:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: #d2d2d7;
  --accent: #0a66d8;
  --radius: 18px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1c1c1e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --border: #38383a;
    --accent: #4da3ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }

header.site { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }
header.site .brand { font-weight: 600; color: var(--text); }
header.site .brand small { display: block; font-weight: 400; color: var(--muted); font-size: 14px; }
header.site .brand img { display: block; height: 44px; width: auto; }

.lang-switch { font-size: 15px; }
.lang-switch a { padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px; margin-left: 6px; }

h1 { font-size: 34px; line-height: 1.15; margin: 0 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 22px; margin: 36px 0 8px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 24px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.app-hero { display: flex; gap: 16px; align-items: center; margin-bottom: 24px; }
.app-hero img, .app-card img {
  width: 72px; height: 72px; border-radius: 22.5%;
  border: 1px solid var(--border); background: var(--surface); flex: none;
}

.apps { display: grid; gap: 16px; }
.app-card { display: flex; gap: 16px; align-items: flex-start; }
.app-card h2 { margin: 0 0 4px; font-size: 20px; }
.app-card p { margin: 0 0 10px; color: var(--muted); }
.links { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 15px; }

details { border-top: 1px solid var(--border); padding: 12px 0; }
details:last-of-type { border-bottom: 1px solid var(--border); }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--muted); }

.button {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 10px 18px; border-radius: 999px; font-weight: 600;
}
.button:hover { text-decoration: none; opacity: 0.9; }

section.lang { padding-top: 8px; }
section.lang + section.lang { border-top: 1px solid var(--border); margin-top: 48px; padding-top: 32px; }

footer.site { margin-top: 56px; font-size: 14px; color: var(--muted); }