:root {
  --bg: #f7f7fb;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #5f6070;
  --accent: #5856d6;
  --coral: #ff7a59;
  --border: #e4e4ee;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d14;
    --surface: #17171f;
    --text: #f2f2f7;
    --muted: #a3a3b5;
    --accent: #8e8cff;
    --coral: #ff8c6e;
    --border: #2a2a36;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

header.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

header.brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

header.brand a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
}

h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 22px; margin: 36px 0 8px; }
h3 { font-size: 18px; margin: 24px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }

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

.hero {
  background: linear-gradient(135deg, var(--accent), var(--coral));
  color: #fff;
  border-radius: 24px;
  padding: 36px 28px;
  margin-bottom: 32px;
}

.hero h1, .hero p { color: #fff; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
}

.card h3 { margin-top: 0; }

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 15px;
}

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

.lang-switch { font-size: 15px; margin-bottom: 8px; }