:root {
  --ink: #1c1c1e;
  --paper: #fafaf7;
  --line: #e2e2dd;
  --accent: #2f4b7a;
  --muted: #6b6a66;
  --max-width: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.7;
  font-size: 17px;
}

header.site-header {
  border-bottom: 1px solid var(--line);
  padding: 18px 24px;
}

header.site-header .wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

nav.site-nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.92rem;
}

nav.site-nav a:hover { color: var(--accent); }

nav.site-nav a.lang-switch {
  padding: 2px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

nav.site-nav a.lang-switch:hover { border-color: var(--accent); }

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

main.legal { font-size: 0.98rem; }

h1 { font-size: 2rem; margin: 0 0 8px; letter-spacing: 0.01em; }
h2 { font-size: 1.3rem; margin: 2.4em 0 0.6em; }
h3 { font-size: 1.05rem; margin: 1.8em 0 0.5em; }
p { margin: 0.9em 0; }
ul, ol { padding-left: 1.3em; }
li { margin: 0.35em 0; }

.tagline {
  color: var(--muted);
  font-size: 1.1rem;
  margin-top: 0;
}

.updated {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 2.4em;
}

.hero {
  padding: 8px 0 24px;
}

.hero .badges {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.cta {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 22px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.95rem;
}

.cta.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 40px;
}

@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
}

.feature h3 { margin-top: 0; }
.feature p { color: var(--muted); font-size: 0.94rem; margin: 0.4em 0 0; }

.callout {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  background: #f1f4f8;
  font-size: 0.92rem;
  color: var(--muted);
  margin: 1.6em 0;
}

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 24px 60px;
  color: var(--muted);
  font-size: 0.85rem;
}

footer.site-footer .wrap {
  max-width: var(--max-width);
  margin: 0 auto;
}

footer.site-footer a { color: var(--muted); }

.manual-toc {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 20px;
  background: #f6f6f3;
  margin: 1.6em 0 2.4em;
}

.manual-toc p { margin: 0 0 0.4em; font-weight: 600; }
.manual-toc ul { margin: 0; }

kbd.gesture {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 8px;
  font-size: 0.88em;
  font-family: inherit;
  background: #fff;
}

a { color: var(--accent); }