* { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background: #f8faff;
      color: #1a1f36;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 镭射幻彩装饰统一元素 */
    .glow-bg {
      position: relative;
      isolation: isolate;
    }
    .glow-bg::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 20% 30%, rgba(120, 80, 255, 0.08), transparent 45%),
                  radial-gradient(circle at 80% 70%, rgba(255, 100, 200, 0.08), transparent 45%),
                  radial-gradient(circle at 50% 100%, rgba(0, 200, 255, 0.08), transparent 50%);
      z-index: -1;
      pointer-events: none;
    }
    /* 导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.82);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(120, 100, 255, 0.15);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      min-height: 72px;
      gap: 12px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      flex-shrink: 0;
    }
    .ai-page-logo {
      max-height: 40px;
      width: auto;
      display: block;
    }
    .brand-name {
      font-size: 1.3rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, #381d7a, #b24bff, #ff6ec7);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 按照要求gap为0 */
      flex-wrap: wrap;
      list-style: none;
    }
    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 0.9rem;
      font-weight: 500;
      color: #2d2f4a;
      text-decoration: none;
      border-radius: 100px;
      transition: background 0.2s, color 0.2s, transform 0.15s;
      white-space: nowrap;
    }
    .nav-links li a:hover {
      background: rgba(100, 70, 255, 0.08);
      color: #381d7a;
      transform: translateY(-1px);
    }
    .nav-cta {
      display: inline-block;
      padding: 8px 20px;
      background: linear-gradient(105deg, #6b4eff, #b24bff);
      color: #fff;
      font-weight: 600;
      font-size: 0.9rem;
      border-radius: 100px;
      text-decoration: none;
      box-shadow: 0 8px 18px -6px rgba(107, 78, 255, 0.4);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 24px -8px rgba(107, 78, 255, 0.6);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid rgba(0,0,0,0.1);
      border-radius: 10px;
      padding: 6px 12px;
      font-size: 1.2rem;
      cursor: pointer;
      color: #2d2f4a;
    }
    /* 首屏 HERO - 无图片 */
    .hero {
      padding: 60px 0 40px;
      position: relative;
    }
    .hero-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      gap: 24px;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 18px;
      background: rgba(130, 90, 255, 0.12);
      color: #4a2d9c;
      font-weight: 600;
      font-size: 0.8rem;
      border-radius: 100px;
      letter-spacing: 0.3px;
      border: 1px solid rgba(130, 90, 255, 0.2);
      backdrop-filter: blur(4px);
      animation: fadeUp 0.7s ease;
    }
    h1 {
      font-size: clamp(2rem, 5vw, 3.5rem);
      line-height: 1.2;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: #16162e;
      animation: fadeUp 0.7s ease 0.1s both;
    }
    h1 span {
      background: linear-gradient(135deg, #6b4eff, #b24bff, #ff6ec7);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: #4a4d6b;
      max-width: 680px;
      animation: fadeUp 0.7s ease 0.2s both;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-top: 8px;
      animation: fadeUp 0.7s ease 0.3s both;
    }
    .btn-primary {
      display: inline-block;
      padding: 14px 36px;
      background: linear-gradient(105deg, #6b4eff, #b24bff);
      color: #fff;
      font-weight: 600;
      font-size: 1rem;
      border-radius: 60px;
      text-decoration: none;
      transition: transform 0.2s, box-shadow 0.2s;
      box-shadow: 0 12px 28px -8px rgba(107, 78, 255, 0.5);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 20px 32px -8px rgba(107, 78, 255, 0.7);
    }
    .btn-outline {
      display: inline-block;
      padding: 14px 32px;
      border: 1.5px solid #d0c6f0;
      background: rgba(255,255,255,0.6);
      color: #2d2f4a;
      font-weight: 600;
      border-radius: 60px;
      text-decoration: none;
      transition: background 0.2s, border-color 0.2s, transform 0.2s;
      backdrop-filter: blur(4px);
    }
    .btn-outline:hover {
      background: #fff;
      border-color: #b24bff;
      transform: translateY(-2px);
    }
    /* 数据指标卡片 */
    .metrics {
      padding: 40px 0 20px;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: #ffffff;
      border-radius: 28px;
      padding: 28px 20px;
      text-align: center;
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.02), 0 0 0 1px rgba(120, 100, 255, 0.08);
      transition: transform 0.25s ease, box-shadow 0.3s;
      backdrop-filter: blur(4px);
    }
    .metric-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 30px -12px rgba(107, 78, 255, 0.2), 0 0 0 1px rgba(120, 100, 255, 0.2);
    }
    .metric-number {
      font-size: 2.4rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, #381d7a, #b24bff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      line-height: 1.2;
    }
    .metric-label {
      font-size: 0.95rem;
      color: #5f6382;
      margin-top: 6px;
      font-weight: 500;
    }
    /* 通用区块标题 */
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title h2 {
      font-size: clamp(1.8rem, 3.5vw, 2.4rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      color: #16162e;
