:root {
  --ink: #192c35;
  --muted: #415660;
  --paper: #ffffff;
  --ground: #f3f5f5;
  --line: #81929a;
  --action: #15546b;
  --error: #a51b24;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ground); color: var(--ink); font: 1rem/1.6 system-ui, sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; background: var(--paper); overflow-wrap: anywhere; }
nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
a { color: var(--action); text-underline-offset: 0.2em; }
nav a { display: inline-flex; align-items: center; min-height: 2.75rem; }
[aria-current] { font-weight: 700; text-decoration-thickness: 0.15em; }
#breadcrumb, .hint { color: var(--muted); font-size: 0.875rem; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 1rem 0; }
h2 { font-size: 1.125rem; line-height: 1.4; margin: 0 0 1rem; }
h3 { font-size: 1rem; margin: 1rem 0 0.25rem; }
p { margin: 0.75rem 0; }
section { border-top: 1px solid var(--line); padding-top: 1.5rem; margin-top: 1.5rem; }
.notice { border-left: 0.25rem solid var(--action); padding-left: 0.75rem; font-weight: 600; }
dl { margin: 0; }
dl div { display: flex; justify-content: space-between; gap: 1rem; margin: 0.75rem 0; }
dd { margin: 0; font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }
label { display: block; margin-top: 1rem; }
button, select { width: 100%; min-height: 2.75rem; font: inherit; border: 1px solid var(--action); border-radius: 0.25rem; padding: 0.5rem 0.75rem; margin-top: 0.75rem; }
select { background: var(--paper); color: var(--ink); }
button { background: var(--action); color: var(--paper); cursor: pointer; }
button:disabled { opacity: 0.65; cursor: wait; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
#status { font-weight: 700; }
#error { color: var(--error); font-weight: 600; }
.manual-rail { overflow-wrap: anywhere; }
@media (min-width: 48rem) { main { margin-top: 2rem; padding: 2rem 3rem 3rem; } }