/* 基础样式 */:root { --primary-color: #007bff; --secondary-color: #6c757d; --success-color: #28a745; --info-color: #17a2b8; --warning-color: #ffc107; --danger-color: #dc3545; --light-color: #f8f9fa; --dark-color: #343a40; --border-color: #dee2e6;}/* 重置样式 */* { margin: 0; padding: 0; box-sizing: border-box;}body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; line-height: 1.5; color: #333;}a { text-decoration: none; color: inherit;}