:root {
      --bg-main: #0a0814;
      --bg-card: rgba(22, 17, 43, 0.75);
      --bg-card-hover: rgba(36, 26, 68, 0.9);
      --accent-pink: #ff2d8d;
      --accent-purple: #9933ff;
      --accent-cyan: #00f0ff;
      --text-main: #f8f9ff;
      --text-sub: #b4b0d0;
      --border-glow: rgba(255, 45, 141, 0.28);
      --border-strong: rgba(153, 51, 255, 0.5);
      --grad-pink-purple: linear-gradient(135deg, #ff2d8d 0%, #9933ff 100%);
      --grad-neon-glow: linear-gradient(90deg, #ff007f, #9933ff, #00f0ff);
      --shadow-neon: 0 8px 32px rgba(255, 45, 141, 0.2);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background: radial-gradient(circle at 50% 0%, #2a1147 0%, #0a0814 60%, #05040a 100%);
      min-height: 100vh;
      line-height: 1.6;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    header {
      width: 100%;
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 8, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-glow);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .brand-box .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-text {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.5px;
      background: var(--grad-neon-glow);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      color: var(--text-sub);
      text-decoration: none;
      font-size: 14px;
      padding: 10px 14px;
      transition: all 0.3s ease;
      display: inline-block;
      font-weight: 500;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
      text-shadow: 0 0 10px var(--accent-pink);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-cyber {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      text-decoration: none;
      transition: all 0.3s ease;
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-pink {
      background: var(--grad-pink-purple);
      color: #ffffff;
      box-shadow: 0 0 16px rgba(255, 45, 141, 0.45);
    }
    .btn-pink:hover {
      box-shadow: 0 0 25px rgba(255, 45, 141, 0.8);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--border-strong);
      color: #f8f9ff;
    }
    .btn-outline:hover {
      background: rgba(153, 51, 255, 0.2);
      border-color: var(--accent-pink);
      color: #fff;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-glow);
      color: #fff;
      padding: 8px 12px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 16px;
    }
    main {
      width: 100%;
    }
    section {
      padding: 60px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      margin-bottom: 44px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: var(--accent-pink);
      border: 1px solid rgba(255, 45, 141, 0.4);
      background: rgba(255, 45, 141, 0.1);
      padding: 4px 14px;
      border-radius: 30px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .section-desc {
      color: var(--text-sub);
      font-size: 15px;
      max-width: 680px;
      margin: 0 auto;
    }
    .hero-section {
      padding: 90px 0 60px;
      text-align: center;
      position: relative;
    }
    .hero-glow-bg {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 600px;
      height: 350px;
      background: radial-gradient(circle, rgba(153, 51, 255, 0.3) 0%, rgba(255, 45, 141, 0.15) 50%, transparent 75%);
      filter: blur(50px);
      z-index: -1;
      pointer-events: none;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(30, 20, 56, 0.7);
      border: 1px solid var(--border-glow);
      padding: 8px 18px;
      border-radius: 40px;
      margin-bottom: 24px;
      font-size: 13px;
      color: var(--accent-cyan);
    }
    .hero-badge-pulse {
      width: 8px;
      height: 8px;
      background: var(--accent-pink);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent-pink);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.3); }
      100% { opacity: 0.4; transform: scale(0.9); }
    }
    .hero-title {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: var(--grad-neon-glow);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto 36px;
      line-height: 1.65;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      padding: 14px 36px;
      font-size: 16px;
      font-weight: 700;
      background: var(--grad-pink-purple);
      color: #fff;
      border-radius: 8px;
      text-decoration: none;
      box-shadow: 0 0 25px rgba(255, 45, 141, 0.6);
      transition: all 0.3s;
    }
    .btn-hero-primary:hover {
      box-shadow: 0 0 35px rgba(255, 45, 141, 0.9);
      transform: translateY(-3px);
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      padding: 20px 16px;
      text-align: center;
      transition: all 0.3s;
    }
    .stat-card:hover {
      border-color: var(--accent-pink);
      transform: translateY(-4px);
    }
    .stat-num {
      font-size: 28px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 4px;
      background: var(--grad-neon-glow);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-sub);
    }
    .model-tags-bar {
      margin-top: 36px;
      padding: 16px;
      background: rgba(20, 15, 38, 0.6);
      border-radius: 10px;
      border: 1px dashed rgba(153, 51, 255, 0.3);
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      align-items: center;
    }
    .model-tag-item {
      font-size: 12px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 3px 10px;
      border-radius: 20px;
      color: #ddd;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .cyber-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      padding: 24px;
      transition: all 0.3s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .cyber-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--accent-pink);
      box-shadow: var(--shadow-neon);
      transform: translateY(-4px);
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(255, 45, 141, 0.12);
      border: 1px solid rgba(255, 45, 141, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--accent-pink);
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .card-text {
      font-size: 13.5px;
      color: var(--text-sub);
      line-height: 1.6;
    }
    .media-card-box {
      border-radius: 12px;
