:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --accent-orange: #ff5722;
      --accent-yellow: #ffb300;
      --accent-cyan: #06b6d4;
      --accent-purple: #7c3aed;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 20px 30px -10px rgba(37, 99, 235, 0.18);
      --transition: all 0.28s ease;
    }

    *, *::before, *::after {
      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-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

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

    /* Header & Navigation */
    .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);
      transition: var(--transition);
    }

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

    .brand-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }

    .brand-title span {
      color: var(--accent-orange);
    }

    /* Nav bar - gap set to 0 as specifically instructed */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      margin: 0;
      padding: 0;
    }

    .nav-item a {
      display: block;
      padding: 10px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-item a:hover {
      color: var(--primary);
      background-color: #eff6ff;
    }

    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent-orange), #ea580c);
      color: #ffffff !important;
      padding: 9px 20px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(255, 87, 34, 0.3);
    }

    .nav-cta-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(255, 87, 34, 0.4);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* Section Typography & Utilities */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      background-color: #fef3c7;
      color: #b45309;
      margin-bottom: 12px;
      border: 1px solid #fde68a;
    }

    .section-badge.blue {
      background-color: #dbeafe;
      color: #1d4ed8;
      border-color: #bfdbfe;
    }

    .section-badge.purple {
      background-color: #ede9fe;
      color: #6d28d9;
      border-color: #ddd6fe;
    }

    .section-heading {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.28;
      margin-bottom: 14px;
    }

    .section-subheading {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Hero Section (Strictly NO Images as instructed) */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, #eff6ff 0%, #ffffff 40%),
                  radial-gradient(circle at 90% 80%, #fff7ed 0%, #f8fafc 40%);
      padding: 90px 0 80px 0;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

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

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #fed7aa;
      padding: 6px 18px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 700;
      color: #c2410c;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.22;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
    }

    .hero-h1 span.highlight {
      background: linear-gradient(120deg, #2563eb, #7c3aed);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 750px;
      margin: 0 auto 36px auto;
      line-height: 1.68;
    }

    .hero-action-group {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 45px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: #ff5722;
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 800;
      padding: 14px 34px;
      border-radius: 12px;
      box-shadow: 0 10px 24px rgba(255, 87, 34, 0.35);
      border: 2px solid #ea580c;
    }

    .btn-hero-primary:hover {
      background: #ea580c;
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(255, 87, 34, 0.45);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-secondary:hover {
      background: #f1f5f9;
      border-color: #cbd5e1;
    }

    /* Hero Metric Chips without images */
    .hero-metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .metric-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 14px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .metric-chip:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #bfdbfe;
    }

    .metric-chip .value {
      font-size: 1.7rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.2;
    }

    .metric-chip .value.orange {
      color: var(--accent-orange);
    }

    .metric-chip .value.purple {
      color: var(--accent-purple);
    }

    .metric-chip .label {
      font-size: 0.86rem;
      color: var(--text-light);
      margin-top: 4px;
      font-weight: 600;
    }

    /* Models Badge Stream */
    .model-tag-stream {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      margin-top: 32px;
      padding: 18px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px dashed #cbd5e1;
    }

    .model-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      background: #f1f5f9;
      color: #334155;
      padding: 5px 12px;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-badge:hover {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
    }

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

    .about-text h3 {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 1rem;
    }

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

    .point-card {
      background: #ffffff;
      border-left: 4px solid var(--accent-orange);
      padding: 12px 16px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      box-shadow: var(--shadow-sm);
      border-top: 1px solid var(--border-color);
      border-right: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .point-card h4 {
      font-size: 0.96rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .point-card p {
      font-size: 0.84rem;
      color: var(--text-light);
      margin-bottom: 0;
    }

    .about-media-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      text-align: center;
    }

    .about-media-box img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      display: block;
      object-fit: cover;
    }

    /* AIGC Services Grid */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #93c5fd;
    }

    .service-badge-cat {
      font-size: 0.76rem;
      font-weight: 800;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 14px;
      background: #e0f2fe;
      color: #0284c7;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

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

    .service-card ul {
      margin-bottom: 20px;
    }

    .service-card li {
      font-size: 0.86rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-card li::before {
      content: "•";
      color: var(--accent-orange);
      font-weight: bold;
    }

    .service-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-top: auto;
    }

    .service-link:hover {
      color: var(--accent-orange);
    }

    /* Workflow & Capabilities */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .workflow-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: left;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .workflow-step {
      font-size: 1.6rem;
      font-weight: 900;
      color: #cbd5e1;
      margin-bottom: 10px;
    }

    .workflow-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .workflow-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* Industry Solutions (Rich Scenarios) */
    .solution-tabs-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: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .scenario-item h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 8px;
    }

    .scenario-tag {
      font-size: 0.72rem;
      font-weight: 700;
      background: #f3f4f6;
      padding: 2px 8px;
      border-radius: 4px;
      color: #4b5563;
    }

    .scenario-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Comparison Table (Strict 9.9/10, Five Star rating required) */
    .comparison-section {
      background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
    }

    .rating-banner {
      background: linear-gradient(135deg, #1e293b, #0f172a);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px 40px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 35px;
      box-shadow: var(--shadow-md);
    }

    .rating-info h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .rating-info p {
      color: #94a3b8;
      font-size: 0.95rem;
    }

    .rating-badge-group {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .rating-score-box {
      text-align: right;
    }

