:root {
  --ink: #142933;
  --paper: #f6f2e8;
  --surface: #fffef9;
  --sidebar: #ebe6da;
  --sage: #4f7a4f;
  --terra: #b84729;
  --line: rgba(20, 41, 51, .13);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shell: min(100% - 48px, 1040px);
}
* { box-sizing: border-box; }
html { color: var(--ink); background: var(--paper); scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.shell { width: var(--shell); margin-inline: auto; }
.content-header { border-bottom: 1px solid var(--line); background: rgba(246,242,232,.94); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
.content-nav { display: flex; align-items: center; gap: 24px; font-size: 14px; font-weight: 700; }
.content-nav a:hover { color: var(--sage); }
.download-link { padding: 10px 16px; color: white; background: var(--ink); border-radius: 7px; }
.content-main { min-height: 70vh; }
.content-hero { padding: 90px 0 72px; border-bottom: 1px solid var(--line); background: linear-gradient(135deg, var(--paper), #edf2e9); }
.eyebrow { margin: 0 0 22px; color: var(--terra); font-size: 12px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.content-hero h1 { max-width: 850px; margin: 0; font-family: var(--serif); font-size: clamp(42px, 6vw, 72px); font-weight: 500; line-height: 1.06; }
.content-hero .lead { max-width: 760px; margin: 28px 0 0; color: rgba(20,41,51,.7); font-size: 20px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border: 1px solid var(--ink); border-radius: 7px; font-weight: 800; }
.button.primary { color: white; background: var(--ink); }
.button.secondary { background: var(--surface); }
.content-body { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 80px; padding: 72px 0 100px; }
.article h2 { margin: 55px 0 16px; font-family: var(--serif); font-size: 34px; font-weight: 500; line-height: 1.2; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 34px 0 10px; font-family: var(--serif); font-size: 24px; font-weight: 500; }
.article p, .article li { color: rgba(20,41,51,.74); }
.article ol, .article ul { padding-left: 24px; }
.article li + li { margin-top: 10px; }
.answer { padding: 24px 26px; background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--sage); border-radius: 8px; }
.answer strong { display: block; margin-bottom: 8px; color: var(--sage); }
.note { padding: 18px 20px; overflow-wrap: anywhere; background: #f3e9e3; border-radius: 8px; color: #6c321f; }
.comparison-image { margin: 30px 0; border: 1px solid var(--line); border-radius: 12px; background: white; }
.sidebar { align-self: start; position: sticky; top: 28px; padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.sidebar strong { display: block; margin-bottom: 12px; font-family: var(--serif); font-size: 20px; }
.sidebar a { display: block; padding: 8px 0; color: rgba(20,41,51,.68); border-bottom: 1px solid var(--line); font-size: 14px; }
.sidebar a:last-child { border-bottom: 0; }
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 70px 0 100px; }
.guide-card { min-height: 240px; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.guide-card span { color: var(--terra); font-size: 11px; font-weight: 850; letter-spacing: .12em; }
.guide-card h2 { margin: 30px 0 10px; font-family: var(--serif); font-size: 28px; font-weight: 500; line-height: 1.2; }
.guide-card p { color: rgba(20,41,51,.65); }
.release-panel { margin-top: 42px; padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.release-meta { display: flex; flex-wrap: wrap; gap: 10px 24px; color: rgba(20,41,51,.65); font-size: 14px; }
.asset-list { margin-top: 20px; padding: 0; list-style: none; }
.asset-list li { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.asset-list a { color: var(--sage); font-weight: 800; }
.content-footer { padding: 40px 0; color: rgba(246,242,232,.62); background: var(--ink); }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }
.footer-inner a { color: var(--paper); }
@media (max-width: 760px) {
  :root { --shell: calc(100% - 28px); }
  .content-nav a:not(.download-link) { display: none; }
  .content-hero { padding: 64px 0 52px; }
  .content-hero h1 { font-size: clamp(40px, 12vw, 56px); }
  .content-hero .lead { font-size: 17px; }
  .content-body { grid-template-columns: 1fr; gap: 40px; padding-top: 52px; }
  .sidebar { position: static; }
  .guide-grid { grid-template-columns: 1fr; }
  .footer-inner { display: grid; }
}