:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6}body{color:#222;background:#f7f7f5;margin:0}main{max-width:640px;margin:0 auto;padding:1.5rem 1rem 4rem}h1{font-size:1.5rem}h2{border-left:4px solid #d33;margin-top:2rem;padding-left:.5rem;font-size:1.15rem}.card{background:#fff;border-radius:10px;margin:.8rem 0;padding:1rem 1.2rem;box-shadow:0 1px 3px #00000014}.card h3{margin:0 0 .4rem;font-size:1.05rem}.one-liner{font-weight:600}.tip{background:#fdf6e3;border-radius:6px;padding:.4rem .6rem}.meta{color:#888;font-size:.85rem}