:root {
      --primary: #2563eb;
      --accent: #ff4d4f;
      --warning: #f59e0b;
      --success: #10b981;
      --purple: #7c3aed;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --max-width: 1240px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    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: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid #e0e7ff;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap img {
      max-height: 44px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      padding: 8px 12px;
      border-radius: 6px;
      display: block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: #eff6ff;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #2563eb, #1d4ed8);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }
    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }
    .menu-toggle span {
      width: 24px;
      height: 3px;
      background: #1e293b;
      border-radius: 2px;
    }
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 10% 20%, #e0e7ff 0%, #f8fafc 40%),
                  radial-gradient(circle at 90% 80%, #ffedd5 0%, #f8fafc 50%);
      padding: 80px 0 70px;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-layout {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fee2e2;
      border: 1px solid #fecaca;
      color: #dc2626;
      font-size: 13px;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title .highlight-blue {
      color: #2563eb;
      background: linear-gradient(135deg, #2563eb, #7c3aed);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-title .highlight-accent {
      color: #ea580c;
    }
    .hero-desc {
      font-size: 18px;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-hero-official {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 15px 36px;
      font-size: 17px;
      font-weight: 800;
      color: #ffffff;
      background: linear-gradient(135deg, #ff4d4f 0%, #ea580c 100%);
      border-radius: 10px;
      box-shadow: 0 10px 25px rgba(234, 88, 12, 0.35);
      border: 2px solid #ffedd5;
    }
    .btn-hero-official:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 12px 28px rgba(234, 88, 12, 0.45);
    }
    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 15px 32px;
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      background: #ffffff;
      border: 2px solid #cbd5e1;
      border-radius: 10px;
    }
    .btn-hero-secondary:hover {
      background: #f1f5f9;
      border-color: #94a3b8;
    }
    .hero-badges-row {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }
    .model-chip {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    }
    .model-chip.highlight {
      background: #eff6ff;
      border-color: #bfdbfe;
      color: #1d4ed8;
    }
    .stats-bar {
      margin-top: 50px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 28px;
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
      border: 1px solid #e2e8f0;
    }
    .stat-item {
      text-align: center;
      border-right: 1px solid #f1f5f9;
    }
    .stat-item:last-child {
      border-right: none;
    }
    .stat-num {
      font-size: 32px;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .stat-num span {
      font-size: 18px;
      color: #2563eb;
    }
    .stat-label {
      font-size: 13px;
      color: #64748b;
      font-weight: 500;
    }
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: #f1f5f9;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
      padding: 5px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
      background: #e0e7ff;
      color: #3730a3;
    }
    .section-header h2 {
      font-size: 32px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-header p {
      font-size: 16px;
      color: #64748b;
      line-height: 1.6;
    }
    .about-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .about-card {
      background: #ffffff;
      padding: 32px;
      border-radius: 14px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .about-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    }
    .about-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 20px;
      color: #ffffff;
    }
    .bg-gradient-blue { background: linear-gradient(135deg, #2563eb, #38bdf8); }
    .bg-gradient-orange { background: linear-gradient(135deg, #ea580c, #f59e0b); }
    .bg-gradient-purple { background: linear-gradient(135deg, #7c3aed, #c084fc); }
    .about-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }
    .about-card p {
      font-size: 14px;
      color: #64748b;
      line-height: 1.7;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .service-card:hover {
      border-color: #2563eb;
      box-shadow: 0 8px 20px rgba(37, 99, 235, 0.08);
      transform: translateY(-3px);
    }
    .service-tag {
      font-size: 11px;
      font-weight: 700;
      color: #2563eb;
      background: #eff6ff;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
      width: fit-content;
    }
    .service-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .service-card p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .service-feature {
      font-size: 12px;
      font-weight: 600;
      color: #059669;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 28px 20px;
      text-align: center;
      position: relative;
    }
    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #2563eb;
      color: #ffffff;
      font-size: 18px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
    }
    .step-box h3 {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .step-box p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
    }
    .compare-container {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
      overflow: hidden;
      box-shadow: 0 10px 25px rgba(0,0,0,0.03);
    }
    .compare-score-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      padding: 28px 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left h3 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .score-left p {
      font-size: 14px;
      color: #94a3b8;
    }
    .score-badge {
      display: flex;
      align-items: baseline;
      gap: 6px;
      background: rgba(255, 255, 255, 0.1);
      padding: 8px 20px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .score-num {
      font-size: 36px;
      font-weight: 900;
      color: #fbbf24;
    }
    .score-max {
      font-size: 14px;
      color: #cbd5e1;
    }
    .stars-view {
      color: #fbbf24;
      font-size: 16px;
      margin-left: 6px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 24px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #334155;
    }
    .compare-table td.brand-col {
