:root {
  --paper: #f4f6f8;
  --white: #ffffff;
  --navy: #102a43;
  --muted: #52657a;
  --line: #d7e0e8;
  --teal: #087f8c;
  --amber: #c96b12;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--navy); font-family: Arial, Helvetica, sans-serif; line-height: 1.6; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
.site-header, footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; max-width: 1120px; margin: 0 auto; padding: 26px 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--navy); font-size: 23px; font-weight: 700; text-decoration: none; letter-spacing: -1px; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 8px; background: var(--navy); color: var(--white); font-family: monospace; font-size: 18px; }
nav { display: flex; gap: 24px; font-size: 13px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, footer a:hover { color: var(--teal); }
main { max-width: 1120px; margin: 0 auto; padding: 60px 30px; }
.hero { max-width: 700px; padding: 42px 0 58px; }
.eyebrow { margin: 0 0 12px; color: var(--teal); font-size: 12px; font-weight: 700; }
h1 { margin: 0 0 22px; font-size: clamp(40px, 7vw, 68px); line-height: 1.05; letter-spacing: -3px; }
.hero > p:not(.eyebrow) { max-width: 590px; color: var(--muted); font-size: 17px; }
.primary-link, .download-button { display: inline-block; margin-top: 20px; padding: 13px 20px; border-radius: 7px; background: var(--navy); color: var(--white); text-decoration: none; font-weight: 700; }
.primary-link:hover, .download-button:hover { background: var(--teal); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; padding-top: 32px; border-top: 1px solid var(--line); }
.service-grid span { color: var(--amber); font-family: monospace; font-size: 12px; }
.service-grid h2 { margin: 10px 0 8px; font-size: 16px; }
.service-grid p { color: var(--muted); font-size: 13px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
footer a { text-decoration: none; }
.download-main { display: grid; place-items: center; min-height: 62vh; }
.download-card { width: min(100%, 580px); padding: 38px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); }
.download-card h1 { font-size: 34px; letter-spacing: -1.5px; }
.download-card > p:not(.eyebrow) { color: var(--muted); font-size: 14px; }
.file-facts { margin: 24px 0; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.file-facts div { display: flex; justify-content: space-between; gap: 20px; padding: 7px 0; font-size: 12px; }
.file-facts dt { color: var(--muted); }
.file-facts dd { margin: 0; text-align: right; }
.download-button { display: block; margin-top: 0; text-align: center; }
.download-note { min-height: 22px; color: var(--teal); font-size: 12px; }
.catalog-link { color: var(--teal); font-size: 12px; }
.invalid-download, .error-page { max-width: 600px; margin: 70px auto; padding: 30px; border: 1px solid var(--line); background: var(--white); }
.text-page { max-width: 760px; }
.text-page h1 { font-size: 42px; }
.text-page h2 { margin-top: 30px; font-size: 19px; }
.text-page p, .text-page li { color: var(--muted); font-size: 14px; }
.text-page a { color: var(--teal); }
.error-page h1 { font-size: 34px; }
.error-page p { color: var(--muted); }
@media (max-width: 700px) {
  .site-header, footer { padding: 20px; }
  main { padding: 34px 20px; }
  .service-grid { grid-template-columns: 1fr; gap: 18px; }
  .download-card { padding: 24px; }
  .download-card h1 { font-size: 29px; }
}