/* CSS Variables & Light Orange Theme */
    :root {
      --primary: #FF6B00;
      --primary-hover: #E05300;
      --primary-light: #FFF0E5;
      --secondary: #22252A;
      --accent: #FF3D00;
      --bg-base: #FAF9F6;
      --bg-card: #FFFFFF;
      --text-main: #2D2F33;
      --text-muted: #62666E;
      --border-color: #EAEBED;
      --container-width: 1200px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
    }

    /* Common Layout */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-title h2 {
      font-size: 2.2rem;
      color: var(--secondary);
      font-weight: 700;
      position: relative;
      display: inline-block;
      padding-bottom: 12px;
    }

    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
    }

    .section-title p {
      color: var(--text-muted);
      margin-top: 12px;
      font-size: 1.1rem;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 8px;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #FFFFFF;
      box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
    }

    .btn-outline {
      background: transparent;
      color: var(--secondary);
      border: 2px solid var(--secondary);
    }

    .btn-outline:hover {
      background: var(--secondary);
      color: #FFFFFF;
      transform: translateY(-2px);
    }

    /* Header & Navigation */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

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

    .logo-area span {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--secondary);
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    nav {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .nav-links {
      display: flex;
      gap: 20px;
      list-style: none;
    }

    .nav-links a {
      color: var(--text-main);
      text-decoration: none;
      font-weight: 500;
      transition: var(--transition);
      font-size: 0.95rem;
    }

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

    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      gap: 6px;
      background: none;
      border: none;
      cursor: pointer;
    }

    .mobile-menu-btn span {
      display: block;
      width: 25px;
      height: 3px;
      background-color: var(--secondary);
      transition: var(--transition);
    }

    /* Hero Section (No Image, CSS Pure Styling) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #FFF5EE 0%, var(--bg-base) 100%);
      padding: 100px 0 80px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -10%;
      left: -10%;
      width: 40%;
      height: 40%;
      background: radial-gradient(circle, rgba(255,107,0,0.08) 0%, rgba(255,255,255,0) 70%);
      pointer-events: none;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px dashed rgba(255, 107, 0, 0.4);
    }

    .hero-content h1 {
      font-size: 3rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--secondary);
      margin-bottom: 24px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-content p {
      font-size: 1.25rem;
      color: var(--text-muted);
      margin-bottom: 40px;
      line-height: 1.8;
    }

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

    /* Hero Stats Card */
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .stat-card {
      background-color: var(--bg-card);
      padding: 24px;
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
    }

    .stat-card .num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }

    .stat-card .label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* About Section */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.8rem;
      margin-bottom: 20px;
      color: var(--secondary);
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1.05rem;
      line-height: 1.8;
    }

    .about-bullets {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .about-bullets li {
      position: relative;
      padding-left: 24px;
      color: var(--text-main);
      font-weight: 500;
    }

    .about-bullets li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: bold;
    }

    .about-card {
      background: linear-gradient(135deg, var(--secondary), #2D2F33);
      color: #FFFFFF;
      padding: 40px;
      border-radius: 16px;
      position: relative;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    }

    .about-card h4 {
      font-size: 1.4rem;
      margin-bottom: 16px;
      color: var(--primary);
    }

    .about-card p {
      font-size: 0.95rem;
      color: #CCCCCC;
      line-height: 1.7;
    }

    /* AIGC Model Cloud */
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 30px;
    }

    .model-tag {
      background-color: var(--bg-card);
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 500;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      cursor: default;
    }

    .model-tag:hover {
      background-color: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
      transform: scale(1.05);
    }

    /* Grid layout generic cards */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

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

    /* Capacity & Solution Cards */
    .service-card {
      background-color: var(--bg-card);
      padding: 32px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 30px rgba(255,107,0,0.08);
      border-color: var(--primary-light);
    }

    .card-icon {
      width: 50px;
      height: 50px;
      background-color: var(--primary-light);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .service-card h3 {
      font-size: 1.3rem;
      margin-bottom: 12px;
      color: var(--secondary);
    }

    .service-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    /* Step Timeline */
    .step-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-item {
      background-color: var(--bg-card);
      padding: 30px 24px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      position: relative;
      text-align: center;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background-color: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .step-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Comparison Table */
    .table-responsive {
      overflow-x: auto;
      background-color: var(--bg-card);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    }

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

    th, td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    th {
      background-color: #FDFDFD;
      font-weight: 600;
      color: var(--secondary);
    }

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

    .highlight-row {
      background-color: rgba(255, 107, 0, 0.02);
    }

    .highlight-cell {
      color: var(--primary);
      font-weight: 700;
    }

    .rating {
      font-size: 1.1rem;
      color: #FFA800;
      font-weight: bold;
    }

    /* Portfolio Section (Image containers) */
    .portfolio-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .portfolio-item {
      background-color: var(--bg-card);
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .portfolio-item:hover {
      transform: translateY(-6px);
      box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    }

