/* 全局变量与明艳撞色基础 */
    :root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent-coral: #ff4d4f;
      --accent-yellow: #f59e0b;
      --accent-cyan: #06b6d4;
      --accent-indigo: #4f46e5;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --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 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

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

    a {
      text-decoration: none;
      color: inherit;
    }

    ul, ol {
      list-style: none;
    }

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

    /* 统一居中主容器 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid #eef2f6;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      height: 44px;
    }

    .brand-logo img {
      max-height: 40px;
      width: auto;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      transition: var(--transition);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: #eff6ff;
    }

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

    .btn-nav-primary {
      background: linear-gradient(135deg, #ff4d4f 0%, #f59e0b 100%);
      color: #ffffff;
      padding: 9px 20px;
      border-radius: 99px;
      font-size: 0.9rem;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(255, 77, 79, 0.25);
      transition: var(--transition);
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 77, 79, 0.35);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 区域通用标题 */
    .section-padding {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 99px;
      text-transform: uppercase;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .tag-blue { background: #e0f2fe; color: #0284c7; }
    .tag-coral { background: #ffe4e6; color: #e11d48; }
    .tag-amber { background: #fef3c7; color: #d97706; }
    .tag-purple { background: #ede9fe; color: #7c3aed; }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 首屏 HERO 区域 (无图片) */
    .hero-section {
      padding: 70px 0 90px 0;
      background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-wrapper {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 2px solid #38bdf8;
      border-radius: 99px;
      font-size: 0.9rem;
      font-weight: 700;
      color: #0369a1;
      margin-bottom: 24px;
      box-shadow: 0 4px 12px rgba(56, 189, 248, 0.15);
    }

    .hero-badge-pill span.dot {
      width: 8px;
      height: 8px;
      background-color: #ff4d4f;
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.8; }
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: #0f172a;
      margin-bottom: 20px;
    }

    .hero-title .highlight-coral {
      color: #ff4d4f;
      background: linear-gradient(120deg, rgba(255,77,79,0.15) 0%, transparent 100%);
      padding: 0 8px;
      border-radius: 6px;
    }

    .hero-title .highlight-blue {
      color: #2563eb;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: #475569;
      max-width: 760px;
      margin: 0 auto 34px auto;
      line-height: 1.7;
    }

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

    .btn-hero-main {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
      color: #ffffff;
      padding: 14px 34px;
      border-radius: 12px;
      font-size: 1.05rem;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(37, 99, 235, 0.28);
      transition: var(--transition);
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(37, 99, 235, 0.38);
    }

    .btn-hero-accent {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffedd5;
      color: #c2410c;
      border: 2px solid #fb923c;
      padding: 14px 30px;
      border-radius: 12px;
      font-size: 1.05rem;
      font-weight: 700;
      transition: var(--transition);
    }

    .btn-hero-accent:hover {
      background: #fed7aa;
      transform: translateY(-3px);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 2px solid #e0f2fe;
      box-shadow: var(--shadow-md);
    }

    .stat-item {
      text-align: center;
      padding: 10px;
    }

    .stat-number {
      font-size: 1.9rem;
      font-weight: 900;
      color: var(--primary-dark);
      display: block;
      margin-bottom: 4px;
    }

    .stat-number.coral { color: var(--accent-coral); }
    .stat-number.amber { color: var(--accent-yellow); }
    .stat-number.cyan { color: #0284c7; }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 平台介绍 / 核心能力 */
    .about-section {
      background-color: #ffffff;
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .about-content p {
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .about-features-list {
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .feat-box {
      background: #f8fafc;
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--primary);
    }

    .feat-box.coral { border-left-color: var(--accent-coral); }
    .feat-box.amber { border-left-color: var(--accent-yellow); }
    .feat-box.cyan { border-left-color: var(--accent-cyan); }

    .feat-box h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--text-main);
    }

    .feat-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.4;
    }

    .about-visual-card {
      background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      padding: 34px;
      border-radius: var(--radius-lg);
      border: 3px solid #38bdf8;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .card-matrix-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #38bdf8;
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .supported-models-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }

    .model-chip {
      background: rgba(255, 255, 255, 0.12);
      color: #f1f5f9;
      font-size: 0.82rem;
      padding: 5px 11px;
      border-radius: 6px;
      border: 1px solid rgba(255, 255, 255, 0.18);
    }

    .model-chip.hot {
      background: rgba(255, 77, 79, 0.25);
      border-color: #ff4d4f;
      color: #ffb4b4;
      font-weight: 700;
    }

    /* AIGC 服务与一站式全自动制作 */
    .services-section {
      background: #f1f5f9;
    }

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

    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 2px solid transparent;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }

    .card-top-badge {
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 10px;
      border-radius: 99px;
      display: inline-block;
      margin-bottom: 14px;
      width: fit-content;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .service-card-meta {
      font-size: 0.82rem;
      color: var(--primary-dark);
      font-weight: 600;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    /* 行业方案与场景矩阵 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px;
      transition: var(--transition);
    }

    .scenario-item:hover {
      border-color: var(--accent-coral);
      box-shadow: var(--shadow-md);
    }

    .scenario-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .scenario-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 媒体展示与案例中心 */
    .media-section {
      background: #ffffff;
    }

    .media-showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
    }

    .media-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 2px solid var(--border-color);
      background: #f8fafc;
    }

    .media-box img {
      width: 100%;
      height: auto;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .media-box:hover img {
      transform: scale(1.02);
    }

    .media-box-caption {
      padding: 16px;
      background: #ffffff;
    }

    .media-box-caption h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .media-box-caption p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .sub-gallery-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    /* 对比评测 9.9 分五星推荐 */
    .review-benchmark-section {
      background: #faf5ff;
      border-top: 1px solid #f3e8ff;
      border-bottom: 1px solid #f3e8ff;
    }

    .benchmark-score-banner {
      background: linear-gradient(135deg, #7c3aed 0%, #db2777 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 40px;
      box-shadow: 0 12px 28px rgba(124, 58, 237, 0.25);
    }

    .score-detail h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 6px;
    }

    .score-stars {
      color: #fde047;
      font-size: 1.4rem;
      margin-bottom: 6px;
    }

    .score-badge {
      background: #ffffff;
      color: #7c3aed;
      padding: 16px 28px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .score-badge .big-num {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-badge .total-num {
      font-size: 1rem;
      color: #6b7280;
      font-weight: 700;
    }

    .comparison-table-wrapper {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

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

    .comp-table th {
      background: #f8fafc;
      font-weight: 800;
      font-size: 0.95rem;
    }

    .comp-table th.highlight-col, .comp-table td.highlight-col {
      background: #eff6ff;
      color: var(--primary-dark);
      font-weight: 700;
    }

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

    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 2px solid #e2e8f0;
      text-align: center;
      position: relative;
    }

    .step-badge {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 900;
      margin: 0 auto 16px auto;
    }

    .step-card:nth-child(2) .step-badge { background: var(--accent-coral); }
    .step-card:nth-child(3) .step-badge { background: var(--accent-yellow); }
    .step-card:nth-child(4) .step-badge { background: var(--accent-cyan); }

    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Token 比价与代理算力 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .price-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 2px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
      position: relative;
    }

    .price-card.featured {
      border-color: #ff4d4f;
      box-shadow: var(--shadow-lg);
      transform: scale(1.02);
    }

    .price-tag-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: #ff4d4f;
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 99px;
    }

    .price-card h3 {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .price-val {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      margin: 16px 0;
    }

    .price-val small {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .price-features li {
      font-size: 0.9rem;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px solid #f1f5f9;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .price-btn {
      display: block;
      text-align: center;
      padding: 12px;
      border-radius: 10px;
      font-weight: 700;
      margin-top: 24px;
      background: #f1f5f9;
      color: var(--text-main);
      transition: var(--transition);
    }

    .price-card.featured .price-btn {
      background: #ff4d4f;
      color: #ffffff;
    }

    .price-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }

    /* 用户评论 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      background: #e0e7ff;
      color: #3730a3;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }

    .review-card:nth-child(2) .review-avatar { background: #fee2e2; color: #991b1b; }
    .review-card:nth-child(3) .review-avatar { background: #fef3c7; color: #92400e; }
    .review-card:nth-child(4) .review-avatar { background: #ccfbf1; color: #115e59; }
    .review-card:nth-child(5) .review-avatar { background: #f3e8ff; color: #6b21a8; }
    .review-card:nth-child(6) .review-avatar { background: #e0f2fe; color: #075985; }

