/* ==========================================================================
       镭射幻彩风格 (Holographic Iridescent Light Theme) 全局基础规范
       ========================================================================== */
    :root {
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
      --holo-bg: linear-gradient(120deg, #f8fafc 0%, #f1f5f9 35%, #f5f3ff 70%, #f0fdf4 100%);
      --card-bg: rgba(255, 255, 255, 0.82);
      --card-border: rgba(168, 85, 247, 0.18);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --accent-cyan: #06b6d4;
      --accent-purple: #9333ea;
      --accent-pink: #f43f5e;
      --shadow-holo: 0 10px 30px -10px rgba(168, 85, 247, 0.15), 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 20px 40px -12px rgba(99, 102, 241, 0.25);
      --radius-lg: 18px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --max-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: var(--holo-bg);
      min-height: 100vh;
      overflow-x: hidden;
      position: relative;
    }

    /* 镭射高光装饰背景 */
    body::before {
      content: "";
      position: fixed;
      top: -200px;
      left: 50%;
      transform: translateX(-50%);
      width: 1000px;
      height: 600px;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.12) 0%, rgba(6, 182, 212, 0.08) 45%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
      z-index: 0;
    }

    /* 全局主容器 */
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 1;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.3s ease;
    }

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

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 99px;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff !important;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(168, 85, 247, 0.4);
      opacity: 0.96;
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.9);
      color: #4f46e5;
      border: 1px solid rgba(99, 102, 241, 0.3);
    }

    .btn-outline:hover {
      background: #ffffff;
      border-color: #6366f1;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15);
    }

    /* 章节标题规范 */
    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      background: linear-gradient(90deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      color: var(--accent-purple);
      border-radius: 20px;
      border: 1px solid rgba(168, 85, 247, 0.2);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    section {
      padding: 80px 0;
    }

    /* ==========================================================================
       顶部导航栏
       ========================================================================== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(168, 85, 247, 0.12);
      transition: all 0.3s ease;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    /* 明确要求: .nav-links 的 gap 属性设置为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 16px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 8px;
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #7c3aed;
      background: rgba(168, 85, 247, 0.08);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* ==========================================================================
       Hero 首屏 (严格禁用图片)
       ========================================================================== */
    .hero-section {
      padding: 100px 0 80px 0;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 20px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(168, 85, 247, 0.3);
      border-radius: 30px;
      box-shadow: 0 4px 15px rgba(168, 85, 247, 0.1);
      margin-bottom: 24px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #6d28d9;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #0f172a 0%, #4338ca 40%, #6d28d9 70%, #be185d 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 36px auto;
      font-weight: 400;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-features-list {
      display: flex;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
      list-style: none;
    }

    .hero-features-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      color: var(--text-muted);
      background: rgba(255, 255, 255, 0.6);
      padding: 6px 14px;
      border-radius: 8px;
      border: 1px solid rgba(226, 232, 240, 0.8);
    }

    /* ==========================================================================
       数据指标卡片
       ========================================================================== */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -30px;
      margin-bottom: 40px;
    }

    .stat-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-holo);
      backdrop-filter: blur(10px);
      transition: transform 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-4px);
    }

    .stat-number {
      font-size: 2.2rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* ==========================================================================
       平台介绍 & 关于我们
       ========================================================================== */
    .about-box {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-holo);
    }

    .models-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .model-chip {
      padding: 6px 14px;
      background: linear-gradient(135deg, rgba(238, 242, 255, 0.9), rgba(243, 232, 255, 0.9));
      border: 1px solid rgba(168, 85, 247, 0.2);
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #4c1d95;
    }

    /* ==========================================================================
       AIGC服务 & 一站式制作网格
       ========================================================================== */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-holo);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--primary-gradient);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

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

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, #e0e7ff, #f3e8ff);
      color: #6d28d9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 18px;
    }

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

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

    /* ==========================================================================
       对比评测板块
       ========================================================================== */
    .rating-banner {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.08));
      border: 1px solid rgba(168, 85, 247, 0.3);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-score {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-num {
      font-size: 3.2rem;
      font-weight: 900;
      color: #7c3aed;
      line-height: 1;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.4rem;
    }

    .compare-table-wrapper {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-holo);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 700px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }

    .compare-table th {
      background: #f8fafc;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .highlight-col {
      background: rgba(243, 232, 255, 0.3);
      font-weight: 700;
      color: #6d28d9;
    }

    /* ==========================================================================
       案例中心 & 素材展示
       ========================================================================== */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-holo);
    }

    .case-img-box {
      width: 100%;
      overflow: hidden;
      background: #f1f5f9;
    }

    .case-content {
      padding: 20px;
    }

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

    /* ==========================================================================
       客户评论
       ========================================================================== */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-holo);
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

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

    .review-user {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .review-role {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ==========================================================================
       FAQ 折叠面板
       ========================================================================== */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: rgba(255,255,255,0.9);
      transition: background 0.2s ease;
    }

    .faq-question:hover {
      background: rgba(243, 232, 255, 0.3);
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: #7c3aed;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
      background: #fafafa;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px;
    }

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

    /* ==========================================================================
       需求匹配与联系我们表单
       ========================================================================== */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--card-border);
      padding: 40px;
      box-shadow: var(--shadow-holo);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.3s ease;
      background: #f8fafc;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: #7c3aed;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
    }

    .qr-box {
      text-align: center;
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      margin-top: 20px;
    }

    .qr-box img {
      width: 160px;
      height: 160px;
      margin: 0 auto 12px auto;
      border-radius: 8px;
    }

    /* ==========================================================================
       页脚 Footer
       ========================================================================== */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      margin-top: 80px;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1.05rem;
      margin-bottom: 16px;
      font-weight: 700;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #94a3b8;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .friendship-links {
      padding-top: 20px;
      border-top: 1px solid #1e293b;
      margin-bottom: 20px;
      font-size: 0.88rem;
    }

    .friendship-links a {
      color: #94a3b8;
      margin-right: 16px;
      display: inline-block;
    }

    .friendship-links a:hover {
      color: #38bdf8;
    }

    .copyright {
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
    }

    /* 浮动客服入口 */
    .floating-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 14px 20px;
      border-radius: 30px;
      box-shadow: 0 10px 25px rgba(168, 85, 247, 0.4);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      cursor: pointer;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .services-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .services-grid, .reviews-grid, .cases-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
    }