      margin-bottom: 12px;
    }
    .section-title p {
      color: #5f6382;
      font-size: 1.05rem;
      max-width: 600px;
      margin: 0 auto;
    }
    /* 服务卡片网格 */
    .services {
      padding: 60px 0;
      background: linear-gradient(180deg, #f8faff 0%, #f3eeff 100%);
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 28px;
    }
    .service-card {
      background: #ffffff;
      border-radius: 28px;
      padding: 28px 24px;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.02);
      transition: transform 0.25s, box-shadow 0.3s, border-color 0.3s;
      border: 1px solid rgba(200, 180, 255, 0.3);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 34px -12px rgba(120, 80, 255, 0.25);
      border-color: rgba(170, 120, 255, 0.6);
    }
    .service-icon {
      font-size: 2rem;
      line-height: 1;
      margin-bottom: 4px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: #1f1b3a;
    }
    .service-card p {
      color: #5f6382;
      font-size: 0.92rem;
    }
    .service-tag {
      font-size: 0.75rem;
      font-weight: 600;
      color: #6b4eff;
      background: rgba(107, 78, 255, 0.08);
      padding: 4px 10px;
      border-radius: 100px;
      align-self: flex-start;
      margin-top: 6px;
    }
    /* 对比评测 */
    .comparison {
      padding: 70px 0;
      background: linear-gradient(135deg, #f5f1ff 0%, #f0f7ff 100%);
    }
    .eval-card {
      background: #fff;
      border-radius: 32px;
      padding: 36px;
      border: 1px solid rgba(160, 120, 255, 0.2);
      box-shadow: 0 16px 48px -16px rgba(100, 60, 255, 0.15);
      backdrop-filter: blur(10px);
    }
    .eval-header {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 28px;
    }
    .eval-score {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }
    .eval-score .big {
      font-size: 3.2rem;
      font-weight: 800;
      color: #381d7a;
      line-height: 1;
    }
    .eval-score .small {
      font-size: 1.2rem;
      color: #5f6382;
    }
    .stars {
      color: #ffb800;
      font-size: 1.6rem;
      letter-spacing: 2px;
    }
    .eval-table-wrap {
      overflow-x: auto;
      border-radius: 20px;
      border: 1px solid #e6dfff;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.95rem;
      min-width: 720px;
    }
    th {
      background: #efeaff;
      color: #2d1b5e;
      font-weight: 700;
      padding: 16px 20px;
      text-align: left;
    }
    td {
      padding: 14px 20px;
      border-top: 1px solid #ede8ff;
      color: #3d3f5e;
      background: #fff;
    }
    tr:hover td {
      background: #faf8ff;
    }
    .highlight {
      color: #6b4eff;
      font-weight: 700;
    }
    /* 用户评价 */
    .testimonials {
      padding: 70px 0;
      background: #f8faff;
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #fff;
      border-radius: 24px;
      padding: 28px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
      border: 1px solid rgba(200, 180, 255, 0.3);
      transition: transform 0.25s, box-shadow 0.3s;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 32px -12px rgba(100, 70, 255, 0.15);
    }
    .review-text {
      font-size: 0.98rem;
      color: #2e2f44;
      margin-bottom: 16px;
      line-height: 1.65;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #b8a9ff, #ffb3e6);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 1.1rem;
    }
    .author-info strong {
      display: block;
      font-size: 0.95rem;
      color: #16162e;
    }
    .author-info span {
      font-size: 0.8rem;
      color: #7b7f9e;
    }
    /* FAQ */
    .faq-section {
      padding: 70px 0;
      background: #ffffff;
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      border: 1px solid #e1d9ff;
      border-radius: 20px;
      background: #fbfaff;
      overflow: hidden;
      transition: box-shadow 0.2s;
    }
    .faq-item.active {
      box-shadow: 0 12px 24px -12px rgba(107, 78, 255, 0.25);
      border-color: #b7a4ff;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      font-weight: 600;
      cursor: pointer;
      user-select: none;
      color: #1f1b3a;
      background: transparent;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: rgba(107, 78, 255, 0.03);
    }
    .faq-icon {
      font-size: 1.4rem;
      color: #6b4eff;
      transition: transform 0.25s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      color: #4c4f6e;
      font-size: 0.95rem;
      transition: max-height 0.35s ease, padding 0.25s ease;
    }
    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 0 24px 22px;
    }
    /* 需求表单 */
    .form-section {
      padding: 70px 0;
      background: linear-gradient(155deg, #f8f4ff 0%, #fff 100%);
    }
    .form-wrap {
      max-width: 860px;
      margin: 0 auto;
      background: #fff;
      border-radius: 40px;
      padding: 48px 40px;
      box-shadow: 0 24px 60px -20px rgba(100, 70, 255, 0.18);
      border: 1px solid rgba(180, 150, 255, 0.2);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    label {
      font-weight: 600;
      font-size: 0.9rem;
      color: #23233d;
    }
    input, select, textarea {
      width: 100%;
      padding: 14px 18px;
      border-radius: 16px;
      border: 1px solid #ddd6f0;
      font-family: inherit;
      font-size: 0.95rem;
