:root {
      --candy-pink: #ff5b84;
      --candy-purple: #8b5cf6;
      --candy-blue: #3b82f6;
      --candy-cyan: #06b6d4;
      --candy-yellow: #f59e0b;
      --candy-green: #10b981;
      --bg-cream: #faf9fd;
      --bg-card: #ffffff;
      --text-main: #1e1b4b;
      --text-muted: #64748b;
      --border-soft: #f1f0f7;
      --shadow-candy: 0 12px 32px rgba(139, 92, 246, 0.08);
      --shadow-hover: 0 20px 40px rgba(255, 91, 132, 0.15);
      --radius-candy: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-cream);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-box .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      padding: 10px 14px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: 10px;
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--candy-pink);
      background: rgba(255, 91, 132, 0.06);
    }
    .nav-btn-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-candy-primary {
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      color: #ffffff;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 14px;
      box-shadow: 0 4px 14px rgba(255, 91, 132, 0.35);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-candy-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 91, 132, 0.45);
      color: #ffffff;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 3px;
      background: var(--text-main);
      margin: 4px 0;
      border-radius: 2px;
      transition: 0.3s;
    }

    /* 区域通用样式 */
    .section-spacing {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 700;
      color: var(--candy-purple);
      background: rgba(139, 92, 246, 0.1);
      border-radius: 30px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero (无图片纯CSS糖果色) */
    .hero-section {
      padding: 90px 0 70px 0;
      position: relative;
      background: radial-gradient(circle at 10% 20%, rgba(255, 91, 132, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 40%),
                  linear-gradient(180deg, #ffffff 0%, var(--bg-cream) 100%);
    }
    .hero-wrapper {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 20px;
      border-radius: 40px;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0,0,0,0.05);
      border: 1px solid rgba(226, 232, 240, 0.8);
      margin-bottom: 24px;
      font-size: 14px;
      font-weight: 600;
      color: var(--candy-pink);
    }
    .hero-tag .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--candy-green);
      animation: pulseDot 2s infinite;
    }
    @keyframes pulseDot {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
      100% { opacity: 1; transform: scale(1); }
    }
    .hero-title {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
      color: var(--text-main);
    }
    .hero-title-highlight {
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple), var(--candy-blue));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 780px;
      margin: 0 auto 36px auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-candy-large {
      padding: 15px 36px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 50px;
    }
    .btn-candy-outline {
      background: #ffffff;
      color: var(--candy-purple);
      border: 2px solid var(--candy-purple);
      box-shadow: 0 4px 14px rgba(139, 92, 246, 0.1);
    }
    .btn-candy-outline:hover {
      background: rgba(139, 92, 246, 0.05);
      transform: translateY(-2px);
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .stat-pill-card {
      background: #ffffff;
      padding: 20px 16px;
      border-radius: 16px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
      text-align: center;
      transition: 0.3s;
    }
    .stat-pill-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .stat-pill-value {
      font-size: 26px;
      font-weight: 800;
      color: var(--candy-purple);
      margin-bottom: 4px;
    }
    .stat-pill-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 平台核心模型跑马灯 */
    .model-tag-strip {
      padding: 24px 0;
      background: #ffffff;
      border-top: 1px solid var(--border-soft);
      border-bottom: 1px solid var(--border-soft);
      overflow: hidden;
    }
    .model-tag-wrapper {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .model-badge {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      transition: 0.25s;
    }
    .model-badge:hover {
      border-color: var(--candy-pink);
      color: var(--candy-pink);
      background: rgba(255, 91, 132, 0.04);
    }

    /* 平台介绍卡片 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .about-text-panel h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .about-text-panel p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      text-align: justify;
    }
    .feature-bullet-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 10px;
    }
    .feature-bullet-list li {
      font-size: 14px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-main);
    }
    .feature-bullet-list li::before {
      content: "✔";
      display: inline-block;
      width: 20px;
      height: 20px;
      line-height: 20px;
      text-align: center;
      background: rgba(16, 185, 129, 0.15);
      color: var(--candy-green);
      border-radius: 50%;
      font-size: 11px;
    }
    .about-cards-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .mini-feature-box {
      background: #ffffff;
      padding: 24px;
      border-radius: 16px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
      transition: 0.3s;
    }
    .mini-feature-box:hover {
      transform: translateY(-4px);
      border-color: var(--candy-purple);
    }
    .mini-feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 14px;
    }
    .icon-pink { background: rgba(255, 91, 132, 0.12); color: var(--candy-pink); }
    .icon-cyan { background: rgba(6, 182, 212, 0.12); color: var(--candy-cyan); }
    .icon-yellow { background: rgba(245, 158, 11, 0.12); color: var(--candy-yellow); }
    .icon-purple { background: rgba(139, 92, 246, 0.12); color: var(--candy-purple); }

