:root {
  --ink: #1c2430;
  --muted: #5d6774;
  --line: #d8dee8;
  --paper: #ffffff;
  --soft: #f5f8fb;
  --accent: #1b998b;
  --warn: #fff4d8;
  --warn-line: #e8c36a;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; color: var(--ink); background: var(--paper); line-height: 1.65; }
a { color: #12685f; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 6vw; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); position: sticky; top: 0; z-index: 2; }
.brand { color: var(--ink); font-weight: 700; text-decoration: none; }
nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
.hero, .page, .article-shell { max-width: 1120px; margin: 0 auto; padding: 56px 6vw; }
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 36px; align-items: center; }
.eyebrow { color: var(--accent); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0; }
h1 { font-size: 42px; line-height: 1.12; letter-spacing: 0; margin: 10px 0 18px; }
h2 { font-size: 26px; line-height: 1.25; margin: 44px 0 14px; }
p { margin: 0 0 18px; }
.summary-panel, .notice, .disclosure { border: 1px solid var(--line); background: var(--soft); padding: 18px; border-radius: 8px; }
.notice { background: var(--warn); border-color: var(--warn-line); }
.article-shell { display: grid; grid-template-columns: minmax(0, 760px) 260px; gap: 44px; align-items: start; }
.article-body { min-width: 0; }
.article-body ul { padding-left: 22px; }
.article-body li { margin: 0 0 8px; }
.article-meta { color: var(--muted); font-size: 14px; }
.toc { border-left: 3px solid var(--accent); padding-left: 16px; color: var(--muted); font-size: 14px; position: sticky; top: 92px; }
.cta { display: inline-block; background: var(--accent); color: white; padding: 13px 18px; border-radius: 6px; font-weight: 700; text-decoration: none; }
.cta-row { margin: 20px 0 28px; }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); padding: 28px 6vw; font-size: 14px; }
@media (max-width: 820px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .hero, .article-shell { grid-template-columns: 1fr; padding-top: 34px; }
  h1 { font-size: 34px; }
  .toc { position: static; }
}