:root {
  color-scheme: light dark;
  --accent: #8b3dff;
  --accent-2: #1f8fff;
  --bg: #f7f7fb;
  --card: rgba(255, 255, 255, 0.92);
  --text: #17171c;
  --muted: #5e5e6b;
  --line: rgba(23, 23, 28, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c0f;
    --card: rgba(30, 30, 35, 0.94);
    --text: #f5f5f7;
    --muted: #aaaab4;
    --line: rgba(255, 255, 255, 0.11);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(31, 143, 255, 0.14), transparent 34rem),
    radial-gradient(circle at 90% 10%, rgba(139, 61, 255, 0.16), transparent 32rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

main {
  width: min(760px, calc(100% - 36px));
  margin: 0 auto;
  padding: 72px 0 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: white;
  font-size: 20px;
}

h1 {
  margin: 42px 0 10px;
  font-size: clamp(2.2rem, 6vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h2 {
  margin: 34px 0 8px;
  font-size: 1.25rem;
  letter-spacing: -0.015em;
}

p, li { color: var(--muted); }
p.lead { font-size: 1.15rem; }

.card {
  margin-top: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--card);
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.07);
  backdrop-filter: blur(16px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.link-card {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  color: var(--text);
  text-decoration: none;
}

.link-card span { display: block; color: var(--muted); margin-top: 4px; }
a { color: var(--accent-2); }
ul { padding-left: 22px; }
.meta { color: var(--muted); font-size: 0.92rem; }
footer { margin-top: 48px; color: var(--muted); font-size: 0.9rem; }

@media (max-width: 520px) {
  main { padding-top: 38px; }
  .card { padding: 22px; }
}