:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --rainbow-1: #ff5e62;
      --rainbow-2: #ff9966;
      --rainbow-3: #f9d423;
      --rainbow-4: #00c9a7;
      --rainbow-5: #0083b0;
      --rainbow-6: #845ec2;
      --rainbow-grad: linear-gradient(135deg, #ff5e62, #ff9966, #f9d423, #00c9a7, #0083b0, #845ec2);
      --rainbow-subtle: linear-gradient(135deg, rgba(255,94,98,0.06), rgba(255,153,102,0.06), rgba(0,201,167,0.06), rgba(0,131,176,0.06), rgba(132,94,194,0.06));
      --bg-page: #fafbfe;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --border-color: #e2e8f0;
      --border-focus: #c7d2fe;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(99,102,241,0.08);
      --shadow-hover: 0 14px 32px rgba(99,102,241,0.14);
      --container-max: 1200px;
    }

    * {
      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-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 10% 10%, rgba(255,94,98,0.03) 0%, transparent 40%),
                        radial-gradient(circle at 90% 30%, rgba(0,201,167,0.04) 0%, transparent 50%),
                        radial-gradient(circle at 50% 80%, rgba(132,94,194,0.03) 0%, transparent 45%);
    }

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

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

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.02);
    }

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

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

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

    .brand-title-text {
      font-size: 1.25rem;
      font-weight: 700;
      background: var(--rainbow-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.06);
    }

    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.92rem;
      font-weight: 600;
      color: #ffffff !important;
      background: linear-gradient(135deg, #ff5e62, #845ec2);
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(255, 94, 98, 0.25);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(132, 94, 194, 0.35);
    }

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

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      overflow: hidden;
      background: var(--rainbow-subtle);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(249, 212, 35, 0.4);
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
      font-size: 0.85rem;
      font-weight: 600;
      color: #d97706;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 2.5rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .hero-subtitle {
      font-size: 1.125rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .btn-main-official {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 34px;
      background: var(--rainbow-grad);
      color: #ffffff !important;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      box-shadow: 0 8px 24px rgba(255, 94, 98, 0.3);
      transition: all 0.25s ease;
    }

    .btn-main-official:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 28px rgba(132, 94, 194, 0.4);
    }

    .btn-secondary-outline {
      display: inline-flex;
      align-items: center;
      padding: 14px 28px;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

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

    .stat-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 12px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .stat-card-box:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .stat-number {
      font-size: 1.6rem;
      font-weight: 800;
      background: var(--rainbow-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: block;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* General Section Layout */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-wrap-alt {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 46px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(99, 102, 241, 0.08);
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      text-transform: uppercase;
      margin-bottom: 10px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Model Badges Grid */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-pill {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .model-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .pill-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #00c9a7;
    }

    /* Service Cards Grid */
    .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;
      align-items: center;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .card-top-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      background: var(--rainbow-subtle);
      border: 1px solid var(--border-color);
    }

    .card-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-tag-pill {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      background: rgba(0, 201, 167, 0.1);
      color: #0d9488;
      font-weight: 600;
      display: inline-block;
      margin-top: 14px;
      align-self: flex-start;
    }

    /* Comparison Table & Review */
    .review-score-box {
      background: linear-gradient(135deg, #ffffff, #fdf4f5);
      border: 2px solid #ff9966;
      border-radius: var(--radius-md);
      padding: 30px;
      text-align: center;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
    }

    .score-badge {
      font-size: 3rem;
      font-weight: 800;
      color: #ff5e62;
      line-height: 1;
      margin-bottom: 8px;
    }

    .stars-indicator {
      color: #f59e0b;
      font-size: 1.3rem;
      margin-bottom: 8px;
      letter-spacing: 4px;
    }

    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

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

    .comparison-table tr:hover {
      background: rgba(99, 102, 241, 0.02);
    }

    .highlight-col {
      background: rgba(99, 102, 241, 0.04);
      font-weight: 600;
      color: var(--primary);
    }

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

    .flow-step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 34px;
      height: 34px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-weight: 700;
      font-size: 0.95rem;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    /* Media/Banner Display */
    .banner-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 30px;
    }

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

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

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

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

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

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

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

    .review-user-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-content {
      font-size: 0.9rem;
      color: var(--text-main);
      line-height: 1.6;
      font-style: normal;
    }

    /* FAQ Section */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item.active {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.25s ease;
      color: var(--primary);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding-bottom: 18px;
    }

    /* Form Section */
    .form-container-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--shadow-md);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .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;
      color: var(--text-main);
      background: #f8fafc;
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

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

    .btn-submit-form {
      width: 100%;
      padding: 14px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(255, 94, 98, 0.3);
      transition: all 0.25s ease;
    }

    .btn-submit-form:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(132, 94, 194, 0.4);
    }

    /* Articles & Links Grid */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .article-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .article-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .article-link-btn {
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Agency Franchise Box */
    .agency-cta-banner {
      background: linear-gradient(135deg, #4f46e5, #845ec2);
      border-radius: var(--radius-lg);
      padding: 40px;
      color: #ffffff;
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
      align-items: center;
      box-shadow: var(--shadow-md);
    }

    .agency-text-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .agency-text-content p {
      font-size: 1rem;
      color: rgba(255, 255, 255, 0.9);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .agency-perks-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .agency-perk-item {
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(8px);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 500;
    }

    .agency-action-box {
      text-align: center;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      color: var(--text-main);
    }

    /* Footer Styles */
    .site-footer {
      background: #0f172a;
      color: #f8fafc;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand-title {
      font-size: 1.4rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-desc {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .footer-heading {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
      position: relative;
    }

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

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .footer-links-list a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .footer-qr-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-img-box {
      width: 90px;
      height: 90px;
      background: #ffffff;
      padding: 6px;
      border-radius: var(--radius-sm);
    }

    .qr-info-text {
      font-size: 0.82rem;
      color: #94a3b8;
      line-height: 1.5;
    }

    .footer-bottom-bar {
      border-top: 1px solid #334155;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: #94a3b8;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 20px;
      border-bottom: 1px solid #1e293b;
      font-size: 0.85rem;
      color: #94a3b8;
    }

    .friend-links-bar a {
      color: #cbd5e1;
    }

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

    /* Floating Contact Pill */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--rainbow-grad);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      border: none;
      font-size: 1.2rem;
      transition: transform 0.2s;
    }

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

    /* Responsive */
    @media (max-width: 992px) {
      .hero-title { font-size: 2rem; }
      .grid-3, .grid-4, .reviews-grid, .articles-grid, .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-main-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .agency-cta-banner {
        grid-template-columns: 1fr;
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title { font-size: 1.7rem; }
      .hero-stats-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .grid-4, .reviews-grid, .articles-grid, .flow-steps, .banner-showcase {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
      }
    }