:root {
  --bg: #0F1410;
  --bg-elev: #161B17;
  --border: rgba(255, 255, 255, 0.08);
  --text: #ECEFEC;
  --text-muted: rgba(236, 239, 236, 0.62);
  --primary: #16A34A;
  --primary-deep: #0F7B36;
  --gold: #F59E0B;
  --danger: #EF4444;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #F8F9F7;
    --bg-elev: #FFFFFF;
    --border: rgba(0, 0, 0, 0.08);
    --text: #18211C;
    --text-muted: rgba(24, 33, 28, 0.62);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 22px 80px;
}

/* Header */
.hero { text-align: center; padding: 24px 0 36px; }
.brand-dot {
  width: 64px; height: 64px;
  border-radius: 18px;
  background: var(--primary);
  margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 32px; font-weight: 900;
  box-shadow: 0 8px 24px rgba(22, 163, 74, 0.3);
}
.hero h1 { font-size: 38px; margin: 0 0 6px; letter-spacing: -1.2px; font-weight: 900; }
.tagline { color: var(--text-muted); margin: 0; font-size: 15px; }

/* Index page link cards */
.links { display: grid; gap: 14px; margin: 30px 0 50px; }
.card {
  display: block;
  padding: 22px;
  border-radius: 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  transition: transform 0.12s ease, border-color 0.12s ease;
  position: relative;
}
.card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--primary);
}
.card h2 { margin: 0 0 6px; font-size: 18px; letter-spacing: -0.3px; }
.card p { margin: 0; color: var(--text-muted); font-size: 14px; padding-right: 28px; }
.card .arrow {
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  color: var(--primary); font-size: 22px; font-weight: 900;
}

/* Contact / footer */
.contact {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}
.contact h3 { color: var(--text); font-size: 13px; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 8px; }
.contact p { margin: 4px 0; }
.version { font-size: 12px; opacity: 0.7; margin-top: 12px; }

/* Document pages */
.doc {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 32px 28px;
}
.doc .doc-back {
  display: inline-block;
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 18px;
  font-weight: 700;
}
.doc h1 {
  font-size: 28px;
  letter-spacing: -0.6px;
  margin: 0 0 6px;
}
.doc .lead {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 28px;
}
.doc h2 {
  font-size: 17px;
  margin: 28px 0 8px;
  color: var(--text);
  letter-spacing: -0.2px;
}
.doc p, .doc li { font-size: 14.5px; line-height: 1.65; color: var(--text-muted); }
.doc ul { padding-left: 22px; }
.doc strong { color: var(--text); }
.doc .updated {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}