:root{
  --max: 980px;
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 16px 55px rgba(0,0,0,.35);
  --ring: 0 0 0 3px rgba(120,240,182,.35);

  /* dark default */
  --bg: #070a10;
  --bg2: #0b1020;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: #ecf3ff;
  --muted: #a4b4cd;
  --border: rgba(255,255,255,.12);
  --link: #86c6ff;
  --accent: #78f0b6;
  --accent2: #b6a6ff;
}

html[data-theme="light"]{
  --bg: #fbfcff;
  --bg2: #f2f6ff;
  --panel: rgba(10,18,30,.04);
  --panel2: rgba(10,18,30,.06);
  --text: #0b1220;
  --muted: #415671;
  --border: rgba(10,18,30,.14);
  --link: #145ef3;
  --accent: #0d8c5b;
  --accent2: #5a3cff;
  --shadow: 0 18px 55px rgba(18,40,70,.18);
  --ring: 0 0 0 3px rgba(13,140,91,.22);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;}
body{
  background:
    radial-gradient(1200px 600px at 20% -10%, color-mix(in srgb, var(--accent2) 18%, transparent), transparent 60%),
    radial-gradient(1000px 600px at 90% 10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  color:var(--text);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial;
  letter-spacing: .1px;
}
a{color:var(--link);text-decoration:none} a:hover{text-decoration:underline}

.container{max-width:var(--max);margin:0 auto;padding:34px 18px;}

.skip{
  position:absolute;left:-999px;top:10px;
  background:var(--panel2);border:1px solid var(--border);
  padding:10px 12px;border-radius:10px;color:var(--text);
}
.skip:focus{left:12px;outline:none;box-shadow:var(--ring)}

header.site{position:sticky;top:0;z-index:20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:var(--max);margin:0 auto;padding:12px 18px;}
.brand{display:flex;flex-direction:column;gap:2px}
.brand b{letter-spacing:0.2px}
.brand small{color:var(--muted)}

.navlinks{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.nav a{color:var(--text)}

.theme{
  appearance:none;
  border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  color:var(--text);
  padding:8px 10px;
  border-radius:999px;
  cursor:pointer;
}
.theme:hover{filter:brightness(1.05)}
.theme:focus{outline:none;box-shadow:var(--ring)}

.badge{display:inline-block;border:1px solid var(--border);background:var(--panel);padding:6px 10px;border-radius:999px;color:var(--muted);font-size:13px}
.card{
  border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border-radius:var(--radius);
  padding:18px;
  box-shadow: var(--shadow);
}

.h1{font-size:44px;line-height:1.08;margin:0 0 10px;letter-spacing:-.6px}
.h2{font-size:22px;margin:24px 0 10px;letter-spacing:-.2px}
.muted{color:var(--muted)}

.grid{display:grid;gap:14px}
@media (min-width: 860px){.grid.cols2{grid-template-columns: 1.15fr .85fr}}

.post-list{display:grid;gap:12px;margin:18px 0 0;padding:0;list-style:none}
.post-list li a{display:block}
.post-meta{color:var(--muted);font-size:13px}

hr{border:0;border-top:1px solid var(--border);margin:26px 0}

footer{border-top:1px solid var(--border);color:var(--muted)}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

.prose{max-width: 72ch}
.prose h1,.prose h2,.prose h3{line-height:1.25}
.prose h1{font-size:38px;margin:6px 0 10px;letter-spacing:-.6px}
.prose h2{font-size:24px;margin:28px 0 10px;letter-spacing:-.2px}
.prose h3{font-size:18px;margin:20px 0 8px}
.prose ul{padding-left:18px}
.prose a{word-break:break-word}
.prose code{background:var(--panel2);border:1px solid var(--border);padding:2px 6px;border-radius:8px}
.prose pre{background: #05070c;border:1px solid var(--border);padding:14px;border-radius:14px;overflow:auto}
html[data-theme="light"] .prose pre{background:#0c1220}

.cta{margin-top:18px;padding:14px 16px;border-radius:12px;border:1px solid color-mix(in srgb,var(--accent) 30%, var(--border));background:color-mix(in srgb,var(--accent) 10%, var(--panel));}
.cta b{color:var(--text)}

.focusable:focus{outline:none;box-shadow:var(--ring)}