      background: #fdfcff;
      transition: border 0.2s, box-shadow 0.2s;
      color: #1a1f36;
    }
    input:focus, select:focus, textarea:focus {
      outline: none;
      border-color: #a48bff;
      box-shadow: 0 0 0 4px rgba(107, 78, 255, 0.12);
    }
    textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-btn {
      background: linear-gradient(105deg, #6b4eff, #b24bff);
      color: #fff;
      border: none;
      padding: 16px 32px;
      border-radius: 60px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
      box-shadow: 0 12px 24px -8px rgba(107, 78, 255, 0.4);
      margin-top: 16px;
    }
    .form-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 30px -8px rgba(107, 78, 255, 0.6);
    }
    /* 底部区域合并 */
    footer {
      background: #131226;
      color: #d9d7f0;
      padding: 56px 0 28px;
      margin-top: 40px;
      border-radius: 48px 48px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand p {
      color: #aeacd0;
      font-size: 0.9rem;
      margin-top: 12px;
      max-width: 260px;
    }
    .footer-links h4, .footer-contact h4 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a, .friend-links a {
      color: #b6b3da;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s;
    }
    .footer-links a:hover, .friend-links a:hover {
      color: #ffffff;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 20px;
      margin-top: 10px;
    }
    .footer-contact p {
      font-size: 0.88rem;
      color: #b6b3da;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: #8d8aa9;
    }
    /* 浮动客服 */
    .float-service {
      position: fixed;
      right: 24px;
      bottom: 100px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 12px;
      align-items: center;
    }
    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #fff;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid rgba(107, 78, 255, 0.18);
      transition: transform 0.2s, box-shadow 0.2s;
      font-size: 1.5rem;
      text-decoration: none;
      color: #381d7a;
    }
    .float-btn:hover {
      transform: scale(1.06);
      box-shadow: 0 12px 28px rgba(107, 78, 255, 0.25);
    }
    .float-btn img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 50%;
      display: block;
    }
    /* 返回顶部 */
    #backTop {
      position: fixed;
      right: 24px;
      bottom: 32px;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
      display: none;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.4rem;
      border: 1px solid #e1d9ff;
      color: #381d7a;
      transition: opacity 0.2s, transform 0.2s;
      z-index: 98;
    }
    #backTop:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 28px rgba(107, 78, 255, 0.3);
    }
    /* 动画 */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(18px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .metric-grid { grid-template-columns: repeat(2, 1fr); }
      .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 0;
        gap: 0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 8px;
        width: 100%;
      }
      .menu-toggle {
        display: block;
      }
      .nav-inner {
        justify-content: space-between;
        flex-wrap: wrap;
      }
      .hero-actions { flex-direction: column; width: 100%; align-items: center; }
      .btn-primary, .btn-outline { width: 100%; text-align: center; }
      .eval-header { flex-direction: column; align-items: flex-start; }
      .testimonial-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full { grid-column: span 1; }
      .form-wrap { padding: 28px 20px; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .float-service { right: 12px; bottom: 90px; }
      .float-btn { width: 44px; height: 44px; font-size: 1.2rem; }
    }
    @media (max-width: 480px) {
      .metric-grid { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: 1fr; }
    }
    /* 友情链接 */
    .friend-links a {
      color: #b6b3da;
    }
    .token-compare {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      margin-top: 28px;
    }
    .token-chip {
      background: #fff;
      border-radius: 100px;
      padding: 12px 24px;
      font-weight: 600;
      color: #381d7a;
      box-shadow: 0 4px 14px rgba(0,0,0,0.02);
      border: 1px solid #e6dfff;
      display: flex;
      align-items: center;
      gap: 12px;
      transition: transform 0.2s;
    }
    .token-chip:hover {
      transform: translateY(-2px);
    }
    .price {
      color: #b24bff;
      font-weight: 800;
    }
    .ai-page-image {
      max-width: 100%;
      height: auto;
      border-radius: 24px;
    }
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 24px;
    }
    .case-item {
      background: #fff;
      border-radius: 24px;
      padding: 20px;
      box-shadow: 0 6px 20px rgba(0,0,0,0.02);
      border: 1px solid #ede5ff;
    }
    /* 文章列表 */
    .article-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 28px;
    }
    .article-list a {
      background: #fff;
      padding: 10px 22px;
      border-radius: 100px;
      text-decoration: none;
      color: #3a2d5f;
      font-weight: 500;
      font-size: 0.9rem;
      border: 1px solid #e1d4ff;
      transition: all 0.2s;
    }
    .article-list a:hover {
      background: #6b4eff;
      color: #fff;
      border-color: #6b4eff;
    }