:root {
      --bg-main: #f8fafc;
      --bg-alt: #f1f5f9;
      --card-bg: #ffffff;
      --card-border: rgba(14, 165, 233, 0.18);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --accent-cyan: #06b6d4;
      --accent-indigo: #6366f1;
      --accent-pink: #ec4899;
      --accent-green: #10b981;
      --neon-glow: 0 0 20px rgba(6, 182, 212, 0.25), 0 0 40px rgba(99, 102, 241, 0.15);
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --radius: 16px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      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;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(6, 182, 212, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 90% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 50%);
      background-attachment: fixed;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(6, 182, 212, 0.15);
      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 {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .brand-logo-wrap {
      max-height: 42px;
      display: flex;
      align-items: center;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-title span {
      color: var(--accent-cyan);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-size: 0.92rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: 8px;
      transition: var(--transition);
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--accent-cyan);
      background: rgba(6, 182, 212, 0.06);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
      color: #ffffff;
      font-size: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      border-radius: 999px;
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.35);
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }
    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
      color: #ffffff;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: #ffffff;
      color: var(--text-main);
      font-size: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      border-radius: 999px;
      border: 1px solid rgba(6, 182, 212, 0.4);
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(6, 182, 212, 0.05);
      border-color: var(--accent-indigo);
      color: var(--accent-indigo);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .nav-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    .hero-section {
      padding: 90px 0 60px;
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(6, 182, 212, 0.1);
      border: 1px solid rgba(6, 182, 212, 0.3);
      border-radius: 999px;
      color: var(--accent-cyan);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-cyan);
    }
    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3.2rem);
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
      color: var(--text-main);
    }
    .text-glow {
      color: var(--accent-cyan);
      position: relative;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
    }
    .hero-buttons {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 980px;
      margin: 0 auto;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius);
      border: 1px solid rgba(6, 182, 212, 0.15);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--neon-glow);
      border-color: rgba(6, 182, 212, 0.4);
    }
    .stat-value {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .section-wrap {
      padding: 80px 0;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent-cyan);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
    }

    .model-marquee {
      background: #ffffff;
      padding: 30px 0;
      border-top: 1px solid rgba(6, 182, 212, 0.12);
      border-bottom: 1px solid rgba(6, 182, 212, 0.12);
      box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    }
    .marquee-title {
      text-align: center;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 20px;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-chip {
      padding: 6px 14px;
      background: #f8fafc;
      border: 1px solid rgba(14, 165, 233, 0.15);
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: rgba(6, 182, 212, 0.1);
      color: var(--accent-cyan);
      border-color: var(--accent-cyan);
      transform: scale(1.05);
    }

    .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: #ffffff;
      padding: 28px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--neon-glow);
      border-color: var(--accent-cyan);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(99, 102, 241, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--accent-indigo);
      font-weight: 800;
      font-size: 1.25rem;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--neon-glow);
    }
    .media-img-wrap {
      width: 100%;
      overflow: hidden;
      aspect-ratio: 16/9;
      background: #e2e8f0;
    }
    .media-img-wrap.square {
      aspect-ratio: 1/1;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.5s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.04);
    }
    .media-body {
      padding: 24px;
    }
    .media-body h3 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .media-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .rating-banner {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
      border: 1px solid rgba(6, 182, 212, 0.25);
      border-radius: var(--radius);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-num {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent-indigo);
      line-height: 1;
    }
    .stars {
      color: #f59e0b;
      font-size: 1.4rem;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 20px;
      font-size: 0.92rem;
      border-bottom: 1px solid #f1f5f9;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:hover {
      background: rgba(6, 182, 212, 0.02);
    }
    .highlight-col {
      background: rgba(6, 182, 212, 0.04);
      font-weight: 600;
      color: var(--accent-indigo);
    }
    .badge-check {
      color: var(--accent-green);
      font-weight: 800;
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(6, 182, 212, 0.18);
      position: absolute;
      top: 16px;
      right: 20px;
    }
    .process-card h3 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .process-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .faq-question {
      padding: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      user-select: none;
      transition: var(--transition);
    }
    .faq-question:hover {
      color: var(--accent-cyan);
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--text-light);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-cyan);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 20px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      padding-bottom: 20px;
    }

    .testimonial-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .t-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .t-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .t-meta h4 {
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .t-meta span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .t-comment {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .form-box {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border-radius: 8px;
      border: 1px solid #cbd5e1;
      font-size: 0.92rem;
      color: var(--text-main);
      background: #f8fafc;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent-cyan);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 16px;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--card-border);
    }
    .contact-qr-wrap {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 20px;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      text-align: center;
    }
    .qr-container {
      width: 140px;
      height: 140px;
      margin-bottom: 10px;
    }
    .qr-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .article-card {
      background: #ffffff;
      padding: 20px;
      border-radius: 12px;
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-card h3 {
      font-size: 1.05rem;
      margin-bottom: 10px;
    }
    .article-card a {
      color: var(--text-main);
      text-decoration: none;
      transition: var(--transition);
    }
    .article-card a:hover {
      color: var(--accent-cyan);
    }
    .article-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-top: 12px;
    }

    footer {
      background: #ffffff;
      border-top: 1px solid rgba(6, 182, 212, 0.15);
      padding: 50px 0 30px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-brand p {
      font-size: 0.88rem;
      margin: 12px 0 20px;
      color: var(--text-light);
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.88rem;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .friend-links-box {
      padding-top: 24px;
      border-top: 1px solid #f1f5f9;
      margin-bottom: 24px;
    }
    .friend-links-box h5 {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links-list a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.82rem;
      padding: 4px 10px;
      background: #f8fafc;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }
    .friend-links-list a:hover {
      color: var(--accent-cyan);
      border-color: var(--accent-cyan);
    }
    .footer-bottom {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid #f1f5f9;
      font-size: 0.82rem;
      color: var(--text-light);
    }

    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 15px rgba(0,0,0,0.12);
      border: 1px solid var(--card-border);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      text-decoration: none;
      color: var(--accent-indigo);
      font-weight: 700;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--accent-cyan);
      color: #ffffff;
      transform: scale(1.1);
    }
    .back-top {
      display: none;
    }

    @media (max-width: 992px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 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: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--card-border);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .grid-3, .grid-4, .grid-2, .process-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-section {
        padding: 50px 0 40px;
      }
    }