:root {
  --bg: #eceef0; --card: #ffffff; --card-2: #f8fafc;
  --border: #e9edf2; --border-strong: #dde3ea;
  --base: #1e293b; --base-soft: #475569; --muted: #8a97a8; --faint: #b7c1cf;
  --primary: #0d9488; --primary-600: #0b8a77; --primary-tint: #e6f5f3;
  --success: #16a34a; --success-soft: #dcfce7;
  --warn: #ea7a18; --warn-soft: #fff1e2;
  --info: #2563eb; --info-soft: #dbeafe;
  --violet: #7c3aed; --violet-soft: #ede9fe;
  --radius: 16px; --radius-sm: 11px; --pill: 999px;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, monospace;
  --sans: Urbanist, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--base); font-family: var(--sans); font-size: 14px; line-height: 1.5; }
a { color: var(--primary-600); text-decoration: none; }
code { font-family: var(--mono); font-size: 12px; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 14px 30px; }
.topbar-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; max-width: 1320px; margin: 0 auto; }
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand h1 { font-size: 18px; font-weight: 800; margin: 0; letter-spacing: -.01em; }
.brand .ver { font-size: 12px; color: var(--muted); font-weight: 600; }
.controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.search { position: relative; }
.search input { width: 260px; max-width: 60vw; padding: 9px 14px; border: 1px solid var(--border-strong); border-radius: var(--pill);
  background: var(--card); font: inherit; font-size: 13px; color: var(--base); outline: none; }
.search input:focus { border-color: var(--primary); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { padding: 6px 12px; border-radius: var(--pill); border: 1px solid var(--border-strong); background: var(--card);
  font-size: 12.5px; font-weight: 700; color: var(--base-soft); cursor: pointer; white-space: nowrap; transition: all .14s; }
.chip:hover { border-color: var(--primary); color: var(--primary-600); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.chip .n { opacity: .7; margin-left: 5px; }

/* reconciliation banner */
.banner { max-width: 1320px; margin: 14px auto 0; padding: 0 30px; }
.banner-inner { display: flex; gap: 10px; align-items: flex-start; background: var(--info-soft); border: 1px solid color-mix(in srgb, var(--info) 25%, var(--border));
  color: #1e3a8a; border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13px; font-weight: 600; }

/* layout */
.layout { display: grid; grid-template-columns: 230px 1fr; gap: 30px; max-width: 1320px; margin: 0 auto; padding: 24px 30px 80px; }
@media (max-width: 920px) { .layout { grid-template-columns: 1fr; } .sidebar { display: none; } }
.sidebar { position: sticky; top: 86px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; }
.sidebar a { display: block; padding: 7px 12px; border-radius: 9px; color: var(--base-soft); font-weight: 700; font-size: 13px; }
.sidebar a:hover { background: var(--card-2); color: var(--primary-600); }
.sidebar .sb-h { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 12px 12px 6px; }

/* content */
.content { min-width: 0; }
.section { margin-bottom: 36px; scroll-margin-top: 100px; }
.section-h { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 6px; width: 100%;
  background: none; border: 0; padding: 0; cursor: pointer; color: inherit; font: inherit; text-align: left; }
.section-h h2 { font-size: 22px; font-weight: 800; margin: 0; letter-spacing: -.01em; }
.section-h .chev { color: var(--muted); font-size: 13px; transform: rotate(90deg); transition: transform .15s; display: inline-block; }
.section.collapsed .section-h .chev, .conv.collapsed .section-h .chev { transform: rotate(0deg); }
.section.collapsed .section-body, .conv.collapsed .section-body { display: none; }
.conv .section-h { margin-bottom: 12px; }
.conv .section-h h2 { font-size: 18px; }
.section-blurb { color: var(--base-soft); font-size: 13.5px; margin: 0 0 16px; max-width: 70ch; }
.group { margin-bottom: 20px; }
.group-h { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--primary-600); margin: 0 0 10px; }

.row { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 10px; }
.row-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.row-name { font-weight: 800; font-size: 14.5px; }
.type { font-size: 11px; font-weight: 700; color: var(--muted); background: var(--card-2); border: 1px solid var(--border); padding: 2px 8px; border-radius: var(--pill); }
.spacer { flex: 1; }
.def { color: var(--base-soft); font-size: 13px; margin: 8px 0 0; }
.meta-grid { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 10px; }
@media (min-width: 720px) { .meta-grid { grid-template-columns: 1fr 1fr; } .meta-grid .full { grid-column: 1 / -1; } }
.meta-grid label { display: block; font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: 3px; }
.meta-grid code, .meta-grid span { display: block; font-size: 12.5px; color: var(--base); word-break: break-word; }
.meta-grid code { background: var(--card-2); border: 1px solid var(--border); border-radius: 8px; padding: 6px 9px; }

/* status badge */
.status { font-size: 11px; font-weight: 800; padding: 3px 10px; border-radius: var(--pill); white-space: nowrap; }
.status-built { color: var(--success); background: var(--success-soft); }
.status-extend { color: var(--warn); background: var(--warn-soft); }
.status-planned { color: var(--info); background: var(--info-soft); }

/* conventions */
.conv { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; margin-bottom: 32px; }
.conv h2 { font-size: 18px; margin: 0 0 12px; font-weight: 800; }
.conv-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 720px) { .conv-grid { grid-template-columns: 1fr 1fr; } }
.conv-item label { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--primary-600); }
.conv-item p { margin: 3px 0 0; font-size: 13px; color: var(--base-soft); }
.types { margin-top: 14px; display: grid; grid-template-columns: 1fr; gap: 6px; }
.types div { font-size: 12.5px; color: var(--base-soft); } .types b { color: var(--base); }

.empty { color: var(--muted); font-weight: 600; padding: 40px; text-align: center; }
footer { max-width: 1320px; margin: 0 auto; padding: 0 30px 50px; color: var(--muted); font-size: 12px; }