:root{
  --bg:#f4f7f8;--fg:#1f2a2e;--muted:#6b8089;--accent:#2b7a8c;
  --accent-dark:#1f5c6b;--line:#dde7ea;--card:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.65 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:700px;margin:0 auto;padding:48px 20px 72px}
header{margin-bottom:36px}
header h1{margin:0;font-size:30px;font-weight:700;letter-spacing:-.5px}
header h1 a{color:var(--fg);text-decoration:none}
header h1 a:hover{color:var(--accent)}
.tag{color:var(--muted);font-size:15px;margin-top:4px}
nav{margin-top:16px;display:flex;gap:18px;font-size:14px}
nav a{color:var(--accent);text-decoration:none;font-weight:600}
nav a:hover{text-decoration:underline}
nav a[aria-current="page"]{color:var(--muted)}

.post{padding:20px 0;border-bottom:1px solid var(--line)}
.post:last-of-type{border-bottom:0}
.post h2{margin:0 0 6px;font-size:21px;font-weight:600;line-height:1.3}
.post h2 a{color:var(--fg);text-decoration:none}
.post h2 a:hover{color:var(--accent)}
.date{color:var(--muted);font-size:13px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}
.post p{margin:0 0 12px}
.post p:last-child{margin-bottom:0}

.full h1{font-size:26px;line-height:1.25;margin:0 0 10px}
.full .date{margin-bottom:22px}
.full p{margin:0 0 16px;font-size:17px;line-height:1.7}
.full blockquote{margin:20px 0;padding:10px 18px;border-left:4px solid var(--accent);
  background:#eef4f6;color:#3a4a50;border-radius:0 6px 6px 0}
.full ul{padding-left:22px;margin:16px 0}
.full li{margin:6px 0}
.back{display:inline-block;margin-top:24px;color:var(--accent);text-decoration:none;font-weight:600;font-size:15px}
.back:hover{text-decoration:underline}

footer{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  color:var(--muted);font-size:13px;text-align:center}
@media(max-width:560px){.wrap{padding:32px 16px 56px}header h1{font-size:26px}}