:root {
      --primary: #2563eb;
      --primary-gradient: linear-gradient(135deg, #0052ff 0%, #7928ca 50%, #ff0080 100%);
      --accent-coral: #ff4757;
      --accent-amber: #ff9f43;
      --accent-emerald: #10b981;
      --accent-cyan: #06b6d4;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-highlight: #cbd5e1;
      --shadow-sm: 0 2px 8px rgba(0, 82, 255, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(121, 40, 202, 0.08), 0 8px 10px -6px rgba(0, 82, 255, 0.04);
      --shadow-lg: 0 20px 35px -10px rgba(255, 0, 128, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 15px rgba(0,0,0,0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap .ai-page-logo {
      height: 38px;
      width: auto;
    }
    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: 6px;
      display: inline-block;
      white-space: nowrap;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: #0052ff;
      background: rgba(0, 82, 255, 0.05);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      border: none;
      text-align: center;
    }
    .btn-gradient {
      background: var(--primary-gradient);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(121, 40, 202, 0.3);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(255, 0, 128, 0.4);
    }
    .btn-outline {
      background: #ffffff;
      color: #0052ff !important;
      border: 1.5px solid #0052ff;
    }
    .btn-outline:hover {
      background: rgba(0, 82, 255, 0.04);
      transform: translateY(-2px);
    }
    .btn-warm {
      background: linear-gradient(135deg, #ff5e00, #ff0080);
      color: #ffffff !important;
    }
    .btn-warm:hover {
      box-shadow: 0 6px 20px rgba(255, 94, 0, 0.35);
      transform: translateY(-2px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 通用版块样式 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      border-radius: 30px;
      background: rgba(0, 82, 255, 0.08);
      color: #0052ff;
      margin-bottom: 12px;
      border: 1px solid rgba(0, 82, 255, 0.2);
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      line-height: 1.3;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 12px auto 0 auto;
    }

    /* 首屏 HERO (无图片设计) */
    .hero-section {
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 15% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 85% 60%, rgba(255, 0, 128, 0.08) 0%, transparent 45%),
                  linear-gradient(180deg, #ffffff 0%, #f8faff 100%);
      border-bottom: 1px solid rgba(0, 82, 255, 0.08);
    }
    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #dbeafe;
      border-radius: 50px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #1d4ed8;
    }
    .hero-badge-pulse {
      width: 10px;
      height: 10px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
    }
    .hero-title {
      font-size: 2.6rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-highlight {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 800px;
      margin: 0 auto 36px auto;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-cta-group .btn {
      padding: 14px 34px;
      font-size: 1.05rem;
      border-radius: 50px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #93c5fd;
    }
    .stat-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: #0052ff;
      line-height: 1;
      margin-bottom: 8px;
    }
    .stat-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 平台介绍板块 */
    .about-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 45px;
      box-shadow: var(--shadow-md);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 18px;
      line-height: 1.35;
    }
    .about-text p {
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.8;
      font-size: 1rem;
    }
    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }
    .about-tag-item {
      background: #f1f5f9;
      color: var(--text-main);
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      border: 1px solid #e2e8f0;
    }
    .about-features-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .feature-item-card {
      background: #f8fafc;
      padding: 20px;
      border-radius: var(--radius-md);
      border-left: 4px solid #0052ff;
    }
    .feature-item-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .feature-item-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 模型矩阵徽章 */
    .models-cloud {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-top: 30px;
    }
    .models-cloud-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
      text-align: center;
    }
    .badge-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .model-badge {
      background: linear-gradient(135deg, #ffffff, #f1f5f9);
      border: 1px solid #cbd5e1;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 700;
      color: #1e293b;
      transition: all 0.2s;
    }
    .model-badge:hover {
      background: #0052ff;
      color: #ffffff;
      border-color: #0052ff;
      transform: translateY(-2px);
    }

    /* 一站式创作特色能力卡片 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .creative-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .creative-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #ff0080;
    }
    .creative-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 82, 255, 0.1), rgba(255, 0, 128, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: #0052ff;
      font-size: 1.4rem;
      font-weight: 900;
    }
    .creative-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .creative-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .creative-meta {
      margin-top: 20px;
      padding-top: 15px;
      border-top: 1px dashed var(--border-color);
      font-size: 0.85rem;
      font-weight: 700;
      color: #7928ca;
    }

    /* 行业方案九宫格 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .solution-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
    }
    .solution-card:hover {
      border-color: #0052ff;
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .solution-title {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .solution-pill {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      background: #e0e7ff;
      color: #3730a3;
      font-weight: 600;
    }
    .solution-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 对比评测卡片与表格 */
    .rating-banner {
      background: linear-gradient(135deg, #0f172a, #1e1b4b);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      margin-bottom: 35px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 25px;
      box-shadow: var(--shadow-lg);
    }
    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-circle {
      width: 90px;
      height: 90px;
      border-radius: 50%;
      background: var(--primary-gradient);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }
    .score-circle .score-num {
      font-size: 1.9rem;
      line-height: 1;
    }
    .score-circle .score-total {
      font-size: 0.75rem;
      opacity: 0.85;
    }
    .rating-text h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .rating-stars {
      color: #fbbf24;
      font-size: 1.3rem;
      letter-spacing: 3px;
      margin-bottom: 6px;
    }
    .compare-table-wrap {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:hover td {
      background: rgba(0, 82, 255, 0.02);
    }
    .highlight-col {
      background: rgba(0, 82, 255, 0.04);
      font-weight: 700;
      color: #0052ff;
    }

    /* 案例中心 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 25px;
      margin-bottom: 30px;
    }
    .case-gallery-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .case-gallery-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-img-container {
      aspect-ratio: 16 / 9;
      width: 100%;
      overflow: hidden;
      background: #e2e8f0;
    }
    .case-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-gallery-item:hover .case-img-container img {
      transform: scale(1.03);
    }
    .case-info {
      padding: 22px;
    }
    .case-info h4 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .case-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .banners-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 25px;
    }
    .banner-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }
    .banner-box .ai-page-image {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }

    /* 标准流程时间线 */
    .process-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step-card {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .step-badge {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 900;
      margin: 0 auto 16px auto;
    }
    .process-step-card h4 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .process-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Token比价与算力收益 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .pricing-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 35px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      transition: all 0.3s ease;
    }
    .pricing-card.featured {
      border: 2px solid #7928ca;
      box-shadow: var(--shadow-md);
      transform: scale(1.03);
    }
    .pricing-featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 20px;
      letter-spacing: 0.5px;
    }
    .pricing-name {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .pricing-price {
      font-size: 2.3rem;
      font-weight: 900;
      color: #0052ff;
      margin: 15px 0;
      line-height: 1;
    }
    .pricing-price small {
      font-size: 0.9rem;
      color: var(--text-light);
      font-weight: 500;
    }
    .pricing-features {
      list-style: none;
      margin: 20px 0 30px 0;
    }
    .pricing-features li {
      font-size: 0.92rem;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 需求匹配与在线表单 */
    .form-container-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 45px;
      box-shadow: var(--shadow-md);
      max-width: 860px;
      margin: 0 auto;
    }
    .form-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 18px;
    }
    .form-label {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #f8fafc;
      transition: border-color 0.2s ease;
      font-family: inherit;
    }
    .form-control:focus {
      outline: none;
      border-color: #0052ff;
      background: #ffffff;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 用户真实评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .review-card {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 15px;
      border-top: 1px solid var(--border-color);
    }
    .reviewer-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #0052ff, #ff0080);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .reviewer-role {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item:hover {
      border-color: #93c5fd;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 1.2rem;
      color: #0052ff;
      font-weight: 800;
      transition: transform 0.3s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #f8fafc;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-color);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* 行业资讯与AI百科 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .article-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-title {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 12px;
      line-height: 1.4;
      color: var(--text-main);
    }
    .article-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .article-link-btn {
      font-size: 0.88rem;
      font-weight: 700;
      color: #0052ff;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }
    .article-link-btn:hover {
      text-decoration: underline;
    }

    /* 联系我们 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }
    .contact-info-card {
      background: #ffffff;
      padding: 35px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }
    .contact-item-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: #eff6ff;
      color: #0052ff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 800;
    }
    .contact-label {
      font-size: 0.82rem;
      color: var(--text-light);
    }
    .contact-value {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .qr-card {
      background: #ffffff;
      padding: 35px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .qr-box {
      width: 170px;
      height: 170px;
      margin: 0 auto 18px auto;
      padding: 8px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #ffffff;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 35px 0;
      color: var(--text-muted);
    }
    .footer-links-group {
      margin-bottom: 30px;
      padding-bottom: 25px;
      border-bottom: 1px solid var(--border-color);
    }
    .footer-links-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px 24px;
    }
    .friend-links-wrap a {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .friend-links-wrap a:hover {
      color: #0052ff;
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
    }

    /* 悬浮客服与返回顶部 */
    .float-panel {
      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: 0 4px 15px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #0052ff;
      font-weight: 800;
      font-size: 1.1rem;
      transition: all 0.25s ease;
    }
    .float-btn:hover {
      background: #0052ff;
      color: #ffffff;
      transform: translateY(-3px);
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.1rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .case-gallery-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .cards-grid-3,
      .solutions-grid,
      .pricing-grid,
      .reviews-grid,
      .articles-grid,
      .banners-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 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 14px;
      }
    }

    @media (max-width: 640px) {
      section {
        padding: 60px 0;
      }
      .hero-title {
        font-size: 1.75rem;
      }
      .hero-stats-grid,
      .cards-grid-3,
      .solutions-grid,
      .pricing-grid,
      .reviews-grid,
      .articles-grid,
      .banners-strip,
      .form-grid-2,
      .process-steps-grid {
        grid-template-columns: 1fr;
      }
      .about-features-list {
        grid-template-columns: 1fr;
      }
      .about-box,
      .form-container-box {
        padding: 24px;
      }
      .pricing-card.featured {
        transform: none;
      }
    }