:root {
  color-scheme: light dark;
  --bg: #faf8f4;
  --bg2: #ffffff;
  --fg: #1f1d1a;
  --muted: #6b665e;
  --line: #e4dfd6;
  --accent: #b5442f;
  --accent-soft: #f6e3dd;
  --code-bg: #f1ede6;
  --ok: #2f6f4e;
  --warn: #8a5a00;
  --warn-bg: #fff4d6;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
:root[data-theme="dark"] {
  --bg: #17161a;
  --bg2: #201f24;
  --fg: #ece8e1;
  --muted: #a39d93;
  --line: #34323a;
  --accent: #e2735c;
  --accent-soft: #3a2621;
  --code-bg: #26252b;
  --ok: #7fc59d;
  --warn: #f0c060;
  --warn-bg: #3a3020;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17161a;
    --bg2: #201f24;
    --fg: #ece8e1;
    --muted: #a39d93;
    --line: #34323a;
    --accent: #e2735c;
    --accent-soft: #3a2621;
    --code-bg: #26252b;
    --ok: #7fc59d;
    --warn: #f0c060;
    --warn-bg: #3a3020;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; }
code, pre, kbd { font-family: var(--mono); font-size: 0.92em; }
code { background: var(--code-bg); padding: 0.1em 0.4em; border-radius: 4px; overflow-wrap: anywhere; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
  line-height: 1.6;
  margin: 0;
  max-width: 100%;
  white-space: pre;
}
pre code { background: none; padding: 0; }
kbd { background: var(--bg2); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 0.4em; }
h1, h2, h3 { line-height: 1.35; letter-spacing: 0.01em; }
h1 { font-size: 1.7rem; margin: 0 0 0.4em; }
h2 { font-size: 1.3rem; margin: 2.2em 0 0.6em; padding-top: 0.6em; border-top: 1px solid var(--line); }
h3 { font-size: 1.05rem; margin: 1.6em 0 0.4em; }
p, ul, ol { margin: 0.6em 0; }
li { margin: 0.25em 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.95em; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--code-bg); }
.table-wrap { overflow-x: auto; max-width: 100%; margin: 0.8em 0; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg2);
  position: sticky; top: 0; z-index: 5;
}
.site-header .inner {
  max-width: 760px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.brand { font-weight: 700; text-decoration: none; color: var(--fg); font-size: 1.02rem; min-width: 0; line-height: 1.3; }
.brand small { color: var(--muted); font-weight: 400; margin-left: 6px; font-size: 0.8em; }
.theme-btn {
  flex: 0 0 auto;
  background: var(--bg2); color: var(--fg); border: 1px solid var(--line); border-radius: 999px;
  padding: 4px 12px; font: inherit; font-size: 0.85rem; cursor: pointer; white-space: nowrap;
}
.nav { max-width: 760px; margin: 0 auto; padding: 0 12px 8px; display: flex; flex-wrap: wrap; gap: 6px 4px; }
.nav a {
  color: var(--muted); text-decoration: none; font-size: 0.85rem; padding: 3px 9px;
  border-radius: 999px; border: 1px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); border-color: var(--line); background: var(--bg); }

main { max-width: 760px; margin: 0 auto; padding: 24px 16px 56px; }
.lead { color: var(--muted); font-size: 1.02rem; margin-bottom: 1.4em; }
.card {
  background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; margin: 14px 0;
}
.card h3 { margin-top: 0; }
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li {
  counter-increment: step; position: relative; padding-left: 44px; margin: 14px 0;
}
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 2px;
  width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.note { background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 10px 14px; border-radius: 6px; margin: 1em 0; }
.warn { background: var(--warn-bg); border-left: 4px solid var(--warn); padding: 10px 14px; border-radius: 6px; margin: 1em 0; }
.src { font-size: 0.86rem; color: var(--muted); margin: 0.8em 0 0; }
.src::before { content: "出典: "; font-weight: 700; }
.src a { color: var(--muted); }
.tag {
  display: inline-block; font-size: 0.75rem; padding: 1px 8px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); margin-right: 6px; vertical-align: middle;
}
.tag-fact { color: var(--ok); border-color: var(--ok); }
.tag-opinion { color: var(--accent); border-color: var(--accent); }
.tag-unverified { color: var(--warn); border-color: var(--warn); }

.copybox { position: relative; margin: 0.8em 0 1.2em; max-width: 100%; }
.copybox .path {
  font-family: var(--mono); font-size: 0.8rem; color: var(--muted);
  background: var(--bg2); border: 1px solid var(--line); border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0; padding: 6px 12px;
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
.copybox pre { border-radius: 0 0 var(--radius) var(--radius); }
.copy-btn {
  background: var(--accent); color: #fff; border: 0; border-radius: 6px;
  padding: 4px 10px; font: inherit; font-size: 0.8rem; cursor: pointer; white-space: nowrap;
}
.copy-btn[data-done="1"] { background: var(--ok); }

.news-item { border-bottom: 1px solid var(--line); padding: 14px 0; }
.news-item:last-child { border-bottom: 0; }
.news-item h3 { margin: 0 0 4px; font-size: 1.02rem; }
.news-item .meta { font-size: 0.82rem; color: var(--muted); }
.news-item .sum { margin: 6px 0; white-space: pre-line; }
.news-day { margin-top: 2em; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; }
.site-footer .inner { max-width: 760px; margin: 0 auto; padding: 18px 16px 40px; }
.site-footer a { color: var(--muted); }

@media (max-width: 420px) {
  body { font-size: 15px; }
  .brand small { display: block; margin-left: 0; }
  h1 { font-size: 1.45rem; }
  main { padding: 18px 14px 48px; }
  .card { padding: 14px; }
}