:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent: #ec4899;
      --vibrant-cyan: #06b6d4;
      --vibrant-amber: #f59e0b;
      --vibrant-emerald: #10b981;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --border: #e2e8f0;
      --border-focus: #c7d2fe;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
      --radius: 12px;
      --container-max: 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;
      color: var(--text-main);
      background-color: var(--bg-page);
    }

    body {
      line-height: 1.6;
      background: radial-gradient(circle at 10% 20%, rgba(236, 72, 153, 0.03) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(79, 70, 229, 0.04) 0%, transparent 40%),
                  #f8fafc;
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--text-main);
    }

    .brand-logo img {
      height: 38px;
      width: auto;
      max-width: 100%;
    }

    .brand-title {
      font-weight: 800;
      font-size: 20px;
      background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
      -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 {
      display: inline-block;
      padding: 8px 14px;
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 8px;
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      line-height: 1.4;
    }

    .btn-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.45);
    }

    .btn-accent {
      background: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.35);
    }

    .btn-accent:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(236, 72, 153, 0.45);
    }

    .btn-outline {
      border-color: var(--border);
      color: var(--text-muted);
      background: #ffffff;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

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

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

    /* Hero Section (Strictly No Images) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      background: linear-gradient(180deg, rgba(241, 245, 249, 0.8) 0%, rgba(248, 250, 252, 1) 100%);
      border-bottom: 1px solid var(--border);
    }

    .hero-content {
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #eef2ff;
      border: 1px solid #c7d2fe;
      border-radius: 9999px;
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title .gradient-text {
      background: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
    }

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

    .hero-features-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      padding: 24px;
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 16px;
      box-shadow: var(--shadow-sm);
    }

    .hero-feature-item {
      text-align: center;
      padding: 8px 12px;
      border-right: 1px solid var(--border);
    }

    .hero-feature-item:last-child {
      border-right: none;
    }

    .hero-feature-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      display: block;
      margin-bottom: 4px;
    }

    .hero-feature-label {
      font-size: 14px;
      color: var(--text-sub);
    }

    /* Section Global Styles */
    section {
      padding: 68px 0;
      border-bottom: 1px solid var(--border);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-tag {
      font-size: 13px;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--accent);
      margin-bottom: 8px;
      display: inline-block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Models Cloud */
    .model-tags-wrapper {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      box-shadow: var(--shadow-sm);
    }

    .model-tag {
      background: #f1f5f9;
      color: var(--text-main);
      border: 1px solid #e2e8f0;
      padding: 7px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: #eef2ff;
      border-color: #c7d2fe;
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* Grid Layouts */
    .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: 32px;
    }

    /* Cards */
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      border-color: #c7d2fe;
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      color: var(--primary);
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .card-badge {
      display: inline-block;
      align-self: flex-start;
      margin-top: 14px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: #eef2ff;
      padding: 3px 10px;
      border-radius: 4px;
    }

    /* Banner / Image showcase blocks */
    .showcase-block {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .showcase-img-wrap {
      width: 100%;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .showcase-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .showcase-block:hover .showcase-img-wrap img {
      transform: scale(1.02);
    }

    .showcase-body {
      padding: 20px 24px;
    }

    /* Comparison Table */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
    }

    .score-card-top {
      background: linear-gradient(135deg, #eef2ff 0%, #fdf2f8 100%);
      padding: 24px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-left h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .score-left p {
      font-size: 14px;
      color: var(--text-muted);
    }

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

    .rating-badge {
      font-size: 20px;
      color: #f59e0b;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .rating-number {
      font-size: 34px;
      font-weight: 900;
      color: var(--primary);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 24px;
      border-bottom: 1px solid var(--border);
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--text-muted);
      font-weight: 600;
    }

    .compare-table tr:hover td {
      background: #f8fafc;
    }

    .cell-highlight {
      color: var(--primary);
      font-weight: 700;
      background: rgba(79, 70, 229, 0.03);
    }

    .badge-check {
      color: #10b981;
      font-weight: bold;
    }

    .badge-cross {
      color: #94a3b8;
    }

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

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

    .step-num {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
      color: #ffffff;
      font-weight: 800;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      font-size: 16px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* FAQ Accordion */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-item.active {
      border-color: #c7d2fe;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed var(--border);
      padding-top: 14px;
    }

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

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

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

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #c7d2fe 0%, #fbcfe8 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .user-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info p {
      font-size: 12px;
      color: var(--text-sub);
    }

    .testimonial-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .testimonial-rating {
      color: #f59e0b;
      margin-top: 12px;
      font-size: 13px;
    }

    /* Form Section */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

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

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

    .form-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      background: #f8fafc;
      color: var(--text-main);
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* Articles / Dynamic Section */
    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: var(--text-muted);
      text-decoration: none;
      font-size: 14px;
      padding: 10px 14px;
      border-radius: 6px;
      background: #f8fafc;
      transition: all 0.2s ease;
    }

    .article-item a:hover {
      background: #eef2ff;
      color: var(--primary);
    }

    /* Contact & Social Section */
    .contact-card-group {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .contact-box {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .contact-box .qr-wrap {
      max-width: 150px;
      margin: 0 auto 16px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--border);
      padding: 6px;
      background: #ffffff;
    }

    .contact-box .qr-wrap img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* Footer */
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border);
      padding: 48px 0 28px;
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a {
      color: var(--text-sub);
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

    .friend-links a {
      color: var(--text-sub);
      text-decoration: none;
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
      transition: all 0.2s ease;
    }

    .friend-links a:hover {
      background: #eef2ff;
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-sub);
    }

    /* Floating Widget */
    .float-panel {
      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: #ffffff;
      border: 1px solid var(--border);
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      text-decoration: none;
      font-size: 18px;
      transition: all 0.2s ease;
    }

    .float-btn:hover {
      color: var(--primary);
      border-color: #c7d2fe;
      transform: translateY(-2px);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-4, .hero-features-bar, .steps-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .contact-card-group {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 16px 0;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px 20px;
      }
      .menu-toggle {
        display: block;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 28px;
      }
      .grid-2, .grid-3, .grid-4, .hero-features-bar, .steps-list {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .score-card-top {
        flex-direction: column;
        text-align: center;
      }
    }