:root {
      --primary-gradient: linear-gradient(135deg, #ff4e50 0%, #f9d423 25%, #00e5ff 50%, #7b2cbf 75%, #ff007f 100%);
      --rainbow-subtle: linear-gradient(135deg, rgba(255,78,80,0.06), rgba(249,212,35,0.06), rgba(0,229,255,0.06), rgba(123,44,191,0.06));
      --rainbow-btn: linear-gradient(90deg, #ff4e50, #ff8008, #10b981, #06b6d4, #6366f1, #ec4899);
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(15,23,42,0.04);
      --shadow-md: 0 10px 30px rgba(15,23,42,0.08);
      --shadow-rainbow: 0 10px 35px rgba(99,102,241,0.18);
      --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", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      width: 100%;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(90deg, #ff4e50, #6366f1, #06b6d4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      text-decoration: none;
      color: var(--text-main);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: #6366f1;
      background: rgba(99, 102, 241, 0.08);
    }

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

    .btn-rainbow-sm {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: var(--rainbow-btn);
      background-size: 200% 100%;
      color: #ffffff;
      text-decoration: none;
      font-weight: 700;
      font-size: 14px;
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
      transition: all 0.3s ease;
    }

    .btn-rainbow-sm:hover {
      background-position: 100% 0;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 首屏 (Hero Section) */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-section::before {
      content: "";
      position: absolute;
      top: -100px;
      left: 50%;
      transform: translateX(-50%);
      width: 800px;
      height: 400px;
      background: radial-gradient(circle, rgba(255,78,80,0.12) 0%, rgba(99,102,241,0.12) 50%, rgba(255,255,255,0) 70%);
      filter: blur(50px);
      pointer-events: none;
    }

    .hero-inner {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.25);
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      color: #4f46e5;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge span.dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 10px #10b981;
    }

    .hero-title {
      font-size: 40px;
      font-weight: 900;
      letter-spacing: -0.5px;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.6;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-hero-main {
      padding: 14px 36px;
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      background: var(--rainbow-btn);
      background-size: 200% 100%;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 8px 25px rgba(236, 72, 153, 0.35);
      transition: all 0.3s ease;
    }

    .btn-hero-main:hover {
      background-position: 100% 0;
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(99, 102, 241, 0.5);
    }

    .btn-hero-outline {
      padding: 14px 32px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 50px;
      text-decoration: none;
      transition: all 0.3s ease;
    }

    .btn-hero-outline:hover {
      border-color: #6366f1;
      color: #6366f1;
      transform: translateY(-2px);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-md);
    }

    .stat-card h3 {
      font-size: 28px;
      font-weight: 800;
      background: linear-gradient(90deg, #ff4e50, #6366f1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-card p {
      font-size: 13px;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 全局 Section 通用样式 */
    .section-padding {
      padding: 70px 0;
    }

    .section-header {
      text-align: center;
      max-width: 750px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(99, 102, 241, 0.1);
      color: #4f46e5;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

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

    /* 关于我们 / 平台介绍 */
    .about-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-content h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-content p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 15px;
    }

    .about-features {
      list-style: none;
      margin-top: 20px;
    }

    .about-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .about-features li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #10b981;
      color: #fff;
      font-size: 12px;
    }

    .about-media-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    /* 模型矩阵与服务能力 */
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-bottom: 40px;
    }

    .model-pill {
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .model-pill:hover {
      border-color: #6366f1;
      color: #6366f1;
      transform: translateY(-2px);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--rainbow-btn);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-rainbow);
    }

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

    .service-icon {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      background: var(--rainbow-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 18px;
    }

    .service-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-light);
    }

    /* 一站式制作场景网格 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: all 0.25s ease;
    }

    .scenario-item:hover {
      border-color: #6366f1;
      box-shadow: var(--shadow-md);
    }

    .scenario-item h5 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .scenario-item h5 span.badge-mini {
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 10px;
      background: rgba(16, 185, 129, 0.1);
      color: #10b981;
      font-weight: 600;
    }

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

    /* 行业方案与图文整合 */
    .solutions-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .solutions-list {
      display: grid;
      gap: 16px;
    }

    .sol-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
    }

    .sol-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .sol-card p {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 标准流程时间线 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--rainbow-btn);
      color: #fff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 16px;
    }

    .step-box h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-info {
      padding: 24px;
    }

    .case-info h4 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 16px;
    }

    .case-metrics {
      display: flex;
      gap: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 12px;
    }

    .metric-item span {
      display: block;
      font-size: 11px;
      color: var(--text-light);
    }

    .metric-item strong {
      font-size: 16px;
      color: #6366f1;
    }

    /* 对比评测 (核心要求) */
    .eval-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 40px;
    }

    .eval-score-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--rainbow-subtle);
      border: 1px solid rgba(99,102,241,0.2);
      border-radius: var(--radius-md);
      padding: 20px 30px;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-stars {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .stars-icon {
      color: #f59e0b;
      font-size: 24px;
      letter-spacing: 2px;
    }

    .eval-score-num {
      font-size: 32px;
      font-weight: 900;
      color: #4f46e5;
    }

    .table-responsive {
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .eval-table td.highlight {
      background: rgba(99, 102, 241, 0.04);
      font-weight: 700;
      color: #4f46e5;
    }

    /* Token 比价 */
    .token-table-wrap {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    /* 常见问题 (FAQ Accordion) */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

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

    .faq-question {
      padding: 18px 20px;
      font-weight: 700;
      font-size: 15px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      background: #ffffff;
    }

    .faq-question::after {
      content: "+";
      font-size: 18px;
      color: #6366f1;
      font-weight: 400;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      padding: 0 20px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 14px 20px;
      border-top: 1px solid var(--border-color);
    }

    /* 用户评论 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      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-muted);
      margin-bottom: 20px;
      font-style: italic;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-btn);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }

    .user-info h5 {
      font-size: 15px;
      font-weight: 700;
    }

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

    /* AI百科 & 行业资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .news-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .news-card p {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 16px;
    }

    .news-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .news-links-list a {
      color: #6366f1;
      text-decoration: none;
      font-size: 13px;
      font-weight: 500;
    }

    .news-links-list a:hover {
      text-decoration: underline;
    }

    /* 加盟代理 */
    .agency-box {
      background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .agency-content h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 16px;
      background: linear-gradient(90deg, #ff4e50, #00e5ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .agency-content p {
      color: #cbd5e1;
      margin-bottom: 24px;
      font-size: 15px;
    }

    .agency-perks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .perk-item {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .perk-item h5 {
      font-size: 15px;
      color: #ffffff;
      margin-bottom: 4px;
    }

    .perk-item p {
      font-size: 12px;
      color: #94a3b8;
      margin: 0;
    }

    /* 联系我们 & 表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 40px;
    }

    .contact-info-side h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
    }

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

    .contact-details {
      display: grid;
      gap: 16px;
      margin-bottom: 24px;
    }

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

    .contact-detail-item strong {
      color: var(--text-muted);
      width: 80px;
    }

    .qr-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .qr-box img {
      width: 90px;
      height: 90px;
      object-fit: cover;
      border-radius: 8px;
    }

    .qr-text h5 {
      font-size: 15px;
      margin-bottom: 4px;
    }

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

    /* 表单组件 */
    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.2s ease;
      background: #ffffff;
      color: var(--text-main);
    }

    .form-control:focus {
      border-color: #6366f1;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      background: var(--rainbow-btn);
      background-size: 200% 100%;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-submit:hover {
      background-position: 100% 0;
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 14px;
      transition: color 0.2s ease;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friendship-links a {
      color: #cbd5e1;
      text-decoration: none;
      font-size: 13px;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
      transition: all 0.2s ease;
    }

    .friendship-links a:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

    /* 悬浮客服与返回顶部 */
    .float-widget {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 6px 20px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: var(--text-main);
      font-weight: 700;
      font-size: 18px;
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      transform: scale(1.1);
      border-color: #6366f1;
      color: #6366f1;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .services-grid, .process-steps, .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .agency-box, .about-card, .contact-wrapper, .solutions-layout {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-stats, .services-grid, .scenarios-grid, .reviews-grid, .news-grid, .case-grid, .faq-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        grid-template-columns: 1fr;
      }
    }