:root {
      --primary: #524eee;
      --primary-hover: #3e39d3;
      --holo-blue: #00d2ff;
      --holo-purple: #9b51e0;
      --holo-pink: #ff52d9;
      --holo-cyan: #70f3ff;
      --text-main: #141724;
      --text-muted: #596172;
      --text-light: #8993a4;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-card-glass: rgba(255, 255, 255, 0.88);
      --border-color: #e2e8f0;
      --border-holo: linear-gradient(135deg, rgba(0, 210, 255, 0.45), rgba(155, 81, 224, 0.45), rgba(255, 82, 217, 0.45));
      --shadow-sm: 0 4px 12px rgba(20, 23, 36, 0.04);
      --shadow-md: 0 10px 30px rgba(82, 78, 238, 0.08);
      --shadow-holo: 0 12px 36px rgba(112, 243, 255, 0.18), 0 4px 18px rgba(255, 82, 217, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    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-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(112, 243, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 25%, rgba(255, 82, 217, 0.07) 0%, transparent 45%),
        radial-gradient(circle at 50% 70%, rgba(155, 81, 224, 0.06) 0%, transparent 50%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

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

    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      background: rgba(82, 78, 238, 0.08);
      border: 1px solid rgba(82, 78, 238, 0.2);
      border-radius: 30px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
    }

    /* 镭射幻彩光泽卡片通用 */
    .holo-card {
      background: var(--bg-card-glass);
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.9);
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: var(--transition);
      backdrop-filter: blur(10px);
    }

    .holo-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--holo-blue), var(--holo-purple), var(--holo-pink), var(--holo-cyan));
      opacity: 0.65;
      transition: var(--transition);
    }

    .holo-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-holo);
      border-color: rgba(155, 81, 224, 0.35);
    }

    .holo-card:hover::before {
      opacity: 1;
      height: 4px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-area img.ai-page-logo {
      height: 40px;
      width: auto;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

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

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
      background: rgba(82, 78, 238, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 30px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, #524eee 0%, #7b3fe4 50%, #d83cb8 100%);
      box-shadow: 0 4px 15px rgba(82, 78, 238, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(82, 78, 238, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      color: var(--primary);
      background: #ffffff;
      border-color: rgba(82, 78, 238, 0.35);
    }

    .btn-outline:hover {
      background: rgba(82, 78, 238, 0.05);
      border-color: var(--primary);
    }

    .btn-large {
      padding: 14px 34px;
      font-size: 1.05rem;
    }

    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 HERO (无图片) */
    .hero-section {
      padding: 75px 0 60px;
      position: relative;
      overflow: hidden;
    }

    .hero-holo-bg {
      position: absolute;
      top: -20%;
      left: 50%;
      transform: translateX(-50%);
      width: 850px;
      height: 480px;
      background: radial-gradient(ellipse at center, rgba(112, 243, 255, 0.22) 0%, rgba(155, 81, 224, 0.18) 40%, rgba(255, 82, 217, 0.12) 70%, transparent 80%);
      filter: blur(50px);
      z-index: -1;
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 30px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(155, 81, 224, 0.3);
      box-shadow: 0 4px 12px rgba(155, 81, 224, 0.1);
      margin-bottom: 24px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #7b3fe4;
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -1px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 35px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 45px;
      flex-wrap: wrap;
    }

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

    .stat-card {
      padding: 22px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .stat-num {
      font-size: 1.9rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }

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

    /* 平台矩阵网格 */
    .model-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      padding: 8px 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: var(--transition);
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    /* 卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .feature-card {
      padding: 28px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(155, 81, 224, 0.15));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.4rem;
      font-weight: 700;
    }

    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      padding: 24px;
      text-align: center;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-badge {
      width: 38px;
      height: 38px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--holo-blue), var(--holo-purple));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(82, 78, 238, 0.25);
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* 媒体展示容器 */
    .media-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .media-card:hover {
      box-shadow: var(--shadow-holo);
      transform: translateY(-4px);
    }

    .media-card .img-wrap {
      width: 100%;
      background: #eef2f6;
      overflow: hidden;
    }

    .media-card .img-wrap img {
      width: 100%;
      height: auto;
      transition: transform 0.4s ease;
    }

    .media-card:hover .img-wrap img {
      transform: scale(1.03);
    }

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

    .media-tag {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 6px;
    }

    .media-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .media-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格 */
    .rating-banner {
      background: linear-gradient(135deg, rgba(82, 78, 238, 0.08), rgba(255, 82, 217, 0.08));
      border: 1px solid rgba(82, 78, 238, 0.2);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-left h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .rating-left p {
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .rating-score {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .score-val {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-max {
      font-size: 1.1rem;
      color: var(--text-light);
      font-weight: 600;
    }

    .score-stars {
      color: #ffb800;
      font-size: 1.2rem;
      margin-left: 8px;
    }

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

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

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

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

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

    .custom-table td.highlight {
      background: rgba(82, 78, 238, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* 用户评论 */
    .review-card {
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

    .review-text::before {
      content: "“";
      font-size: 3rem;
      color: rgba(82, 78, 238, 0.15);
      position: absolute;
      top: -20px;
      left: -10px;
      line-height: 1;
      font-family: Georgia, serif;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--holo-blue), var(--holo-pink));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .reviewer-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-meta p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      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: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(82, 78, 238, 0.4);
    }

    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.02rem;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 22px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
      padding-bottom: 18px;
    }

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

    /* 表单与联系区 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: stretch;
    }

    .form-box {
      padding: 32px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      background: #ffffff;
      color: var(--text-main);
      font-size: 0.95rem;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(82, 78, 238, 0.15);
    }

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

    .contact-info-box {
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .contact-item {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: rgba(82, 78, 238, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .qr-area {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 16px;
      background: rgba(255, 255, 255, 0.8);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .qr-area img {
      width: 100px;
      height: 100px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
    }

    .qr-text h4 {
      font-size: 0.98rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .qr-text p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 文章列表 */
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .article-item {
      padding: 18px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .article-item:hover {
      border-color: var(--primary);
      transform: translateX(4px);
    }

    .article-item a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      flex: 1;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 12px;
    }

    .article-item a:hover {
      color: var(--primary);
    }

    .article-arrow {
      color: var(--primary);
      font-weight: bold;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: var(--text-muted);
    }

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

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-box a {
      color: var(--text-muted);
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.82rem;
    }

    .friend-links-box a:hover {
      background: rgba(82, 78, 238, 0.1);
      color: var(--primary);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 25px;
      border-top: 1px solid var(--border-color);
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 悬浮客服挂件 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-size: 1.2rem;
      border: 1px solid rgba(82, 78, 238, 0.2);
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-holo);
      border: 1px solid var(--border-color);
      display: none;
      width: 140px;
      text-align: center;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 6px;
    }

    .float-qr-pop p {
      font-size: 0.78rem;
      color: var(--text-main);
      font-weight: 600;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    /* 响应式样式 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid, .footer-inner {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 10px 0;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .grid-2, .grid-3, .grid-4, .steps-container, .article-list {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .header-actions .btn {
        display: none;
      }
    }