/* ponytail: 单文件样式，够用就好 */
:root { --ink:#1c1c1e; --muted:#6b6b70; --line:#e6e6ea; }
* { box-sizing:border-box; }
body { margin:0; font:17px/1.65 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif; color:var(--ink); background:#fdfdfc; }
header { padding:22px 24px; border-bottom:1px solid var(--line); }
header a { font-weight:600; letter-spacing:.02em; text-decoration:none; color:var(--ink); }
main { max-width:700px; margin:0 auto; padding:40px 24px 80px; }
h1 { font-size:1.9rem; line-height:1.25; margin:0 0 .6em; }
h2 { font-size:1.15rem; margin:2em 0 .5em; }
p { margin:1em 0; }
a { color:#0b57d0; }
.list { padding-left:1.1em; }
.list li { margin:.5em 0; }
footer { border-top:1px solid var(--line); padding:20px 24px; color:var(--muted); font-size:.9rem; }