* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --pink-primary: #e83e8c;
      --pink-light: #fde8f0;
      --pink-deep: #b02a6b;
      --pink-soft: #fff0f7;
      --text-dark: #1a1a2e;
      --text-gray: #4a4a5a;
      --text-light: #6b6b7b;
      --bg-base: #fff5f9;
      --white: #ffffff;
      --shadow-sm: 0 2px 12px rgba(232, 62, 140, 0.08);
      --shadow-md: 0 8px 30px rgba(232, 62, 140, 0.12);
      --shadow-lg: 0 16px 48px rgba(232, 62, 140, 0.16);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --container: 1200px;
      --nav-height: 68px;
    }
    html {
      scroll-behavior: smooth;
      scroll-padding-top: 80px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-base);
      background-image: radial-gradient(ellipse at 20% 0%, rgba(232, 62, 140, 0.06) 0%, transparent 55%),
                        radial-gradient(ellipse at 90% 40%, rgba(232, 62, 140, 0.05) 0%, transparent 50%),
                        linear-gradient(180deg, #fff5f9 0%, #fffbfd 40%, #fff5f9 100%);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--pink-primary);
      text-decoration: none;
      transition: color 0.25s ease;
    }
    a:hover {
      color: var(--pink-deep);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    ul {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* Top Bar */
    .top-bar {
      background: linear-gradient(90deg, var(--pink-deep), var(--pink-primary));
      color: #fff;
      font-size: 13px;
      padding: 6px 0;
      overflow: hidden;
    }
    .top-bar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .top-bar a {
      color: #fff;
      opacity: 0.92;
      font-weight: 400;
    }
    .top-bar a:hover {
      opacity: 1;
      color: #fff;
      text-decoration: underline;
    }
    .top-bar-left {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .top-bar-right {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      opacity: 0.85;
    }
    /* Header */
    .site-header {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(232, 62, 140, 0.1);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: var(--nav-height);
      gap: 16px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand .ai-page-logo {
      max-width: 130px;
      height: auto;
    }
    .brand-text {
      font-size: 18px;
      font-weight: 800;
      color: var(--pink-deep);
      letter-spacing: 1px;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      font-size: 14px;
      color: var(--text-dark);
      padding: 6px 10px;
      border-radius: 8px;
      font-weight: 500;
      white-space: nowrap;
      transition: background 0.2s, color 0.2s;
    }
    .nav-links a:hover {
      background: var(--pink-light);
      color: var(--pink-deep);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 10px 22px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
      white-space: nowrap;
      text-decoration: none;
      line-height: 1.4;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--pink-primary), #f06292);
      color: #fff;
      box-shadow: 0 4px 16px rgba(232, 62, 140, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 28px rgba(232, 62, 140, 0.45);
      color: #fff;
    }
    .btn-outline {
      background: transparent;
      color: var(--pink-primary);
      border: 1.5px solid var(--pink-primary);
    }
    .btn-outline:hover {
      background: var(--pink-light);
      color: var(--pink-deep);
      transform: translateY(-2px);
    }
    .btn-lg {
      padding: 14px 36px;
      font-size: 16px;
    }
    .btn-white {
      background: #fff;
      color: var(--pink-deep);
      box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    }
    .btn-white:hover {
      transform: translateY(-2px);
      color: var(--pink-deep);
      box-shadow: 0 8px 28px rgba(0,0,0,0.18);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2.5px;
      background: var(--text-dark);
      border-radius: 2px;
      transition: all 0.3s;
    }
    /* Hero */
    .hero {
      padding: 70px 0 60px;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      top: -120px;
      right: -80px;
      width: 480px;
      height: 480px;
      background: radial-gradient(circle, rgba(232, 62, 140, 0.10) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      bottom: -100px;
      left: -100px;
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(240, 98, 146, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--pink-light);
      color: var(--pink-deep);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 18px;
      border-radius: 50px;
      margin-bottom: 24px;
      border: 1px solid rgba(232, 62, 140, 0.18);
    }
    .hero-badge i {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--pink-primary);
      display: inline-block;
      animation: pulse-dot 1.8s ease-in-out infinite;
    }
    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.4); }
    }
    .hero h1 {
      font-size: clamp(28px, 4.2vw, 48px);
      font-weight: 800;
      line-height: 1.22;
