:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --text: #e8eef6;
  --muted: #9db0c7;
  --accent: #5b9fd4;
  --accent-soft: rgba(91, 159, 212, 0.15);
  --border: rgba(157, 176, 199, 0.18);
  --ok: #6bcf8e;
  --radius: 14px;
  --max: 720px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1c2a40 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header.appbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.01em;
}
.brand:hover { text-decoration: none; }

.logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, #5b9fd4, #3d6f9a);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(91, 159, 212, 0.25);
  font-size: 0.85rem;
  font-weight: 700;
}

nav.links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.22);
}

h1 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  line-height: 1.25;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.6rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.02rem;
  margin: 1.25rem 0 0.4rem;
  color: var(--text);
}

p, li { color: var(--muted); }
p.lead {
  font-size: 1.05rem;
  color: var(--text);
  margin: 0.4rem 0 1rem;
}

ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }

.badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(91, 159, 212, 0.35);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
}

.feature {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.05rem;
}
.feature strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.25rem;
}
.feature span { color: var(--muted); font-size: 0.95rem; }

.ok-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  margin-right: 0.4rem;
  vertical-align: middle;
}

footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}

.contact {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  background: var(--accent-soft);
  border: 1px solid rgba(91, 159, 212, 0.28);
  border-radius: 12px;
}
.contact strong { color: var(--text); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(255,255,255,0.06);
  padding: 0.1em 0.35em;
  border-radius: 5px;
}