --text-light: #8B95A5;
      --border-color: #E6EAF2;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 12px rgba(29, 35, 48, 0.04);
      --shadow-md: 0 10px 30px rgba(29, 35, 48, 0.08);
      --shadow-hover: 0 16px 36px rgba(255, 94, 126, 0.15);
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 20%, rgba(255, 94, 126, 0.03) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(17, 138, 178, 0.03) 0%, transparent 40%),
                  var(--bg-light);
      color: var(--text-main);
      overflow-x: hidden;
      min-width: 320px;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部彩虹光条 */
    .rainbow-bar {
      height: 4px;
      width: 100%;
      background: var(--primary-grad);
      position: sticky;
      top: 0;
      z-index: 1001;
    }

    /* 导航栏 */
    header.site-header {
      position: sticky;
      top: 4px;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-group {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-group img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
      object-fit: contain;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 20px;
      background: rgba(255, 94, 126, 0.1);
      color: var(--rainbow-accent);
      font-weight: 600;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: color 0.2s ease, background-color 0.2s ease;
      display: block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--rainbow-accent);
      background: rgba(255, 94, 126, 0.06);
    }

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

    .btn-header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 18px;
      border-radius: 24px;
      background: linear-gradient(135deg, #FF5E7E, #FF9966);
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
      text-decoration: none;
      box-shadow: 0 4px 14px rgba(255, 94, 126, 0.3);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .btn-header-cta:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(255, 94, 126, 0.4);
      color: #FFFFFF;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 50px;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(244, 246, 251, 0.6) 100%);
    }

    .hero-wrapper {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid #E8EBF2;
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #06D6A0;
      box-shadow: 0 0 0 3px rgba(6, 214, 160, 0.2);
    }

    h1.hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      letter-spacing: -0.8px;
      margin-bottom: 20px;
    }

    .hero-title .highlight-text {
      background: var(--primary-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 32px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 44px;
      flex-wrap: wrap;
    }

    .btn-main-hero {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 34px;
      border-radius: 30px;
      background: linear-gradient(135deg, #FF5E7E 0%, #FF9966 50%, #FFD166 100%);
      color: #1D2330;
      font-size: 16px;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 10px 25px rgba(255, 94, 126, 0.35);
      transition: all 0.25s ease;
      border: 1px solid rgba(255, 255, 255, 0.6);
    }

    .btn-main-hero:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(255, 94, 126, 0.45);
    }

    .btn-sub-hero {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 30px;
      background: #FFFFFF;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      text-decoration: none;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .btn-sub-hero:hover {
      background: var(--bg-alt);
      border-color: #D1D7E2;
    }

    /* 首屏数据指标卡片 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }

    .metric-item {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-color);
      padding: 18px 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s;
    }

    .metric-item:hover {
      transform: translateY(-3px);
      border-color: #D0D8E6;
    }

    .metric-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-val span {
      font-size: 14px;
      color: var(--rainbow-accent);
      font-weight: 600;
      margin-left: 2px;
    }

    .metric-lbl {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Section 通用规范 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-wrap.alt-bg {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 740px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: 12px;
      background: rgba(17, 138, 178, 0.1);
      color: var(--rainbow-blue);
      margin-bottom: 12px;
    }

    h2.section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台介绍板块 */
    .platform-intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .intro-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, #FF5E7E, #FFD166, #06D6A0);
      opacity: 0;
      transition: opacity 0.3s;
    }

    .intro-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #D2D9E8;
    }

    .intro-card:hover::before {
      opacity: 1;
    }

    .intro-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      color: var(--rainbow-accent);
    }

    .intro-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .intro-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 支持模型标签墙 */
    .models-cloud {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-top: 36px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .models-cloud-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .badge-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-badge {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .model-badge:hover {
      background: linear-gradient(135deg, rgba(255, 94, 126, 0.1), rgba(17, 138, 178, 0.1));
      border-color: var(--rainbow-accent);
      color: var(--rainbow-accent);
      transform: scale(1.05);
    }

    /* 场景与能力卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 94, 126, 0.4);
    }

    .service-card-top {
      margin-bottom: 16px;
    }

    .service-badge {
      font-size: 11px;
      font-weight: 700;
      color: var(--rainbow-blue);
      background: rgba(17, 138, 178, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .service-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    .service-card-footer {
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      font-size: 12px;
      color: var(--rainbow-accent);
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* 流程步骤 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-step-item {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FF5E7E, #FF9966);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .flow-step-item h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .flow-step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格与卡片 */
    .evaluation-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
    }

