:root {
  --ink: #18211d;
  --muted: #65706a;
  --paper: #f5f6f4;
  --surface: #ffffff;
  --line: #d8ddd9;
  --green: #157a52;
  --green-soft: #e9f3ee;
  --planned: #315e9a;
  --alert: #b42318;
  --size-record: 12px;
  --size-note: 13px;
  --size-body: 16px;
  --size-heading: 20px;
  --size-display: 32px;
}

* { box-sizing: border-box; }
html { color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; font-size: var(--size-body); }
body { margin: 0; min-width: 320px; }
a { color: inherit; }
.skip { position: fixed; left: 12px; top: -80px; z-index: 10; padding: 10px 14px; background: var(--surface); border: 1px solid var(--green); }
.skip:focus { top: 12px; }
.shell { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 28px 20px; border-right: 1px solid var(--line); background: var(--surface); }
.brand { display: flex; align-items: baseline; gap: 8px; margin-bottom: 28px; text-decoration: none; }
.brand span { font-size: var(--size-note); font-weight: 600; letter-spacing: .12em; }
.brand strong { color: var(--green); font-size: var(--size-heading); }
.nav-group { margin: 2px 0; }
.nav-group > a, .subnav a { display: block; padding: 9px 12px; border-left: 3px solid transparent; text-decoration: none; font-weight: 600; }
.nav-group > a[aria-current="page"], .subnav a[aria-current="page"] { color: var(--green); border-left-color: var(--green); background: var(--green-soft); }
.nav-group.is-current-section > a { color: var(--green); }
.subnav { margin: 2px 0 8px 14px; }
.subnav a { color: var(--muted); font-size: var(--size-note); font-weight: 400; }
.nav-group.is-utility { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.read-only { position: absolute; left: 20px; right: 20px; bottom: 20px; margin: 0; color: var(--muted); font-size: var(--size-record); line-height: 1.6; }
.main { width: 100%; max-width: 1240px; padding: 42px clamp(24px, 5vw, 72px) 80px; }
.page-head { max-width: 720px; margin-bottom: 36px; }
.eyebrow { margin: 0 0 8px; color: var(--green); font-size: var(--size-record); font-weight: 700; letter-spacing: .12em; }
h1 { margin: 0; font-size: var(--size-display); line-height: 1.25; }
.question { margin: 12px 0 0; font-size: var(--size-heading); line-height: 1.6; }
.owner-line { margin: 10px 0 0; color: var(--muted); font-size: var(--size-note); }
.content-block { margin: 0 0 48px; padding-top: 4px; border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(0, 640px); gap: 8px; padding: 22px 0 16px; }
.section-heading h2 { margin: 0; font-size: var(--size-heading); }
.section-heading p { margin: 0; color: var(--muted); line-height: 1.6; }
.lead { max-width: 640px; margin: 0; font-size: var(--size-heading); line-height: 1.8; }
.muted { color: var(--muted); font-size: var(--size-note); line-height: 1.6; }
details { border-top: 1px solid var(--line); }
summary { padding: 14px 0; color: var(--green); cursor: pointer; font-weight: 600; }
.detail-body { padding: 4px 0 12px; }
.stat-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 16px; }
.stat { grid-column: span 3; min-width: 0; padding: 16px 0; border-bottom: 1px solid var(--line); }
.stat strong { display: block; font-size: var(--size-display); line-height: 1; }
.stat span { display: block; margin-top: 8px; font-weight: 600; }
.stat small { display: block; margin-top: 8px; color: var(--muted); font-size: var(--size-record); }
.entry-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 12px; }
.entry-link { grid-column: span 4; display: flex; justify-content: space-between; gap: 14px; min-width: 0; padding: 18px; border: 1px solid var(--line); border-left: 4px solid var(--green); background: var(--surface); text-decoration: none; }
.entry-link span { min-width: 0; }
.entry-link strong, .entry-link small { display: block; }
.entry-link small { margin-top: 6px; color: var(--muted); font-size: var(--size-note); line-height: 1.5; }
.entry-link b { align-self: flex-end; color: var(--green); font-size: var(--size-note); white-space: nowrap; }
.entry-link.is-pending { border-left-color: var(--line); color: var(--muted); }
.future-slot, .empty-state { max-width: 640px; margin-top: 18px; padding: 20px; border: 1px dashed var(--line); background: var(--surface); }
.future-slot span, .future-slot strong { display: block; }
.future-slot span { color: var(--muted); font-size: var(--size-record); }
.future-slot strong { margin-top: 6px; }
.list { border-top: 1px solid var(--line); }
.list-row { display: grid; grid-template-columns: minmax(180px, .8fr) minmax(0, 1.2fr); gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.list-row strong { overflow-wrap: anywhere; }
.list-row span { color: var(--muted); overflow-wrap: anywhere; }
.mapping { border-top: 1px solid var(--line); }
.mapping-row { display: grid; grid-template-columns: minmax(120px, .8fr) 24px minmax(0, 1.2fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.mapping-row span { color: var(--muted); }
.matrix-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.matrix-list article { min-width: 0; padding: 14px; border: 1px solid var(--line); background: var(--surface); }
.matrix-list article > p { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.tag { display: inline-block; padding: 4px 8px; border: 1px solid var(--line); color: var(--muted); font-size: var(--size-record); }
.tag.is-on { border-color: var(--green); color: var(--green); background: var(--green-soft); }
.bars { display: grid; gap: 14px; }
.bar-row { display: grid; grid-template-columns: minmax(120px, 180px) minmax(0, 1fr) 48px; align-items: center; gap: 12px; }
.bar-row > div { height: 12px; background: var(--paper); }
.bar-row i { display: block; height: 100%; background: var(--green); }
.bar-row b { text-align: right; }
.tree ul { margin: 0; padding-left: 20px; list-style: none; border-left: 1px solid var(--line); }
.tree > ul { padding-left: 0; border-left: 0; }
.tree li { position: relative; padding: 8px 0 8px 16px; }
.tree li::before { content: ""; position: absolute; left: 0; top: 19px; width: 10px; border-top: 1px solid var(--line); }
.tree li > span, .tree li > small { display: block; }
.tree li > small { color: var(--muted); font-size: var(--size-record); }
.empty-state > strong { color: var(--planned); }
.empty-state p { line-height: 1.8; }
.empty-state dl { margin: 20px 0 0; }
.empty-state dl div { display: grid; grid-template-columns: 160px 1fr; padding: 8px 0; border-top: 1px solid var(--line); }
.empty-state dt, .empty-state dd { margin: 0; }
.empty-state dd { color: var(--muted); }
.mobile-nav { display: none; }