    /* 服务与能力网格 (多彩糖果风) */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-candy);
      padding: 28px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .service-card::after {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--candy-pink), var(--candy-cyan));
    }
    .service-card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .service-card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      padding: 24px;
      border-radius: 16px;
      border: 1px solid var(--border-soft);
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-candy);
    }
    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--candy-purple), var(--candy-cyan));
      color: #fff;
      font-weight: 800;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 对比评测表格板块 */
    .eval-card {
      background: #ffffff;
      border-radius: var(--radius-candy);
      padding: 36px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
    }
    .eval-score-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px dashed #e2e8f0;
      padding-bottom: 24px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }
    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-badge {
      font-size: 32px;
      font-weight: 900;
      color: var(--candy-pink);
      background: rgba(255, 91, 132, 0.1);
      padding: 6px 18px;
      border-radius: 14px;
    }
    .score-text h4 {
      font-size: 18px;
      font-weight: 800;
    }
    .stars-rate {
      color: var(--candy-yellow);
      font-size: 18px;
    }
    .table-responsive {
      overflow-x: auto;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .eval-table th, .eval-table td {
      padding: 14px 18px;
      font-size: 14px;
      border-bottom: 1px solid #f1f5f9;
    }
    .eval-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }
    .eval-table tr:hover td {
      background: #faf5ff;
    }
    .tag-check {
      color: var(--candy-green);
      font-weight: 700;
    }
    .tag-cross {
      color: #94a3b8;
    }

    /* 案例中心 & 真实素材配图 (首屏以外) */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .showcase-card {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
      display: flex;
      flex-direction: column;
    }
    .showcase-img-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      background: #f1f5f9;
      overflow: hidden;
    }
    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s;
    }
    .showcase-card:hover .showcase-img-wrap img {
      transform: scale(1.05);
    }
    .showcase-info {
      padding: 20px;
      flex: 1;
    }
    .showcase-info h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .showcase-info p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 24px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-candy);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-yellow));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .author-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 常见问题折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border-radius: 14px;
      border: 1px solid var(--border-soft);
      margin-bottom: 12px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--candy-purple);
    }
    .faq-toggle-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
      color: var(--candy-pink);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #fafafc;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* 最新文章与资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }
    .article-item {
      background: #ffffff;
      padding: 18px;
      border-radius: 12px;
      border: 1px solid var(--border-soft);
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: 0.25s;
    }
    .article-item:hover {
      border-color: var(--candy-blue);
      transform: translateY(-3px);
    }
    .article-title {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .article-link {
      font-size: 12px;
      color: var(--candy-blue);
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 需求匹配与联系我们表单 */
    .form-contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-candy);
      padding: 40px;
      box-shadow: var(--shadow-candy);
      border: 1px solid var(--border-soft);
    }
    .contact-info-panel h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .contact-info-panel p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .contact-meta-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 28px;
    }
    .contact-meta-list li {
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
    }
    .qr-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 16px;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
    }
    .qr-box img {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      object-fit: cover;
    }
    .qr-text h5 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .qr-text p {
      font-size: 12px;
      color: var(--text-muted);
      margin: 0;
    }
    .form-box {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border-radius: 10px;
      border: 1px solid #cbd5e1;
      font-size: 14px;
      outline: none;
      transition: 0.2s;
      background: #fafafc;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--candy-purple);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    }
    .form-textarea {
      resize: vertical;
      min-height: 85px;
    }

    /* 友情链接与底部 */
    .links-bar {
      padding: 24px 0;
      background: #ffffff;
      border-top: 1px solid var(--border-soft);
    }
    .links-flex {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .links-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .links-list {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .links-list a {
      font-size: 13px;
      color: var(--text-muted);
    }
    .links-list a:hover {
      color: var(--candy-pink);
    }
    .site-footer {
      background: #111827;
      color: #94a3b8;
      padding: 40px 0 24px 0;
    }
    .footer-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      border-bottom: 1px solid #1f2937;
      padding-bottom: 24px;
      margin-bottom: 20px;
    }
    .footer-brand {
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
    }
    .footer-nav {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .footer-nav a {
      font-size: 13px;
      color: #cbd5e1;
    }
    .footer-nav a:hover {
      color: var(--candy-pink);
    }
    .footer-copy {
      text-align: center;
      font-size: 12px;
      color: #64748b;
    }

    /* 浮动组件 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 8px 24px rgba(0,0,0,0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--candy-purple);
      border: 1px solid var(--border-soft);
      cursor: pointer;
      position: relative;
    }
    .float-btn:hover {
      transform: scale(1.08);
      color: var(--candy-pink);
    }
    .float-popover {
      display: none;
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 12px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      border: 1px solid var(--border-soft);
      text-align: center;
      width: 140px;
    }
    .float-popover img {
      width: 110px;
      height: 110px;
      border-radius: 8px;
      display: block;
      margin: 0 auto 6px auto;
    }
    .float-popover span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }
    .float-btn:hover .float-popover {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .services-grid, .showcase-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid var(--border-soft);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-stats-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .form-contact-wrapper {
        grid-template-columns: 1fr;
      }
      .services-grid, .showcase-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        flex-direction: column;
        align-items: flex-start;
      }
    }