:root {
  color-scheme: light;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #dc2626;
  --accent-dark: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
  color: var(--text);
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.topbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 20px;
}

.topbar a {
  color: var(--muted);
  text-decoration: none;
}

.topbar a:hover,
.content a:hover {
  color: var(--accent);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.06);
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

h2 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-size: 1.4rem;
}

p,
li {
  color: #374151;
  line-height: 1.7;
}

ul {
  padding-left: 22px;
}

.lead {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 1.05rem;
}

.meta {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 0.95rem;
}

.note {
  border-left: 4px solid var(--accent);
  background: #fef2f2;
  padding: 14px 16px;
  border-radius: 0 14px 14px 0;
  margin: 20px 0 28px;
  color: #7f1d1d;
}

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

.footer {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .wrap {
    padding: 20px 14px 40px;
  }

  .card {
    padding: 22px 18px;
    border-radius: 18px;
  }
}