:root {
  --brand: #5f8c62;
  --brand-dark: #3f6942;
  --brand-light: #eef4ec;
  --ink: #24291f;
  --ink-soft: #565f4e;
  --bg: #ffffff;
  --border: #e2e8dd;
  --max-w: 780px;
  --radius: 14px;
  font-size: 17px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; color: var(--ink); line-height: 1.25; }
h1 { font-size: 2.1rem; margin: 0.4em 0 0.3em; }
h2 { font-size: 1.4rem; margin-top: 2em; }
h3 { font-size: 1.1rem; margin-top: 0; }
p { margin: 0.9em 0; color: var(--ink-soft); }
a { color: var(--brand-dark); text-decoration-thickness: 1px; }
a:hover { color: var(--brand); }

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.05rem; text-decoration: none; color: var(--ink); }
.brand .icon-svg { width: 26px; height: 26px; }
.main-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.main-nav a { text-decoration: none; color: var(--ink-soft); font-size: 0.95rem; }
.main-nav a[aria-current="page"] { color: var(--brand-dark); font-weight: 600; }

.breadcrumb { padding: 14px 20px 0; font-size: 0.85rem; color: var(--ink-soft); }
.breadcrumb a { color: var(--ink-soft); }

.main-content { padding: 24px 20px 60px; }
.hero-wrap { margin: 0 -20px 24px; border-radius: 0; overflow: hidden; }
.hero-svg { display: block; width: 100%; height: auto; }
.icon-svg { display: block; }

.intro { font-size: 1.1rem; color: var(--ink); }

.content-block p { max-width: 68ch; }

.faq { margin-top: 2.4em; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  margin-bottom: 10px;
}
.faq-item summary { cursor: pointer; font-weight: 600; }
.faq-item p { margin: 0.6em 0 0.2em; }

.related { margin-top: 2.6em; padding-top: 1.6em; border-top: 1px solid var(--border); }
.related ul { padding-left: 1.2em; }
.related li { margin: 0.4em 0; }

.site-footer { background: var(--brand-light); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 28px; padding: 40px 20px 20px; }
.footer-brand { margin-bottom: 8px; }
.footer-list { list-style: none; padding: 0; margin: 0; columns: 1; }
.footer-list li { margin: 6px 0; font-size: 0.92rem; }
.footer-bottom { padding: 14px 20px 30px; font-size: 0.8rem; color: var(--ink-soft); }

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr; }
  .footer-list { columns: 2; }
  h1 { font-size: 2.5rem; }
}