:root {
  --ink: #17171c;
  --muted: #55565f;
  --line: #e3e3ea;
  --card: #f6f6f9;
  --ground: #ffffff;
  --accent: #4c3fd6;
  --accent-ink: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eeeef2;
    --muted: #a8a9b4;
    --line: #2c2c35;
    --card: #1c1c22;
    --ground: #121216;
    --accent: #8b7dff;
    --accent-ink: #121216;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
  text-decoration: none;
  color: inherit;
}

.brand .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, #4c3fd6, #9b3fd6);
  flex: none;
}

.brand strong {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 1.9rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.3rem;
}

.dek {
  color: var(--muted);
  margin: 0 0 2.5rem;
  font-size: 0.98rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2.2rem 0 0.7rem;
  letter-spacing: -0.01em;
}

p, li { color: var(--ink); font-size: 0.98rem; }
p.muted { color: var(--muted); }

ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }

a { color: var(--accent); text-decoration-thickness: 1.5px; }
a:hover { text-decoration-thickness: 2px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1.3rem;
  margin: 1rem 0;
}

.card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); }

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

footer a { color: var(--muted); }