:root {
  --accent: #3E4C71;
  --text: #211C17;
  --text-soft: rgba(33,28,23,0.64);
  --bg: #ffffff;
  --surface: #F3EEE4;
  --border: #E0D6BF;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f0ec;
    --text-soft: #a3a09a;
    --bg: #171511;
    --surface: #211f1a;
    --border: #35322a;
  }
}
* { box-sizing: border-box; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  padding: 0 20px 80px;
}
header {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}
header .mark {
  width: 40px; height: 40px; border-radius: 10px;
  display: block;
}
header .name { font-weight: 800; font-size: 18px; letter-spacing: -0.3px; }
header nav { margin-left: auto; display: flex; align-items: center; gap: 16px; }
header nav a { color: var(--text-soft); text-decoration: none; font-size: 14px; }
header nav a:hover { color: var(--accent); }
header .lang-switch { border-left: 1px solid var(--border); padding-left: 16px; }
header .lang-switch a.current { color: var(--text); font-weight: 700; pointer-events: none; }
main { max-width: 680px; margin: 0 auto; }
h1 { font-size: 28px; letter-spacing: -0.5px; margin: 36px 0 6px; }
.updated { color: var(--text-soft); font-size: 14px; margin-bottom: 28px; }
h2 { font-size: 19px; margin: 32px 0 10px; letter-spacing: -0.2px; }
p, li { font-size: 16px; color: var(--text); }
p { margin: 10px 0; }
ul { padding-left: 22px; margin: 10px 0; }
li { margin: 5px 0; }
a { color: var(--accent); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 16px 0;
}
.muted { color: var(--text-soft); font-size: 14px; }
footer {
  max-width: 680px;
  margin: 56px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 13px;
}

/* ---------- Landing page ---------- */
body.landing { padding-bottom: 0; }
.landing-main { max-width: 1040px; }

.hero {
  text-align: center;
  padding: 64px 0 56px;
  max-width: 640px;
  margin: 0 auto;
}
.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: 42px;
  line-height: 1.12;
  letter-spacing: -1px;
  margin: 0 0 18px;
  font-weight: 800;
}
.hero .lead {
  font-size: 17px;
  color: var(--text-soft);
  max-width: 520px;
  margin: 0 auto 8px;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 8px 0 56px;
}
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.feature h2 {
  font-size: 17px;
  margin: 0 0 8px;
}
.feature p {
  font-size: 14px;
  color: var(--text-soft);
  margin: 0;
}

.cta {
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 24px;
  margin-bottom: 56px;
}
.cta h2 { font-size: 22px; margin: 0 0 8px; }
.cta p { color: var(--text-soft); margin: 0; }

@media (max-width: 640px) {
  .hero { padding-top: 44px; }
  .hero h1 { font-size: 30px; }
  .features { grid-template-columns: 1fr; }
}