* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

:root {
  --brand: #a8b4c7; /* bluish gray accent */
  --bg: #1f232a; /* anthracite base */
  --text: #e5e7eb; /* light text */
  --muted: #a5acb8; /* muted on dark */
  --surface: #2a2f36; /* elevated surfaces */
  --border: #3a414b; /* subtle borders */
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(64, 72, 84, 0.92);
  backdrop-filter: saturate(160%) blur(6px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 28px; height: 28px; }
.name { font-weight: 600; letter-spacing: 0.2px; }

.site-nav a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.site-nav a:hover { color: #fff; }

.hero {
  padding: 64px 0 40px;
  background: linear-gradient(180deg, #242932 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}
.hero h1 { font-size: 40px; margin: 0 0 12px; }
.lead { font-size: 18px; color: var(--muted); max-width: 70ch; }
.actions { margin-top: 20px; }

.button {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}
.button.primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #0f1318; /* dark text on light gray */
}
.button.primary:hover { filter: brightness(0.95); }

.section { padding: 40px 0; }
.card { border: 1px solid var(--border); border-radius: 12px; padding: 16px; background: var(--surface); }
.two-col { display: grid; grid-template-columns: 1.75fr 1fr; gap: 24px; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }

.note { color: var(--muted); font-size: 14px; margin-top: 8px; }

a { color: var(--brand); }
a:hover { filter: brightness(1.15); }

.site-footer { border-top: 1px solid var(--border); background: var(--surface); color: var(--text); }
.site-footer .container { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.footer-links a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.footer-links a.disabled { pointer-events: none; opacity: 0.6; }