:root {
      --blue: #1890FF;
      --text: #1f2a37;
      --muted: #5f6b7a;
      --bg: #FCFDFF;
      --card: rgba(255, 255, 255, 0.86);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background: #fff;
    }
    .container {
      width: min(1920px, 100%);
      margin: 0 auto;
      padding: 0 240px;
    }

/* Header */
    .header {
      height: 60px;
      border-bottom: 1px solid #e8edf3;
      background: #fff;
    }
    .header .container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: .5px;
      white-space: nowrap;
    }
    .nav {
      display: flex;
      gap: 56px;
      font-size: 16px;
      font-weight: 600;
    }
    .nav a {
      text-decoration: none;
      color: #111827;
      white-space: nowrap;
    }
    .nav-item {
      position: relative;
      display: flex;
      align-items: center;
      height: 64px;
    }
    .nav-item > a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 100%;
    }
    .nav-item.dropdown > a::after {
      content: "";
      width: 7px;
      height: 7px;
      border-right: 2px solid #4b5563;
      border-bottom: 2px solid #4b5563;
      transform: rotate(45deg) translateY(-2px);
      transition: transform .2s ease;
    }
    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%) translateY(0);
      min-width: 260px;
      padding: 10px 0;
      background: #fff;
      border: 1px solid #e6ebf1;
      border-radius: 10px;
      box-shadow: 0 12px 28px rgba(16, 24, 40, .12);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
      z-index: 30;
    }
    .dropdown-menu a {
      display: block;
      padding: 10px 16px;
      font-size: 14px;
      line-height: 1.5;
      color: #374151;
      white-space: nowrap;
    }
    .dropdown-menu a:hover {
      background: #f5f9ff;
      color: #1677ff;
    }
    .nav-item.dropdown:hover .dropdown-menu,
    .nav-item.dropdown:focus-within .dropdown-menu {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateX(-50%) translateY(0);
    }
    .nav-item.dropdown:hover > a::after,
    .nav-item.dropdown:focus-within > a::after {
      transform: rotate(225deg) translateY(2px);
    }
    .actions { display: flex; gap: 18px; }
    .btn {
      height: 40px;
      border-radius: 8px;
      padding: 0 30px;
      border: 1px solid var(--blue);
      background: #fff;
      color: var(--blue);
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      white-space: nowrap;
    }
    .btn.primary {
      background: var(--blue);
      color: #fff;
    }

/* Footer */
    .footer {
      background: #f1f3f5;
      padding: 46px 0 12px;
      color: #323b46;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2.2fr 1fr 1fr 1fr;
      gap: 24px;
      padding-bottom: 26px;
      border-bottom: 1px solid #dfe3e8;
    }
    .footer h4 {
      font-size: 18px;
      margin-bottom: 12px;
      white-space: nowrap;
    }
    .footer p, .footer li {
      font-size: 14px;
      line-height: 2.1;
      color: #333333;
      list-style: none;
      white-space: nowrap;
    }
    .footer a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }
    .footer a:hover {
      color: #1677ff;
    }
    .footer .contact-start {
      margin-top: 10px;
    }
    .qr {
      width: 132px;
      height: 132px;
      background: url("/img/conact.png") center/cover;
    }
    .copyright {
      text-align: center;
      padding-top: 20px;
      font-size: 14px;
      color: #979797;
      white-space: nowrap;
    }

    
    .toolbar-item-top {
      display: none;
      cursor: pointer;
      position: fixed;
      z-index: 9999;
      bottom: 150px;
      right: 20px;
    }