/* Public pages (landing, legal). Plain CSS so they render without JavaScript,
   which platform review crawlers (e.g. Meta's) require. */
:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-text: #ffffff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-soft: #111827;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --border: #1e293b;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-text: #0b1120;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

header.site { border-bottom: 1px solid var(--border); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { font-weight: 700; letter-spacing: .02em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
header.site nav { display: flex; gap: 12px; align-items: center; }
header.site nav a { text-decoration: none; font-size: 15px; }

.btn {
  display: inline-block; padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 15px;
  text-decoration: none; background: var(--accent); color: var(--accent-text); border: 1px solid var(--accent);
}
.btn:hover { background: var(--accent-hover); color: var(--accent-text); }
.btn.ghost { background: transparent; color: var(--accent); }

.hero { padding: 72px 0 56px; text-align: center; }
.hero h1 { font-size: clamp(32px, 5vw, 48px); line-height: 1.15; margin: 0 0 16px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.hero .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.section { padding: 48px 0; border-top: 1px solid var(--border); }
.section h2 { font-size: 26px; margin: 0 0 24px; text-align: center; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
ol.steps { max-width: 640px; margin: 0 auto; padding-left: 20px; color: var(--muted); }
ol.steps li { margin-bottom: 8px; }
ol.steps strong { color: var(--text); }

.legal { max-width: 760px; padding: 40px 16px 64px; }
.legal h1 { font-size: 32px; margin: 0 0 4px; }
.legal .updated { color: var(--muted); margin: 0 0 32px; }
.legal h2 { font-size: 20px; margin: 36px 0 8px; }
.legal li { margin-bottom: 6px; }
.legal .callout { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; }

footer.site { border-top: 1px solid var(--border); padding: 28px 0; color: var(--muted); font-size: 14px; }
footer.site .links { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
footer.site p { margin: 4px 0; }

@media (max-width: 560px) {
  header.site nav .hide-sm { display: none; }
  .hero { padding: 48px 0 40px; }
}