:root {
      --bg-main: #f9fbfd;
      --bg-surface: #ffffff;
      --bg-card: rgba(255, 255, 255, 0.92);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: rgba(226, 232, 240, 0.9);
      
      /* Laser Holographic Accents */
      --holo-grad-1: linear-gradient(135deg, #0ea5e9, #6366f1, #a855f7, #ec4899);
      --holo-grad-soft: linear-gradient(135deg, rgba(14, 165, 233, 0.12), rgba(99, 102, 241, 0.12), rgba(236, 72, 153, 0.12));
      --holo-border: linear-gradient(135deg, #38bdf8, #818cf8, #c084fc, #f472b6);
      --holo-glow: 0 10px 30px -10px rgba(99, 102, 241, 0.25);
      
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-max: 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-size: 16px;
    }

    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: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 15%, rgba(14, 165, 233, 0.08) 0%, transparent 35%),
        radial-gradient(circle at 90% 40%, rgba(168, 85, 247, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 30% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 45%);
      background-attachment: fixed;
    }

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

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: var(--transition);
    }

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

    .brand-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }

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

    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.08);
    }

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

    .btn-header {
      font-size: 0.88rem;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: 999px;
      background: var(--holo-grad-1);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
    }

    .btn-header:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* Section Typography */
    .section-padding {
      padding: 80px 0;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 52px;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      border-radius: 999px;
      background: var(--holo-grad-soft);
      border: 1px solid rgba(168, 85, 247, 0.3);
      color: #6366f1;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Holographic Card Shell */
    .holo-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      position: relative;
      transition: var(--transition);
      box-shadow: 0 4px 20px -4px rgba(15, 23, 42, 0.05);
    }

    .holo-card:hover {
      border-color: rgba(168, 85, 247, 0.4);
      transform: translateY(-4px);
      box-shadow: var(--holo-glow);
    }

    /* Hero Section (STRICTLY NO IMAGES) */
    .hero-section {
      padding: 90px 0 80px;
      text-align: center;
      position: relative;
    }

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

    .hero-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 20px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(99, 102, 241, 0.25);
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.08);
      font-size: 0.88rem;
      font-weight: 600;
      color: #4f46e5;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 900;
      letter-spacing: -0.03em;
      color: var(--text-main);
      margin-bottom: 22px;
    }

    .hero-title .highlight-text {
      background: var(--holo-grad-1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.75;
      max-width: 760px;
      margin: 0 auto 36px;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-primary-glow {
      padding: 16px 36px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 999px;
      background: var(--holo-grad-1);
      color: #ffffff !important;
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
      border: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      cursor: pointer;
    }

    .btn-primary-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(236, 72, 153, 0.4);
    }

    .btn-secondary-outline {
      padding: 16px 32px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: 999px;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-secondary-outline:hover {
      border-color: #6366f1;
      color: #4f46e5;
    }

    .hero-badges-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .hero-badge-box {
      padding: 18px 14px;
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-md);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    }

    .hero-badge-box .val {
      font-size: 1.55rem;
      font-weight: 800;
      color: #4f46e5;
      margin-bottom: 4px;
    }

    .hero-badge-box .lbl {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Model Matrix Pill Wall */
    .models-marquee {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-tag {
      padding: 6px 14px;
      font-size: 0.82rem;
      font-weight: 600;
      border-radius: 999px;
      background: #ffffff;
      border: 1px solid rgba(203, 213, 225, 0.7);
      color: var(--text-muted);
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: var(--transition);
    }

    .model-tag:hover {
      border-color: #a855f7;
      color: #6366f1;
      transform: translateY(-2px);
    }

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

    .service-card {
      padding: 30px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .service-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--holo-grad-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      border: 1px solid rgba(99, 102, 241, 0.2);
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .service-card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 18px;
    }

    .service-card-tags span {
      font-size: 0.78rem;
      padding: 3px 10px;
      border-radius: 6px;
      background: rgba(241, 245, 249, 0.8);
      color: var(--text-light);
      font-weight: 500;
    }

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

    .step-card {
      padding: 28px 22px;
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      background: var(--holo-grad-1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 12px;
      line-height: 1;
    }

    .step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* Comparison Table */
    .compare-container {
      overflow-x: auto;
      border-radius: var(--radius-md);
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 6px 24px -6px rgba(15, 23, 42, 0.05);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
      text-align: left;
    }

    .compare-table th,
    .compare-table td {
      padding: 18px 22px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table th.highlight-col,
    .compare-table td.highlight-col {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 24px 32px;
      background: var(--holo-grad-soft);
      border: 1px solid rgba(168, 85, 247, 0.3);
      border-radius: var(--radius-md);
      margin-bottom: 24px;
    }

    .rating-banner .score-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: #4f46e5;
    }

    /* Media & Cases */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .case-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--holo-glow);
    }

    .case-img-wrap {
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #e2e8f0;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-info {
      padding: 20px;
    }

    .case-info h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .case-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

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

    .review-card {
      padding: 28px;
    }

    .review-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--holo-grad-1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .review-author {
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
    }

    .review-role {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      font-style: normal;
    }

    /* FAQ Accordion */
    .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-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-header:hover {
      color: var(--primary);
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--text-light);
    }

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

    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-body {
      padding: 0 24px 20px 24px;
      max-height: 300px;
    }

    /* Demand Form & Contact */
    .form-contact-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .contact-info-panel {
      padding: 36px;
    }

    .contact-info-panel h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .qr-box {
      margin-top: 24px;
      padding: 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: inline-block;
      text-align: center;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      border-radius: 8px;
      margin-bottom: 8px;
    }

    .form-box {
      padding: 36px;
      background: #ffffff;
    }

    .form-box h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

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

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .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);
      background: #f8fafc;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: #6366f1;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

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

    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--holo-grad-1);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
    }

    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    /* Articles / News */
    .article-links-wrap {
      margin-top: 24px;
      padding: 24px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .article-link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
    }

    .article-link-list li a {
      font-size: 0.9rem;
      color: #4f46e5;
      background: rgba(99, 102, 241, 0.06);
      padding: 6px 14px;
      border-radius: 6px;
      display: inline-block;
    }

    .article-link-list li a:hover {
      background: rgba(99, 102, 241, 0.15);
    }

    /* Footer */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      margin-top: 12px;
      max-width: 400px;
      line-height: 1.6;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a {
      color: var(--text-muted);
    }

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

    .friend-links-area {
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }

    .friend-links-area span {
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.88rem;
    }

    .friend-links-area a {
      font-size: 0.86rem;
      color: var(--text-light);
    }

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

    .footer-bottom {
      text-align: center;
      font-size: 0.84rem;
      color: var(--text-light);
      padding-top: 20px;
      border-top: 1px solid #f1f5f9;
    }

    /* Floating Tool */
    .floating-bar {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 6px 18px rgba(15, 23, 42, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      color: var(--text-main);
      font-weight: 700;
      font-size: 1rem;
    }

    .float-btn:hover {
      background: var(--holo-grad-1);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-gallery-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-badges-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        width: 100%;
        padding: 10px 14px;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .services-grid,
      .steps-grid,
      .case-gallery-grid,
      .reviews-grid,
      .form-contact-wrap,
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 12px;
      }
    }