:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --ink: #221c33;
  --muted: #5f5873;
  --line: #e7e2ec;
  --accent: #6a35c2;
  --accent-ink: #ffffff;
  --soft: #f2ecfb;
  --radius: 16px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15121d;
    --surface: #1e1a29;
    --ink: #f1edf7;
    --muted: #b4acc6;
    --line: #322b42;
    --accent: #b48cff;
    --accent-ink: #15121d;
    --soft: #261f36;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 3px; }
main { max-width: 760px; margin: 0 auto; padding: 8px 16px 48px; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: 2rem; margin: 0.4em 0 0.3em; }
h2 { font-size: 1.3rem; margin: 1.8em 0 0.5em; }
h3 { font-size: 1.05rem; margin: 1.5em 0 0.5em; }

header.site, footer.site { max-width: 760px; margin: 0 auto; padding: 18px 16px; }
header.site { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 18px; }
.brand { font-weight: 800; font-size: 1.1rem; color: var(--ink); text-decoration: none; letter-spacing: 0.02em; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a { padding: 6px 12px; border-radius: 999px; text-decoration: none; color: var(--muted); font-weight: 600; font-size: 0.95rem; }
nav a:hover { background: var(--soft); color: var(--ink); }
nav a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }
footer.site { color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); margin-top: 24px; }
footer.site p { margin: 0.3em 0; }

.hero { padding: 40px 0 8px; }
.hero h1 { font-size: 2.6rem; margin: 0; }
.hero p { color: var(--muted); font-size: 1.15rem; margin: 0.4em 0 0; }
.section-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-top: 2.2em; }

.card {
  display: flex; gap: 18px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; margin: 12px 0;
}
.card h2 { margin: 0; font-size: 1.25rem; }
.card .sub { margin: 2px 0 8px; color: var(--muted); }
.card .links { margin: 0; display: flex; flex-wrap: wrap; gap: 6px 16px; font-weight: 600; }
.icon { border-radius: 22%; flex: none; box-shadow: 0 2px 10px rgb(0 0 0 / 0.15); }

.app-head { display: flex; gap: 20px; align-items: center; margin-top: 16px; }
.app-head h1 { margin: 0; }
.sub { color: var(--muted); margin: 2px 0; }
.meta { color: var(--muted); font-size: 0.92rem; margin: 2px 0; }

.stores { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 8px; }
.store {
  display: inline-block; padding: 10px 18px; border-radius: 12px; font-weight: 700; text-decoration: none;
  background: var(--ink); color: var(--bg);
}
.store.soon { background: var(--soft); color: var(--muted); font-weight: 600; }

.features { padding-left: 1.2em; }
.features li { margin: 4px 0; }
.contact-card { background: var(--soft); border-radius: var(--radius); padding: 4px 20px 8px; margin-top: 28px; }
.contact-card h2 { margin-top: 0.8em; }

details { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); margin: 8px 0; padding: 0 16px; }
details[open] { padding-bottom: 8px; }
summary { cursor: pointer; padding: 12px 0; font-weight: 600; }
summary .lic { color: var(--muted); font-weight: 400; font-size: 0.9rem; margin-left: 6px; }
pre { white-space: pre-wrap; word-break: break-word; font-size: 0.8rem; line-height: 1.5; color: var(--muted); background: var(--bg); border-radius: 8px; padding: 12px; }

.doc .summary { background: var(--soft); border-left: 4px solid var(--accent); border-radius: 10px; padding: 4px 18px; margin: 18px 0; }

@media (max-width: 520px) {
  .hero h1 { font-size: 2.1rem; }
  .card { align-items: flex-start; }
  .icon { width: 64px; height: 64px; }
}