:root{--brand:#4F46E5;--brand-dark:#3730A3;--bg:#F7F7FB;--card:#FFFFFF;--text:#1B1D29;--muted:#5B5F73;--line:#E6E6F0;--tint:#E7E6FF}
@media (prefers-color-scheme:dark){:root{--brand:#8B85FF;--brand-dark:#B3AEFF;--bg:#0F1018;--card:#171925;--text:#ECECF4;--muted:#A3A6B8;--line:#2A2D3D;--tint:#24224A}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:720px;margin:0 auto;padding:40px 16px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:28px}
header img{width:56px;height:56px;border-radius:14px}
header a{color:inherit;text-decoration:none}
.name{font-weight:700;font-size:20px;line-height:1.2}
.by{color:var(--muted);font-size:14px}
h1{font-size:30px;line-height:1.2;margin:0 0 6px}
h2{font-size:19px;margin:32px 0 8px}
.date{color:var(--muted);font-size:14px;margin:0 0 24px}
.summary{background:var(--tint);border-radius:14px;padding:18px 20px;margin:0 0 8px}
.summary h2{margin-top:0}
ul{padding-left:22px}li{margin:4px 0}
a{color:var(--brand)}
code{font-size:14px;background:var(--line);padding:1px 6px;border-radius:6px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 22px}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;padding:10px 18px;border-radius:999px;font-weight:600;margin-top:8px}
@media (prefers-color-scheme:dark){.btn{color:#0F1018}}
footer{color:var(--muted);font-size:14px;margin-top:48px;border-top:1px solid var(--line);padding-top:16px}