:root {
  color-scheme: light dark;
  --text: #0f172a;
  --muted: #475569;
  --bg: #f8fafc;
  --card: #ffffff;
  --accent: #db2777;
  --accent-hover: #be185d;
  --border: #e2e8f0;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f1f5f9;
    --muted: #94a3b8;
    --bg: #0f172a;
    --card: #1e293b;
    --border: #334155;
  }
}

* {
  box-sizing: border-box;
}

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

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

.landing-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

.landing-logo {
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
  color: var(--text);
}

.landing-main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.landing-main article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.landing-lead {
  font-size: 1.0625rem;
  color: var(--muted);
}

.landing-zh {
  margin-top: 0.5rem;
}

.landing-lead--zh-title {
  margin-top: 0;
}

.landing-cta {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
}

.landing-cta:hover {
  background: var(--accent-hover);
  color: #fff !important;
}

.landing-cta--inline {
  margin-top: 0.5rem;
}

.landing-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

h1 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.125rem;
  margin: 1.5rem 0 0.5rem;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}