*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
.site-header {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  position: sticky; top: 0; z-index: 10;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 56px; gap: 16px;
}
.logo { font-weight: 700; font-size: 1.25rem; color: #111; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.9rem; }
nav a { color: #555; text-decoration: none; }
nav a:hover, nav a.active { color: #111; }
.content { padding: 32px 20px 48px; }
.content h1 { margin-top: 0; font-size: 1.75rem; }
.content h2 { margin-top: 2rem; font-size: 1.2rem; }
.content h3 { margin-top: 1.25rem; font-size: 1.05rem; }
.doc-meta { color: #666; font-size: 0.92rem; margin: -0.5rem 0 1.5rem; }
.content p, .content li { color: #333; }
.content ul { padding-left: 1.25rem; }
.content table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.92rem; }
.content th, .content td { border: 1px solid #ddd; padding: 8px 10px; text-align: left; vertical-align: top; }
.content th { background: #f0f0f0; }
.notice {
  background: #fff8e1; border: 1px solid #ffe082; border-radius: 8px;
  padding: 14px 16px; margin-bottom: 1.5rem; font-size: 0.92rem;
}
.hero { text-align: center; padding: 32px 0 16px; }
.hero h1 { font-size: 2.25rem; margin: 0 0 12px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 1.15rem; color: #444; max-width: 560px; margin: 0 auto 12px; }
.hero-tagline { font-size: 0.95rem; color: #777; margin: 0 auto 28px; }
.btn {
  display: inline-block; background: #111; color: #fff !important;
  padding: 12px 20px; border-radius: 10px; text-decoration: none; font-weight: 600;
}
.btn-muted { opacity: .55; cursor: default; }
.intro { margin-top: 40px; }
.intro p { max-width: 640px; }
.features { margin-top: 48px; }
.feature-grid {
  display: grid; gap: 16px; margin-top: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.feature {
  background: #fff; border: 1px solid #e5e5e5; border-radius: 12px; padding: 20px;
}
.feature h3 { margin: 0 0 8px; font-size: 1rem; }
.feature p { margin: 0; font-size: 0.93rem; color: #444; }
.screenshots { margin-top: 48px; }
.screenshots > h2 { margin-bottom: 20px; }
.screenshot-grid {
  display: grid;
  grid-template-columns: 200px 200px;
  justify-content: center;
  column-gap: 40px;
  row-gap: 32px;
  margin-top: 8px;
}
.screenshot-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 200px;
}
.screenshot-item--solo {
  grid-column: 1 / -1;
  justify-self: center;
}
.screenshot-label {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #111;
  text-align: center;
}
.screenshot-note {
  margin: 10px 0 0;
  font-size: 0.8rem;
  line-height: 1.35;
  color: #555;
  text-align: center;
}
.screenshot-img {
  display: block;
  width: 200px;
  height: auto;
  border-radius: 14px;
  border: 1px solid #ccc;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}
@media (max-width: 520px) {
  .screenshot-grid {
    grid-template-columns: 150px 150px;
    column-gap: 20px;
    row-gap: 28px;
  }
  .screenshot-item { width: 150px; }
  .screenshot-img { width: 150px; }
}
.trust { margin-top: 48px; padding-bottom: 16px; }
.trust ul { padding-left: 1.25rem; max-width: 640px; }
.cards { display: grid; gap: 16px; margin-top: 32px; }
.card {
  background: #fff; border: 1px solid #e5e5e5; border-radius: 12px; padding: 20px;
}
.card h2 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; font-size: 0.95rem; }
.site-footer {
  border-top: 1px solid #e5e5e5; background: #fff;
  padding: 24px 0; font-size: 0.85rem; color: #666;
}
.site-footer a { color: #444; }