:root {
      --bg-main: #f8fafc;
      --bg-alt: #f1f5f9;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --primary: #4f46e5;
      --primary-neon: #06b6d4;
      --accent-pink: #ec4899;
      --accent-purple: #8b5cf6;
      --accent-cyan: #0891b2;
      --border-color: #e2e8f0;
      --border-neon: rgba(79, 70, 229, 0.2);
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-neon: 0 0 20px rgba(6, 182, 212, 0.15), 0 0 40px rgba(236, 72, 153, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(79, 70, 229, 0.03) 0%, transparent 60%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 1px 10px rgba(0,0,0,0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text-main);
    }
    .brand-logo-wrap {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .brand-text {
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .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;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
      color: #ffffff;
    }
    .btn-neon {
      background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3);
    }
    .btn-neon:hover {
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
      transform: translateY(-2px);
      color: #ffffff;
    }
    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(79, 70, 229, 0.03);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* Hero Section (No Images as required) */
    .hero-section {
      padding: 90px 0 60px;
      position: relative;
      overflow: hidden;
    }
    .hero-glow-1 {
      position: absolute;
      top: -100px;
      left: 10%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(79, 70, 229, 0.12) 0%, transparent 70%);
      pointer-events: none;
      z-index: 0;
    }
    .hero-glow-2 {
      position: absolute;
      top: 50px;
      right: 5%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(236, 72, 153, 0.1) 0%, transparent 70%);
      pointer-events: none;
      z-index: 0;
    }
    .hero-inner {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(6, 182, 212, 0.3);
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.12);
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--accent-cyan);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title .neon-text {
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 50%, #ec4899 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-features-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .hero-features-bar::before {
      content: "";
      position: absolute;
      inset: -1px;
      border-radius: var(--radius-lg);
      padding: 1px;
      background: linear-gradient(90deg, #4f46e5, #06b6d4, #ec4899);
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    .feature-item {
      text-align: center;
      padding: 8px 12px;
    }
    .feature-item-num {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .feature-item-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Section Global */
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
    }

    /* Model Cloud */
    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }
    .model-tag {
      padding: 8px 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 25px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .model-tag:hover {
      border-color: var(--primary-neon);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
    }

    /* Cards Grid */
    .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: 28px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-neon);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .card-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .card-tag {
      font-size: 0.8rem;
      color: var(--accent-cyan);
      font-weight: 600;
      background: rgba(6, 182, 212, 0.08);
      padding: 4px 10px;
      border-radius: 6px;
      align-self: flex-start;
    }

    /* Visual Media Cards with Provided Assets */
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .media-card-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
      overflow: hidden;
    }
    .media-card-img-square {
      aspect-ratio: 1 / 1;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.04);
    }
    .media-card-body {
      padding: 20px;
    }
    .media-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-card-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Compare Section */
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .rating-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 24px;
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      flex-wrap: wrap;
      gap: 16px;
    }
    .rating-badge-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .rating-score {
      font-size: 2.4rem;
      font-weight: 800;
      background: linear-gradient(135deg, #4f46e5, #ec4899);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .rating-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.94rem;
    }
    .compare-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:hover td {
      background: rgba(79, 70, 229, 0.02);
    }
    .compare-highlight {
      font-weight: 700;
      color: var(--primary);
    }

    /* Process Flow */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .flow-step-num {
      font-size: 2rem;
      font-weight: 800;
      color: rgba(79, 70, 229, 0.15);
      line-height: 1;
      margin-bottom: 12px;
    }
    .flow-step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .flow-step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Testimonials */
    .testimonial-card {
      background: #ffffff;
      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-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-neon));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .user-meta-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ Panel */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* Form Section */
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }
    .contact-info-block {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .qr-container {
      width: 140px;
      height: 140px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      padding: 6px;
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }
    .qr-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      color: var(--text-main);
      background: var(--bg-alt);
      transition: all 0.25s ease;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }
    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    /* Banner Grid */
    .banner-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 30px;
    }
    .banner-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .banner-item img {
      display: block;
      width: 100%;
      height: auto;
    }

    /* Links Box */
    .links-block {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      margin-top: 24px;
    }
    .links-title {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .links-flex a {
      font-size: 0.9rem;
      color: var(--text-muted);
      background: var(--bg-alt);
      padding: 6px 14px;
      border-radius: 6px;
    }
    .links-flex a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      margin-top: 60px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      padding-bottom: 40px;
      border-bottom: 1px solid #1e293b;
    }
    .footer-brand {
      color: #ffffff;
      font-weight: 800;
      font-size: 1.3rem;
      margin-bottom: 14px;
    }
    .footer-col-title {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-links-list li a:hover {
      color: var(--primary-neon);
    }
    .footer-bottom {
      padding-top: 30px;
      text-align: center;
      font-size: 0.88rem;
    }

    /* Floating Customer Service */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
      cursor: pointer;
      transition: transform 0.3s ease;
    }
    .floating-kefu:hover {
      transform: scale(1.08);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-4, .flow-steps, .banner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .hero-features-bar {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid var(--border-color);
      }
      .menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .grid-2, .grid-3, .grid-4, .flow-steps, .banner-grid, .hero-features-bar {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }