:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #21262d;
  --text: #c9d1d9;
  --muted: #7d8590;
  --cyan: #22d3ee;
  --cyan-dim: #164e63;
  --white: #f0f6fc;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

code, .mono {
  font-family: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, monospace;
}

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

/* --- header --- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.site-header .inner {
  max-width: 1060px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header .mark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .3px;
}
.site-header .mark img { width: 26px; height: 26px; }
.site-header nav a {
  color: var(--muted);
  margin-left: 28px;
  font-size: 14px;
  font-weight: 500;
}
.site-header nav a:hover { color: var(--cyan); text-decoration: none; }

/* --- hero --- */
.hero {
  max-width: 1060px;
  margin: 0 auto;
  padding: 80px 24px 64px;
}
.hero h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  max-width: 620px;
}
.hero .lead {
  margin-top: 18px;
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
}
.hero .cta-row {
  margin-top: 28px;
  display: flex;
  gap: 12px;
}
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--cyan);
  color: var(--bg);
}
.btn-primary:hover { background: #06b6d4; text-decoration: none; }
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--muted); text-decoration: none; }

/* --- capabilities --- */
.capabilities {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 64px 24px;
}
.capabilities .inner { max-width: 1060px; margin: 0 auto; }
.capabilities h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--cyan);
  margin-bottom: 28px;
}
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cap-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.cap-card h3 {
  font-size: 16px;
  color: var(--white);
  margin-bottom: 8px;
}
.cap-card p { font-size: 14px; color: var(--muted); }
.cap-card .tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid var(--cyan-dim);
  border-radius: 12px;
  padding: 2px 10px;
}

/* --- approach --- */
.approach {
  max-width: 1060px;
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.approach h2 {
  font-size: 24px;
  color: var(--white);
  margin-bottom: 16px;
}
.approach p { color: var(--muted); margin-bottom: 14px; }
.stat-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
}
.stat-block dl { display: grid; gap: 20px; }
.stat-block dt {
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
}
.stat-block dt .mono { font-size: 28px; }
.stat-block dd { font-size: 13px; color: var(--muted); }

/* --- page content (privacy, contact) --- */
.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}
.page-content h1 {
  font-size: 28px;
  color: var(--white);
  margin-bottom: 8px;
}
.page-content h2 {
  font-size: 17px;
  color: var(--white);
  margin-top: 28px;
  margin-bottom: 8px;
}
.page-content p { color: var(--muted); margin-bottom: 12px; }
.page-content .updated {
  margin-top: 32px;
  font-size: 13px;
  color: #484f58;
}

/* --- contact form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}
.contact-grid label {
  display: block;
  font-size: 13px;
  color: var(--text);
  margin: 14px 0 4px;
  font-weight: 500;
}
.contact-grid input,
.contact-grid textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  font: inherit;
}
.contact-grid textarea { height: 120px; resize: vertical; }
.contact-grid input:focus,
.contact-grid textarea:focus {
  outline: none;
  border-color: var(--cyan-dim);
}
.contact-info h3 {
  font-size: 14px;
  color: var(--white);
  margin-bottom: 6px;
}
.contact-info p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

/* --- footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  font-size: 13px;
  color: var(--muted);
}
.site-footer .inner {
  max-width: 1060px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--cyan); }

/* --- responsive --- */
@media (max-width: 800px) {
  .cap-grid { grid-template-columns: 1fr; }
  .approach { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}