:root {
  --brand: #002d30;
  --accent: #0a9e7f;
  --accent-light: #10c9a0;
  --text: #1c2b2d;
  --muted: #5b6b6d;
  --bg: #ffffff;
  --soft: #f1f8f6;
  --border: #dbe7e4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 17px;
}
a { color: var(--accent); }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 16px; }

.site-header { background: var(--brand); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 12px; padding-bottom: 12px; max-width: 1080px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.brand img { border-radius: 6px; }
.site-header nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.site-header nav a { color: #e6f2f0; text-decoration: none; font-size: 0.95rem; }
.site-header nav a:hover { color: #fff; }
.btn-sm { background: var(--accent-light); color: var(--brand) !important; padding: 6px 14px; border-radius: 999px; font-weight: 600; }

.article { padding-top: 24px; padding-bottom: 48px; }
.crumbs { font-size: 0.85rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
h1 { font-size: clamp(1.8rem, 4.5vw, 2.5rem); line-height: 1.2; color: var(--brand); margin: 14px 0 6px; }
h2 { font-size: 1.45rem; color: var(--brand); margin: 40px 0 10px; line-height: 1.3; scroll-margin-top: 16px; }
h3 { font-size: 1.08rem; color: var(--brand); margin: 22px 0 4px; }
.meta { color: var(--muted); font-size: 0.88rem; margin: 0 0 16px; }
.lead { font-size: 1.12rem; color: #2f4245; }
ul, ol { padding-left: 1.3em; }
li { margin-bottom: 6px; }
.note { font-size: 0.9rem; color: var(--muted); }

.toc { background: var(--soft); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; margin: 24px 0; }
.toc p { margin: 0 0 6px; font-weight: 700; color: var(--brand); }
.toc ol { margin: 0; }
.toc a { text-decoration: none; }

.table-wrap { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; min-width: 520px; }
th, td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; }
th { background: var(--soft); color: var(--brand); }

.sample { border-left: 4px solid var(--accent-light); background: var(--soft); padding: 10px 16px; margin: 14px 0; border-radius: 0 10px 10px 0; }
.sample p { margin: 4px 0; }
.sample summary { cursor: pointer; color: var(--accent); font-weight: 600; }

.cta { background: var(--brand); color: #e6f2f0; border-radius: 16px; padding: 26px 24px; margin: 44px 0; }
.cta h2 { color: #fff; margin-top: 0; }
.btn { display: inline-block; background: var(--accent-light); color: var(--brand); font-weight: 700; padding: 12px 22px; border-radius: 999px; text-decoration: none; margin-top: 6px; }
.btn:hover { background: #fff; }

.faq h3 { margin-top: 20px; }
.related ul { padding-left: 1.1em; }

.cards { list-style: none; padding: 0; display: grid; gap: 16px; margin: 28px 0; }
.card a { display: block; border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; text-decoration: none; color: var(--text); transition: border-color .15s, box-shadow .15s; }
.card a:hover { border-color: var(--accent-light); box-shadow: 0 4px 18px rgba(0, 45, 48, 0.08); }
.card h2 { margin: 0 0 6px; font-size: 1.2rem; }
.card p { margin: 0 0 8px; color: var(--muted); font-size: 0.95rem; }
.card span { color: var(--accent); font-weight: 600; font-size: 0.95rem; }

.site-footer { background: var(--soft); border-top: 1px solid var(--border); padding: 24px 0; font-size: 0.9rem; color: var(--muted); }
.site-footer a { color: var(--muted); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-header nav { gap: 12px; }
  .site-header nav a:not(.btn-sm):first-child { display: none; }
}