:root {
  --seo-paper: #efe8d9;
  --seo-paper-light: #fbf7ed;
  --seo-ink: #171717;
  --seo-red: #b91c2a;
  --seo-green: #205438;
  --seo-blue: #255e91;
  --seo-rule: 2px solid var(--seo-ink);
}

html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
.app-footer a { color: #56534d; }
body::before { content: ""; display: block; height: 0; }
#top { scroll-margin-top: 12px; }

.license-strip {
  width: min(1120px, calc(100% - 24px));
  margin: 12px auto 0;
  border: var(--seo-rule);
  background: var(--seo-ink);
  color: #fff;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 10px 14px;
  font: 800 11px/1.25 "Arial Narrow", Arial, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.license-strip > span { color: #ffe257; white-space: nowrap; }
.license-strip p { margin: 0; }
.license-strip nav { display: flex; gap: 6px; }
.license-strip a { color: #fff; border: 1px solid #fff; padding: 7px 9px; text-decoration: none; }
.license-strip a:hover, .license-strip a:focus-visible { background: #fff; color: var(--seo-ink); }

.seo-shell {
  width: min(1120px, calc(100% - 24px));
  margin: 34px auto 72px;
  color: var(--seo-ink);
  font-family: Georgia, "Times New Roman", serif;
}

.seo-hero, .seo-section, .seo-toc, .seo-footer {
  border: var(--seo-rule);
  background: var(--seo-paper);
  box-shadow: 7px 7px 0 var(--seo-ink);
}

.seo-hero {
  padding: clamp(26px, 5vw, 54px);
  background:
    linear-gradient(90deg, var(--seo-red) 0 34%, #f7f2e8 34% 66%, var(--seo-blue) 66%) top/100% 9px no-repeat,
    var(--seo-paper);
}

.seo-kicker {
  margin: 0 0 10px;
  color: var(--seo-red);
  font: 900 11px/1.2 "Arial Narrow", Arial, sans-serif;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.seo-hero h2, .seo-section h2 {
  margin: 0;
  max-width: 920px;
  font: 900 clamp(31px, 5.6vw, 64px)/.96 "Arial Narrow", Arial, sans-serif;
  letter-spacing: -.045em;
  text-transform: uppercase;
}

.seo-lead { max-width: 900px; margin: 25px 0 0; font-size: clamp(17px, 2.2vw, 22px); line-height: 1.55; }

.seo-facts { display: grid; grid-template-columns: repeat(4, 1fr); margin: 34px 0 0; border: var(--seo-rule); }
.seo-facts div { padding: 14px 16px; background: var(--seo-paper-light); border-right: var(--seo-rule); }
.seo-facts div:last-child { border-right: 0; }
.seo-facts dt { color: #68635a; font: 800 10px/1.2 Arial, sans-serif; letter-spacing: .12em; text-transform: uppercase; }
.seo-facts dd { margin: 5px 0 0; font: 900 21px/1 Arial, sans-serif; }

.seo-toc { margin-top: 18px; display: flex; align-items: center; gap: 0; overflow-x: auto; box-shadow: 4px 4px 0 var(--seo-ink); }
.seo-toc strong, .seo-toc a { flex: 0 0 auto; padding: 13px 16px; border-right: var(--seo-rule); font: 800 11px/1.2 Arial, sans-serif; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.seo-toc strong { background: var(--seo-green); color: #fff; }
.seo-toc a:hover, .seo-toc a:focus-visible { background: var(--seo-red); color: #fff; }

.seo-section { margin-top: 30px; padding: clamp(24px, 4vw, 44px); scroll-margin-top: 16px; }
.seo-section-heading { display: grid; grid-template-columns: 72px 1fr; gap: 22px; align-items: start; }
.seo-section-heading > span { border: var(--seo-rule); background: var(--seo-red); color: #fff; padding: 14px 8px; text-align: center; box-shadow: 4px 4px 0 var(--seo-ink); font: 900 25px/1 Arial, sans-serif; }
.seo-section h2 { font-size: clamp(28px, 4vw, 47px); }

.seo-copy-columns { columns: 2; column-gap: 40px; margin-top: 28px; }
.seo-copy-columns p { margin: 0 0 18px; font-size: 17px; line-height: 1.65; break-inside: avoid; }

.seo-section--ink { background: var(--seo-ink); color: #fff; }
.seo-section--ink .seo-kicker { color: #ffe257; }
.career-steps { list-style: none; counter-reset: career; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 30px 0 0; padding: 0; }
.career-steps li { counter-increment: career; min-height: 112px; border: 2px solid #fff; background: #282828; padding: 16px 18px 16px 60px; position: relative; }
.career-steps li::before { content: counter(career, decimal-leading-zero); position: absolute; top: 17px; left: 15px; color: #ffe257; font: 900 17px/1 Arial, sans-serif; }
.career-steps strong, .career-steps span { display: block; }
.career-steps strong { font: 900 16px/1.25 Arial, sans-serif; text-transform: uppercase; }
.career-steps span { margin-top: 8px; color: #dedede; line-height: 1.45; }

.mechanics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.mechanics-grid article { border: var(--seo-rule); background: var(--seo-paper-light); padding: 20px; box-shadow: 4px 4px 0 var(--seo-ink); }
.mechanics-grid b { color: var(--seo-red); font: 900 12px Arial, sans-serif; }
.mechanics-grid h3 { margin: 12px 0 8px; font: 900 20px/1.05 "Arial Narrow", Arial, sans-serif; text-transform: uppercase; }
.mechanics-grid p { margin: 0; line-height: 1.5; }

.start-paths { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.start-paths article { border: var(--seo-rule); background: var(--seo-paper-light); padding: 22px; position: relative; }
.start-paths article::after { content: ""; position: absolute; height: 7px; left: -2px; right: -2px; bottom: -2px; background: var(--seo-blue); border: var(--seo-rule); }
.start-paths article:nth-child(2)::after { background: var(--seo-red); }
.start-paths article:nth-child(3)::after { background: var(--seo-green); }
.start-paths span { color: var(--seo-red); font: 900 10px Arial, sans-serif; letter-spacing: .12em; }
.start-paths h3 { margin: 12px 0; font: 900 22px/1.05 "Arial Narrow", Arial, sans-serif; text-transform: uppercase; }
.start-paths p { margin: 0; line-height: 1.55; }
.seo-note { border-left: 7px solid var(--seo-red); background: #fff9e8; margin: 27px 0 0; padding: 17px 20px; line-height: 1.55; }

.seo-section--blue { background: var(--seo-blue); color: #fff; }
.seo-section--blue .seo-kicker { color: #ffe257; }

.seo-section--split { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(280px, .75fr); gap: 32px; align-items: start; }
.tip-list { margin: 24px 0 0; padding: 0; list-style: none; }
.tip-list li { border-top: var(--seo-rule); padding: 13px 5px 13px 34px; position: relative; line-height: 1.48; }
.tip-list li::before { content: "→"; position: absolute; left: 4px; color: var(--seo-red); font-weight: 900; }
.version-card { border: var(--seo-rule); background: var(--seo-green); color: #fff; padding: 24px; box-shadow: 6px 6px 0 var(--seo-ink); }
.version-card span { font: 800 10px Arial, sans-serif; letter-spacing: .12em; }
.version-card strong { display: block; margin: 10px 0; color: #ffe257; font: 900 74px/.85 "Arial Narrow", Arial, sans-serif; }
.version-card p { line-height: 1.5; }
.version-card a { display: block; margin-top: 18px; border: 2px solid #fff; background: var(--seo-red); color: #fff; padding: 12px; text-align: center; font: 900 11px Arial, sans-serif; letter-spacing: .08em; text-decoration: none; }

.faq-list { margin-top: 28px; }
.faq-list details { border: var(--seo-rule); background: var(--seo-paper-light); margin-top: 10px; }
.faq-list summary { cursor: pointer; padding: 16px 52px 16px 18px; font: 900 16px/1.3 Arial, sans-serif; position: relative; }
.faq-list summary::after { content: "+"; position: absolute; top: 13px; right: 17px; color: var(--seo-red); font-size: 24px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { margin: 0; border-top: 1px solid #817b71; padding: 16px 18px; line-height: 1.55; }

.seo-footer { margin-top: 30px; background: var(--seo-red); color: #fff; padding: 24px 28px; display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.seo-footer strong { font: 900 22px Arial, sans-serif; }
.seo-footer p { margin: 7px 0 0; }
.seo-footer nav { display: flex; flex-wrap: wrap; gap: 8px; }
.seo-footer a { border: 1px solid #fff; color: #fff; padding: 8px 10px; font: 800 10px Arial, sans-serif; letter-spacing: .06em; text-decoration: none; text-transform: uppercase; }

@media (max-width: 760px) {
  .license-strip { grid-template-columns: 1fr; gap: 7px; }
  .license-strip nav { display: none; }
  .seo-shell { width: min(100% - 18px, 1120px); margin-top: 24px; }
  .seo-hero, .seo-section { padding: 24px 18px; box-shadow: 4px 4px 0 var(--seo-ink); }
  .seo-facts { grid-template-columns: repeat(2, 1fr); }
  .seo-facts div:nth-child(2) { border-right: 0; }
  .seo-facts div:nth-child(-n+2) { border-bottom: var(--seo-rule); }
  .seo-section-heading { grid-template-columns: 48px 1fr; gap: 14px; }
  .seo-section-heading > span { padding: 10px 4px; font-size: 18px; }
  .seo-copy-columns { columns: 1; }
  .career-steps, .mechanics-grid, .start-paths, .seo-section--split { grid-template-columns: 1fr; }
  .career-steps li { min-height: auto; }
  .seo-footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}