:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1f2530;
  --text: #e7eaf0;
  --muted: #a4adbd;
  --accent: #6ea8fe;
  --accent-2: #4d7fe0;
  --border: #2a3140;
  --warn-bg: #2a2113;
  --warn-border: #6b561f;
  --warn-text: #f0d68a;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  font-size: 17px;
}

a { color: var(--accent); }
a:hover { color: var(--accent-2); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #0b0d11;
  padding: 0.6rem 1rem;
  border-radius: 0 0 6px 0;
  z-index: 10;
}
.skip-link:focus { left: 0; }

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.1rem;
}
header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.2px;
}
.brand span { color: var(--accent); }

nav.site ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.9rem;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
}
nav.site a { text-decoration: none; }

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.6rem 1.1rem 3rem;
}

h1 { font-size: 1.7rem; line-height: 1.25; margin: 0.2rem 0 0.6rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.6rem; border-top: 1px solid var(--border); padding-top: 1.3rem; }
h3 { font-size: 1.05rem; margin: 1.3rem 0 0.4rem; }

.lead { font-size: 1.15rem; color: var(--text); }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; color: var(--muted); }

.hero {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem 1.4rem;
  margin-bottom: 1.4rem;
}

.badge {
  display: inline-block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.8rem;
}

.note {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-text);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin: 1.2rem 0;
}
.note strong { color: var(--warn-text); }

.todo {
  background: #20140f;
  border: 1px dashed #8a4b2e;
  color: #f2b48c;
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin: 1.2rem 0;
  font-size: 0.95rem;
}
.todo code { color: #ffd9c2; }

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 1.4rem 0;
}
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--text);
}
.card:hover { border-color: var(--accent-2); }
.card .t { font-weight: 600; margin-bottom: 0.2rem; }
.card .d { color: var(--muted); font-size: 0.9rem; }

ul.feat { padding-left: 1.1rem; }
ul.feat li { margin: 0.35rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
th { background: var(--surface-2); }

code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05rem 0.35rem;
  font-size: 0.9em;
}

details {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.2rem 1rem;
  margin: 0.7rem 0;
  background: var(--surface);
}
details summary {
  cursor: pointer;
  font-weight: 600;
  padding: 0.7rem 0;
}

footer.site {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
}
footer.site .wrap { padding-top: 1.4rem; padding-bottom: 2rem; }
footer.site nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  padding: 0;
  margin: 0 0 0.7rem;
}
footer.site a { text-decoration: none; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .cards { grid-template-columns: 1fr; }
  h1 { font-size: 1.45rem; }
}