:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --neon-cyan: #00f2fe;
      --neon-purple: #7000ff;
      --neon-pink: #ec4899;
      --accent-blue: #2563eb;
      --border-glow: rgba(112, 0, 255, 0.18);
      --shadow-neon: 0 10px 30px -10px rgba(112, 0, 255, 0.2);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: var(--accent-blue);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    a:hover {
      color: var(--neon-purple);
    }

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

    /* Header & Navigation */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(112, 0, 255, 0.1);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* Strictly set to 0 as required */
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--neon-purple);
      background: rgba(112, 0, 255, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: none;
      transition: all 0.3s ease;
      white-space: nowrap;
    }

    .btn-neon {
      background: linear-gradient(135deg, var(--neon-purple) 0%, var(--accent-blue) 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(112, 0, 255, 0.3);
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(112, 0, 255, 0.4);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--neon-purple);
      color: var(--neon-purple);
    }

    .btn-outline:hover {
      background: rgba(112, 0, 255, 0.08);
      transform: translateY(-2px);
    }

    /* Section Component Styles */
    section {
      padding: 80px 0;
      position: relative;
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--neon-purple);
      background: rgba(112, 0, 255, 0.08);
      border: 1px solid rgba(112, 0, 255, 0.2);
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Grid Layouts */
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

    /* Card Base */
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 16px;
      padding: 28px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

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

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section {
      padding: 100px 0 80px;
      background: radial-gradient(circle at 50% 0%, rgba(112, 0, 255, 0.08) 0%, rgba(0, 242, 254, 0.03) 50%, rgba(248, 250, 252, 0) 100%);
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(112, 0, 255, 0.3);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--neon-purple);
      box-shadow: 0 2px 10px rgba(112, 0, 255, 0.1);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #0f172a 0%, #3b82f6 50%, #7000ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 60px;
      flex-wrap: wrap;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid rgba(112, 0, 255, 0.12);
      border-radius: 12px;
      padding: 20px;
      text-align: center;
    }

    .metric-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--neon-purple);
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Comparison Table Component */
    .comparison-box {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border-glow);
      overflow: hidden;
      box-shadow: var(--shadow-neon);
    }

    .review-score-header {
      background: linear-gradient(135deg, rgba(112, 0, 255, 0.05) 0%, rgba(0, 242, 254, 0.05) 100%);
      padding: 30px;
      text-align: center;
      border-bottom: 1px solid rgba(112, 0, 255, 0.1);
    }

    .stars {
      color: #f59e0b;
      font-size: 24px;
      margin-bottom: 8px;
    }

    .score-num {
      font-size: 36px;
      font-weight: 900;
      color: var(--neon-purple);
    }

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

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

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

    .highlight-col {
      background: rgba(112, 0, 255, 0.03);
      font-weight: 600;
      color: var(--neon-purple);
    }

    /* Model Tag Cloud */
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid rgba(112, 0, 255, 0.15);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-main);
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    .model-tag.hot {
      border-color: var(--neon-pink);
      color: var(--neon-pink);
      background: rgba(236, 72, 153, 0.05);
    }

    /* Workflow Steps */
    .step-card {
      position: relative;
      text-align: left;
    }

    .step-num {
      display: inline-block;
      width: 36px;
      height: 36px;
      line-height: 36px;
      background: var(--neon-purple);
      color: #ffffff;
      border-radius: 50%;
      text-align: center;
      font-weight: 700;
      margin-bottom: 16px;
    }

    /* FAQ Accordion */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      padding: 20px;
      cursor: pointer;
    }

    .faq-question {
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-answer {
      margin-top: 12px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Form Styling */
    .contact-form {
      background: #ffffff;
      border: 1px solid var(--border-glow);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-neon);
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      outline: none;
      transition: all 0.3s;
    }

    .form-control:focus {
      border-color: var(--neon-purple);
      box-shadow: 0 0 0 3px rgba(112, 0, 255, 0.15);
    }

    /* Footer */
    footer.site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand p {
      margin-top: 12px;
      font-size: 14px;
      color: #64748b;
    }

    .footer-title {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #94a3b8;
      font-size: 14px;
    }

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

    .friendship-links {
      padding-top: 24px;
      border-top: 1px solid #1e293b;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    .friendship-links a {
      color: #64748b;
    }

    .friendship-links a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      text-align: center;
      font-size: 13px;
      color: #475569;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
    }

    /* Floating Customer Service */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      background: #ffffff;
      border: 1px solid var(--neon-purple);
      border-radius: 12px;
      padding: 12px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      text-align: center;
    }

    .float-service img {
      width: 100px;
      height: 100px;
      border-radius: 6px;
    }

    /* Mobile Responsive */
    @media (max-width: 992px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(1, 1fr); }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .hero-title { font-size: 32px; }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .nav-links { display: none; }
    }

    @media (max-width: 640px) {
      .grid-2, .grid-4, .hero-metrics { grid-template-columns: 1fr; }
      .hero-title { font-size: 26px; }
      section { padding: 50px 0; }
    }