      color: var(--text-dark);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero h1 .highlight {
      color: var(--pink-deep);
      position: relative;
    }
    .hero-sub {
      font-size: clamp(15px, 1.5vw, 18px);
      color: var(--text-gray);
      max-width: 720px;
      margin: 0 auto 30px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      max-width: 780px;
      margin: 0 auto;
    }
    .stat-card {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(232, 62, 140, 0.12);
      border-radius: var(--radius-md);
      padding: 18px 10px;
      text-align: center;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .stat-num {
      font-size: clamp(22px, 2.5vw, 30px);
      font-weight: 800;
      color: var(--pink-deep);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-light);
      margin-top: 4px;
    }
    /* Section Base */
    .section {
      padding: 70px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, rgba(255,255,255,0.65) 0%, rgba(255,245,249,0.9) 100%);
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 44px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--pink-primary);
      letter-spacing: 2px;
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .section-header h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 12px;
      line-height: 1.3;
    }
    .section-header p {
      font-size: 15px;
      color: var(--text-gray);
      line-height: 1.7;
    }
    /* Cards Grid */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 22px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid rgba(232, 62, 140, 0.08);
      box-shadow: var(--shadow-sm);
      transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.35s;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--pink-light), #fff0f7);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 22px;
      color: var(--pink-deep);
      flex-shrink: 0;
    }
    .card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .card p {
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.65;
      flex: 1;
    }
    /* About / Platform intro */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: start;
    }
    .about-text h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .about-text p {
      font-size: 15px;
      color: var(--text-gray);
      line-height: 1.8;
      margin-bottom: 14px;
    }
    .about-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 18px;
    }
    .about-list li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 14px;
      color: var(--text-dark);
      font-weight: 500;
    }
    .about-list li::before {
      content: "✓";
      color: var(--pink-primary);
      font-weight: 800;
      flex-shrink: 0;
      margin-top: 1px;
    }
    .about-visual {
      background: linear-gradient(135deg, var(--pink-soft), #fff);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      border: 1px solid rgba(232, 62, 140, 0.12);
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .about-visual .model-tag {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .model-tag span {
      display: inline-block;
      background: #fff;
      border: 1px solid rgba(232, 62, 140, 0.18);
      color: var(--pink-deep);
      font-size: 12px;
      font-weight: 600;
      padding: 5px 12px;
      border-radius: 50px;
      transition: background 0.2s, transform 0.2s;
    }
    .model-tag span:hover {
      background: var(--pink-light);
      transform: scale(1.05);
    }
    /* Steps */
    .steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-item {
      position: relative;
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 28px 22px 24px;
      border: 1px solid rgba(232, 62, 140, 0.08);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
      counter-increment: step;
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-item::before {
      content: "0" counter(step);
      display: block;
      font-size: 28px;
      font-weight: 800;
      color: rgba(232, 62, 140, 0.18);
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-item h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-dark);
    }
    .step-item p {
      font-size: 13px;
      color: var(--text-gray);
      line-height: 1.6;
    }
    /* Comparison table */
    .table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      background: #fff;
      -webkit-overflow-scrolling: touch;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
      font-size: 14px;
    }
    .compare-table thead {
      background: linear-gradient(135deg, var(--pink-deep), var(--pink-primary));
      color: #fff;
    }
    .compare-table th,
    .compare-table td {
      padding: 14px 18px;
      text-align: left;
      border-bottom: 1px solid #f3e1ea;
    }
    .compare-table th {
      font-weight: 700;
      font-size: 14px;
      white-space: nowrap;
    }
    .compare-table tbody tr:last-child td {
      border-bottom: none;
    }
    .compare-table tbody tr:hover {
      background: var(--pink-soft);
    }
    .compare-table .feature-col {
      font-weight: 600;
      color: var(--text-dark);
      white-space: nowrap;
    }
    .compare-table .highlight-cell {
      color: var(--pink-deep);
      font-weight: 700;
    }
    .rating-box {
      background: linear-gradient(135deg, #fff5f9, #ffe4ef);
      border: 1px solid rgba(232, 62, 140, 0.15);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      margin-bottom: 28px;
    }
    .rating-box .stars {
      color: #ffb400;
      font-size: 26px;
      letter-spacing: 4px;
      margin-bottom: 8px;
    }
    .rating-box .score {
      font-size: 38px;
      font-weight: 800;
      color: var(--pink-deep);
      line-height: 1;
    }
    .rating-box .score small {
      font-size: 18px;
      font-weight: 500;
      color: var(--text-light);
    }
    .rating-box .rating-desc {
      font-size: 14px;
      color: var(--text-gray);
      margin-top: 8px;
    }
    /* Reviews */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 24px 22px;
      border: 1px solid rgba(232, 62, 140, 0.08);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
      display: flex;
      flex-direction: column;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .review-stars {
      color: #ffb400;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 10px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.7;
      flex: 1;
      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(--pink-light), #f8bbd9);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
      color: var(--pink-deep);
      flex-shrink: 0;
    }
    .review-meta {
      font-size: 13px;
    }
    .review-meta strong {
      color: var(--text-dark);
      font-weight: 600;
      display: block;
    }
    .review-meta span {
      color: var(--text-light);
      font-size: 12px;
    }
    /* FAQ */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid rgba(232, 62, 140, 0.1);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow 0.25s;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      text-align: left;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-family: inherit;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: var(--pink-soft);
    }
    .faq-question .arrow {
      transition: transform 0.35s ease;
      color: var(--pink-primary);
      font-size: 18px;
      flex-shrink: 0;
      font-weight: 400;
    }
    .faq-item.active .faq-question .arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      padding: 0 20px;
      font-size: 14px;
      color: var(--text-gray);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 280px;
      padding: 0 20px 18px;
    }
    /* Article list */
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .article-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: var(--white);
      padding: 18px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(232, 62, 140, 0.08);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .article-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .article-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--pink-light);
      line-height: 1;
      flex-shrink: 0;
      min-width: 34px;
      text-align: center;
    }
    .article-body {
      flex: 1;
    }
    .article-body a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      display: block;
      margin-bottom: 4px;
      line-height: 1.45;
    }
    .article-body a:hover {
      color: var(--pink-deep);
    }
    .article-body span {
      font-size: 12px;
      color: var(--text-light);
    }
    /* Form */
    .form-section {
      background: linear-gradient(135deg, var(--pink-soft) 0%, #fff 100%);
      border-top: 1px solid rgba(232, 62, 140, 0.08);
      border-bottom: 1px solid rgba(232, 62, 140, 0.08);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 26px;
      align-items: start;
    }
    .form-info h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .form-info p {
      font-size: 15px;
      color: var(--text-gray);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .contact-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-dark);
    }
    .contact-list li .label {
      font-weight: 600;
      color: var(--pink-deep);
      min-width: 70px;
    }
    .contact-qr {
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .contact-qr img {
      width: 90px;
      height: 90px;
      object-fit: contain;
      border-radius: 10px;
      border: 1px solid rgba(232, 62, 140, 0.15);
      padding: 4px;
      background: #fff;
    }
    .contact-qr span {
      font-size: 13px;
      color: var(--text-light);
      max-width: 160px;
      line-height: 1.5;
    }
    .form-box {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 28px 26px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(232, 62, 140, 0.08);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 14px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 5px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-dark);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1.5px solid #f0d6e2;
      border-radius: 8px;
      font-size: 14px;
      font-family: inherit;
      color: var(--text-dark);
      background: #fffbfd;
      outline: none;
      transition: border-color 0.25s, box-shadow 0.25s;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--pink-primary);
      box-shadow: 0 0 0 3px rgba(232, 62, 140, 0.1);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 90px;
    }
    .form-submit {
      width: 100%;
      margin-top: 6px;
    }
    /* Footer */
    .site-footer {
      background: #2d1b26;
      color: #e8d5de;
      padding: 50px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 32px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col p {
      font-size: 13px;
      line-height: 1.7;
      color: #c9b0bc;
    }
    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul a {
      font-size: 13px;
      color: #c9b0bc;
      transition: color 0.2s;
    }
    .footer-col ul a:hover {
      color: #f8bbd9;
    }
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-links a {
      font-size: 12px;
      color: #b89aa8;
      background: rgba(255, 255, 255, 0.06);
      padding: 5px 12px;
      border-radius: 6px;
      transition: background 0.2s, color 0.2s;
    }
    .footer-links a:hover {
      background: var(--pink-primary);
      color: #fff;
    }
    .footer-bottom {
      text-align: center;
      padding: 20px 0;
      font-size: 12px;
      color: #8f7482;
    }
    .footer-bottom a {
      color: #b89aa8;
    }
    /* Floating */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 90px;
      z-index: 900;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: center;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--white);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid rgba(232, 62, 140, 0.15);
      font-size: 20px;
      transition: transform 0.25s, box-shadow 0.25s;
      color: var(--pink-deep);
      position: relative;
    }
    .float-btn:hover {
      transform: scale(1.08);
      box-shadow: var(--shadow-lg);
    }
    .float-btn .tooltip {
      position: absolute;
      right: 58px;
      top: 50%;
      transform: translateY(-50%);
      background: var(--text-dark);
      color: #fff;
      font-size: 12px;
      padding: 5px 10px;
      border-radius: 6px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s;
    }
    .float-btn:hover .tooltip {
      opacity: 1;
    }
    .float-qr-pop {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #fff;
      border-radius: var(--radius-sm);
      padding: 10px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(232, 62, 140, 0.12);
    }
    .float-qr-pop img {
      width: 120px;
      height: 120px;
      object-fit: contain;
      display: block;
    }
    .float-btn.qr-active .float-qr-pop {
      display: block;
    }
    .back-top {
      position: fixed;
      right: 20px;
      bottom: 28px;
      z-index: 900;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--pink-primary), #f06292);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: none;
      box-shadow: 0 4px 16px rgba(232, 62, 140, 0.35);
      opacity: 0;
      transform: translateY(12px);
      transition: opacity 0.3s, transform 0.3s;
      pointer-events: none;
      font-size: 18px;
    }
    .back-top.visible {
      opacity: 1;
      transform: translateY(0);
      pointer-events: auto;
    }
    .back-top:hover {
      transform: translateY(-3px);
    }
    /* Reveal animation */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    /* Responsive */
    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .steps { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 900px) {
      .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 20px 18px;
        border-bottom: 1px solid rgba(232, 62, 140, 0.12);
        box-shadow: 0 12px 30px rgba(0,0,0,0.08);
        gap: 4px;
      }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 10px 14px; border-radius: 8px; font-size: 15px; }
      .menu-toggle { display: flex; }
      .header-inner { position: relative; }
      .about-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-2 { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr; }
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .grid-3 { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .about-list { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .hero { padding: 48px 0 40px; }
      .section { padding: 48px 0; }
      .nav-actions .btn { padding: 8px 16px; font-size: 13px; }
      .top-bar-right { display: none; }
      .brand-text { font-size: 16px; }
      .hero-actions .btn-lg { padding: 12px 26px; font-size: 15px; }
      .compare-table th, .compare-table td { padding: 10px 12px; font-size: 13px; }
      .rating-box .score { font-size: 30px; }
      .float-service { right: 12px; bottom: 76px; }
      .back-top { right: 12px; bottom: 20px; width: 40px; height: 40px; }
      .float-btn { width: 42px; height: 42px; font-size: 18px; }
    }