/* 励洋辅助站 - 全站公共样式（主题变量 / 基础重置 / 导航栏 / 主体容器）
   各页面通过 <link> 引入；页面特有样式仍留在各自文件中 */
:root {
    --primary: #f97316;
    --primary-dark: #ea580c;
    --primary-light: #ffedd5;
    --text: #3f3f46;
    --text-light: #71717a;
    --bg: #fff7ed;
    --white: #ffffff;
  }

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

  body {
    font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
  }

  /* ===== 导航栏 ===== */
  .navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 32px;
    background: var(--white);
    box-shadow: 0 1px 3px rgba(249, 115, 22, 0.08);
  }

  .navbar .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
  }

  .navbar .logo img {
    height: 36px;
    width: auto;
    display: block;
    border-radius: 3px;
  }

  .nav-menus { display: flex; align-items: center; gap: 8px; }

  .dropdown { position: relative; }

  .dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background: transparent;
    font-size: 15px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
  }

  .dropdown-btn .arrow { font-size: 11px; transition: transform 0.2s; }

  .dropdown:hover .dropdown-btn {
    background: var(--primary-light);
    color: var(--primary-dark);
  }

  .dropdown:hover .dropdown-btn .arrow { transform: rotate(180deg); }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 180px;
    background: var(--white);
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  }

  .dropdown-menu::before {
    content: "";
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
  }

  .dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .dropdown-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: 3px;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
  }

  .dropdown-menu a:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
  }

  .dropdown-menu a .tag {
    float: right;
    font-size: 11px;
    color: var(--text-light);
    padding-top: 2px;
  }

  /* ===== 主体 ===== */
  .main {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 24px;
  }