:root {
  color-scheme: light;
  --paper: #f6f5ef;
  --surface: #fffefa;
  --ink: #161f1c;
  --muted: #4f6058;
  --line: #d9ddd2;
  --green: #174a39;
  --green-soft: #e7efe6;
  --red: #912f28;
  --red-soft: #f9e8e2;
  --amber: #754a15;
  --amber-soft: #f6ebd5;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
a { color: var(--green); text-underline-offset: .22em; }
button, input { font: inherit; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 3px; }
h1, h2, h3, p { margin: 0; }
.wrap { width: min(100% - 3rem, 74rem); margin-inline: auto; }
.mono { font: 500 .76rem/1.4 var(--mono); color: var(--muted); }
.skip-link { position: absolute; top: .5rem; left: .5rem; padding: .7rem; background: var(--surface); transform: translateY(-150%); z-index: 2; }
.skip-link:focus { transform: translateY(0); }
.topbar { border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: 4.25rem; }
.brand { display: inline-flex; gap: .5rem; align-items: center; color: var(--ink); font-weight: 720; text-decoration: none; }
.brand-mark { font: 700 1.22rem/1 var(--mono); color: var(--green); }
nav { display: flex; flex-wrap: wrap; align-items: center; gap: clamp(.65rem, 2vw, 1.75rem); }
nav a { font-size: .9rem; text-decoration: none; }
nav a:hover, .brand:hover { text-decoration: underline; }
.intro { display: grid; grid-template-columns: minmax(0, 2.2fr) minmax(15rem, 1fr); align-items: end; gap: 2rem; padding: clamp(2.8rem, 6vw, 5rem) 0 clamp(2.5rem, 5vw, 4.15rem); }
.intro h1 { font-size: clamp(2.9rem, 6.3vw, 5.75rem); line-height: .98; letter-spacing: -.068em; max-width: 12ch; }
.intro p { color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.2rem); line-height: 1.55; max-width: 42ch; margin-top: 1.15rem; }
.replay-note { border-left: 3px solid var(--green); padding: .15rem 0 .15rem 1.15rem; }
.replay-note p { font-size: .95rem; margin-top: .4rem; max-width: 32ch; }
.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .4rem 1rem; padding-bottom: .85rem; }
.section-head h2 { font-size: clamp(1.45rem, 3vw, 2.25rem); letter-spacing: -.042em; }
.workspace { display: grid; grid-template-columns: 15.3rem minmax(0, 1fr); border: 1px solid var(--line); border-radius: .8rem; overflow: clip; background: var(--surface); }
.scenario-panel { padding: 1.1rem .8rem; border-right: 1px solid var(--line); background: #efefe7; }
.scenario-panel h3 { margin: .3rem .7rem .85rem; font-size: .92rem; }
#scenario-options { display: grid; gap: .15rem; }
.scenario-button { text-align: left; background: transparent; color: var(--ink); border: 1px solid transparent; border-radius: .4rem; padding: .58rem .65rem; min-height: 2.65rem; cursor: pointer; font-size: .9rem; }
.scenario-button:hover { background: #e6e9df; }
.scenario-button[aria-pressed="true"] { background: var(--green-soft); border-color: #a8c2ad; color: var(--green); font-weight: 700; }
.scenario-button:focus-visible { outline-offset: 0; }
.result { padding: clamp(1rem, 2.6vw, 1.95rem); min-width: 0; }
.result-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: .9rem; }
.result-header h3 { font-size: clamp(1.45rem, 3vw, 2.05rem); letter-spacing: -.04em; }
.result-header p, .explanation, .fault-switch p, .advisory, .bench-context { color: var(--muted); line-height: 1.45; }
.result-header p { margin-top: .45rem; max-width: 52ch; }
.verdict { min-width: 8.4rem; padding: .65rem .85rem; border-radius: .45rem; color: var(--green); background: var(--green-soft); }
.verdict span { display: block; font: 500 .68rem/1.4 var(--mono); }
.verdict strong { font: 750 1.55rem/1.12 var(--mono); }
.verdict[data-state="review"] { color: var(--amber); background: var(--amber-soft); }
.verdict[data-state="block"] { color: var(--red); background: var(--red-soft); }
.explanation { margin: 1.15rem 0 .9rem; font-size: .85rem; }
