:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #101828;
  --muted: #667085;
  --line: #e3e7ed;
  --accent: #1f5fd1;
  --accent-soft: #e8f0fd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #171a20;
    --text: #e6e8ec;
    --muted: #a0a7b4;
    --line: #2a2f38;
    --accent: #8ab4f8;
    --accent-soft: #1d3a6e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

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

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 32px;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.top nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  margin-left: 16px;
}

h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 1.2rem; margin: 36px 0 8px; }

.muted { color: var(--muted); }

.lead { font-size: 1.1rem; color: var(--muted); margin: 0 0 28px; max-width: 560px; }

.card {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  margin-top: 12px;
}

.card img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  flex-shrink: 0;
}

.card h2 { margin: 0; font-size: 1.1rem; }
.card h2 a { color: var(--text); text-decoration: none; }
.card p { margin: 2px 0 10px; }

.links { display: flex; flex-wrap: wrap; gap: 8px; }

.links a {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.app-head { display: flex; gap: 18px; align-items: center; margin-bottom: 20px; }
.app-head img { width: 88px; height: 88px; border-radius: 20px; }
.app-head h1 { margin: 0; overflow-wrap: anywhere; }
.app-head > div { min-width: 0; }

ul { padding-left: 22px; }

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}