:root{color-scheme:light}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,Noto Sans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;margin:2rem}main{max-width:860px;padding:1.25rem 1.5rem;border:1px solid #e5e7eb;border-radius:12px}code{padding:.12rem .35rem;border-radius:6px}code,pre{background:#f3f4f6}pre{padding:.9rem 1rem;border-radius:12px;overflow-x:auto}pre code{background:transparent;padding:0}input[type=file]{margin:.75rem 0}button{padding:.55rem .9rem;border-radius:10px;border:1px solid #d1d5db;background:#111827;color:white;cursor:pointer}button:hover{opacity:.92}a{color:#2563eb}.muted{color:#6b7280}hr{border:none;border-top:1px solid #e5e7eb;margin:1.25rem 0}