/* edge-rule fixture 共通スタイル。
   見た目を整えるだけで、補正ルールの判定には一切影響しない。
   class 名は landmark-rules / aria-live-rules の id/class パターン
   (main|content|header|nav|footer|error|status ...) に当たらない語を選ぶこと。 */

:root {
  --ink: #1b1f24;
  --muted: #5c6570;
  --line: #d7dce2;
  --accent: #123a6b;
  --bad: #b3261e;
  --good: #1b6b3a;
  --paper: #ffffff;
  --bg: #f5f7fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 0 4rem;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}

.siteforce-skip-link {
  position: absolute;
  left: -9999px;
}
.siteforce-skip-link:focus {
  position: fixed;
  left: 8px;
  top: 8px;
  z-index: 999;
  padding: 8px 12px;
  background: #000;
  color: #fff;
}

main, .sheet {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem;
  background: var(--paper);
}

h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .5rem; padding-bottom: .25rem; border-bottom: 1px solid var(--line); }
h3 { font-size: 1rem; margin: 1.25rem 0 .35rem; }

.lead { color: var(--muted); margin: 0 0 1.5rem; }

.rule-id {
  display: inline-block;
  padding: .1rem .5rem;
  border-radius: 3px;
  background: var(--accent);
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .85rem;
}

.case {
  margin: .75rem 0;
  padding: .75rem 1rem;
  border-left: 4px solid var(--line);
  background: #fafbfc;
}
.case.fires { border-left-color: var(--bad); }
.case.quiet { border-left-color: var(--good); }

.case > .why {
  margin: 0 0 .5rem;
  font-size: .85rem;
  color: var(--muted);
}

.row { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

img { max-width: 100%; height: auto; }

table { border-collapse: collapse; margin: .5rem 0; }
th, td { border: 1px solid var(--line); padding: .35rem .75rem; text-align: left; }

iframe { width: 100%; max-width: 22rem; height: 5rem; border: 1px solid var(--line); }

input, select, textarea {
  padding: .35rem .5rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  font: inherit;
}
button {
  padding: .35rem .75rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  font: inherit;
  cursor: pointer;
}

ul.rule-index { columns: 2; margin: 0; padding-left: 1.25rem; }
ul.rule-index li { break-inside: avoid; }

code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }