:root {
      --bg-main: #0b0914;
      --bg-card: rgba(26, 18, 48, 0.7);
      --bg-card-hover: rgba(38, 26, 68, 0.85);
      --border-color: rgba(236, 72, 153, 0.25);
      --border-glow: rgba(217, 70, 239, 0.5);
      --primary: #ec4899;
      --primary-glow: #f43f5e;
      --secondary: #a855f7;
      --accent: #06b6d4;
      --text-main: #f8fafc;
      --text-muted: #cbd5e1;
      --text-dim: #94a3b8;
      --container-max: 1200px;
      --radius: 12px;
      --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, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      background: radial-gradient(circle at 50% 0%, #2e1065 0%, #0b0914 70%);
      min-height: 100vh;
      overflow-x: hidden;
      line-height: 1.6;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Header & Navigation */
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 9, 20, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.5px;
      background: linear-gradient(90deg, #fff, #f472b6);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.95rem;
      padding: 8px 14px;
      border-radius: 6px;
      transition: var(--transition);
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
      background: rgba(236, 72, 153, 0.15);
      text-shadow: 0 0 8px rgba(236, 72, 153, 0.6);
    }

    .nav-cta-btn {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff !important;
      font-weight: 600;
      padding: 8px 18px !important;
      border-radius: 20px !important;
      box-shadow: 0 0 15px rgba(236, 72, 153, 0.4);
      margin-left: 8px;
    }

    .nav-cta-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 22px rgba(236, 72, 153, 0.7);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 1.5rem;
      padding: 4px 10px;
      border-radius: 6px;
      cursor: pointer;
    }

    /* Hero Section (No Images as per requirement) */
    .hero-section {
      padding: 80px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 30px;
      background: rgba(236, 72, 153, 0.1);
      border: 1px solid var(--border-glow);
      color: #f472b6;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 0 20px rgba(217, 70, 239, 0.2);
    }

    .hero-badge span {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #ec4899;
      box-shadow: 0 0 8px #ec4899;
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.8); }
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #ffffff;
      text-shadow: 0 0 30px rgba(168, 85, 247, 0.4);
    }

    .hero-title-highlight {
      background: linear-gradient(135deg, #f472b6, #c084fc, #38bdf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.8;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 30px;
      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, #ec4899, #8b5cf6);
      color: #fff;
      box-shadow: 0 4px 20px rgba(236, 72, 153, 0.4);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(236, 72, 153, 0.65);
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--primary);
    }

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

    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px 16px;
      text-align: center;
      transition: var(--transition);
    }

    .stat-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-3px);
      box-shadow: 0 10px 25px rgba(217, 70, 239, 0.15);
    }

    .stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: #f472b6;
      margin-bottom: 6px;
    }

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

    /* Section Global Styles */
    section {
      padding: 70px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 10px;
      display: block;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .section-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 650px;
      margin: 0 auto;
    }

    /* Cards & Grids */
    .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;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .feature-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(168, 85, 247, 0.2);
    }

    .card-icon {
      font-size: 2rem;
      margin-bottom: 16px;
      display: inline-block;
      color: #f472b6;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .card-tag-item {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(236, 72, 153, 0.12);
      color: #f472b6;
      border: 1px solid rgba(236, 72, 153, 0.2);
    }

    /* Model Tags Cloud */
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-pill {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: var(--text-muted);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 500;
      transition: var(--transition);
    }

    .model-pill:hover {
      border-color: var(--primary);
      color: #fff;
      background: rgba(236, 72, 153, 0.15);
      transform: scale(1.05);
    }

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

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

    .step-number {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      font-weight: 700;
      font-size: 1.1rem;
      margin: 0 auto 16px;
      box-shadow: 0 0 15px rgba(236, 72, 153, 0.5);
    }

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

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

    .case-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      background: rgba(0, 0, 0, 0.3);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-wrap.square-img {
      aspect-ratio: 1/1;
    }

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

    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 20px;
    }

    /* Comparison Table */
    .compare-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      overflow-x: auto;
    }

    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, rgba(236, 72, 153, 0.2), rgba(168, 85, 247, 0.2));
      border: 1px solid var(--border-glow);
      border-radius: 8px;
      padding: 20px 24px;
      margin-bottom: 24px;
    }

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

    .score-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: #f472b6;
    }

    .score-stars {
      color: #fbbf24;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .compare-table th,
    .compare-table td {
      padding: 14px 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.95rem;
    }

    .compare-table th {
      color: #fff;
      font-weight: 700;
      background: rgba(255, 255, 255, 0.03);
    }

    .compare-table .highlight-col {
      background: rgba(236, 72, 153, 0.08);
      color: #f472b6;
      font-weight: 600;
    }

    /* FAQ Accordion */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

    .faq-question:hover {
      background: rgba(255, 255, 255, 0.02);
    }

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

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.35s ease;
      background: rgba(0, 0, 0, 0.2);
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .faq-answer p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Reviews Section */
    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-3px);
    }

    .review-text {
      font-size: 0.93rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      font-style: italic;
      line-height: 1.7;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
    }

    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 600;
      color: #fff;
    }

    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    /* Articles / News */
    .article-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
      text-decoration: none;
      transition: var(--transition);
      display: block;
    }

    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }

    .article-meta {
      font-size: 0.8rem;
      color: var(--primary);
    }

    /* Contact & Form Section */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
    }

    .form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      background: rgba(11, 9, 20, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 6px;
      padding: 12px 14px;
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 10px rgba(236, 72, 153, 0.3);
    }

    .contact-info-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .contact-icon {
      font-size: 1.3rem;
      color: #f472b6;
      margin-top: 2px;
    }

    .contact-qr {
      text-align: center;
      margin-top: 10px;
      padding-top: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .contact-qr img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      border-radius: 8px;
      border: 1px solid var(--border-glow);
    }

    .contact-qr-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* Footer */
    footer {
      background: #07050d;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
    }

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

    .footer-about p {
      font-size: 0.88rem;
      color: var(--text-dim);
      margin-top: 12px;
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }

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

    .footer-links a {
      color: var(--text-dim);
      text-decoration: none;
      font-size: 0.88rem;
      transition: var(--transition);
    }

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

    .friend-links-area {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      margin-top: 20px;
    }

    .friend-links-title {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-wrap a {
      color: var(--text-dim);
      text-decoration: none;
      font-size: 0.84rem;
      transition: var(--transition);
    }

    .friend-links-wrap a:hover {
      color: #f472b6;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: var(--text-dim);
    }

    /* Floating Widget */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
      cursor: pointer;
      border: none;
      font-size: 1.2rem;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.1);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.7);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-3, .grid-4, .stats-grid, .workflow-steps, .case-grid, .article-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 2rem;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #0b0914;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        gap: 0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .mobile-menu-btn {
        display: block;
      }
      .grid-3, .grid-4, .stats-grid, .workflow-steps, .case-grid, .article-list, .grid-2 {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }