:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #64748b;
  --line: #d9e2ec;
  --accent: #147d64;
  --accent-deep: #0f5f4c;
  --danger: #b42318;
  --shadow: 0 14px 38px rgba(15, 23, 42, 0.08);
  font-family: "Be Vietnam Pro", "IBM Plex Sans", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 36px;
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 8px;
  font-size: 18px;
}

code {
  display: inline-block;
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #eef2f7;
  color: var(--text);
  overflow-wrap: anywhere;
}

.landing-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 0;
}

.landing-card {
  width: min(960px, calc(100vw - 32px));
  margin: 24px auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lead {
  max-width: 720px;
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.banner {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: 8px;
  line-height: 1.5;
}

.banner.warning {
  background: #fff6df;
  border: 1px solid #f2d98b;
}

.banner.error {
  color: var(--danger);
  background: #fff0ee;
  border: 1px solid #ffcdc7;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.info-grid.single-column {
  grid-template-columns: 1fr;
}

.info-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.muted {
  color: var(--muted);
}

.debug-block {
  margin: 14px 0 0;
  padding: 14px;
  border-radius: 8px;
  background: #eef2f7;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 720px) {
  .landing-card {
    width: min(100vw - 20px, 960px);
    margin: 10px auto;
    padding: 24px;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 30px;
  }
}