:root {
  --night: #060c16;
  --gold: #e2a24c;
  --sun: #f0b657;
  --ink: #0d1620;
  --ink-2: #46586a;
  --paper: #eceff4;
  --card: rgba(255, 255, 255, 0.72);
  --line: rgba(13, 22, 32, 0.14);
  --line-2: rgba(13, 22, 32, 0.07);
  --warn-bg: rgba(226, 162, 76, 0.14);
  --d: "PT Serif", "Iowan Old Style", Georgia, serif;
  --b: "PT Sans", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --m: "SF Mono", "PT Mono", ui-monospace, Menlo, monospace;
  --shell: 46rem;
  --pad: clamp(1.1rem, 0.6rem + 2vw, 2.5rem);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8eef5; --ink-2: #9fb3c6; --paper: #060b12;
    --card: rgba(14, 26, 40, 0.66);
    --line: rgba(160, 196, 228, 0.18); --line-2: rgba(160, 196, 228, 0.09);
    --gold: #d9a05a; --warn-bg: rgba(217, 160, 90, 0.12);
  }
}
:root[data-theme="dark"] {
  --ink: #e8eef5; --ink-2: #9fb3c6; --paper: #060b12;
  --card: rgba(14, 26, 40, 0.66);
  --line: rgba(160, 196, 228, 0.18); --line-2: rgba(160, 196, 228, 0.09);
  --gold: #d9a05a; --warn-bg: rgba(217, 160, 90, 0.12);
}
:root[data-theme="light"] {
  --ink: #0d1620; --ink-2: #46586a; --paper: #eceff4;
  --card: rgba(255, 255, 255, 0.72);
  --line: rgba(13, 22, 32, 0.14); --line-2: rgba(13, 22, 32, 0.07);
  --gold: #e2a24c; --warn-bg: rgba(226, 162, 76, 0.14);
}

* { box-sizing: border-box; }
body {
  margin: 0; font-family: var(--b); color: var(--ink); background: var(--paper);
  line-height: 1.68; -webkit-font-smoothing: antialiased;
}
.shell { width: min(var(--shell), 100%); margin-inline: auto; padding-inline: var(--pad); }

.top {
  border-bottom: 1px solid var(--line-2);
  background: linear-gradient(180deg, rgba(6, 12, 22, 0.9), rgba(6, 12, 22, 0.72));
  color: #fff;
}
.top .shell { display: flex; align-items: center; gap: 1rem; padding-block: 1.1rem; }
.mark { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--sun); text-decoration: none; font-weight: 700; }
.mark svg { width: 1.4rem; height: 1.4rem; flex: none; }
.mark span { font-family: var(--d); font-size: 1.15rem; letter-spacing: 0.01em; color: #fff; }
.top nav { margin-left: auto; display: flex; gap: 1.1rem; font-size: 0.9rem; }
.top nav a { color: rgba(255, 255, 255, 0.76); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current] { color: #fff; text-decoration: underline; text-underline-offset: 4px; }

header.doc { padding-block: clamp(2.4rem, 1rem + 5vw, 4.5rem) 1.5rem; }
.tag {
  font-family: var(--m); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 0.9rem;
}
h1 { font-family: var(--d); font-weight: 700; font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3rem); line-height: 1.14; margin: 0 0 1rem; }
.lead { font-size: 1.08rem; color: var(--ink-2); margin: 0 0 1.2rem; max-width: 38rem; }
.upd { font-family: var(--m); font-size: 0.78rem; color: var(--ink-2); margin: 0; }

main { padding-bottom: 4rem; }
section { padding-top: 2.4rem; }
h2 {
  font-family: var(--d); font-size: clamp(1.25rem, 1rem + 1vw, 1.6rem); line-height: 1.25;
  margin: 0 0 0.9rem; padding-top: 1.4rem; border-top: 1px solid var(--line-2);
}
h3 { font-family: var(--b); font-size: 1rem; margin: 1.6rem 0 0.5rem; }
p { margin: 0 0 1rem; }
ul { margin: 0 0 1rem; padding-left: 1.15rem; }
li { margin-bottom: 0.5rem; }
a { color: var(--ink); text-decoration-color: var(--gold); text-underline-offset: 3px; }
strong { font-weight: 700; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 0.9rem;
  padding: clamp(1rem, 0.7rem + 1vw, 1.5rem); margin-bottom: 1.2rem;
}
dl.req { margin: 0; display: grid; grid-template-columns: minmax(0, 13rem) minmax(0, 1fr); gap: 0.45rem 1.2rem; }
dl.req dt { color: var(--ink-2); font-size: 0.92rem; }
dl.req dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
@media (max-width: 34rem) { dl.req { grid-template-columns: 1fr; gap: 0.1rem 0; } dl.req dd { margin-bottom: 0.6rem; } }

.fill {
  display: inline-block; background: var(--warn-bg); border: 1px dashed var(--gold);
  border-radius: 0.35rem; padding: 0.05rem 0.45rem; font-family: var(--m); font-size: 0.82rem;
  color: var(--gold);
}
.note {
  border-left: 3px solid var(--gold); padding: 0.1rem 0 0.1rem 1rem; margin: 0 0 1.2rem;
  color: var(--ink-2);
}
table { width: 100%; border-collapse: collapse; margin: 0 0 1.2rem; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.6rem 0.8rem 0.6rem 0; border-bottom: 1px solid var(--line-2); }
th { font-weight: 700; color: var(--ink-2); font-size: 0.85rem; }
.scroll { overflow-x: auto; }

footer { border-top: 1px solid var(--line-2); padding-block: 1.6rem 3rem; color: var(--ink-2); font-size: 0.9rem; }
footer .row { display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; justify-content: space-between; }