@media (max-width: 900px) {
  .shell { display: block; }
  .sidebar { display: none; }
  .main { padding: 28px 18px 92px; }
  .page-head { margin-bottom: 28px; }
  .stat { grid-column: span 6; }
  .entry-link { grid-column: span 6; }
  .mobile-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 5; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); background: var(--surface); }
  .mobile-nav .nav-group { margin: 0; }
  .mobile-nav a { display: block; padding: 12px 4px; border-top: 3px solid transparent; text-align: center; text-decoration: none; font-size: var(--size-record); }
  .mobile-nav a[aria-current="page"] { color: var(--green); border-top-color: var(--green); background: var(--green-soft); }
  .mobile-nav .nav-group.is-current-section > a { color: var(--green); border-top-color: var(--green); background: var(--green-soft); }
}

@media (max-width: 620px) {
  .stat, .entry-link { grid-column: 1 / -1; }
  .matrix-list { grid-template-columns: 1fr; }
  .list-row { grid-template-columns: 1fr; gap: 4px; }
  .bar-row { grid-template-columns: 104px minmax(0, 1fr) 40px; gap: 8px; }
  .mapping-row { grid-template-columns: 1fr 18px 1fr; }
  .empty-state dl div { grid-template-columns: 1fr; gap: 4px; }
}