:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --neon-cyan: #00d2ff;
      --neon-purple: #9d4edd;
      --neon-pink: #f72585;
      --neon-blue: #3a0ca3;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-neon: 0 10px 25px -5px rgba(0, 210, 255, 0.15), 0 8px 10px -6px rgba(157, 78, 221, 0.15);
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      background-image: 
        radial-gradient(at 0% 0%, rgba(0, 210, 255, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(247, 37, 133, 0.06) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(157, 78, 221, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

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

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

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

    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

    .brand-logo-wrap img {
      max-height: 42px;
      width: auto;
    }

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

    .nav-links li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-sub);
      padding: 8px 14px;
      border-radius: 6px;
      transition: all 0.25s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: #7209b7;
      background: rgba(157, 78, 221, 0.08);
    }

    .nav-action-btn {
      background: linear-gradient(135deg, #00d2ff, #7209b7);
      color: #ffffff !important;
      padding: 9px 20px !important;
      border-radius: 8px !important;
      font-weight: 600 !important;
      box-shadow: 0 4px 12px rgba(114, 9, 183, 0.25);
      transition: transform 0.2s ease, box-shadow 0.2s ease !important;
    }

    .nav-action-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(114, 9, 183, 0.35);
      background: linear-gradient(135deg, #00d2ff, #9d4edd) !important;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: 6px;
      font-size: 16px;
      cursor: pointer;
      color: var(--text-main);
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      color: #0284c7;
      margin-bottom: 24px;
    }

    .hero-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      background: #00d2ff;
      border-radius: 50%;
      box-shadow: 0 0 8px #00d2ff;
    }

    .hero-title {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .neon-accent {
      background: linear-gradient(135deg, #0077b6, #7209b7, #f72585);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      line-height: 1.7;
      color: var(--text-sub);
      max-width: 840px;
      margin: 0 auto 36px;
    }

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

    .btn-official-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background: linear-gradient(135deg, #00d2ff, #7209b7);
      color: #ffffff;
      padding: 16px 36px;
      border-radius: 12px;
      font-size: 17px;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(0, 210, 255, 0.35);
      border: none;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .btn-official-hero:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 30px rgba(114, 9, 183, 0.45);
    }

    .btn-secondary-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: var(--text-main);
      padding: 15px 32px;
      border-radius: 12px;
      font-size: 16px;
      font-weight: 600;
      border: 1px solid #cbd5e1;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .btn-secondary-hero:hover {
      border-color: #7209b7;
      color: #7209b7;
      background: #faf5ff;
    }

    .metrics-bar {
      margin-top: 50px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: left;
    }

    .metric-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-top: 3px solid #00d2ff;
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .metric-value {
      font-size: 32px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-sub);
    }

    .section-block {
      padding: 70px 0;
    }

    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: #7209b7;
      margin-bottom: 8px;
      display: block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 680px;
      margin: 0 auto;
    }

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

    .p-card {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .p-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, #00d2ff, #f72585);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .p-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-neon);
      border-color: #cbd5e1;
    }

    .p-card:hover::before {
      opacity: 1;
    }

    .p-card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 210, 255, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0077b6;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .p-card h3 {
      font-size: 20px;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .p-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .models-stream-box {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      padding: 32px;
      margin-top: 36px;
    }

    .models-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .models-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .m-tag {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      color: #334155;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 20px;
      transition: all 0.2s ease;
    }

    .m-tag:hover {
      background: #e0e7ff;
      border-color: #c7d2fe;
      color: #4338ca;
    }

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

    .sc-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 22px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .sc-card:hover {
      border-color: #9d4edd;
      box-shadow: 0 8px 20px rgba(157, 78, 221, 0.12);
      transform: translateY(-3px);
    }

    .sc-card-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .sc-card-badge {
      font-size: 11px;
      background: #fdf2f8;
      color: #db2777;
      padding: 3px 8px;
      border-radius: 6px;
      font-weight: 700;
    }

    .sc-card h3 {
      font-size: 17px;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .sc-card p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.55;
    }

    .visual-gallery {
      margin-top: 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .gallery-item {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      background: #fff;
    }

    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .gallery-item:hover img {
      transform: scale(1.04);
    }

    .feature-dual-block {
      margin-top: 40px;
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
    }

