/* ----------------------------------------------------
       炫彩荧光风 (Neon Light Theme) - 浅色基底 + 荧光渐变高光
    ---------------------------------------------------- */
    :root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      
      /* Neon Accents */
      --neon-cyan: #00e5ff;
      --neon-purple: #8b5cf6;
      --neon-pink: #ec4899;
      --neon-green: #10b981;
      --neon-amber: #f59e0b;
      
      --gradient-neon: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #6b21a8 100%);
      --gradient-btn: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
      --gradient-card-border: linear-gradient(135deg, rgba(6,182,212,0.4), rgba(139,92,246,0.4));
      
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.25);
      
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --max-width: 1240px;
    }

    * {
      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;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background: #f8fafc;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      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-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

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

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(90deg, #0284c7, #7c3aed);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    /* Nav Links Constraint: gap must be 0 as specified */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: #0284c7;
      background: rgba(6, 182, 212, 0.08);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-weight: 700;
      font-size: 0.95rem;
      color: #ffffff !important;
      background: var(--gradient-btn);
      border: none;
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
      cursor: pointer;
      white-space: nowrap;
      transition: all 0.3s ease;
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-weight: 600;
      font-size: 0.95rem;
      color: #0f172a;
      background: #ffffff;
      border: 2px solid #cbd5e1;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .btn-outline:hover {
      border-color: #3b82f6;
      color: #2563eb;
      background: rgba(59, 130, 246, 0.05);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

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

    .section-title-wrap {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: #0284c7;
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid rgba(6, 182, 212, 0.3);
      border-radius: 50px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

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

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section {
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 50% 20%, rgba(6, 182, 212, 0.12) 0%, rgba(139, 92, 246, 0.06) 40%, rgba(248, 250, 252, 0) 70%);
      text-align: center;
      position: relative;
    }

    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-h1 span {
      background: linear-gradient(120deg, #0284c7 0%, #7c3aed 50%, #db2777 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 860px;
      margin: 0 auto 36px auto;
      font-weight: 500;
    }

    .hero-ctas {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-cta-btn {
      padding: 14px 36px;
      font-size: 1.1rem;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .stat-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--gradient-btn);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .stat-num {
      font-size: 2rem;
      font-weight: 900;
      color: #0f172a;
      display: block;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Model Badges Wall */
    .model-wall {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 40px;
      max-width: 1000px;
      margin-left: auto;
      margin-right: auto;
    }

    .model-badge {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
      transition: all 0.2s;
    }

    .model-badge:hover {
      border-color: #06b6d4;
      color: #0284c7;
      background: rgba(6, 182, 212, 0.05);
    }

    /* Cards Grid System */
    .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;
    }

    .card-style {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }

    .card-style:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(6, 182, 212, 0.5);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
      color: #0284c7;
    }

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

    .card-p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Comparison Table Styling */
    .comparison-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow-x: auto;
    }

    .rating-header-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, rgba(6, 182, 212, 0.08), rgba(139, 92, 246, 0.08));
      padding: 20px 28px;
      border-radius: var(--radius-md);
      margin-bottom: 24px;
      border: 1px solid rgba(6, 182, 212, 0.2);
    }

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

    .score-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: #0284c7;
      line-height: 1;
    }

    .stars-box {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .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: 0.95rem;
    }

    .comp-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #334155;
    }

    .comp-table tr.highlight-row td {
      background: rgba(6, 182, 212, 0.03);
    }

    .badge-win {
      color: #059669;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Token Price Table */
    .token-table-container {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .token-table {
      width: 100%;
      border-collapse: collapse;
    }

    .token-table th, .token-table td {
      padding: 14px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.92rem;
    }

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

    .tag-low {
      background: #dcfce7;
      color: #15803d;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 700;
    }

    /* FAQ Accordion */
    .faq-list {
      max-width: 900px;
      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: all 0.25s ease;
    }

    .faq-question {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.5rem;
      color: #0284c7;
      transition: transform 0.25s;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

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

    /* Reviews Grid */
    .review-card {
      background: #ffffff;
      padding: 26px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      font-style: italic;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #06b6d4, #8b5cf6);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* Contact Form Section */
    .form-container {
      background: #ffffff;
      padding: 40px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-group input, .form-group select, .form-group textarea {
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
      border-color: #06b6d4;
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }

    /* Image Gallery Cards */
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .media-card-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .media-card-body {
      padding: 20px;
    }

    /* Article List Styling */
    .article-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    .article-links-list li a {
      color: #0284c7;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .article-links-list li a:hover {
      text-decoration: underline;
    }

    /* Footer Design */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 70px 0 30px 0;
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

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

    .footer-links a {
      color: #94a3b8;
    }

    .footer-links a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 25px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 10px;
    }

    .friend-links-wrap a {
      color: #cbd5e1;
      font-size: 0.85rem;
    }

    .friend-links-wrap a:hover {
      color: #38bdf8;
    }

    /* Floating Customer Service */
    .floating-widget {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--gradient-btn);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
      cursor: pointer;
      font-size: 1.3rem;
      transition: transform 0.25s;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    .float-qr-pop {
      position: absolute;
      bottom: 65px;
      right: 0;
      width: 180px;
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 14px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      display: none;
      text-align: center;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
    }

    .float-qr-pop p {
      font-size: 0.8rem;
      color: var(--text-main);
      margin-top: 6px;
      font-weight: 700;
    }

    .float-trigger:hover + .float-qr-pop,
    .float-qr-pop:hover {
      display: block;
    }

    /* Responsive Adaptation */
    @media (max-width: 1024px) {
      .hero-stats-grid, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .hero-h1 {
        font-size: 1.8rem;
      }
      .hero-stats-grid, .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .rating-header-box {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
    }