:root {
  --bg: #f5f6fa;
  --text: #1a1a2e;
  --text2: #4a5568;
  --accent: #e8622a;
  --card: #ffffff;
  --font: Georgia, "Times New Roman", "Liberation Serif", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font-family: var(--sans); line-height: 1.6; }
a { color: var(--accent); }
.wrap { width: min(760px, calc(100% - 40px)); margin: 0 auto; padding: 28px 0 80px; }
.site-nav {
  display: flex; flex-wrap: wrap; gap: 12px 18px; align-items: center;
  padding: 18px 0 10px; font-size: 14px; font-weight: 600;
}
.site-nav a { text-decoration: none; color: var(--text2); }
.site-nav a:hover { color: var(--accent); }
.brand { font-weight: 800; color: var(--text); letter-spacing: -0.02em; margin-right: auto; }
h1 {
  font-family: var(--font);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1.15; letter-spacing: -0.02em; margin: 18px 0 12px;
}
h2 { font-size: 1.25rem; margin: 1.6em 0 0.5em; }
p, li { color: var(--text2); font-size: 1.02rem; }
ul { padding-left: 1.2em; }
.meta { font-size: 13px; color: #8892a0; margin-bottom: 24px; }
.card {
  background: var(--card); border: 1px solid rgba(0,0,0,0.06);
  border-radius: 14px; padding: 22px 22px 8px; margin: 18px 0;
}
.footer-note { margin-top: 40px; font-size: 13px; color: #8892a0; }
.btn {
  display: inline-block; margin-top: 8px; padding: 10px 16px; border-radius: 999px;
  background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; font-size: 14px;
}