* { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      background: #faf8ff;
      color: #1e1b2e;
      line-height: 1.65;
      overflow-x: hidden;
    }
    :root {
      --primary: #7c3aed;
      --primary-light: #a78bfa;
      --primary-dark: #5b21b6;
      --accent: #c084fc;
      --bg-soft: #f5f0ff;
      --bg-card: #ffffff;
      --text-main: #1e1b2e;
      --text-sub: #5b5470;
      --border-soft: #e9e2f5;
      --radius: 18px;
      --radius-sm: 12px;
      --shadow-sm: 0 2px 12px rgba(124, 58, 237, 0.06);
      --shadow-md: 0 8px 30px rgba(124, 58, 237, 0.10);
      --shadow-lg: 0 20px 50px rgba(124, 58, 237, 0.14);
    }
    .container {
      width: 100%;
      max-width: 1180px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-soft);
      transition: box-shadow 0.3s ease;
    }
    .site-header.scrolled {
      box-shadow: var(--shadow-sm);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 68px;
      gap: 16px;
      flex-wrap: wrap;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      flex-shrink: 0;
    }
    .brand img {
      height: 36px;
      width: auto;
      max-width: 120px;
      object-fit: contain;
    }
    .brand-name {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
      flex-wrap: wrap;
    }
    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 0.9rem;
      color: var(--text-sub);
      text-decoration: none;
      border-radius: 8px;
      transition: color 0.2s, background 0.2s;
      white-space: nowrap;
    }
    .nav-links li a:hover {
      color: var(--primary-dark);
      background: var(--bg-soft);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 40px;
      text-decoration: none;
      transition: transform 0.2s, box-shadow 0.2s;
      flex-shrink: 0;
    }
    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-soft);
      border-radius: 8px;
      padding: 6px 10px;
      font-size: 1.3rem;
      color: var(--text-main);
      cursor: pointer;
      line-height: 1;
    }
    /* Hero */
    .hero {
      position: relative;
      padding: 80px 0 70px;
      background: linear-gradient(160deg, #f8f4ff 0%, #ede4ff 40%, #f5f0ff 100%);
      overflow: hidden;
      text-align: center;
    }
    .hero::before {
      content: "";
      position: absolute;
      width: 600px;
      height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(167, 139, 250, 0.25) 0%, transparent 70%);
      top: -200px;
      right: -150px;
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(192, 132, 252, 0.18) 0%, transparent 70%);
      bottom: -120px;
      left: -100px;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 820px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 18px;
      background: rgba(124, 58, 237, 0.10);
      color: var(--primary-dark);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 40px;
      margin-bottom: 22px;
      border: 1px solid rgba(124, 58, 237, 0.18);
    }
    .hero h1 {
      font-size: clamp(2rem, 4.5vw, 3.1rem);
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }
    .hero h1 em {
      font-style: normal;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-desc {
      font-size: 1.08rem;
      color: var(--text-sub);
      max-width: 640px;
      margin: 0 auto 30px;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 40px;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      border-radius: 50px;
      text-decoration: none;
      border: none;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.25s;
      box-shadow: 0 6px 24px rgba(124, 58, 237, 0.30);
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 32px rgba(124, 58, 237, 0.40);
    }
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: #fff;
      color: var(--primary-dark);
      font-size: 1rem;
      font-weight: 600;
      border-radius: 50px;
      text-decoration: none;
      border: 1.5px solid var(--border-soft);
      transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    }
    .btn-ghost:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
    }
    .stat-card {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(124, 58, 237, 0.12);
      border-radius: var(--radius-sm);
      padding: 20px 12px;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .stat-value {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 0.82rem;
      color: var(--text-sub);
      margin-top: 4px;
    }
    /* Section common */
    .section {
      padding: 72px 0;
    }
    .section-alt {
      background: linear-gradient(180deg, #faf8ff 0%, #f3edff 100%);
    }
    .section-header {
      text-align: center;
      margin-bottom: 44px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 1.5px;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .section-header h2 {
      font-size: clamp(1.6rem, 3vw, 2.2rem);
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .section-header p {
      font-size: 0.98rem;
      color: var(--text-sub);
      max-width: 620px;
      margin: 0 auto;
    }
    /* Card grids */
    .card-grid {
      display: grid;
      gap: 22px;
    }
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-2 {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius);
      padding: 28px 24px;
      transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(124, 58, 237, 0.18);
    }
    .card-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.10), rgba(192, 132, 252, 0.14));
      font-size: 1.4rem;
      margin-bottom: 16px;
    }
    .card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.7;
    }
    /* Steps */
    .steps-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-item {
      position: relative;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius);
      padding: 28px 22px 24px;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }
    .step-item h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .step-item p {
      font-size: 0.85rem;
      color: var(--text-sub);
    }
    /* Compare table */
    .compare-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius);
      border: 1px solid var(--border-soft);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      min-width: 680px;
      border-collapse: collapse;
      font-size: 0.9rem;
    }
    .compare-table thead {
      background: linear-gradient(135deg, #f3edff, #ede4ff);
    }
    .compare-table th {
      padding: 16px 18px;
      text-align: left;
      font-weight: 700;
      color: var(--primary-dark);
      border-bottom: 1px solid var(--border-soft);
    }
    .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-soft);
      color: var(--text-sub);
    }
    .compare-table tbody tr:last-child td {
      border-bottom: none;
    }
    .compare-table tbody tr:hover {
      background: #faf8ff;
    }
    .rate-stars {
      color: #f59e0b;
      letter-spacing: 2px;
      font-size: 1rem;
    }
    .score-badge {
      display: inline-block;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 30px;
      font-size: 0.9rem;
    }
    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow 0.2s;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--text-main);
      text-align: left;
      cursor: pointer;
      font-family: inherit;
    }
    .faq-question .faq-arrow {
      font-size: 1.1rem;
      color: var(--primary);
      transition: transform 0.25s;
      flex-shrink: 0;
    }
    .faq-item.open .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
      padding: 0 22px;
      font-size: 0.9rem;
      color: var(--text-sub);
      background: #fdfcff;
    }
    .faq-item.open .faq-answer {
      max-height: 320px;
      padding: 0 22px 18px;
    }
    /* Reviews */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .review-card {
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius);
      padding: 26px 22px;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .review-stars {
      color: #f59e0b;
      font-size: 0.95rem;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.75;
      margin-bottom: 16px;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-light), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .review-name {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-role {
      font-size: 0.78rem;
      color: var(--text-sub);
    }
    /* Image gallery */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .gallery-item {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-soft);
      background: #fff;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .gallery-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .gallery-item img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: contain;
    }
    .gallery-caption {
      padding: 12px 16px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      background: #fff;
    }
    /* Articles */
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .article-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 16px 18px;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    }
    .article-item:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .article-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      margin-top: 7px;
      flex-shrink: 0;
    }
    .article-title {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.5;
    }
    /* Form */
    .form-wrap {
      max-width: 720px;
      margin: 0 auto;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius);
      padding: 36px 32px;
      box-shadow: var(--shadow-sm);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: 1 / -1;
    }
    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 12px 14px;
      border: 1px solid var(--border-soft);
      border-radius: 10px;
      font-size: 0.92rem;
      font-family: inherit;
      color: var(--text-main);
      background: #fdfcff;
      transition: border-color 0.2s, box-shadow 0.2s;
      width: 100%;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary-light);
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.10);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit {
      margin-top: 8px;
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
      font-family: inherit;
    }
    .form-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(124, 58, 237, 0.35);
    }
    /* Contact / QR */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: start;
    }
    .contact-info {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      padding: 16px 18px;
    }
    .contact-item-icon {
      font-size: 1.2rem;
      margin-top: 2px;
    }
    .contact-item-label {
      font-size: 0.8rem;
      color: var(--text-sub);
      margin-bottom: 2px;
    }
    .contact-item-value {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      word-break: break-all;
    }
    .qr-box {
      text-align: center;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius);
      padding: 24px;
    }
    .qr-box img {
      width: 180px;
