:root {
  --bg: #fafaf8; --fg: #1d1d1b; --muted: #5f5f59; --line: #dcdcd4;
  --card: #ffffff; --accent: #1f5f4a; --accent-fg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161714; --fg: #ecece6; --muted: #a3a39a; --line: #34352f;
    --card: #1f201c; --accent: #5fbf9f; --accent-fg: #10110f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
main, .bar, .foot { max-width: 960px; margin: 0 auto; padding: 0 20px; }
main { padding-top: 32px; padding-bottom: 48px; }
.bar { display: flex; justify-content: space-between; align-items: center; padding-top: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.bar nav { display: flex; gap: 18px; align-items: center; }
.bar a { text-decoration: none; }
.brand { font-weight: 700; font-size: 1.2em; color: var(--fg); }
.lang { border: 1px solid var(--line); border-radius: 6px; padding: 2px 8px; font-size: .85em; }
h1 { font-size: 2em; line-height: 1.2; margin: .4em 0; }
h2 { margin-top: 2em; }
.hero { padding: 24px 0 8px; }
.lead { font-size: 1.15em; color: var(--muted); max-width: 40em; }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-fg);
  border: 1px solid var(--accent); border-radius: 8px; padding: 10px 18px;
  text-decoration: none; font: inherit; cursor: pointer; margin-right: 8px;
}
.btn.ghost { background: transparent; color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.grid.four { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; color: var(--fg); text-decoration: none; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); }
.card.link:hover { border-color: var(--accent); }
.tags span { display: inline-block; font-size: .8em; border: 1px solid var(--line); border-radius: 999px; padding: 0 9px; margin: 8px 6px 0 0; color: var(--muted); }
form { max-width: 520px; }
label { display: block; margin-top: 14px; font-weight: 600; }
input, textarea { display: block; width: 100%; margin-top: 4px; padding: 9px 10px; font: inherit; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
button.btn { margin-top: 16px; }
.errorlist { color: #b3261e; list-style: none; padding: 0; margin: 4px 0 0; }
.ok { background: var(--card); border: 1px solid var(--accent); border-radius: 8px; padding: 10px 14px; }
.hp { position: absolute; left: -9999px; }
.foot { padding-top: 18px; padding-bottom: 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9em; }
@media (max-width: 520px) { h1 { font-size: 1.6em; } .bar nav { gap: 12px; } }