:root {
      --primary: #5c3be7;
      --primary-gradient: linear-gradient(135deg, #635bff 0%, #a259ff 50%, #ff4b82 100%);
      --accent-pink: #ff4b82;
      --accent-cyan: #00c9a7;
      --accent-yellow: #ffb800;
      --bg-candy: #f6f8fd;
      --bg-white: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 12px rgba(99, 91, 255, 0.06);
      --shadow-md: 0 10px 25px rgba(99, 91, 255, 0.1);
      --shadow-lg: 0 20px 40px rgba(99, 91, 255, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --container-width: 1200px;
    }

    * {
      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;
    }

    body {
      background-color: var(--bg-candy);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Header & Navigation */
    .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(226, 232, 240, 0.8);
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }

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

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

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

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -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 {
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 600;
      color: #334155;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 91, 255, 0.08);
    }

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

    .btn-nav-primary {
      background: var(--primary-gradient);
      color: #ffffff !important;
      padding: 10px 20px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.9rem;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: inline-block;
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

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

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

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      background: linear-gradient(135deg, rgba(99, 91, 255, 0.1), rgba(255, 75, 130, 0.1));
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      border-radius: 30px;
      margin-bottom: 12px;
      border: 1px solid rgba(99, 91, 255, 0.15);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

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

    /* Hero Section (No Images as per Constraint) */
    .hero-section {
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 10% 20%, rgba(99, 91, 255, 0.08) 0%, rgba(255, 75, 130, 0.05) 50%, rgba(246, 248, 253, 0) 100%), #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .hero-inner {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      padding: 6px 20px;
      border-radius: 40px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-badge span {
      background: var(--accent-pink);
      color: #fff;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 10px;
    }

    h1.hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #0f172a;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: #475569;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }

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

    .btn-hero-main {
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 16px 36px;
      border-radius: 50px;
      font-size: 1.1rem;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(99, 91, 255, 0.3);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(99, 91, 255, 0.4);
    }

    .btn-hero-sub {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-color);
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 1.05rem;
      font-weight: 700;
      transition: all 0.3s ease;
    }

    .btn-hero-sub:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(99, 91, 255, 0.04);
    }

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

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease;
    }

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

    .metric-num {
      font-size: 2rem;
      font-weight: 900;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

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

    /* Standard Cards Layout */
    .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-candy {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .card-candy:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(99, 91, 255, 0.3);
    }

    .card-icon-badge {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(99, 91, 255, 0.12), rgba(255, 75, 130, 0.12));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--primary);
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0f172a;
    }

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

    /* Feature Scenarios Tags Cloud & Grid */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .scenario-item {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 20px;
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
    }

    .scenario-item:hover {
      transform: translateX(4px);
    }

    .scenario-item h4 {
      font-size: 1.05rem;
      color: #0f172a;
      margin-bottom: 8px;
    }

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

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

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #635bff 0%, #8b5cf6 100%);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
    }

    .rating-score {
      font-size: 2.6rem;
      font-weight: 900;
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .rating-score span {
      font-size: 1.1rem;
      opacity: 0.85;
    }

    .comp-table-container {
      overflow-x: auto;
    }

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

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .comp-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #0f172a;
    }

    .comp-table td:nth-child(2) {
      font-weight: 700;
      color: var(--primary);
      background: rgba(99, 91, 255, 0.02);
    }

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

    .step-card {
      background: #fff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
    }

    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin: 0 auto 16px auto;
    }

    /* Token Price Board */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }

    .token-price {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent-pink);
      margin: 12px 0;
    }

    /* Cases Media Grid */
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .media-card-img {
      width: 100%;
      height: auto;
      display: block;
    }

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

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

    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* FAQ Accordion */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-question {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      color: #0f172a;
    }

    .faq-answer {
      padding: 0 24px 20px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      display: none;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-toggle {
      font-weight: 400;
      font-size: 1.2rem;
      transition: transform 0.2s ease;
    }

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

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

    .article-item {
      background: #fff;
      padding: 16px 24px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .article-item a {
      color: #0f172a;
      font-weight: 600;
    }

    .article-item a:hover {
      color: var(--primary);
    }

    /* Forms */
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

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

    .form-label {
      display: block;
      font-weight: 700;
      margin-bottom: 8px;
      font-size: 0.92rem;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
    }

    .btn-submit {
      width: 100%;
      background: var(--primary-gradient);
      color: #fff;
      padding: 14px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: opacity 0.2s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
    }

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

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

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

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

    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

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

    .friendship-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
      margin-top: 30px;
    }

    .friendship-box a {
      color: #94a3b8;
      font-size: 0.85rem;
    }

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

    .footer-bottom {
      text-align: center;
      padding-top: 30px;
      border-top: 1px solid #1e293b;
      font-size: 0.85rem;
    }

    /* Floating Contact Widget */
    .floating-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 12px 16px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .floating-kefu img {
      width: 48px;
      height: 48px;
      border-radius: 6px;
    }

    /* Models Badge Cloud */
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .grid-3, .grid-4, .hero-metrics-grid, .process-steps, .token-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      h1.hero-h1 {
        font-size: 2rem;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .grid-2, .grid-3, .grid-4, .hero-metrics-grid, .process-steps, .token-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .floating-kefu {
        display: none;
      }
    }