:root {
  --bg: #07090f;
  --panel: #0e1320;
  --line: #1e2a3f;
  --text: #dfe8f5;
  --muted: #8a99b3;
  --accent: #38f2c8;
  --warn: #ff5d73;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 500px at 50% -10%, #12203a 0%, var(--bg) 60%) no-repeat, var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
a:hover { text-decoration: none; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; padding-top: 16px; padding-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.brand { font-weight: 700; letter-spacing: .04em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { margin-left: 16px; text-decoration: none; color: var(--muted); font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
main { padding: 40px 0 60px; }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 .4rem; color: var(--accent); }
h3 { font-size: 1.05rem; margin: 1.4rem 0 .2rem; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: .95rem; }
.hero { text-align: center; padding: 30px 0 10px; }
.hero p.tag { font-size: 1.15rem; color: var(--muted); max-width: 560px; margin: 10px auto 24px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 10px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; font-weight: 600; }
.btn.solid { background: var(--accent); color: #04110d; }
.btn.off { border-color: var(--line); color: var(--muted); cursor: default; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 4px 20px 18px; margin: 18px 0; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); margin-top: 18px; }
.grid .card { margin: 0; padding: 14px 18px; }
.grid .card h3 { margin-top: 4px; }
details { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; }
footer.site { border-top: 1px solid var(--line); padding: 22px 0 40px; color: var(--muted); font-size: .9rem; }
footer.site a { color: var(--muted); margin-right: 14px; }
code { background: #121a2b; padding: 1px 6px; border-radius: 5px; }
@media (max-width: 480px) { body { font-size: 16px; } h1 { font-size: 1.7rem; } nav a { margin: 0 12px 0 0; } }