:root {
      --primary: #4338ca;
      --primary-light: #6366f1;
      --accent: #06b6d4;
      --accent-alt: #ec4899;
      --gradient-main: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      --gradient-warm: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
      --gradient-subtle: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(67, 56, 202, 0.12), 0 8px 10px -6px rgba(67, 56, 202, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-xl: 24px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
    }
    body {
      background: #f8fafc;
      background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.06) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(236, 72, 153, 0.03) 0px, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease, transform 0.2s ease;
    }
    a:hover {
      color: var(--accent);
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .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);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text-main);
    }
    .brand-logo img {
      max-height: 38px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      color: var(--text-muted);
      font-weight: 500;
      font-size: 0.92rem;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.05);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      font-size: 0.95rem;
      text-decoration: none;
    }
    .btn-primary {
      background: var(--gradient-main);
      color: #ffffff !important;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
      color: #ffffff;
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--primary) !important;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      border-color: var(--primary-light);
      background: rgba(99, 102, 241, 0.04);
      transform: translateY(-2px);
    }
    .btn-accent {
      background: var(--gradient-warm);
      color: #ffffff !important;
      box-shadow: 0 4px 12px rgba(236, 72, 153, 0.25);
    }
    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(236, 72, 153, 0.35);
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 8px;
      font-size: 1.4rem;
      color: var(--text-main);
    }

    /* Hero Section - Pure Text, Badges, Gradients, Cards (No Image) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(79, 70, 229, 0.08);
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 20px;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      display: inline-block;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .text-gradient {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline;
    }
    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-features-list {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      list-style: none;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
      width: 100%;
    }
    .hero-features-list li {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .hero-features-list svg {
      width: 16px;
      height: 16px;
      color: #10b981;
    }

    /* Hero Right Visual: Dashboard Console (No Images) */
    .hero-console {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 24px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .console-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 20px;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #cbd5e1;
    }
    .console-dots span:nth-child(1) { background: #f87171; }
    .console-dots span:nth-child(2) { background: #fbbf24; }
    .console-dots span:nth-child(3) { background: #34d399; }
    .console-status {
      font-size: 0.8rem;
      font-weight: 600;
      color: #059669;
      background: #ecfdf5;
      padding: 3px 10px;
      border-radius: 20px;
    }
    .console-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }
    .console-card {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 16px;
    }
    .console-card-title {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 6px;
      font-weight: 500;
    }
    .console-card-val {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
    }
    .console-workflow {
      background: #f8fafc;
      border: 1px dashed #cbd5e1;
      border-radius: var(--radius-md);
      padding: 14px;
    }
    .console-workflow-title {
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .workflow-steps {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }
    .wf-node {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-muted);
      text-align: center;
      flex: 1;
    }
    .wf-arrow {
      color: #94a3b8;
      font-size: 0.8rem;
    }

    /* Section Global Headers */
    .section-spacing {
      padding: 64px 0;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 10px;
      background: rgba(99, 102, 241, 0.1);
      padding: 4px 12px;
      border-radius: 20px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.01em;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Model Tags Cloud */
    .models-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 36px 0;
    }
    .models-label {
      text-align: center;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-tag {
      background: #f1f5f9;
      color: var(--text-main);
      font-size: 0.85rem;
      font-weight: 500;
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid #e2e8f0;
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* Standard Cards & Grid */
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(99, 102, 241, 0.4);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-size: 1.3rem;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .card-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Media Visual Showcases */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .media-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .media-thumb {
      width: 100%;
      overflow: hidden;
      background: #e2e8f0;
    }
    .media-thumb img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-thumb img {
      transform: scale(1.03);
    }
    .media-body {
      padding: 20px;
    }
    .media-body h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .media-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Flow Steps */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--gradient-main);
      color: #ffffff;
      border-radius: 50%;
      font-weight: 700;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Comparison Table */
    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .custom-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .custom-table tr:hover {
      background: rgba(99, 102, 241, 0.02);
    }
    .rating-badge {
      background: #fef3c7;
      color: #d97706;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 0.85rem;
      display: inline-block;
    }

    /* Review Cards */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #f59e0b;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .user-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .user-meta h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .user-meta span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ Section */
    .faq-accordion {
      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: all 0.25s ease;
    }
    .faq-question {
      padding: 18px 22px;
      font-weight: 600;
      font-size: 1.02rem;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-chevron {
      transition: transform 0.3s ease;
      font-size: 0.85rem;
      color: #94a3b8;
    }
    .faq-answer {
      padding: 0 22px 18px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
    }
    .faq-item.active {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-item.active .faq-chevron {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* Demand Matching & Contact Form */
    .form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-item-group {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .contact-qr {
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      gap: 16px;
      max-width: 320px;
    }
    .contact-qr img {
      width: 80px;
      height: 80px;
      border-radius: 4px;
      object-fit: cover;
    }
    .form-box {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      font-family: inherit;
      color: var(--text-main);
      background: #f8fafc;
      transition: border-color 0.2s ease, background 0.2s ease;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* Articles Section */
    .article-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }
    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .article-item:hover {
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }
    .article-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .article-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 14px;
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 50px 0 30px;
      margin-top: auto;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-col p {
      font-size: 0.88rem;
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.88rem;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #38bdf8;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links a {
      color: #94a3b8;
      font-size: 0.85rem;
      background: #1e293b;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
    }
    .friend-links a:hover {
      color: #ffffff;
      background: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* Floating Widget */
    .floating-kefu {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 999;
      background: var(--gradient-main);
      color: #ffffff;
      padding: 12px 18px;
      border-radius: 30px;
      box-shadow: var(--shadow-lg);
      font-weight: 600;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: transform 0.25s ease;
      text-decoration: none;
    }
    .floating-kefu:hover {
      transform: scale(1.05);
      color: #ffffff;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .form-layout {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .console-grid {
        grid-template-columns: 1fr;
      }
    }