:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #142033;
  --muted: #5c6b80;
  --line: #d5dde6;
  --accent: #0f3d73;
  --accent-ink: #ffffff;
  --soft: #e8eef6;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #10141c;
    --card: #1a2130;
    --ink: #e7eef8;
    --muted: #a7b4c7;
    --line: #2c3648;
    --accent: #8eb6ef;
    --accent-ink: #10141c;
    --soft: #243044;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 17px/1.5 "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
}
a { color: var(--accent); }
.wrap { width: min(960px, calc(100% - 32px)); margin: 0 auto; }
header, footer { background: var(--card); border-color: var(--line); }
header { border-bottom: 1px solid var(--line); }
footer { border-top: 1px solid var(--line); margin-top: 48px; }
.bar, .foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  padding: 14px 0;
}
.brand { color: var(--ink); font-weight: 750; text-decoration: none; letter-spacing: -0.02em; }
nav { display: flex; flex-wrap: wrap; gap: 8px 14px; }
nav a { color: var(--muted); text-decoration: none; font-weight: 650; }
nav a[aria-current="page"], nav a:hover { color: var(--ink); }
main { padding: 20px 0 8px; }
h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 1.35rem; margin: 36px 0 10px; }
.lede { margin: 0 0 16px; color: var(--muted); max-width: 42rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
}
.fields { display: grid; gap: 12px; }
@media (min-width: 720px) { .fields { grid-template-columns: 1fr 1fr; } }
label { display: block; font-weight: 700; }
input {
  width: 100%;
  margin-top: 6px;
  min-height: 56px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  color: var(--ink);
  font: 700 1.35rem/1.2 ui-monospace, "Cascadia Code", Consolas, monospace;
}
input:focus { outline: 3px solid var(--accent); outline-offset: 1px; }
.actions, .links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
button, .links a {
  min-height: 48px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font: 700 1rem/1 ui-sans-serif, system-ui, sans-serif;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
button.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.hint, .status, .note { min-height: 1.4em; margin: 10px 0 0; color: var(--muted); }
.prose { max-width: 42rem; }
.prose p, .prose li { color: var(--muted); }
.faq details {
  border-top: 1px solid var(--line);
  padding: 12px 0;
}
.faq summary { font-weight: 750; cursor: pointer; }
.faq p { margin: 8px 0 0; color: var(--muted); }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { font-size: 0.85rem; color: var(--muted); }
td:first-child, td.mono { font-family: ui-monospace, Consolas, monospace; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; }
@media print {
  header, footer, .no-print, .actions, nav { display: none !important; }
  body, .card, table { background: #fff; color: #000; }
  a { color: #000; text-decoration: none; }
  .wrap { width: auto; }
  .table-wrap { overflow: visible; border: 0; }
}