    .eval-header-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 24px;
    }

    .eval-score-badge {
      display: flex;
      align-items: center;
      gap: 16px;
      background: linear-gradient(135deg, rgba(255, 94, 126, 0.08), rgba(255, 209, 102, 0.15));
      padding: 12px 24px;
      border-radius: 16px;
      border: 1px solid rgba(255, 94, 126, 0.2);
    }

    .score-stars {
      color: #FFB703;
      font-size: 18px;
    }

    .score-num {
      font-size: 28px;
      font-weight: 900;
      color: #FF5E7E;
    }

    .score-num small {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: normal;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .compare-table th,
    .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background-color: rgba(255, 94, 126, 0.02);
    }

    .tag-yes {
      display: inline-block;
      background: rgba(6, 214, 160, 0.12);
      color: #059669;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
    }

    .tag-no {
      display: inline-block;
      background: rgba(139, 149, 165, 0.12);
      color: #6B7280;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
    }

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

    .case-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      background: var(--bg-alt);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap img.ai-page-image,
    .case-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-info {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-info h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
    }

    .case-tags {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .case-tag {
      font-size: 11px;
      padding: 2px 6px;
      background: var(--bg-alt);
      border-radius: 4px;
      color: var(--text-muted);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FF5E7E, #FFD166);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #FFFFFF;
      font-size: 14px;
    }

    .reviewer-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 需求匹配与表单 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-col h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .contact-info-col p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 24px;
    }

    .contact-channels {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .channel-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
    }

    .channel-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--rainbow-accent);
      font-weight: 700;
      font-size: 13px;
    }

    .qr-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--bg-alt);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .qr-box img {
      width: 80px;
      height: 80px;
      border-radius: 6px;
      object-fit: cover;
      display: block;
    }

    .qr-text h4 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .qr-text p {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    .form-col form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      background: #FFFFFF;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--rainbow-accent);
      box-shadow: 0 0 0 3px rgba(255, 94, 126, 0.1);
    }

    .btn-submit {
      padding: 14px 28px;
      border-radius: 28px;
      background: linear-gradient(135deg, #FF5E7E, #FF9966);
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 700;
      border: none;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(255, 94, 126, 0.3);
      transition: all 0.2s ease;
      margin-top: 6px;
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(255, 94, 126, 0.4);
    }

    /* FAQ 手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-item:hover {
      border-color: #CBD5E1;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 16px;
      color: var(--text-light);
      transition: transform 0.3s;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease;
      padding: 0 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      background: #FAFBFD;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 0 22px 18px;
    }

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

    /* 资讯与百科 */
    .articles-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 24px;
    }

    .articles-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .articles-links-list a {
      color: var(--rainbow-blue);
      text-decoration: none;
      font-size: 13px;
      padding: 6px 12px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      transition: all 0.2s ease;
    }

    .articles-links-list a:hover {
      border-color: var(--rainbow-blue);
      background: rgba(17, 138, 178, 0.08);
    }

    /* 友情链接 */
    .friendly-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      justify-content: center;
      margin-top: 20px;
    }

    .friendly-links-wrap a {
      font-size: 13px;
      color: var(--text-muted);
      text-decoration: none;
      padding: 4px 10px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 4px;
      transition: all 0.2s;
    }

    .friendly-links-wrap a:hover {
      color: var(--rainbow-accent);
      border-color: var(--rainbow-accent);
    }

    /* 页脚 */
    footer.site-footer {
      background-color: #131722;
      color: #8E98AB;
      padding: 60px 0 24px;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-brand p {
      line-height: 1.6;
      font-size: 13px;
      color: #79849B;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul li a {
      color: #79849B;
      text-decoration: none;
      font-size: 13px;
      transition: color 0.2s;
    }

    .footer-col ul li a:hover {
      color: #FFFFFF;
    }

    .footer-bottom {
      border-top: 1px solid #232A3B;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
    }

    .footer-bottom a {
      color: #79849B;
      text-decoration: none;
    }

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

    /* 浮动客服 */
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      text-decoration: none;
      cursor: pointer;
      transition: all 0.2s;
      font-size: 18px;
    }

    .float-btn:hover {
      transform: scale(1.1);
      border-color: var(--rainbow-accent);
      color: var(--rainbow-accent);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-metrics,
      .platform-intro-grid,
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }

      .contact-form-layout {
        grid-template-columns: 1fr;
      }

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

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

      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

      .nav-links.show {
        display: flex;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links li a {
        width: 100%;
        padding: 10px 0;
      }

      h1.hero-title {
        font-size: 28px;
      }

      h2.section-title {
        font-size: 24px;
      }

      .hero-metrics,
      .platform-intro-grid,
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .flow-steps {
        grid-template-columns: 1fr;
      }

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