:root {
      --primary: #FF5500;
      --primary-hover: #E04800;
      --primary-light: #FFF2E8;
      --primary-glow: rgba(255, 85, 0, 0.15);
      --secondary: #FA8C16;
      --accent: #FF7A45;
      --dark-title: #1E242B;
      --dark-body: #4A5568;
      --dark-muted: #718096;
      --bg-main: #FDFEFE;
      --bg-subtle: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-color: #EAEFF4;
      --border-focus: #FFA366;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(255, 85, 0, 0.08);
      --shadow-lg: 0 16px 36px rgba(30, 36, 43, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 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, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-subtle);
      color: var(--dark-body);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    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-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-logo-wrap {
      max-height: 44px;
      display: flex;
      align-items: center;
    }

    .brand-logo-wrap img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-title);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 4px;
      font-weight: 600;
      margin-left: 4px;
    }

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

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

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 85, 0, 0.4);
      color: #FFFFFF;
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--dark-title);
      border-color: var(--border-color);
    }

    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    .mobile-menu-toggle {
      display: none;
      flex-direction: column;
      justify-content: space-between;
      width: 26px;
      height: 20px;
      background: none;
      border: none;
      cursor: pointer;
    }

    .mobile-menu-toggle span {
      display: block;
      height: 2.5px;
      width: 100%;
      background: var(--dark-title);
      border-radius: 2px;
      transition: all 0.3s;
    }

    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 122, 69, 0.12), transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(250, 140, 22, 0.1), transparent 40%),
                  #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 80px 0 60px;
      position: relative;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: var(--primary-light);
      border: 1px solid var(--border-focus);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--dark-title);
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-title .highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.18rem;
      color: var(--dark-body);
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .btn-hero-cta {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: 10px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding: 30px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
    }

    .stat-item {
      text-align: center;
      border-right: 1px solid var(--border-color);
      padding: 0 10px;
    }

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

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--dark-muted);
      font-weight: 500;
    }

    .section-block {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-block:nth-child(even) {
      background-color: #FFFFFF;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 16px;
      line-height: 1.3;
    }

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

    .about-card-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .about-text-content {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .about-text-content p {
      font-size: 1.02rem;
      color: var(--dark-body);
      line-height: 1.8;
    }

    .about-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 10px;
    }

    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 600;
      color: var(--dark-title);
      font-size: 0.95rem;
    }

    .feature-icon-bullet {
      width: 20px;
      height: 20px;
      background: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
    }

    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 26px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .model-pill {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      padding: 8px 14px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark-title);
      transition: all 0.2s ease;
    }

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

    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .service-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .card-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .card-title {
      font-size: 1.22rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 0.94rem;
      color: var(--dark-body);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .card-tag {
      font-size: 0.78rem;
      padding: 3px 8px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      color: var(--dark-muted);
    }

    .score-banner {
      background: linear-gradient(135deg, #1E242B 0%, #2D3748 100%);
      color: #FFFFFF;
      padding: 36px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 36px;
      box-shadow: var(--shadow-lg);
    }

    .score-left h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 8px;
    }

    .score-left p {
      color: #A0AEC0;
      font-size: 0.95rem;
    }

    .score-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-val {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-stars {
      color: #FFB800;
      font-size: 1.5rem;
      letter-spacing: 2px;
    }

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

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

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

    .custom-table th {
      background: var(--bg-subtle);
      font-weight: 700;
      color: var(--dark-title);
    }

    .custom-table tr:last-child td {
      border-bottom: none;
    }

    .custom-table td.highlight-col {
      background: rgba(255, 85, 0, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .step-num {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary);
      opacity: 0.3;
      position: absolute;
      top: 14px;
      right: 18px;
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 10px;
    }

    .step-desc {
      font-size: 0.9rem;
      color: var(--dark-body);
      line-height: 1.6;
    }

    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-gallery-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #E2E8F0;
    }

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

    .case-gallery-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 20px;
      flex-grow: 1;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.9rem;
      color: var(--dark-body);
      line-height: 1.6;
    }

    .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-content {
      font-size: 0.94rem;
      color: var(--dark-body);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .user-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
    }

    .user-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-title);
    }

    .user-meta p {
      font-size: 0.82rem;
      color: var(--dark-muted);
    }

    .form-layout-wrap {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group label {
      display: block;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--dark-title);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 0.95rem;
      color: var(--dark-title);
      background: var(--bg-subtle);
      transition: all 0.25s ease;
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

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

    .contact-info-panel {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-info-panel h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--dark-title);
    }

    .contact-list-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--dark-body);
    }

    .contact-icon {
      color: var(--primary);
      font-weight: bold;
      min-width: 20px;
    }

    .qr-box-wrap {
      margin-top: 10px;
      padding: 16px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      width: fit-content;
    }

    .qr-box-wrap img {
      max-width: 130px;
      height: auto;
      border-radius: 4px;
    }

    .qr-box-wrap span {
      font-size: 0.82rem;
      color: var(--dark-muted);
      font-weight: 500;
    }

    .faq-accordion-box {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .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(--border-focus);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-title);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

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

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

    .articles-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .article-card-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 10px;
      transition: all 0.25s ease;
    }

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

    .article-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--dark-title);
    }

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

    .article-summary {
      font-size: 0.9rem;
      color: var(--dark-muted);
      line-height: 1.6;
    }

    .article-meta-bar {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--dark-muted);
      margin-top: 6px;
    }

    .footer-section {
      background: #1A1F26;
      color: #A0AEC0;
      padding: 60px 0 30px;
      border-top: 1px solid #2D3748;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 14px;
    }

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

    .footer-links li a {
      color: #A0AEC0;
      font-size: 0.9rem;
    }

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

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

    .friendship-links-wrap a {
      font-size: 0.85rem;
      color: #CBD5E0;
      background: #242B35;
      padding: 4px 10px;
      border-radius: 4px;
    }

    .friendship-links-wrap a:hover {
      color: #FFFFFF;
      background: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #2D3748;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
    }

    .footer-bottom a {
      color: #A0AEC0;
    }

    .footer-bottom a:hover {
      color: #FFFFFF;
    }

    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: #FFFFFF;
      border-radius: 50%;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--dark-title);
      cursor: pointer;
      transition: all 0.25s ease;
      font-size: 1.1rem;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
      transform: scale(1.08);
    }

    .float-qr-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #FFFFFF;
      padding: 14px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 140px;
      text-align: center;
    }

    .float-btn-kefu:hover .float-qr-popover {
      display: flex;
    }

    .float-qr-popover img {
      width: 100%;
      height: auto;
      border-radius: 4px;
    }

    .float-qr-popover span {
      font-size: 0.78rem;
      color: var(--dark-title);
      margin-top: 6px;
      font-weight: 600;
    }

    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .stat-item {
        border-right: none;
      }
      .cards-grid-3, .cards-grid-4, .case-gallery-grid, .reviews-grid, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-card-box, .form-layout-wrap, .articles-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-toggle {
        display: flex;
      }
      .mobile-menu-active .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .mobile-menu-active .nav-links li {
        width: 100%;
      }
      .mobile-menu-active .nav-links li a {
        width: 100%;
        padding: 10px 16px;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.8rem;
      }
      .cards-grid-3, .cards-grid-4, .case-gallery-grid, .reviews-grid, .process-timeline {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .score-right {
        flex-direction: column;
      }
      .form-layout-wrap {
        padding: 20px;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
    }