:root {
      --primary: #f59e0b;
      --primary-hover: #d97706;
      --primary-light: #fef3c7;
      --accent: #fbbf24;
      --accent-glow: rgba(245, 158, 11, 0.25);
      --bg-main: #faf9f6;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #f1f5f9;
      --border-highlight: #fde68a;
      --shadow-sm: 0 2px 8px rgba(245, 158, 11, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(245, 158, 11, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    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-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* Header & Navigation */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--border-highlight);
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    }

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

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

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

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

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

    .nav-links li a {
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover {
      color: var(--primary-hover);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      margin-left: 15px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s ease;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
      color: #78350f;
      box-shadow: 0 4px 14px var(--accent-glow);
      font-weight: 700;
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
    }

    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: #b45309;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: #78350f;
    }

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

    /* Hero Section (No Images as required) */
    .hero-section {
      position: relative;
      padding: 80px 0 60px;
      background: radial-gradient(circle at 50% 0%, #fffbeb 0%, #faf9f6 75%);
      text-align: center;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: var(--primary-light);
      border: 1px solid var(--border-highlight);
      color: #b45309;
      font-size: 13px;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 30px;
      margin-bottom: 24px;
      animation: pulse 2.5s infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.03); }
    }

    .hero-title {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      color: #1e293b;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: #d97706;
      background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 36px;
    }

    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-cta .btn {
      padding: 14px 32px;
      font-size: 16px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-highlight);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-md);
      max-width: 980px;
      margin: 0 auto;
    }

    .stat-item {
      text-align: center;
      border-right: 1px dashed var(--border-highlight);
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: #d97706;
      line-height: 1.2;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 6px;
      font-weight: 500;
    }

    /* Section Base */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      color: #b45309;
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 20px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

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

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-highlight);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      color: #b45309;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      font-weight: bold;
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-tags {
      margin-top: 14px;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .tag-item {
      font-size: 11px;
      padding: 2px 8px;
      background: #f8fafc;
      color: #64748b;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

    /* Media Visual Section */
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-highlight);
    }

    .media-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .media-content {
      padding: 20px;
    }

    /* Model Cloud */
    .model-cloud-wrapper {
      background: #fff;
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-highlight);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 20px;
    }

    .model-pill {
      background: #fffbeb;
      border: 1px solid #fde68a;
      color: #92400e;
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      transition: all 0.2s;
    }

    .model-pill:hover {
      background: #f59e0b;
      color: #fff;
      border-color: #f59e0b;
    }

    /* Comparison Table */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    table.custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-bottom: 1px solid #f1f5f9;
    }

    .custom-table th {
      background: #fffbeb;
      color: #78350f;
      font-weight: 700;
    }

    .custom-table tr:last-child td {
      border-bottom: none;
    }

    .highlight-col {
      background: #fffdf5;
      font-weight: 600;
      color: #b45309;
    }

    .score-badge {
      display: inline-flex;
      align-items: center;
      background: #f59e0b;
      color: white;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 800;
    }

    /* Process Workflow */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .process-step {
      font-size: 28px;
      font-weight: 900;
      color: #fde68a;
      line-height: 1;
      margin-bottom: 12px;
    }

    /* Testimonials */
    .testimonial-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }

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

    .user-avatar-circle {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #fef3c7;
      color: #b45309;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 15px;
    }

    .user-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
    }

    .user-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #fff;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: #fffbeb;
    }

    .faq-icon {
      font-size: 18px;
      color: #b45309;
      transition: transform 0.3s;
    }

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

    .faq-answer {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease;
      color: #475569;
      font-size: 14px;
      line-height: 1.7;
      background: #fff;
    }

    .faq-item.active .faq-answer {
      padding: 0 24px 20px 24px;
      max-height: 250px;
    }

    /* Contact & Form Section */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-highlight);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-detail-list {
      list-style: none;
      margin: 20px 0;
    }

    .contact-detail-list li {
      margin-bottom: 14px;
      font-size: 14px;
      color: #334155;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .qr-box {
      margin-top: 15px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-box img {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      border: 2px solid var(--border-highlight);
    }

    .custom-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.2s;
      background: #fafafa;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
    }

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

    /* Articles / Knowledge Section */
    .article-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }

    .article-chip {
      background: #fff;
      border: 1px solid #e2e8f0;
      padding: 10px 18px;
      border-radius: var(--radius-md);
      font-size: 13px;
      color: #334155;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: var(--shadow-sm);
    }

    .article-chip:hover {
      border-color: var(--primary);
      color: #b45309;
      transform: translateY(-2px);
    }

    /* Footer */
    footer.site-footer {
      background: #ffffff;
      border-top: 2px solid var(--border-highlight);
      padding: 50px 0 30px;
      color: #475569;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
    }

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

    .footer-links a {
      font-size: 13px;
      color: #64748b;
    }

    .footer-links a:hover {
      color: #b45309;
    }

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

    .footer-friend-links a {
      font-size: 12px;
      color: #64748b;
      background: #f8fafc;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

    .footer-friend-links a:hover {
      color: #b45309;
      border-color: #fde68a;
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #94a3b8;
    }

    /* Floating Customer Service */
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      background: #f59e0b;
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
      cursor: pointer;
      font-size: 20px;
      transition: all 0.3s;
      position: relative;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: #d97706;
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #fff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-highlight);
      display: none;
      width: 140px;
      text-align: center;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      display: block;
    }

    .float-qr-pop span {
      font-size: 11px;
      color: #78350f;
      font-weight: 600;
      margin-top: 6px;
      display: block;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-3, .grid-4, .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-container {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-item:nth-child(2) {
        border-right: none;
      }
      .stat-item:nth-child(1), .stat-item:nth-child(2) {
        border-bottom: 1px dashed var(--border-highlight);
        padding-bottom: 15px;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 2px solid var(--border-highlight);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
      }
      .nav-actions {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
        justify-content: center;
      }
      .hero-title {
        font-size: 26px;
      }
      .grid-2, .grid-3, .grid-4, .process-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: 1fr;
      }
      .stat-item {
        border-right: none !important;
        border-bottom: 1px dashed var(--border-highlight);
        padding-bottom: 12px;
      }
      .stat-item:last-child {
        border-bottom: none;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }