:root {
            --bg-primary: #121212;
            --bg-secondary: #1e1e1e;
            --bg-tertiary: #2d2d2d;
            --card-bg: #1e1e1e;
            --text-primary: #ffffff;
            --text-secondary: #bbbbbb;
            --text-tertiary: #888888;
            --btn-primary: #ff4466;
            --btn-hover: #ff2a51;
            --tag-bg: #2d2d2d;
            --radius: 8px;
            --gap: 20px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

body {
  background: #1a1a1a;
  color: #333;
}

        /* 头部样式 */
        header {
            position: sticky;
            top: 0;
            z-index: 999;
           box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
            background: #1e1e1e;
            color: white;
            padding: 15px 0;
        }
        .header-content {
            max-width: 1200px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            margin: 0 auto;
            padding: 0 15px;
            gap: 15px;
        }
        .logo {
            font-size: 22px;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        .logo img {
            height: 28px;
            margin-right: 10px;
            vertical-align: middle;
        }
        .nav a {
            color: white;
            text-decoration: none;
            margin-left: 20px;
            transition: color 0.3s;
        }
        .nav a:hover {
            color: #3498db;
        }
        .nav a.active {
            color: #3498db;
            font-weight: bold;
        }
        @media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}
        .container {
            max-width: 1700px;
            margin: 0 auto;
            padding: 0 15px;
        }
textarea {
  min-height: 100px;
  resize: vertical;
}