:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --ink: #15171a;
  --muted: #5b6168;
  --line: #e2e4e7;
  --brand: #4b2bd6;
  --brand-ink: #ffffff;
  --ok-bg: #e6f4ec;
  --ok-ink: #1d6b3a;
  --part-bg: #fff4dc;
  --part-ink: #7a5300;
  --hero-a: #3f2bb8;
  --hero-b: #c24f9a;
  --hero-c: #f0a43c;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1113;
    --panel: #171a1d;
    --ink: #eceef1;
    --muted: #a3a9b1;
    --line: #2a2e33;
    --brand: #8c74ff;
    --brand-ink: #0f1113;
    --ok-bg: #173325;
    --ok-ink: #7fd39c;
    --part-bg: #3a2c10;
    --part-ink: #f2c46b;
  }
}

:root[data-theme="dark"] {
  --bg: #0f1113;
  --panel: #171a1d;
  --ink: #eceef1;
  --muted: #a3a9b1;
  --line: #2a2e33;
  --brand: #8c74ff;
  --brand-ink: #0f1113;
  --ok-bg: #173325;
  --ok-ink: #7fd39c;
  --part-bg: #3a2c10;
  --part-ink: #f2c46b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--brand); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 0.75rem; }

.skip {
  position: absolute; left: -9999px; top: 0;
}
.skip:focus { left: 16px; top: 8px; background: var(--panel); padding: 6px 10px; z-index: 10; }

.topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px;
  padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
.product { color: var(--muted); }
.header-links { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; }

.hero {
  padding: 56px 16px 48px;
  color: #fff;
  background: linear-gradient(120deg, var(--hero-a) 0%, var(--hero-b) 55%, var(--hero-c) 100%);
}
.hero h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); max-width: 22ch; }
.hero .lede { max-width: 60ch; font-size: 1.05rem; opacity: 0.95; }
.hero .meta { font-size: 0.9rem; opacity: 0.85; margin: 0; }

.tabs {
  position: sticky; top: 0; z-index: 5;
  display: flex; gap: 4px; overflow-x: auto;
  padding: 0 16px; background: var(--bg); border-bottom: 1px solid var(--line);
}
.tabs a {
  padding: 12px 10px; text-decoration: none; color: var(--muted); white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.tabs a:hover, .tabs a:focus-visible { color: var(--ink); border-bottom-color: var(--brand); }

.layout {
  display: grid; gap: 24px; max-width: 1120px; margin: 0 auto; padding: 24px 16px 56px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  .layout { grid-template-columns: 320px 1fr; align-items: start; }
  .side { position: sticky; top: 56px; }
}

.card, .group, .gaps, .content > section {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px;
}
.content { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; min-width: 0; }
.content > section { scroll-margin-top: 60px; }
.side { display: grid; gap: 16px; }
.card { scroll-margin-top: 60px; }

.facts { display: grid; grid-template-columns: 1fr; gap: 4px 0; margin: 0 0 12px; }
.facts dt { font-weight: 600; margin-top: 10px; }
.facts dd { margin: 0; color: var(--muted); }
.fine { font-size: 0.9rem; color: var(--muted); }

.intro, .blurb { color: var(--muted); margin-bottom: 14px; }

.group { margin-bottom: 12px; }
.controls { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.control { border-top: 1px solid var(--line); padding-top: 12px; }
.control-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 6px; }
.badge {
  font-size: 0.8rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; border: 1px solid currentColor;
}
.badge.ok { background: var(--ok-bg); color: var(--ok-ink); }
.badge.partly { background: var(--part-bg); color: var(--part-ink); }
.date { font-size: 0.85rem; color: var(--muted); }
.statement { font-weight: 500; margin-bottom: 4px; }
.detail { color: var(--muted); font-size: 0.95rem; }
.note { font-size: 0.92rem; color: var(--muted); margin: 0; }

.gap-list { padding-left: 1.2rem; margin: 0; display: grid; gap: 10px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 10px 10px; border-bottom: 1px solid var(--line); }
thead th { color: var(--muted); font-weight: 600; }
tbody th { font-weight: 600; white-space: nowrap; }

.updates, .resources { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.updates time { font-weight: 600; margin-right: 6px; color: var(--muted); }

.foot { text-align: center; color: var(--muted); font-size: 0.9rem; padding: 0 16px 40px; }

@media (max-width: 899px) {
  .hero { padding: 40px 16px 36px; }
}