:root {
  --bg: #0f1115;
  --bg-soft: #161a21;
  --border: #262c37;
  --text: #e7eaf0;
  --muted: #9aa4b5;
  --accent: #5b9dff;
  --accent-soft: rgba(91, 157, 255, 0.12);
  --max: 720px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-soft: #f5f7fa;
    --border: #e2e6ed;
    --text: #14181f;
    --muted: #5c6675;
    --accent: #1f6feb;
    --accent-soft: rgba(31, 111, 235, 0.08);
  }
}

* { 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", Inter, Roboto,
    Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

.brand span { color: var(--accent); }

.nav { display: flex; gap: 20px; }

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a[aria-current="page"] { color: var(--text); }

/* Main */
main {
  flex: 1 0 auto;
  padding: 64px 0 80px;
}

h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
}

h2 {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
}

p { margin: 0 0 18px; }

.lead {
  font-size: 1.12rem;
  color: var(--muted);
  margin-bottom: 32px;
}

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

.badge {
  display: inline-block;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 5px 14px;
  margin-bottom: 24px;
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 32px 0;
}

.card p:last-child { margin-bottom: 0; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.btn {
  display: inline-block;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Footer */
.site-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}