      overflow: hidden;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      transition: all 0.3s;
    }
    .media-card-box:hover {
      border-color: var(--accent-pink);
      box-shadow: var(--shadow-neon);
    }
    .media-card-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #110d22;
      overflow: hidden;
    }
    .media-card-img-wrap.aspect-square {
      aspect-ratio: 1 / 1;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.5s ease;
    }
    .media-card-box:hover .media-card-img-wrap img {
      transform: scale(1.04);
    }
    .media-card-info {
      padding: 18px;
    }
    .compare-table-wrap {
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .compare-table th {
      background: rgba(30, 20, 56, 0.8);
      color: #ffffff;
      font-weight: 700;
    }
    .compare-table td {
      color: var(--text-sub);
    }
    .compare-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }
    .highlight-col {
      color: #fff;
      font-weight: 600;
      background: rgba(255, 45, 141, 0.06);
      border-left: 1px solid rgba(255, 45, 141, 0.2);
      border-right: 1px solid rgba(255, 45, 141, 0.2);
    }
    .score-badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
      background: var(--grad-pink-purple);
      color: #fff;
      font-weight: 700;
      font-size: 13px;
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      padding: 22px;
      position: relative;
    }
    .step-number {
      font-size: 32px;
      font-weight: 900;
      color: rgba(255, 45, 141, 0.25);
      position: absolute;
      top: 14px;
      right: 18px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 8px;
      overflow: hidden;
      transition: all 0.3s;
    }
    .faq-question {
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      color: #ffffff;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--accent-pink);
    }
    .faq-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
      color: var(--accent-pink);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: rgba(14, 10, 28, 0.7);
      padding: 0 20px;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--grad-pink-purple);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
    }
    .review-meta h4 {
      font-size: 14px;
      color: #fff;
    }
    .review-meta p {
      font-size: 12px;
      color: var(--text-sub);
    }
    .form-wrap {
      max-width: 680px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--shadow-neon);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #ffffff;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(12, 9, 24, 0.8);
      border: 1px solid rgba(153, 51, 255, 0.4);
      border-radius: 8px;
      color: #ffffff;
      font-size: 14px;
      outline: none;
      transition: border-color 0.3s;
    }
    .form-control:focus {
      border-color: var(--accent-pink);
      box-shadow: 0 0 10px rgba(255, 45, 141, 0.3);
    }
    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      background: var(--grad-pink-purple);
      color: #fff;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s;
    }
    .btn-submit:hover {
      box-shadow: 0 0 25px rgba(255, 45, 141, 0.8);
    }
    .links-card-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }
    .links-card-list a {
      color: #ffffff;
      text-decoration: none;
      background: rgba(30, 20, 56, 0.6);
      border: 1px solid var(--border-glow);
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 13.5px;
      transition: all 0.3s;
    }
    .links-card-list a:hover {
      border-color: var(--accent-pink);
      background: rgba(255, 45, 141, 0.15);
      color: var(--accent-cyan);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 16px;
    }
    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-sub);
    }
    .contact-info-item strong {
      color: #fff;
      min-width: 80px;
    }
    .qr-box {
      margin-top: 20px;
      padding: 16px;
      background: rgba(20, 15, 38, 0.8);
      border: 1px solid var(--border-glow);
      border-radius: 8px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
    }
    .qr-box img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      border-radius: 6px;
    }
    footer {
      width: 100%;
      background: #06040d;
      border-top: 1px solid rgba(153, 51, 255, 0.25);
      padding: 40px 0 30px;
      margin-top: 40px;
    }
    .footer-inner {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      padding-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-sub);
    }
    .footer-links-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .footer-links-group a {
      color: var(--text-sub);
      text-decoration: none;
      font-size: 13px;
      transition: color 0.3s;
    }
    .footer-links-group a:hover {
      color: var(--accent-pink);
    }
    .fixed-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .fixed-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: rgba(22, 17, 43, 0.9);
      border: 1px solid var(--accent-pink);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(255, 45, 141, 0.3);
      transition: all 0.3s;
      text-decoration: none;
      font-size: 12px;
      font-weight: 700;
    }
    .fixed-btn:hover {
      background: var(--accent-pink);
      transform: scale(1.1);
    }
    @media (max-width: 992px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .process-steps { grid-template-columns: repeat(2, 1fr); }
      .contact-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .mobile-menu-btn { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #0d091a;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-glow);
      }
      .nav-links.active { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links li a { padding: 12px 0; width: 100%; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
      .nav-action { display: none; }
      .grid-3 { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .hero-title { font-size: 32px; }
      .hero-subtitle { font-size: 15px; }
      .process-steps { grid-template-columns: 1fr; }
      .hero-stats-grid { grid-template-columns: 1fr; }
    }