:root {
      --bg-base: #f8faff;
      --bg-surface: #ffffff;
      --bg-card: rgba(255, 255, 255, 0.9);
      --text-main: #1e293b;
      --text-sub: #475569;
      --text-muted: #64748b;
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-laser-start: #3b82f6;
      --accent-laser-mid: #ec4899;
      --accent-laser-end: #06b6d4;
      --laser-gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
      --laser-soft: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(236, 72, 153, 0.08) 50%, rgba(6, 182, 212, 0.08) 100%);
      --laser-border: linear-gradient(135deg, rgba(79, 70, 229, 0.4), rgba(236, 72, 153, 0.4), rgba(6, 182, 212, 0.4));
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(79, 70, 229, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-laser: 0 12px 30px rgba(236, 72, 153, 0.15);
      --radius: 14px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 35%),
        radial-gradient(circle at 90% 10%, rgba(236, 72, 153, 0.06) 0%, transparent 35%),
        radial-gradient(circle at 50% 70%, rgba(6, 182, 212, 0.05) 0%, transparent 45%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

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

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

    .logo-container {
      height: 42px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links a {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-sub);
      border-radius: 6px;
      position: relative;
    }

    .nav-links a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.05);
    }

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

    .btn-laser {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      background: var(--laser-gradient);
      color: #ffffff !important;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 9999px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }

    .btn-laser:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.45);
    }

    .btn-laser:active {
      transform: translateY(0);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 18px;
      background: #ffffff;
      color: var(--text-main) !important;
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 9999px;
      cursor: pointer;
      transition: all 0.2s ease;
      white-space: nowrap;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary) !important;
      box-shadow: var(--shadow-sm);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 8px;
      cursor: pointer;
      color: var(--text-main);
    }

    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      border-radius: 999px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .hero-section {
      padding: 80px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(236, 72, 153, 0.25);
      border-radius: 9999px;
      font-size: 0.88rem;
      color: var(--text-main);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
      margin-bottom: 24px;
    }

    .hero-badge-pulse {
      width: 8px;
      height: 8px;
      background: #ec4899;
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(236, 72, 153, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(236, 72, 153, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(236, 72, 153, 0); }
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      max-width: 900px;
      margin: 0 auto 20px;
      letter-spacing: -0.8px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 780px;
      margin: 0 auto 36px;
    }

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

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

    .stat-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }

    .stat-card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--laser-gradient);
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

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

    .laser-pill-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 36px;
    }

    .laser-pill {
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid var(--border-color);
      border-radius: 9999px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-sub);
      transition: all 0.2s;
    }

    .laser-pill:hover {
      border-color: var(--accent-laser-mid);
      color: var(--primary);
      transform: translateY(-1px);
    }

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

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

    .card-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--laser-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
    }

    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .feature-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 18px;
    }

    .mini-badge {
      font-size: 0.78rem;
      padding: 3px 8px;
      background: #f1f5f9;
      color: var(--text-sub);
      border-radius: 4px;
    }

    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .scene-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 22px;
      transition: all 0.25s ease;
    }

    .scene-item:hover {
      border-color: rgba(236, 72, 153, 0.35);
      box-shadow: var(--shadow-sm);
    }

    .scene-item-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scene-item-title::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--laser-gradient);
    }

    .scene-item-desc {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.55;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .compare-table .highlight-col {
      background: rgba(79, 70, 229, 0.02);
      font-weight: 600;
      color: var(--primary);
    }

    .badge-score {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: #ecfdf5;
      border: 1px solid #10b981;
      color: #047857;
      font-weight: 700;
      border-radius: 999px;
      font-size: 0.9rem;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }

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

    .step-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
    }

    .step-number {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--laser-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 16px;
    }

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

    .step-desc {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

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

    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
      padding-top: 14px;
      border-top: 1px solid #f1f5f9;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--laser-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-title {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .media-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .media-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 16px;
      box-shadow: var(--shadow-sm);
    }

    .media-img-wrapper {
      width: 100%;
      aspect-ratio: 16 / 9;
      border-radius: 10px;
      overflow: hidden;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-wrapper.square {
      aspect-ratio: 1 / 1;
    }

    .media-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .media-info {
      padding: 14px 4px 4px;
    }

    .media-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .media-caption {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .promos-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .promo-card {
      border-radius: 10px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #fff;
    }

    .promo-card img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: border-color 0.2s;
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.3rem;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fcfdfe;
      font-size: 0.95rem;
      color: var(--text-sub);
      padding: 0 22px;
    }

    .faq-item.active {
      border-color: rgba(79, 70, 229, 0.4);
    }

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

    .faq-item.active .faq-answer {
      padding: 0 22px 20px 22px;
      max-height: 200px;
    }

    .form-box {
      max-width: 760px;
      margin: 0 auto;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      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(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
    }

    .form-row-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 32px;
      align-items: start;
    }

    .contact-info-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin: 24px 0;
    }

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

    .qr-container {
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border-radius: 12px;
      display: inline-block;
      text-align: center;
      border: 1px solid var(--border-color);
    }

    .qr-container img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      display: block;
      margin: 0 auto 8px;
    }

    .qr-label {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .articles-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .article-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 18px;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
    }

    .article-item:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .article-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-link {
      font-size: 0.85rem;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 28px;
      color: var(--text-sub);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

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

    .footer-links a {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .friend-links-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
      font-size: 0.88rem;
    }

    .friend-links-bar span {
      font-weight: 600;
      color: var(--text-main);
    }

    .friend-links-bar a {
      color: var(--text-sub);
    }

    .friend-links-bar a:hover {
      color: var(--primary);
    }

    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      cursor: pointer;
      transition: all 0.2s;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    @media (max-width: 992px) {
      .card-grid-4, .card-grid-3, .scene-grid, .reviews-grid, .articles-list, .promos-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .card-grid-4, .card-grid-3, .card-grid-2, .scene-grid, .reviews-grid, .step-timeline, .media-gallery-grid, .promos-row, .articles-list {
        grid-template-columns: 1fr;
      }
      .form-row-2 {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }