* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      background-color: #fbfaf7;
      background-image:
        radial-gradient(circle at 8% 12%, rgba(255, 210, 120, 0.18) 0, transparent 28%),
        radial-gradient(circle at 92% 6%, rgba(90, 180, 255, 0.14) 0, transparent 34%),
        radial-gradient(circle at 50% 96%, rgba(140, 120, 255, 0.10) 0, transparent 40%),
        repeating-linear-gradient(45deg, rgba(0,0,0,0.012) 0 2px, transparent 2px 8px);
      color: #1f2a3a;
      line-height: 1.7;
      min-height: 100vh;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    h1, h2, h3, h4 {
      color: #14202e;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: 0.3px;
    }
    h1 { font-size: 2.4rem; }
    h2 { font-size: 1.9rem; margin-bottom: 0.7rem; }
    h3 { font-size: 1.25rem; }
    p { color: #3b4758; }
    a { text-decoration: none; color: #0d6efd; transition: color .2s; }
    a:hover { color: #0040b0; }
    img { max-width: 100%; height: auto; display: block; }

    /* 按钮系统 —— 涂鸦风圆角 + 彩色描边 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.7rem 1.8rem;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 48px;
      border: 2px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s;
      cursor: pointer;
      background: #ffffff;
      color: #14202e;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      text-decoration: none;
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px -8px rgba(0,0,0,0.15);
    }
    .btn-primary {
      background: #1f2a3a;
      color: #fff6e5;
      border-color: #1f2a3a;
      box-shadow: 4px 4px 0 #ffc857, 0 2px 10px rgba(0,0,0,0.05);
    }
    .btn-primary:hover {
      background: #27364a;
      border-color: #27364a;
      box-shadow: 6px 6px 0 #ffc857;
    }
    .btn-outline {
      background: #ffffff;
      border: 2px solid #1f2a3a;
      color: #1f2a3a;
      box-shadow: 3px 3px 0 rgba(31,42,58,0.15);
    }
    .btn-outline:hover {
      box-shadow: 5px 5px 0 rgba(31,42,58,0.2);
    }
    .btn-accent {
      background: #ffe7b3;
      border-color: #e4b95b;
      color: #1a1f28;
      box-shadow: 3px 3px 0 #c49a3a;
    }

    /* 顶部导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.86);
      backdrop-filter: blur(12px);
      border-bottom: 2px dashed #e3d9c6;
      position: sticky;
      top: 0;
      z-index: 90;
      box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      flex-wrap: wrap;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 6px;
      flex-shrink: 0;
    }
    .brand-logo img {
      height: 38px;
      width: auto;
      border-radius: 8px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links li {
      margin: 0;
    }
    .nav-links a {
      display: block;
      padding: 0.5rem 0.9rem;
      font-size: 0.9rem;
      font-weight: 500;
      color: #1e2a3a;
      border-radius: 30px;
      white-space: nowrap;
      transition: background .2s;
    }
    .nav-links a:hover {
      background: #f1e7d6;
      color: #0b1622;
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .nav-home-link {
      font-size: 0.9rem;
      font-weight: 600;
      padding: 0.5rem 1rem;
      border-radius: 30px;
      background: #1f2a3a;
      color: #fff;
      border: 2px solid #1f2a3a;
    }
    .nav-home-link:hover {
      background: #2e4057;
      color: #fff;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: 2px solid #1f2a3a;
      border-radius: 12px;
      padding: 0.4rem 0.8rem;
      font-size: 1.5rem;
      font-weight: 700;
      line-height: 1;
      cursor: pointer;
      color: #1f2a3a;
    }

    /* 首屏 Hero — 无图片 纯CSS */
    .hero {
      padding: 3.5rem 0 3rem;
      position: relative;
      overflow: hidden;
    }
    .hero-inner {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 2.5rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.6rem;
      line-height: 1.25;
      margin-bottom: 1.2rem;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      background: linear-gradient(145deg, #e0a82e, #c27e1a);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
    }
    .hero-sub {
      font-size: 1.15rem;
      color: #3a4b5e;
      margin-bottom: 2rem;
      max-width: 560px;
    }
    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 2rem;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
      list-style: none;
      padding: 0;
    }
    .hero-tags li {
      background: rgba(255, 255, 255, 0.8);
      border: 1.5px solid #ded3c0;
      padding: 0.3rem 1rem;
      border-radius: 30px;
      font-size: 0.8rem;
      font-weight: 500;
      color: #2e3d4e;
      box-shadow: 1px 1px 0 #ece3d6;
    }
    .hero-visual {
      display: grid;
      gap: 1rem;
      animation: float 6s ease-in-out infinite;
    }
    .stat-card {
      background: #ffffff;
      border: 2px solid #1f2a3a;
      border-radius: 24px;
      padding: 1.2rem 1.4rem;
      box-shadow: 5px 5px 0 #ffe1a8;
      transition: transform .2s;
    }
    .stat-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: 7px 7px 0 #ffe1a8;
    }
    .stat-card .num {
      font-size: 2rem;
      font-weight: 800;
      color: #14202e;
      line-height: 1.2;
    }
    .stat-card .label {
      font-size: 0.8rem;
      color: #4f5e72;
      font-weight: 500;
      letter-spacing: 0.4px;
    }
    .stat-card .sub {
      font-size: 0.75rem;
      color: #a07e3f;
      margin-top: 4px;
      font-weight: 500;
    }
    @keyframes float {
      0%,100% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
    }

    /* 普通区块 */
    .section {
      padding: 3.5rem 0;
    }
    .section-header {
      text-align: center;
      margin-bottom: 2.6rem;
    }
    .section-header h2 {
      display: inline-block;
      position: relative;
    }
    .section-header h2::after {
      content: '';
      position: absolute;
      left: 10%;
      bottom: -6px;
      width: 80%;
      height: 6px;
      background: #ffc857;
      border-radius: 4px;
      opacity: 0.6;
    }
    .section-header p {
      max-width: 680px;
      margin: 1rem auto 0;
      color: #4e5b6a;
    }

    /* 卡片通用 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1.8rem;
      align-items: stretch;
    }
    .card {
      background: #ffffff;
      border: 2px solid #e5dccf;
      border-radius: 28px;
      padding: 1.8rem 1.5rem;
      box-shadow: 3px 3px 0 rgba(200, 180, 150, 0.2);
      transition: transform .2s, box-shadow .2s, border-color .2s;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: #c9b69c;
      box-shadow: 6px 6px 0 rgba(255, 200, 120, 0.3);
    }
    .card h3 {
      margin-bottom: 0.6rem;
      font-size: 1.2rem;
    }
    .card p {
      font-size: 0.9rem;
      color: #4b5a6b;
      flex: 1;
    }

    /* 平台介绍 - 双列 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
      align-items: start;
    }
    .intro-text p {
      margin-bottom: 1rem;
    }
    .intro-highlight {
      background: #fdf8ef;
      border: 2px dashed #e3c896;
      border-radius: 28px;
      padding: 1.8rem;
    }

    /* 数据指标条 */
    .metrics-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-around;
      gap: 1.5rem;
      background: #ffffffc7;
      border: 2px solid #e2d7c6;
      border-radius: 50px;
      padding: 1.2rem 2rem;
      backdrop-filter: blur(4px);
    }
    .metric-item {
      text-align: center;
    }
    .metric-item .value {
      font-size: 1.8rem;
      font-weight: 800;
      color: #14202e;
    }
    .metric-item .tag {
      font-size: 0.8rem;
      color: #5d6d7e;
    }

    /* 服务能力卡片 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 1.2rem;
    }
    .service-item {
      background: #fff;
      border-radius: 20px;
      border: 1.5px solid #e2d6c4;
      padding: 1.2rem 1rem;
      font-weight: 600;
      font-size: 0.95rem;
      display: flex;
      align-items: center;
      gap: 8px;
      box-shadow: 2px 2px 0 #f0e7da;
      transition: 0.2s;
    }
    .service-item:hover {
      background: #fcf7ef;
      border-color: #d4b88a;
    }

    /* 流程步骤 */
    .steps-container {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      justify-content: center;
    }
    .step {
      flex: 1 1 160px;
      background: #ffffff;
      border-radius: 60px 20px 20px 60px;
      padding: 1rem 1.5rem 1rem 2.5rem;
      border-left: 8px solid #ffc857;
      box-shadow: 2px 2px 0 #ede5d8;
      position: relative;
      font-weight: 600;
      font-size: 0.95rem;
    }
    .step::before {
      content: '✔';
      position: absolute;
      left: 8px;
      color: #c08e2c;
      font-weight: 700;
    }

    /* 对比评测表格 */
    .table-wrap {
      overflow-x: auto;
      border-radius: 24px;
      border: 2px solid #e1d5c2;
      background: #ffffff;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
      min-width: 600px;
    }
    th {
      background: #f2e9db;
      text-align: left;
      padding: 1rem 1.2rem;
      font-weight: 700;
      color: #1a2632;
      border-bottom: 2px solid #d8c9b4;
    }
    td {
      padding: 1rem 1.2rem;
      border-bottom: 1px solid #efe7dc;
      color: #384857;
    }
    tr:last-child td {
      border-bottom: none;
    }
    .rating-stars {
      color: #dba12e;
      letter-spacing: 2px;
    }

    /* FAQ 折叠 */
    .faq-list {
      display: grid;
      gap: 0.8rem;
    }
    .faq-item {
      background: #fff;
      border: 1.5px solid #e2d7c7;
      border-radius: 18px;
      overflow: hidden;
    }
    .faq-question {
      padding: 1rem 1.5rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fffffff2;
      transition: background .2s;
    }
    .faq-question:hover {
      background: #fbf5ec;
    }
    .faq-answer {
      display: none;
      padding: 0 1.5rem 1.2rem;
      color: #425263;
      border-top: 1px solid #ede4d8;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-question {
      background: #fdf7ef;
    }
    .faq-icon {
      font-size: 1.3rem;
      font-weight: 400;
      transform: rotate(0);
      transition: transform .2s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.5rem;
    }
    .review-card {
      background: #ffffff;
      border-radius: 24px;
      padding: 1.5rem;
      border: 2px solid #e8dfd2;
      box-shadow: 1px 2px 0 #f5ede2;
    }
    .review-card .name {
      font-weight: 700;
      margin-top: 0.8rem;
      color: #1e2d3e;
    }
    .review-card .role {
      font-size: 0.75rem;
      color: #7b8a9b;
    }

    /* 案例 & 图片区 (非首屏) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.4rem;
    }
    .case-item {
      background: #eee7dd;
      border-radius: 20px;
      overflow: hidden;
      border: 2px solid #d6c8b6;
      transition: transform .2s;
    }
    .case-item:hover {
      transform: scale(1.02);
    }

    /* 文章列表 */
    .article-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1rem;
    }
    .article-list a {
      background: #fff;
      border: 1.5px solid #dfd3c2;
      border-radius: 16px;
      padding: 0.9rem 1.2rem;
      font-size: 0.9rem;
      display: block;
      color: #1e3b5c;
      font-weight: 500;
    }
    .article-list a:hover {
      background: #f7f0e5;
    }