      font-weight: 700;
      color: #2563eb;
      background: #eff6ff;
    }
    .compare-table tr:hover td {
      background: #f8fafc;
    }
    .compare-table tr:hover td.brand-col {
      background: #e0e7ff;
    }
    .tag-strong {
      display: inline-block;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
      background: #dcfce7;
      color: #15803d;
    }
    .tag-weak {
      display: inline-block;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 600;
      background: #fee2e2;
      color: #b91c1c;
    }
    .gallery-showcase {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .gallery-large {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .media-card {
      background: #ffffff;
      border-radius: 14px;
      border: 1px solid #e2e8f0;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    }
    .media-card img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .media-content {
      padding: 20px;
    }
    .media-content h4 {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .media-content p {
      font-size: 13px;
      color: #64748b;
    }
    .banners-stack {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .banner-item {
      border-radius: 10px;
      overflow: hidden;
      border: 1px solid #e2e8f0;
      background: #ffffff;
    }
    .banner-item img {
      width: 100%;
      height: auto;
      display: block;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      border-radius: 12px;
      padding: 24px;
      border: 1px solid #e2e8f0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #2563eb;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .user-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
    }
    .user-info span {
      font-size: 12px;
      color: #64748b;
    }
    .review-text {
      font-size: 13px;
      color: #475569;
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }
    .review-tag {
      font-size: 11px;
      font-weight: 600;
      color: #2563eb;
      background: #eff6ff;
      padding: 4px 10px;
      border-radius: 4px;
      width: fit-content;
    }
    .faq-accordion {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item.active {
      border-color: #2563eb;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
    }
    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 15px;
      color: #0f172a;
      user-select: none;
    }
    .faq-icon {
      font-size: 18px;
      color: #64748b;
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: #2563eb;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 20px;
      border-top: 1px solid #f1f5f9;
    }
    .faq-answer p {
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
    }
    .form-contact-wrap {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0,0,0,0.04);
    }
    .form-box {
      padding: 40px;
    }
    .form-box h3 {
      font-size: 22px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .form-box p {
      font-size: 14px;
      color: #64748b;
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      color: #1e293b;
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: #2563eb;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #2563eb, #1d4ed8);
      border: none;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
    }
    .form-submit-btn:hover {
      background: linear-gradient(135deg, #1d4ed8, #1e40af);
    }
    .contact-info-box {
      background: #f8fafc;
      padding: 40px;
      border-left: 1px solid #e2e8f0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-block h4 {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
    }
    .contact-items {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 24px;
      font-size: 14px;
      color: #475569;
    }
    .contact-items strong {
      color: #0f172a;
      margin-right: 6px;
    }
    .qrcode-panel {
      text-align: center;
      padding: 20px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
    }
    .qrcode-panel img {
      max-width: 130px;
      height: auto;
      display: block;
      margin: 0 auto 10px;
      border-radius: 6px;
    }
    .qrcode-panel span {
      font-size: 12px;
      color: #64748b;
      font-weight: 600;
    }
    .article-section {
      background: #ffffff;
      border-radius: 14px;
      border: 1px solid #e2e8f0;
      padding: 28px;
      margin-top: 32px;
    }
    .article-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }
    .article-link-item {
      background: #f1f5f9;
      color: #2563eb;
      font-size: 13px;
      padding: 6px 14px;
      border-radius: 6px;
      font-weight: 500;
    }
    .article-link-item:hover {
      background: #e0e7ff;
    }
    .footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px;
      border-top: 4px solid #2563eb;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #94a3b8;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-nav {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-nav li a {
      font-size: 13px;
      color: #94a3b8;
    }
    .footer-nav li a:hover {
      color: #ffffff;
    }
    .footer-friend-links {
      padding: 24px 0;
      border-top: 1px solid #1e293b;
      border-bottom: 1px solid #1e293b;
      margin-bottom: 24px;
    }
    .friend-links-title {
      font-size: 13px;
      font-weight: 700;
      color: #94a3b8;
      margin-bottom: 10px;
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 18px;
    }
    .friend-links-wrap a {
      font-size: 13px;
      color: #cbd5e1;
    }
    .friend-links-wrap a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #64748b;
    }
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #2563eb;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      border: 2px solid #ffffff;
      cursor: pointer;
    }
    .float-btn.official {
      background: #ea580c;
    }
    @media (max-width: 1024px) {
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: repeat(2, 1fr); }
      .gallery-showcase { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .menu-toggle { display: flex; }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid #e2e8f0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links li a { padding: 10px 0; }
      .hero-title { font-size: 28px; }
      .hero-desc { font-size: 15px; }
      .stats-bar { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: 1fr; }
      .about-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .form-contact-wrap { grid-template-columns: 1fr; }
      .contact-info-box { border-left: none; border-top: 1px solid #e2e8f0; }
      .footer-top { grid-template-columns: 1fr; }
      .banners-stack { grid-template-columns: 1fr; }
    }