:root {
  --bg: #f6f5fb; --card: #ffffff; --fg: #1a1730; --muted: #5b566e;
  --accent: #7d3be5; --accent-soft: #f0e8ff; --border: #e6e2f2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131022; --card: #1c1832; --fg: #ece9f6; --muted: #a49fbb;
    --accent: #b48bff; --accent-soft: #2a2145; --border: #2c2745;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.7 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding: 0 20px 64px;
}
.wrap { max-width: 760px; margin: 0 auto; }

header.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 22px 0; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.logo {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, #7d3be5, #b48bff);
  color: #fff; font-weight: 900; font-size: 24px;
  display: flex; align-items: center; justify-content: center;
}
.brand b { font-size: 19px; }
nav.lang a {
  color: var(--muted); text-decoration: none; font-size: 14px;
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px;
}
nav.lang a[aria-current="true"] { color: var(--fg); border-color: var(--accent); }

.hero { padding: 26px 0 8px; }
.hero h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.2; margin: 0 0 14px; }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 26px; max-width: 58ch; }

.features { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 8px 0 34px; }
.feature { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; }
.feature h3 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; }

.panel { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 22px 24px; margin: 0 0 26px; }
.panel h2 { margin: 0 0 10px; font-size: 19px; }
.panel p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.panel p:last-child { margin-bottom: 0; }

.docs { display: grid; gap: 10px; }
a.doc {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 15px 18px; border: 1px solid var(--border); border-radius: 13px;
  text-decoration: none; color: var(--fg); font-weight: 600; background: var(--card);
}
a.doc:hover { border-color: var(--accent); }
a.doc span.arrow { color: var(--accent); font-weight: 800; }

article h1 { font-size: 28px; margin: 18px 0 6px; }
article h2 { font-size: 19px; margin: 32px 0 8px; }
article p { margin: 0 0 14px; }
article ul { margin: 0 0 14px; padding-left: 22px; }
article li { margin-bottom: 8px; }
.effective { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.callout { background: var(--accent-soft); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; margin: 0 0 22px; }
.callout p:last-child { margin-bottom: 0; }

a { color: var(--accent); }
footer.site { border-top: 1px solid var(--border); margin-top: 40px; padding-top: 20px; color: var(--muted); font-size: 13.5px; }
footer.site a { color: var(--muted); }
footer.site nav { margin-bottom: 8px; display: flex; gap: 16px; flex-wrap: wrap; }