:root{--ink: #1a202c;--muted: #718096;--paper: #ffffff;--bg: #f7f6f3;--line: #e2e0dc;--accent: #b45309}*{box-sizing:border-box}html,body{margin:0;padding:0}html{background-color:var(--bg)}body{font-family:Microsoft YaHei,微软雅黑,PingFang SC,Helvetica Neue,Arial,sans-serif;color:var(--ink);line-height:1.6;background-color:var(--bg)}body,button,input,select,textarea{font-family:Microsoft YaHei,微软雅黑,PingFang SC,Helvetica Neue,Arial,sans-serif}code,pre,kbd,.monospace{font-family:JetBrains Mono,Courier New,monospace}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;padding:0;font:inherit}input,select,textarea{border:none;padding:0;background:none;font:inherit}ul,ol{list-style:none;padding:0;margin:0}