:root {
      --primary: #ff5e7e;
      --primary-light: #ffeef2;
      --secondary: #6366f1;
      --secondary-light: #eef2ff;
      --accent-yellow: #ffb800;
      --accent-cyan: #06b6d4;
      --accent-green: #10b981;
      --bg-main: #faf9fd;
      --bg-card: #ffffff;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --border-color: #f1f0f7;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 12px rgba(255, 94, 126, 0.06);
      --shadow-md: 0 10px 25px rgba(99, 102, 241, 0.08);
      --shadow-hover: 0 16px 32px rgba(99, 102, 241, 0.14);
      --container-width: 1200px;
    }

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

    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: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 10%, rgba(255, 94, 126, 0.03) 0%, transparent 40%),
                  radial-gradient(circle at 90% 30%, rgba(99, 102, 241, 0.04) 0%, transparent 50%),
                  radial-gradient(circle at 50% 80%, rgba(6, 182, 212, 0.03) 0%, transparent 60%),
                  var(--bg-main);
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(241, 240, 247, 0.8);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
      max-width: 180px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 30px;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
    }

    .btn-candy-primary {
      background: linear-gradient(135deg, #ff5e7e 0%, #ff8e53 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 94, 126, 0.3);
    }

    .btn-candy-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 94, 126, 0.45);
      color: #ffffff;
    }

    .btn-candy-secondary {
      background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
    }

    .btn-candy-secondary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #e5e7eb;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Section 通用 */
    .section-block {
      padding: 70px 0;
      position: relative;
    }

    .section-block.alt-bg {
      background: #ffffff;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #111827;
      margin-bottom: 12px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero (无图片) */
    .hero-section {
      padding: 60px 0 70px;
      position: relative;
    }

    .hero-wrapper {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 18px;
      background: linear-gradient(90deg, #ffeef2, #eef2ff);
      color: #4f46e5;
      font-weight: 700;
      font-size: 13px;
      border-radius: 30px;
      border: 1px solid rgba(99, 102, 241, 0.2);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 34px;
      font-weight: 900;
      color: #111827;
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #ff5e7e 0%, #6366f1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 35px;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }

    .hero-cta-group .btn {
      padding: 14px 36px;
      font-size: 16px;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .metric-item {
      text-align: center;
      padding: 10px;
      border-right: 1px solid var(--border-color);
    }

    .metric-item:last-child {
      border-right: none;
    }

    .metric-value {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .metric-value.alt-color {
      color: var(--secondary);
    }

    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 平台支持模型标签云 */
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      margin-top: 25px;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid #e5e7eb;
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      color: #374151;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    }

    /* 网格卡片通用 */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

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

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

    .candy-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .candy-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .card-top {
      margin-bottom: 16px;
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 16px;
      font-weight: bold;
    }

    .card-icon.pink { background: #ffeef2; color: #ff5e7e; }
    .card-icon.blue { background: #eef2ff; color: #6366f1; }
    .card-icon.yellow { background: #fef3c7; color: #d97706; }
    .card-icon.cyan { background: #ecfeff; color: #0891b2; }
    .card-icon.green { background: #d1fae5; color: #059669; }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #111827;
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .card-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 12px;
      background: #f3f4f6;
      color: #4b5563;
      margin-top: 12px;
    }

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

    .flow-step {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .flow-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ff5e7e, #ff8e53);
      color: #ffffff;
      font-weight: 800;
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    /* 对比评测模块 */
    .rating-banner {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .score-big {
      font-size: 48px;
      font-weight: 900;
      line-height: 1;
      color: #ffd166;
    }

    .score-info h4 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .score-info p {
      font-size: 14px;
      opacity: 0.9;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .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 var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: #f9fafb;
      font-weight: 700;
      color: #111827;
    }

    .compare-table td.highlight {
      background: #fff8f9;
      font-weight: 700;
      color: var(--primary);
    }

    /* 案例展示区图片容器 */
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .media-card .img-box {
      width: 100%;
      overflow: hidden;
      background: #f3f4f6;
    }

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

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

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

    /* 评论板块 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }

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

    .avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ff5e7e, #6366f1);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-meta h5 {
      font-size: 15px;
      font-weight: 700;
      color: #111827;
    }

    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    .review-stars {
      color: #ffb800;
      font-size: 13px;
      margin-bottom: 8px;
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-question {
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 700;
      color: #111827;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 20px;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      background: #fafafa;
    }

    .faq-answer-inner {
      padding: 16px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid var(--border-color);
    }

    /* 文章列表 */
    .article-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
    }

    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-tag {
      padding: 8px 16px;
      background: #f3f4f6;
      border-radius: 20px;
      font-size: 13px;
      color: #374151;
      font-weight: 600;
    }

    .article-link-tag:hover {
      background: var(--primary-light);
      color: var(--primary);
    }

    /* 表单区域 */
    .form-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      padding: 40px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .contact-info-panel h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 16px;
      color: #111827;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-top: 20px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .contact-list strong {
      color: #111827;
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: #374151;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #d1d5db;
      border-radius: 8px;
      outline: none;
      transition: border-color 0.2s ease;
      background: #ffffff;
      color: #111827;
    }

    .form-control:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #111827;
      color: #9ca3af;
      padding: 50px 0 30px;
      font-size: 14px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

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

    .footer-col p {
      line-height: 1.7;
      margin-bottom: 12px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul li a:hover {
      color: #ffffff;
    }

    .friend-links-bar {
      border-top: 1px solid #1f2937;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-bar strong {
      color: #d1d5db;
      margin-right: 12px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .friend-links-bar a {
      color: #9ca3af;
      margin-right: 14px;
      display: inline-block;
      margin-bottom: 8px;
    }

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

    .footer-bottom {
      border-top: 1px solid #1f2937;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: #6b7280;
    }

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      background: #ffffff;
      border-radius: 50px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      padding: 10px 18px;
      display: flex;
      align-items: center;
      gap: 10px;
      border: 1px solid var(--border-color);
      cursor: pointer;
    }

    .float-kefu-qr {
      position: absolute;
      bottom: 60px;
      right: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 12px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.2);
      display: none;
      text-align: center;
      width: 140px;
    }

    .float-kefu:hover .float-kefu-qr {
      display: block;
    }

    .float-kefu-qr img {
      width: 100%;
      height: auto;
      border-radius: 6px;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .grid-4, .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .form-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .grid-2, .grid-3, .grid-4, .workflow-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
      }
      .metric-item:nth-child(3), .metric-item:nth-child(4) {
        border-bottom: none;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 26px;
      }
    }