/* 基础重置（简化版） */
* { box-sizing: border-box; }
html, body, h1, h2, h3, h4, h5, h6, p, ul, ol { margin: 0; padding: 0; }
body { line-height: 1.5; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif; }
a { color: inherit; }