:root {
  color-scheme: light dark;
  --bg: #f5f7f2;
  --surface: #ffffff;
  --text: #17211d;
  --muted: #607068;
  --primary: #1e6b52;
  --soft: #e3f1eb;
  --line: #d8e1dc;
  --gold: #d7a94b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main { width: min(100% - 32px, 820px); margin: 48px auto; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.mark {
  width: 64px; height: 64px; display: grid; place-items: center;
  border-radius: 20px 20px 20px 7px; background: var(--primary); color: white;
  font-size: 28px; font-weight: 900;
}
h1 { margin: 0; font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.1; }
header p, .updated { margin: 5px 0 0; color: var(--muted); }
article {
  padding: clamp(22px, 5vw, 42px); border: 1px solid var(--line);
  border-radius: 24px; background: var(--surface); box-shadow: 0 16px 50px rgba(16, 48, 36, .08);
}
h2 { margin-top: 30px; font-size: 1.18rem; }
h2:first-child { margin-top: 0; }
a { color: var(--primary); font-weight: 700; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0; }
.button {
  display: inline-flex; align-items: center; min-height: 46px; padding: 0 17px;
  border-radius: 12px; text-decoration: none; background: var(--primary); color: white;
}
.button.secondary { border: 1px solid var(--line); background: var(--soft); color: var(--primary); }
.notice { padding: 14px 16px; border-left: 4px solid var(--gold); border-radius: 10px; background: var(--soft); }
footer { margin: 24px 0; color: var(--muted); font-size: .9rem; text-align: center; }
@media (prefers-color-scheme: dark) {
  :root { --bg:#101714; --surface:#18221e; --text:#edf5f1; --muted:#a7b8b0; --soft:#18382d; --line:#31443b; }
}