    .media-card {
      background: #fff;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    .media-card img {
      width: 100%;
      height: auto;
      display: block;
    }

    .media-card-body {
      padding: 16px 20px;
    }

    .media-card-body h4 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .media-card-body p {
      font-size: 13px;
      color: var(--text-sub);
    }

    .table-container {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

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

    .custom-table th, .custom-table td {
      padding: 18px 24px;
      font-size: 14px;
      border-bottom: 1px solid var(--border-color);
    }

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

    .custom-table tr:hover {
      background: #fcfaff;
    }

    .highlight-cell {
      color: #7209b7;
      font-weight: 700;
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.1), rgba(157, 78, 221, 0.1));
      border: 1px solid rgba(157, 78, 221, 0.25);
      border-radius: 14px;
      padding: 24px 32px;
      margin-bottom: 28px;
    }

    .rating-score {
      font-size: 38px;
      font-weight: 900;
      color: #7209b7;
    }

    .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: 14px;
      padding: 24px;
      position: relative;
    }

    .step-idx {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: linear-gradient(135deg, #00d2ff, #7209b7);
      color: #ffffff;
      font-weight: 800;
      font-size: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }

    .step-card h3 {
      font-size: 18px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-sub);
    }

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

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .t-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .t-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .t-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #cbd5e1, #94a3b8);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #ffffff;
    }

    .t-meta h4 {
      font-size: 15px;
      color: var(--text-main);
    }

    .t-meta span {
      font-size: 12px;
      color: var(--text-sub);
    }

    .faq-list {
      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: 12px;
      overflow: hidden;
      transition: border-color 0.2s;
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 20px;
      font-weight: 400;
      color: #94a3b8;
      transition: transform 0.2s;
    }

    .faq-item.active .faq-question::after {
      content: "-";
      transform: rotate(0deg);
      color: #7209b7;
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }

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

    .contact-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .form-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 14px;
      color: var(--text-main);
      background: #f8fafc;
      transition: all 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: #7209b7;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(114, 9, 183, 0.1);
    }

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

    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, #00d2ff, #7209b7);
      color: #ffffff;
      border: none;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(114, 9, 183, 0.3);
      transition: all 0.25s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .qr-card {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 20px;
      margin-top: 24px;
    }

    .qr-card-img {
      width: 100px;
      height: 100px;
      background: #fff;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .qr-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .contact-list {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      font-size: 14px;
      color: var(--text-sub);
    }

    .contact-item strong {
      color: var(--text-main);
      width: 100px;
    }

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

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.2s ease;
    }

    .article-card:hover {
      transform: translateY(-3px);
      border-color: #9d4edd;
    }

    .article-card h3 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .article-card p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .article-link {
      font-size: 13px;
      color: #7209b7;
      font-weight: 600;
      align-self: flex-start;
    }

    .friend-links-bar {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px 24px;
      margin-top: 36px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .friend-links-bar a {
      font-size: 13px;
      color: #475569;
      background: #f1f5f9;
      padding: 5px 12px;
      border-radius: 6px;
      transition: all 0.2s;
    }

    .friend-links-bar a:hover {
      background: #e2e8f0;
      color: #7209b7;
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 32px;
      margin-top: 70px;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid #f1f5f9;
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-sub);
      margin-top: 14px;
      max-width: 380px;
    }

    .footer-col h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
    }

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

    .footer-col ul li a {
      font-size: 13px;
      color: var(--text-sub);
      transition: color 0.2s;
    }

    .footer-col ul li a:hover {
      color: #7209b7;
    }

    .footer-bottom {
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: #64748b;
    }

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

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      font-size: 13px;
      font-weight: 700;
      transition: transform 0.2s;
    }

    .float-btn:hover {
      transform: scale(1.08);
      border-color: #7209b7;
      color: #7209b7;
    }

    @media (max-width: 1024px) {
      .platform-cards-grid,
      .scenarios-grid,
      .testimonials-grid,
      .articles-grid,
      .visual-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar,
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-dual-block {
        grid-template-columns: 1fr;
      }
      .contact-block {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .navbar {
        height: 64px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
        gap: 0;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 12px 16px;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .platform-cards-grid,
      .scenarios-grid,
      .testimonials-grid,
      .articles-grid,
      .visual-gallery,
      .metrics-bar,
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }