:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --text: #1c1b19;
  --muted: #5f5c55;
  --line: #e3ded4;
  --accent: #1c1b19;
  --accent-text: #ffffff;
  --soft: #efe9fb;
  --link: #3a2f8f;
  --ok: #1e6b3a;
  --error: #a3211d;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --surface: #212125;
    --text: #f2f0ea;
    --muted: #b3afa6;
    --line: #37363b;
    --accent: #f2f0ea;
    --accent-text: #17171a;
    --soft: #2a2740;
    --link: #b9adff;
    --ok: #7fd49c;
    --error: #ff9a94;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--link); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 2px;
}

.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-text); padding: 0.5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }

.top {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 0.75rem clamp(1rem, 4vw, 2.5rem);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 800; font-size: 1.125rem; letter-spacing: -0.01em; color: var(--text); text-decoration: none; }
.top nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 1.25rem; }
.top nav a { color: var(--text); text-decoration: none; font-weight: 600; padding: 0.375rem 0; }
.top nav a:hover { text-decoration: underline; }
.top nav a.button { padding: 0.5rem 1rem; }

.button, button.button {
  display: inline-block;
  padding: 0.625rem 1.125rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text) !important;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.button[disabled] { opacity: 0.6; cursor: progress; }

.layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 3rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.5rem clamp(1rem, 4vw, 2.5rem) 4rem;
}
.layout--single { grid-template-columns: minmax(0, 46rem); justify-content: center; }

.toc { position: sticky; top: 5rem; align-self: start; font-size: 0.9375rem; }
.toc__title { margin: 0 0 0.5rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; color: var(--muted); }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 0.25rem 0; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { text-decoration: underline; }

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-top: 1.5rem; }
  .toc { position: static; padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
}

h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 1rem; }
h2 { font-size: 1.625rem; line-height: 1.2; letter-spacing: -0.01em; margin: 3rem 0 0.75rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.1875rem; margin: 2rem 0 0.5rem; }
h4 { font-size: 1rem; margin: 1.25rem 0 0.5rem; }
p, ul, ol { margin: 0 0 1rem; }
li { margin: 0.25rem 0; }
code { background: var(--soft); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.9em; }

.eyebrow { margin: 0 0 0.5rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; color: var(--muted); }
.lead { font-size: 1.1875rem; color: var(--muted); }
.muted { color: var(--muted); font-weight: 400; }
.note { padding: 0.875rem 1rem; background: var(--soft); border-radius: var(--radius); }

.table-wrap { overflow-x: auto; margin: 0 0 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
th, td { text-align: left; vertical-align: top; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--line); }
tbody tr:last-child td { border-bottom: 0; }
thead th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
td:first-child { font-weight: 600; white-space: nowrap; }
td:nth-child(2) { color: var(--muted); white-space: nowrap; }
tr.group th { background: var(--soft); font-size: 0.8125rem; }

details { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); margin: 0 0 0.5rem; }
summary { cursor: pointer; padding: 0.75rem 1rem; font-weight: 600; }
details p { padding: 0 1rem 0.75rem; margin: 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; margin: 2rem 0; }
.card { display: block; padding: 1.5rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); text-decoration: none; }
.card h2 { margin: 0 0 0.5rem; padding: 0; border: 0; }
.card p { color: var(--muted); }
.card__link { font-weight: 700; color: var(--link); }
.card:hover .card__link { text-decoration: underline; }

.form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.field { display: grid; gap: 0.375rem; }
.field label { font-weight: 600; }
.field .hint { font-size: 0.875rem; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--muted);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
.field textarea { min-height: 10rem; resize: vertical; }
.field--trap { position: absolute; left: -9999px; }
.status { padding: 0.875rem 1rem; border-radius: var(--radius); font-weight: 600; }
.status[hidden] { display: none; }
.status--ok { background: var(--soft); color: var(--ok); }
.status--error { background: var(--soft); color: var(--error); }

.foot { border-top: 1px solid var(--line); padding: 1.5rem clamp(1rem, 4vw, 2.5rem); color: var(--muted); font-size: 0.9375rem; text-align: center; }