    .portfolio-img-container {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background-color: #EEE;
      position: relative;
    }

    .portfolio-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .portfolio-item:hover .portfolio-img-container img {
      transform: scale(1.05);
    }

    .portfolio-info {
      padding: 20px;
    }

    .portfolio-info h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: var(--secondary);
    }

    .portfolio-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Training Area */
    .training-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 30px;
      position: relative;
      transition: var(--transition);
    }

    .training-card:hover {
      border-color: var(--primary);
      box-shadow: 0 6px 20px rgba(255,107,0,0.05);
    }

    .training-card h4 {
      font-size: 1.2rem;
      color: var(--secondary);
      margin-bottom: 12px;
      border-left: 4px solid var(--primary);
      padding-left: 10px;
    }

    .training-badge {
      position: absolute;
      top: 20px;
      right: 20px;
      background-color: #E6F7FF;
      color: #1890FF;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 500;
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      font-weight: 600;
      color: var(--secondary);
    }

    .faq-icon {
      transition: transform 0.3s;
      color: var(--primary);
    }

    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-muted);
      font-size: 0.95rem;
      border-top: 0 solid var(--border-color);
    }

    .faq-item.active .faq-body {
      padding: 18px 24px;
      max-height: 500px;
      border-top: 1px solid var(--border-color);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* Testimonials */
    .comment-card {
      background-color: var(--bg-card);
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      position: relative;
    }

    .comment-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .avatar-placeholder {
      width: 48px;
      height: 48px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.1rem;
    }

    .user-info h5 {
      font-size: 0.95rem;
      color: var(--secondary);
    }

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

    .comment-text {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
    }

    /* Form & Agent Contact Grid */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
    }

    .form-wrapper {
      background-color: var(--bg-card);
      padding: 40px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0,0,0,0.01);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--secondary);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      background-color: var(--bg-base);
      color: var(--text-main);
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFFFFF;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }

    .contact-info-panel {
      background: linear-gradient(135deg, var(--secondary), #2A2D34);
      color: #FFFFFF;
      padding: 40px;
      border-radius: 16px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-methods {
      list-style: none;
      margin-bottom: 30px;
    }

    .contact-methods li {
      margin-bottom: 20px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
    }

    .contact-methods li strong {
      color: var(--primary);
    }

    .contact-methods a {
      color: #FFFFFF;
      text-decoration: underline;
    }

    .qr-box {
      text-align: center;
      background-color: rgba(255,255,255,0.05);
      padding: 20px;
      border-radius: 12px;
      margin-top: 20px;
    }

    .qr-box img {
      width: 120px;
      height: 120px;
      margin-bottom: 10px;
      border-radius: 4px;
    }

    .qr-box p {
      font-size: 0.85rem;
      color: #CCC;
    }

    /* Knowledge base */
    .knowledge-list {
      list-style: none;
    }

    .knowledge-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .knowledge-item a {
      color: var(--text-main);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: var(--transition);
    }

    .knowledge-item a:hover {
      color: var(--primary);
    }

    .knowledge-date {
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    /* Footer */
    footer {
      background-color: var(--secondary);
      color: #FFFFFF;
      padding: 60px 0 30px 0;
      font-size: 0.9rem;
    }

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

    .footer-logo span {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }

    .footer-desc {
      color: #AAAAAA;
      margin-top: 15px;
      line-height: 1.7;
    }

    .footer-links-title {
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-links-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 30px;
      height: 2px;
      background-color: var(--primary);
    }

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

    .footer-links li {
      margin-bottom: 12px;
    }

    .footer-links a {
      color: #CCCCCC;
      text-decoration: none;
      transition: var(--transition);
    }

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

    .friendship-links {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,0.1);
    }

    .friendship-links p {
      font-weight: 600;
      margin-bottom: 12px;
      color: #EEEEEE;
    }

    .friendship-links-container {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friendship-links-container a {
      color: #AAAAAA;
      text-decoration: none;
      font-size: 0.85rem;
      transition: var(--transition);
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      text-align: center;
      color: #888888;
    }

    /* Floating Widget */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 100px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background-color: var(--primary-hover);
      transform: scale(1.05);
    }

    .float-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 16px;
      box-shadow: 0 8px 30px rgba(0,0,0,0.1);
      width: 220px;
      display: none;
      color: var(--text-main);
    }

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

    .float-popover img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      margin-bottom: 8px;
    }

    .float-popover p {
      font-size: 0.8rem;
      text-align: center;
      margin-bottom: 4px;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-content h1 {
        font-size: 2.3rem;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-flow {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
      }
      .about-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      nav {
        display: none;
      }
      .mobile-menu-btn {
        display: flex;
      }
      nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        gap: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
        text-align: center;
      }
      .hero-content h1 {
        font-size: 1.8rem;
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .grid-2, .grid-3, .portfolio-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: 1fr;
      }
      section {
        padding: 60px 0;
      }
    }