:root {
  --accent: #38bdf8;
  --text: #1a1a1a;
  --text-secondary: #5a5a5a;
  --bg: #ffffff;
  --surface: #f6fafd;
  --border: #e2e8ef;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header.hero {
  margin-bottom: 40px;
}

.logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

h1 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.4;
}

h2 {
  font-size: 19px;
  font-weight: 700;
  margin: 36px 0 8px;
}

p {
  color: var(--text-secondary);
  margin: 0 0 16px;
  font-size: 15px;
}

.lead {
  font-size: 17px;
  color: var(--text);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
}

.card p {
  margin: 0;
  font-size: 14px;
}

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

a:hover { text-decoration: underline; }

.contact {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 20px;
  background: var(--accent);
  color: white;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
}

.contact:hover { text-decoration: none; opacity: 0.9; }

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: #9aa3ad;
}

nav.crumbs {
  font-size: 13px;
  margin-bottom: 24px;
}

nav.crumbs a { color: var(--text-secondary); }

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f0f0f0;
    --text-secondary: #a8b0ba;
    --bg: #14171a;
    --surface: #1c2126;
    --border: #2a2f36;
  }
}