:root { color-scheme: dark; --bg: #101212; --surface: #171919; --text: #e7e1d5; --muted: #aaa69e; --border: #303332; --accent: #c69c5e; --on-accent: #1b1a12; }
@media (prefers-color-scheme: light) { :root { color-scheme: light; --bg: #f5f2eb; --surface: #fffefb; --text: #252721; --muted: #555b54; --border: #cfc9bc; --accent: #80561f; --on-accent: #fff; } }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 system-ui, sans-serif; }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
header, main, footer { max-width: 1040px; margin: auto; padding: 24px 32px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--border); }
header nav { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
header a { display: inline-block; padding-block: 8px; }
.brand { font: 400 28px/1.15 Georgia, serif; color: var(--text); text-decoration: none; }
h1, h2 { font-family: Georgia, serif; font-weight: 400; line-height: 1.12; }
h1 { font-size: clamp(38px, 6vw, 62px); margin: 12px 0 20px; letter-spacing: -.025em; }
h2 { font-size: clamp(28px, 4vw, 36px); margin: 10px 0 28px; }
h3 { font-size: 20px; font-weight: 600; line-height: 1.35; margin: 0 0 10px; }
p { margin: 0 0 14px; }
.intro { padding: 32px 0 40px; }
.eyebrow { color: var(--accent); text-transform: uppercase; font: 12px/1.5 ui-monospace, monospace; letter-spacing: .1em; }
.lead { max-width: 620px; font-size: 19px; color: var(--muted); }
.jump-links { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 26px; }
.jump-links a { padding: 5px 0; }
section { scroll-margin-top: 24px; }
.steps { list-style: none; padding: 0; counter-reset: step; }
.steps > li { position: relative; counter-increment: step; border-top: 1px solid var(--border); padding: 26px 0 26px 56px; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 23px; width: 34px; height: 34px; display: grid; place-items: center; color: var(--accent); border: 1px solid var(--accent); border-radius: 50%; font: 20px Georgia, serif; }
.steps > li > p { max-width: 760px; }
.aside, figcaption { color: var(--muted); font-size: 14px; }
figure { margin: 24px 0 0; }
.place-figure { display: grid; grid-template-columns: minmax(220px, 320px) minmax(180px, 1fr); gap: 28px; align-items: start; max-width: 730px; }
.annotated { display: block; position: relative; min-width: 0; }
.annotated img { display: block; width: 100%; height: auto; border: 1px solid var(--border); border-radius: 3px; background: #171919; }
.callout, .key { display: inline-grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--on-accent); font: 600 13px/1 system-ui, sans-serif; }
.callout { position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%); width: 28px; height: 28px; border: 2px solid var(--bg); box-shadow: 0 0 0 1px var(--accent); pointer-events: none; }
.key { width: 22px; height: 22px; margin-right: 5px; }
figcaption p { margin: 0 0 18px; }
.timeline-figure { display: grid; grid-template-columns: minmax(220px, 358px) minmax(160px, 1fr); gap: 28px; align-items: start; margin-bottom: 22px; }
#faq { padding-top: 40px; }
details { border-top: 1px solid var(--border); scroll-margin-top: 24px; }
details:last-child { border-bottom: 1px solid var(--border); }
summary { cursor: pointer; font-size: 17px; font-weight: 500; padding: 19px 4px; }
summary::marker { color: var(--accent); }
details:target { background: var(--surface); }
.answer { padding: 0 24px 20px; max-width: 880px; }
.answer p { max-width: 780px; }
.date-examples, .downloads { display: grid; grid-template-columns: minmax(110px, 1fr) 3fr; margin: 20px 0; }
dt, dd { padding: 12px 0; border-top: 1px solid var(--border); }
dt { font-weight: 600; padding-right: 20px; }
dd { margin: 0; }
.downloads { grid-template-columns: minmax(160px, 1.3fr) 2fr; }
.ready { padding-top: 30px; font: 24px/1.3 Georgia, serif; }
footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; padding-bottom: 36px; }
.skip-link { position: fixed; left: 12px; top: -100px; z-index: 10; padding: 10px 16px; color: var(--on-accent); background: var(--accent); }
.skip-link:focus { top: 12px; }
@media (max-width: 600px) {
  header, main, footer { padding-inline: 20px; }
  header nav { gap: 16px; }
  .intro { padding-top: 22px; }
  .steps > li { padding-left: 0; }
  .steps > li::before { top: 24px; }
  .steps h3 { padding-left: 48px; min-height: 34px; }
  .place-figure { grid-template-columns: 1fr; gap: 18px; }
  .place-shot { max-width: 320px; }
  .timeline-figure { grid-template-columns: 1fr; gap: 18px; }
  .timeline-shot { max-width: 358px; }
  .answer { padding-inline: 4px; }
  summary { font-size: 16px; }
  .downloads { grid-template-columns: 1fr; }
  .downloads dt { padding-bottom: 3px; }
  .downloads dd { border: 0; padding: 0 0 14px; }
  .date-examples { grid-template-columns: 105px minmax(0, 1fr); }
  .timeline-shot .callout { width: 22px; height: 22px; font-size: 11px; }
}