:root {
  color-scheme: light dark;
  --bg: #f5f2ea;
  --surface: #fffaf0;
  --panel: #f8efd9;
  --ink: #201a22;
  --muted: #6e6270;
  --line: rgba(63, 50, 58, 0.18);
  --gold: #b5892f;
  --teal: #2d7d7a;
  --rose: #a84a62;
  --shadow: 0 18px 55px rgba(43, 35, 28, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17131f;
    --surface: #211c2b;
    --panel: #2b2533;
    --ink: #f5ebdc;
    --muted: #c9b9a7;
    --line: rgba(245, 235, 220, 0.15);
    --gold: #d5ad55;
    --teal: #70c6bf;
    --rose: #d47a92;
    --shadow: 0 18px 55px rgba(0, 0, 0, 0.32);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--gold) 12%, transparent), transparent 26rem),
    linear-gradient(180deg, var(--bg), color-mix(in srgb, var(--bg) 88%, var(--teal)));
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}

a {
  color: color-mix(in srgb, var(--teal) 72%, var(--ink));
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.docs-shell {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 44px;
}

.docs-header,
.docs-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.docs-header {
  flex-wrap: wrap;
}

.brand {
  display: grid;
  gap: 2px;
  color: var(--ink);
  text-decoration: none;
}

.brand strong {
  font-size: 21px;
  line-height: 1;
}

.brand span,
.doc-label,
.update-note {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.docs-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.docs-nav a,
.back-link,
.doc-control {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 76%, transparent);
  color: var(--ink);
  text-decoration: none;
}

.docs-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.doc-control {
  min-width: 78px;
  justify-content: center;
  font-weight: 700;
}

.doc-exit {
  border-color: color-mix(in srgb, var(--rose) 40%, var(--line));
  color: color-mix(in srgb, var(--rose) 72%, var(--ink));
}

.doc-hero,
.doc-article {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
}

.doc-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.6fr);
  gap: 24px;
  align-items: end;
  margin-top: 10px;
  padding: clamp(22px, 4vw, 42px);
}

.doc-hero h1,
.doc-article h1 {
  max-width: 880px;
  margin: 8px 0 12px;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

.doc-hero p,
.doc-article .lead {
  max-width: 760px;
  margin: 0;
  color: color-mix(in srgb, var(--ink) 78%, var(--muted));
  font-size: clamp(17px, 2vw, 21px);
}

.doc-hero-card {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--gold) 38%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--gold) 16%, transparent), transparent),
    color-mix(in srgb, var(--panel) 86%, transparent);
}

.doc-hero-card strong {
  font-size: 18px;
  line-height: 1.2;
}

.doc-hero-card span {
  color: var(--muted);
  font-size: 14px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.article-card {
  display: grid;
  gap: 10px;
  min-height: 176px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--ink);
  text-decoration: none;
}

.article-card h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.16;
}

.article-card p {
  margin: 0;
  color: var(--muted);
}

.doc-article {
  margin-top: 10px;
  padding: clamp(20px, 4vw, 48px);
}

.doc-article h2 {
  margin: 34px 0 10px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.12;
}

.doc-article h3 {
  margin: 24px 0 8px;
  font-size: 20px;
  line-height: 1.2;
}

.doc-article p,
.doc-article li {
  max-width: 850px;
  font-size: 17px;
}

.doc-article ul,
.doc-article ol {
  display: grid;
  gap: 8px;
  margin: 10px 0 0;
  padding-left: 24px;
}

.section-list,
.help-list {
  display: grid;
  gap: 12px;
  max-width: 930px;
  margin: 18px 0;
}

.section-list article,
.help-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 70%, transparent);
  padding: 14px;
}

.section-list h3,
.help-list h3 {
  margin-top: 0;
}

.inline-note {
  color: var(--muted);
  font-size: 14px;
}

.callout {
  max-width: 900px;
  margin: 24px 0;
  padding: 16px;
  border: 1px solid color-mix(in srgb, var(--gold) 44%, var(--line));
  border-radius: 8px;
  background: color-mix(in srgb, var(--gold) 10%, var(--surface));
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 4px;
}

.toc a {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
  color: var(--ink);
  text-decoration: none;
}

.docs-footer {
  align-items: flex-start;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .docs-shell {
    width: min(100% - 18px, 1120px);
    padding-top: 8px;
  }

  .docs-header,
  .docs-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .docs-header > * {
    min-width: 0;
  }

  .brand {
    max-width: 100%;
  }

  .brand span {
    overflow-wrap: anywhere;
    letter-spacing: 0.04em;
  }

  .docs-actions {
    margin-left: 0;
    width: 100%;
  }

  .docs-actions a {
    flex: 1 0 0;
    min-height: 40px;
  }

  .docs-nav {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    width: 100%;
    max-width: 100%;
    padding-bottom: 4px;
  }

  .docs-nav a {
    flex: 0 0 auto;
  }

  .doc-hero,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .doc-hero,
  .doc-article {
    padding: 18px;
  }

  .doc-article p,
  .doc-article li {
    font-size: 16px;
  }
}