:root {
  --bg: #f6f8fa; --card: #ffffff; --text: #1f2328; --muted: #57606a; --line: #d0d7de; --accent: #1f6feb;
  --ok: #1a7f37; --ok-bg: #dafbe1; --check: #9a6700; --check-bg: #fff8c5; --ng: #cf222e; --ng-bg: #ffebe9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --card: #161b22; --text: #e6edf3; --muted: #9198a1; --line: #30363d; --accent: #4493f8;
    --ok: #3fb950; --ok-bg: #12261e; --check: #d29922; --check-bg: #272115; --ng: #f85149; --ng-bg: #301a1f;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6;
  font-family: "Hiragino Sans", "Yu Gothic UI", "Meiryo", system-ui, sans-serif; font-size: 17px; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 16px; }
h1 { font-size: 1.6rem; margin: 0; }
.lead, .hint, footer { color: var(--muted); }
.lead { margin: 4px 0 8px; }
.hint { font-size: .9rem; }
footer { font-size: .8rem; padding-bottom: 32px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 16px 0; }
.step h2 { font-size: 1.2rem; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.num { display: inline-flex; width: 1.8em; height: 1.8em; border-radius: 50%; background: var(--accent); color: #fff;
  align-items: center; justify-content: center; font-size: .9em; }
button { font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 10px;
  padding: 10px 16px; min-height: 48px; cursor: pointer; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: bold; }
button.danger { color: var(--ng); }
.mic { width: 100%; min-height: 88px; font-size: 1.3rem; font-weight: bold; display: flex; align-items: center;
  justify-content: center; gap: 12px; border: 2px solid var(--accent); color: var(--accent); }
.mic-icon { font-size: 2rem; }
.mic[aria-pressed="true"] { background: var(--ng-bg); border-color: var(--ng); color: var(--ng); }
textarea { width: 100%; font: inherit; padding: 10px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg); color: var(--text); margin-top: 8px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.row button { flex: 1 1 160px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.cards { list-style: none; padding: 0; margin: 12px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.cards li { border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; }
.cards .k { display: block; font-size: .8rem; color: var(--muted); }
.cards .v { font-weight: bold; }
.cards li.spoken { border-color: var(--accent); }
.cards li.default .v { font-weight: normal; }
.notes { list-style: none; padding: 0; margin: 8px 0 0; }
.notes li { background: var(--check-bg); color: var(--check); border-radius: 8px; padding: 6px 10px; margin-top: 4px; font-size: .9rem; }
.notes li::before { content: "⚠ "; }
.links { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.links a { display: block; padding: 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--accent);
  text-decoration: none; font-weight: bold; min-height: 48px; }
.links a small { display: block; color: var(--muted); font-weight: normal; }
.msg { font-size: .95rem; min-height: 1.2em; }
.summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.summary span { padding: 6px 12px; border-radius: 8px; font-weight: bold; }
.ok { background: var(--ok-bg); color: var(--ok); }
.check { background: var(--check-bg); color: var(--check); }
.ng { background: var(--ng-bg); color: var(--ng); }
.prop { border: 1px solid var(--line); border-radius: 12px; margin: 8px 0; overflow: hidden; }
.prop-head { display: flex; align-items: center; gap: 12px; padding: 10px 12px; }
.prop-mark { font-size: 2rem; font-weight: bold; width: 1.4em; text-align: center; border-radius: 8px; }
.prop-title { flex: 1; }
.prop-title b { display: block; }
.prop-title small { color: var(--muted); }
.prop-head button { min-height: 40px; padding: 6px 10px; font-size: .85rem; }
.prop table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.prop td { border-top: 1px solid var(--line); padding: 6px 12px; vertical-align: top; }
.prop td:first-child { white-space: nowrap; width: 5.5em; color: var(--muted); }
.prop td.m { font-weight: bold; width: 2em; text-align: center; }
.prop .problems { color: var(--ng); font-size: .85rem; padding: 6px 12px; }
#map { height: 360px; border-radius: 12px; border: 1px solid var(--line); margin-top: 12px; }
#map:empty { display: none; }
@media print { #step1, #step2, #step3, .row, #map { display: none; } }