:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c232c;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #4ea1ff;
  --green: #2ea043;
  --amber: #d29922;
  --red: #f85149;
  --up: #2ea043;
  --down: #f85149;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #0b0f14; color: #e6edf3; padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }

header.page {
  padding: 28px 32px 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #131820 0%, var(--bg) 100%);
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px;
}
.brand h1 { margin: 0 0 4px 0; font-size: 26px; letter-spacing: -0.01em; }
.brand .sub { margin: 0; color: var(--muted); font-size: 14px; }
.meta { display: grid; grid-template-columns: repeat(4, auto); gap: 8px 24px; font-size: 13px; }
.meta .k { color: var(--muted); margin-right: 8px; }
.meta .v { color: var(--text); font-weight: 500; }

nav.toc {
  position: sticky; top: 0; z-index: 5;
  display: flex; flex-wrap: wrap; gap: 4px 14px;
  padding: 10px 32px;
  background: rgba(14,17,22,0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
nav.toc a { color: var(--muted); padding: 4px 8px; border-radius: 6px; }
nav.toc a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }

main { max-width: 1120px; margin: 24px auto 60px; padding: 0 24px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 26px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 16px 0; font-size: 19px; letter-spacing: -0.01em; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.card h3 { margin: 22px 0 10px 0; font-size: 15px; color: var(--text); }
.card p { margin: 8px 0; }
.card ul, .card ol { padding-left: 22px; }
.card li { margin: 4px 0; }

.src, .note, .placeholder { color: var(--muted); font-size: 13px; }
.warn { background: rgba(210,153,34,0.08); border-left: 3px solid var(--amber); padding: 10px 14px; border-radius: 4px; font-size: 14px; }
.placeholder { font-style: italic; }

table.grid { width: 100%; border-collapse: collapse; font-size: 14px; margin: 6px 0 4px; }
table.grid th, table.grid td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.grid thead th { background: var(--panel-2); color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
table.grid tbody tr:hover { background: rgba(78,161,255,0.04); }

.up { color: var(--up); font-variant-numeric: tabular-nums; }
.down { color: var(--down); font-variant-numeric: tabular-nums; }

.rag-green { color: var(--green); }
.rag-amber { color: var(--amber); }
.rag-red { color: var(--red); }

ul.tldr { list-style: none; padding: 0; }
ul.tldr li { padding: 6px 0; border-bottom: 1px dashed var(--border); }
ul.tldr li:last-child { border-bottom: none; }

footer.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 40px;
  color: var(--muted);
  font-size: 12px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  border-top: 1px solid var(--border);
}

@media (max-width: 700px) {
  header.page { flex-direction: column; align-items: flex-start; }
  .meta { grid-template-columns: repeat(2, auto); }
  nav.toc { padding: 8px 16px; }
  main { padding: 0 12px; }
  .card { padding: 16px; }
}