    .rating-score-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: #fbbf24;
      line-height: 1;
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 1.2rem;
      margin-top: 4px;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.94rem;
    }

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

    .comparison-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 800;
    }

    .comparison-table td.brand-col {
      background: #eff6ff;
      color: #1e3a8a;
      font-weight: 700;
    }

    .check-icon {
      color: #16a34a;
      font-weight: 900;
      margin-right: 6px;
    }

    .cross-icon {
      color: #dc2626;
      font-weight: 900;
      margin-right: 6px;
    }

    /* Cases Section */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

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

    .case-img-wrap {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

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

    .case-body {
      padding: 24px;
    }

    .case-tag {
      font-size: 0.78rem;
      font-weight: 800;
      color: var(--primary);
      background: #dbeafe;
      padding: 3px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .case-body h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Token Price Reference */
    .pricing-table-wrap {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .pricing-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.92rem;
    }

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

    .pricing-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-main);
    }

    .tag-cheapest {
      background: #fee2e2;
      color: #b91c1c;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
      margin-left: 6px;
    }

    /* Partner & Agency (加盟代理) */
    .partner-banner {
      background: linear-gradient(135deg, #ffedd5 0%, #fee2e2 50%, #e0e7ff 100%);
      border: 2px solid #fdba74;
      border-radius: var(--radius-lg);
      padding: 40px;
      text-align: center;
    }

    .partner-banner h3 {
      font-size: 1.85rem;
      font-weight: 900;
      color: #9a3412;
      margin-bottom: 12px;
    }

    .partner-banner p {
      font-size: 1.05rem;
      color: #431407;
      max-width: 800px;
      margin: 0 auto 24px auto;
    }

    .partner-perks {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .perk-box {
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid #fed7aa;
      box-shadow: var(--shadow-sm);
    }

    .perk-box h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: #c2410c;
      margin-bottom: 6px;
    }

    .perk-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* Testimonials (6 Real User Reviews) */
    .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-stars {
      color: #f59e0b;
      font-size: 1rem;
      margin-bottom: 12px;
    }

    .review-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent-orange));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .reviewer-info h5 {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .reviewer-info span {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* FAQ Section */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-item:hover {
      border-color: #93c5fd;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafafa;
    }

    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Articles / News & Wiki Section */
    .news-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .articles-block {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .articles-block h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
      border-left: 4px solid var(--primary);
      padding-left: 10px;
    }

    .article-links-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 15px;
    }

    .article-link-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px;
      border-radius: var(--radius-sm);
      background: #f8fafc;
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    .article-link-item:hover {
      background: #eff6ff;
      color: var(--primary);
    }

    .wiki-sidebar {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .wiki-sidebar h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
      border-left: 4px solid var(--accent-orange);
      padding-left: 10px;
    }

    .wiki-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .wiki-tag {
      background: #f1f5f9;
      color: #334155;
      padding: 6px 12px;
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 600;
    }

    /* Demand Matcher & Form Section */
    .matcher-section {
      background: linear-gradient(135deg, #eff6ff 0%, #fdf4ff 100%);
    }

    .matcher-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 36px;
      align-items: flex-start;
    }

    .matcher-info h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .matcher-info p {
      color: var(--text-muted);
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .contact-card-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-top: 20px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      font-size: 0.94rem;
      color: var(--text-muted);
    }

    .contact-item strong {
      color: var(--text-main);
      min-width: 75px;
    }

    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background: #f8fafc;
    }

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

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary), #1d4ed8);
      color: #ffffff;
      border: none;
      padding: 14px;
      border-radius: var(--radius-sm);
      font-size: 1.05rem;
      font-weight: 800;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
      transition: var(--transition);
    }

    .btn-submit:hover {
      background: linear-gradient(135deg, #1d4ed8, #1e40af);
      transform: translateY(-1px);
    }

    /* Promo Banners Showcase */
    .banner-showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

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

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
    }

    /* Footer Styles (Light background, explicitly contrast colored) */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px 0;
      color: var(--text-muted);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: var(--text-muted);
      font-size: 0.9rem;
    }

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

    .qr-container {
      display: flex;
      align-items: center;
      gap: 14px;
      background: #f8fafc;
      padding: 12px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      margin-top: 10px;
    }

    .qr-container img {
      width: 80px;
      height: 80px;
      display: block;
      border-radius: 4px;
      border: 1px solid #cbd5e1;
    }

    .qr-info {
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    .friend-links-area {
      padding: 24px 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-light);
    }

    .friend-links-list a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-light);
    }

    /* Float Service & Back to top */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      cursor: pointer;
      transition: var(--transition);
      font-size: 1.1rem;
    }

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

    .floating-btn.wechat-btn {
      background: #10b981;
      color: #ffffff;
      border-color: #10b981;
    }

    .floating-btn.wechat-btn:hover {
      background: #059669;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .services-grid, .solution-tabs-grid, .reviews-grid, .partner-perks {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid, .hero-metric-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .matcher-grid, .news-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-item {
        width: 100%;
      }
      .nav-item a {
        padding: 12px 10px;
        width: 100%;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
    }

    @media (max-width: 640px) {
      .services-grid, .solution-tabs-grid, .reviews-grid, .hero-metric-grid, .partner-perks, .workflow-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .hero-h1 {
        font-size: 1.8rem;
      }
      .btn-hero-primary, .btn-hero-secondary {
        width: 100%;
        justify-content: center;
      }
      .banner-showcase-grid {
        grid-template-columns: 1fr;
      }
    }