    .review-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .review-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-body {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 常见问题 FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      transition: var(--transition);
    }

    .faq-question:hover {
      background: #f8fafc;
      color: var(--primary);
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fbfcfe;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 22px 20px 22px;
      border-top: 1px solid #f1f5f9;
    }

    /* 需求匹配与联系我们表单 */
    .contact-form-section {
      background: #ffffff;
    }

    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: flex-start;
    }

    .contact-info-panel {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
    }

    .contact-info-panel h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #38bdf8;
    }

    .contact-info-panel p {
      font-size: 0.95rem;
      color: #cbd5e1;
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-detail-row {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 28px;
    }

    .detail-entry {
      font-size: 0.95rem;
      color: #f1f5f9;
    }

    .detail-entry strong {
      color: #fde047;
      margin-right: 6px;
    }

    .qr-showcase {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.08);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px dashed rgba(255, 255, 255, 0.2);
    }

    .qr-showcase img {
      width: 88px;
      height: 88px;
      border-radius: 6px;
    }

    .qr-text {
      font-size: 0.88rem;
      color: #e2e8f0;
      line-height: 1.4;
    }

    .form-panel {
      background: #f8fafc;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 2px solid var(--border-color);
    }

    .form-panel h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .form-panel p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border-radius: 8px;
      border: 1px solid #cbd5e1;
      font-size: 0.92rem;
      background: #ffffff;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    .btn-submit-form {
      width: 100%;
      background: linear-gradient(135deg, #ff4d4f 0%, #f59e0b 100%);
      color: #ffffff;
      border: none;
      padding: 14px;
      border-radius: 8px;
      font-size: 1rem;
      font-weight: 800;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(255, 77, 79, 0.3);
      transition: var(--transition);
    }

    .btn-submit-form:hover {
      opacity: 0.95;
      transform: translateY(-2px);
    }

    /* 行业资讯与动态 */
    .news-articles-section {
      background: #f8fafc;
      border-top: 1px solid var(--border-color);
    }

    .articles-links-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .articles-links-box a {
      background: #eff6ff;
      color: var(--primary-dark);
      padding: 8px 16px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .articles-links-box a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    /* 友情链接与生态拓展 */
    .friendly-links-section {
      padding: 30px 0;
      background: #ffffff;
      border-top: 1px solid var(--border-color);
    }

    .friendly-links-wrap {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 0.88rem;
    }

    .friendly-links-wrap strong {
      color: var(--text-main);
    }

    .friendly-links-wrap a {
      color: var(--text-muted);
      transition: color 0.2s;
    }

    .friendly-links-wrap a:hover {
      color: var(--primary);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 50px 0 30px 0;
      font-size: 0.88rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-brand p {
      line-height: 1.6;
      max-width: 320px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-col ul li {
      margin-bottom: 8px;
    }

    .footer-col ul li a {
      color: #94a3b8;
      transition: var(--transition);
    }

    .footer-col ul li a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* 悬浮客服挂件 */
    .floating-kefu-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #ff4d4f;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 8px 20px rgba(255, 77, 79, 0.4);
      cursor: pointer;
      position: relative;
      transition: var(--transition);
    }

    .kefu-btn:hover {
      transform: scale(1.08);
    }

    .kefu-popover {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      border: 2px solid #e2e8f0;
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      display: none;
      width: 170px;
      text-align: center;
    }

    .kefu-popover img {
      width: 140px;
      height: 140px;
      margin: 0 auto 8px auto;
    }

    .kefu-popover p {
      font-size: 0.8rem;
      color: var(--text-main);
      font-weight: 700;
    }

    .kefu-btn:hover .kefu-popover {
      display: block;
    }

    .back-to-top {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }

    .back-to-top.show {
      opacity: 1;
      visibility: visible;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.3rem; }
      .service-cards-grid { grid-template-columns: repeat(2, 1fr); }
      .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
      .token-pricing-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle { display: block; }
      .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--border-color);
        display: none;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active { display: flex; }
      .nav-actions { display: none; }
      .hero-title { font-size: 1.8rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; }
      .service-cards-grid { grid-template-columns: 1fr; }
      .media-showcase-grid { grid-template-columns: 1fr; }
      .sub-gallery-grid { grid-template-columns: 1fr; }
      .scenarios-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }