:root {
  --bg: #f7f7f4;
  --text: #1f2933;
  --muted: #6b7280;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.7;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 40px;
}

.hero {
  margin-bottom: 40px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.logo {
  display: block;
  width: min(100%, 720px);
  height: auto;
  margin: 0;
}

.asn {
  margin: 18px 0 0;
  color: var(--muted);
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    monospace;
  font-size: 1.3rem;
  font-weight: 700;
}

.lead {
  max-width: 720px;
  margin-top: 28px;
  font-size: 1.15rem;
  color: #374151;
}

.card {
  margin-bottom: 20px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(31, 41, 51, 0.04);
}

.card h2 {
  margin: 0 0 18px;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.card p {
  margin: 0 0 16px;
  color: #374151;
}

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

.info-list {
  margin: 0;
}

.info-list div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

.info-list div:first-child {
  border-top: none;
}

dt {
  color: var(--muted);
  font-weight: 600;
}

dd {
  margin: 0;
  font-weight: 600;
}

.simple-list {
  margin: 0;
  padding-left: 1.2em;
}

.simple-list li {
  margin: 2px 0;
}

.footer {
  margin-top: 36px;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 24px, 920px);
    padding-top: 40px;
  }

  .card {
    padding: 22px;
    border-radius: 14px;
  }

  .info-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .lead {
    font-size: 1rem;
  }

  .logo {
    width: 100%;
  }
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --card: #111827;
    --border: #1f2937;
    --accent: #60a5fa;
    --accent-soft: rgba(96, 165, 250, 0.12);
  }

  .lead {
    color: #cbd5e1;
  }

  .card p {
    color: #cbd5e1;
  }

  .card {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  }
}