#reasons { display: flex; flex-wrap: wrap; gap: .25rem 1.35rem; margin: .3rem 0 0; padding-left: 1.2rem; }
.check-list, .boundary-list, .incident-list { list-style: none; padding: 0; margin: 0; }
.check { display: grid; grid-template-columns: minmax(7.5rem, .85fr) minmax(0, 2.7fr) auto; align-items: center; gap: .65rem 1rem; padding: .7rem 0; border-top: 1px solid var(--line); font-size: .85rem; }
.check-name strong, .check-name span { display: block; }
.check-name span { color: var(--muted); font-size: .75rem; margin-top: .14rem; }
.check-detail { line-height: 1.35; overflow-wrap: anywhere; color: var(--muted); }
.status { justify-self: end; min-width: 3.75rem; text-align: center; padding: .22rem .38rem; font: 650 .7rem/1.2 var(--mono); text-transform: uppercase; border-radius: .22rem; }
.status-pass { color: var(--green); background: var(--green-soft); }
.status-review { color: var(--amber); background: var(--amber-soft); }
.status-fail, .status-error, .status-missing { color: var(--red); background: var(--red-soft); }
.fault-switch { border-top: 1px solid var(--line); margin-top: .25rem; padding-top: .85rem; font-size: .9rem; }
.fault-switch label { display: inline-flex; align-items: center; gap: .52rem; min-height: 2rem; cursor: pointer; font-weight: 650; }
.fault-switch input { width: 1.1rem; height: 1.1rem; margin: 0; accent-color: var(--green); flex: none; }
.fault-switch p { font-size: .8rem; margin: .05rem 0 0 1.6rem; }
.advisory { margin-top: .9rem; border-left: 3px solid var(--amber); background: var(--amber-soft); padding: .6rem .75rem; font-size: .86rem; }
.notice { margin: 0 0 1rem; }
.benchmark { margin-block: clamp(2.8rem, 5vw, 4.5rem); }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding-block: .65rem; border-block: 1px solid var(--line); }
.metric { padding: .9rem 1rem; }
.metric + .metric { border-left: 1px solid var(--line); }
.metric strong { display: block; color: var(--green); font: 700 clamp(1.65rem, 4vw, 2.45rem)/1.1 var(--mono); }
.metric span { display: block; color: var(--muted); margin-top: .4rem; font-size: .85rem; line-height: 1.35; }
.bench-context { margin: .85rem 0 1.1rem; }
.coverage-table { width: 100%; border-collapse: collapse; text-align: left; font-size: .88rem; }
.coverage-table th, .coverage-table td { border-block-end: 1px solid var(--line); padding: .7rem .4rem; }
.coverage-table thead th { color: var(--muted); font-weight: 650; }
.coverage-table tbody th { width: 50%; font-weight: 600; }
.coverage-table td .status { display: inline-block; }
details { border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { padding: .85rem 0; cursor: pointer; font-weight: 660; }
.boundary-list li { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .2rem .8rem; }
.boundary-list li, .incident-list li { padding: .58rem 0; border-top: 1px solid var(--line); font-size: .87rem; line-height: 1.4; }
.boundary-list span, .incident-list p { color: var(--muted); }
.footer { display: flex; justify-content: space-between; gap: .8rem; border-top: 1px solid var(--line); padding: 1.15rem 0 2rem; font-size: .88rem; }
@media (max-width: 760px) {
  .wrap { width: calc(100% - 2rem); }
  .intro { grid-template-columns: 1fr; gap: 1.3rem; }
  .intro h1 { max-width: 14ch; }
  .workspace { grid-template-columns: 1fr; }
  .scenario-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  #scenario-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 470px) {
  .topbar-inner { flex-wrap: wrap; min-height: auto; padding-block: .8rem; gap: .55rem; }
  .topbar nav { gap: 1rem; }
  .result-header { grid-template-columns: 1fr; }
  .verdict { min-width: 0; justify-self: start; }
  .check { grid-template-columns: minmax(0, 1fr) auto; gap: .25rem .65rem; }
  .check-detail { grid-column: 1 / -1; grid-row: 2; }
  .metric { padding: .55rem .45rem; }
  .coverage-table th, .coverage-table td { padding: .6rem .25rem; }
}