      height: 180px;
      object-fit: contain;
      border-radius: 12px;
      border: 1px solid var(--border-soft);
    }
    .qr-box p {
      margin-top: 12px;
      font-size: 0.85rem;
      color: var(--text-sub);
    }
    /* Tags */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .tag-item {
      display: inline-block;
      padding: 7px 18px;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: 40px;
      font-size: 0.85rem;
      color: var(--text-sub);
      transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
    }
    .tag-item:hover {
      background: var(--bg-soft);
      color: var(--primary-dark);
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }
    /* Friend links */
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      justify-content: center;
    }
    .friend-links a {
      font-size: 0.85rem;
      color: var(--text-sub);
      text-decoration: none;
      padding: 4px 0;
      border-bottom: 1px dashed transparent;
      transition: color 0.2s, border-color 0.2s;
    }
    .friend-links a:hover {
      color: var(--primary-dark);
      border-bottom-color: var(--primary-light);
    }
    /* Footer */
    .site-footer {
      background: #1e1b2e;
      color: #c9c2e0;
      padding: 44px 0 24px;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 30px;
    }
    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-brand strong {
      font-size: 1.1rem;
      color: #fff;
    }
    .footer-brand p {
      font-size: 0.85rem;
      color: #a9a2c4;
      line-height: 1.7;
      max-width: 340px;
    }
    .footer-col h4 {
      font-size: 0.9rem;
      color: #fff;
      margin-bottom: 12px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul li a {
      font-size: 0.84rem;
      color: #a9a2c4;
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-col ul li a:hover {
      color: #d8c8ff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.10);
      padding-top: 18px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-size: 0.8rem;
      color: #8a82a8;
    }
    /* Floating elements */
    .back-top {
      position: fixed;
      right: 22px;
      bottom: 100px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      border: none;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(124, 58, 237, 0.30);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
      z-index: 900;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .back-top.visible {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .float-kefu {
      position: fixed;
      right: 22px;
      bottom: 36px;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
      z-index: 900;
      border: none;
      font-size: 1.3rem;
      transition: transform 0.2s;
    }
    .float-kefu:hover {
      transform: scale(1.08);
    }
    .kefu-popup {
      position: fixed;
      right: 86px;
      bottom: 36px;
      width: 220px;
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      padding: 18px;
      box-shadow: var(--shadow-lg);
      z-index: 901;
      opacity: 0;
      visibility: hidden;
      transform: translateX(10px);
      transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
      text-align: center;
    }
    .kefu-popup.show {
      opacity: 1;
      visibility: visible;
      transform: translateX(0);
    }
    .kefu-popup img {
      width: 150px;
      height: 150px;
      object-fit: contain;
      border-radius: 10px;
      border: 1px solid var(--border-soft);
    }
    .kefu-popup p {
      font-size: 0.8rem;
      color: var(--text-sub);
      margin-top: 10px;
    }
    /* Reveal animation */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* Responsive */
    @media (max-width: 1024px) {
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
    }
    @media (max-width: 900px) {
      .nav-links { display: none; }
      .menu-toggle { display: block; }
      .nav-links.open {
        display: flex;
        flex-direction: column;
        width: 100%;
        padding: 10px 0 6px;
        order: 5;
        gap: 2px;
        border-top: 1px solid var(--border-soft);
        margin-top: 6px;
      }
      .nav-links.open li a {
        padding: 10px 12px;
        font-size: 0.92rem;
      }
      .nav-wrap { flex-wrap: wrap; }
      .steps-list { grid-template-columns: repeat(2, 1fr); }
      .gallery-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 720px) {
      .grid-3, .grid-2 { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .steps-list { grid-template-columns: 1fr; }
      .gallery-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .hero { padding: 60px 0 50px; }
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
      .section { padding: 52px 0; }
      .float-kefu { right: 16px; bottom: 28px; width: 46px; height: 46px; font-size: 1.1rem; }
      .kefu-popup { right: 70px; bottom: 28px; width: 190px; }
      .kefu-popup img { width: 130px; height: 130px; }
      .back-top { right: 16px; bottom: 84px; width: 40px; height: 40px; }
    }
    @media (max-width: 480px) {
      .container { padding: 0 16px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .btn-primary, .btn-ghost { justify-content: center; }
      .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
      .stat-value { font-size: 1.4rem; }
      .form-wrap { padding: 24px 18px; }
      .compare-table { font-size: 0.82rem; }
      .compare-table th, .compare-table td { padding: 12px 14px; }
    }