    /* 表单 */
    .form-card {
      background: #ffffff;
      border-radius: 36px;
      border: 2px solid #d9ccba;
      padding: 2rem 2rem;
      box-shadow: 8px 8px 0 #f2e5d3;
    }
    .form-group {
      margin-bottom: 1.2rem;
    }
    .form-group label {
      display: block;
      font-weight: 600;
      font-size: 0.9rem;
      margin-bottom: 0.3rem;
    }
    .form-group input, .form-group select, .form-group textarea {
      width: 100%;
      padding: 0.8rem 1rem;
      border-radius: 30px;
      border: 1.5px solid #d8cdbc;
      background: #fefcf9;
      font-family: inherit;
      font-size: 0.95rem;
      transition: border .2s, box-shadow .2s;
    }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
      outline: none;
      border-color: #bd9e6b;
      box-shadow: 0 0 0 3px #ffeec8;
    }
    .form-group textarea {
      min-height: 110px;
      resize: vertical;
    }

    /* 友情链接 / 标签云 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
      justify-content: center;
    }
    .tag-cloud a {
      background: #fff;
      border-radius: 40px;
      padding: 0.5rem 1.4rem;
      border: 1.5px solid #dccfbe;
      font-size: 0.85rem;
      color: #2c3f54;
      font-weight: 500;
      transition: 0.2s;
    }
    .tag-cloud a:hover {
      background: #ffeacf;
      border-color: #ba9d71;
    }

    /* footer */
    .site-footer {
      background: #1f2a36;
      color: #f0e9df;
      padding: 2.2rem 0 1.2rem;
      margin-top: 2rem;
      border-top: 6px solid #ffc857;
    }
    .footer-inner {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr;
      gap: 2rem;
      align-items: start;
    }
    .footer-brand p, .footer-brand a {
      color: #dad2c6;
      font-size: 0.88rem;
      line-height: 1.7;
    }
    .footer-brand a:hover {
      color: #ffcf70;
    }
    .footer-links h4 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .footer-links ul {
      list-style: none;
      display: grid;
      gap: 0.5rem;
    }
    .footer-links a {
      color: #dad2c6;
      font-size: 0.88rem;
    }
    .footer-links a:hover {
      color: #ffcf70;
    }
    .copyright {
      border-top: 1px solid #3f4f5f;
      margin-top: 2rem;
      padding-top: 1.2rem;
      text-align: center;
      font-size: 0.78rem;
      color: #b6b1a8;
    }

    /* 浮动按钮 */
    .float-service {
      position: fixed;
      right: 22px;
      bottom: 32px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-service a {
      background: #fff;
      border-radius: 50%;
      width: 52px;
      height: 52px;
      border: 2px solid #1f2a3a;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 3px 3px 0 #ffc857;
      font-size: 1.5rem;
      color: #1a1f28;
      transition: 0.15s;
    }
    .float-service a:hover {
      transform: scale(1.05);
      background: #fff2d9;
    }
    .top-btn {
      cursor: pointer;
      background: #1f2a3a;
      color: #fff !important;
    }

    /* 滚动动画 */
    .fade-up {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-inner {
        grid-template-columns: 1fr;
      }
      .hero-visual {
        max-width: 400px;
        margin: 0 auto;
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }
      h1 { font-size: 2.1rem; }
    }
    @media (max-width: 800px) {
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        background: white;
        border-radius: 24px;
        margin-top: 0.6rem;
        border: 2px solid #e3d9c6;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links a {
        padding: 0.7rem 1.5rem;
        border-radius: 0;
      }
      .header-inner {
        padding: 0.5rem 0;
      }
      .nav-right {
        margin-left: auto;
      }
      .section {
        padding: 2.5rem 0;
      }
      h1 { font-size: 1.9rem; }
      h2 { font-size: 1.6rem; }
      .hero { padding: 2rem 0 1.5rem; }
      .metrics-row {
        border-radius: 30px;
        padding: 1rem;
      }
    }
    @media (max-width: 640px) {
      .container { padding: 0 18px; }
      .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
      .review-grid { grid-template-columns: 1fr; }
      .step { flex: 1 1 100%; }
    }
    /* 无图首屏辅助 */
    .no-img-note { display: none; }