:root {
  --ink: #1A1C1A;
  --paper: #E9EAE4;
  --paper-deep: #DCDED5;
  --vermilion: #D8352A;
  --sweat: #2B6E6B;
  --muted: #6E7268;
  --rule: #C3C6BA;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  font-feature-settings: "palt";
}

.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }

/* ---- 広告表記バー ---- */
.disclosure {
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.6;
  padding: 8px 20px;
  text-align: center;
}

/* ---- ヘッダー ---- */
.masthead {
  border-bottom: 3px solid var(--ink);
  padding: 22px 0 18px;
}
.masthead a { text-decoration: none; color: inherit; }
.logo {
  font-family: "Noto Serif JP", serif;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: .04em;
  margin: 0;
}
.logo .hot { color: var(--vermilion); }
.tagline {
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 0;
  letter-spacing: .08em;
}

/* ---- ヒーロー ---- */
.hero { padding: 56px 0 44px; position: relative; overflow: hidden; }
.hero h1 {
  font-family: "Noto Serif JP", serif;
  font-weight: 900;
  font-size: clamp(34px, 9vw, 62px);
  line-height: 1.25;
  letter-spacing: .02em;
  margin: 0 0 22px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(transparent 62%, var(--vermilion) 62%, var(--vermilion) 88%, transparent 88%);
  padding: 0 .05em;
}
.hero p { font-size: 16px; margin: 0 0 12px; max-width: 34em; }

/* ---- 計量カード（署名要素） ---- */
.weighin {
  border: 2px solid var(--ink);
  background: var(--paper-deep);
  margin: 34px 0 0;
}
.weighin-head {
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .18em;
  padding: 7px 14px;
  font-weight: 700;
}
.weighin-body { padding: 18px 16px; }
.weighin-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--rule);
}
.weighin-row:last-child { border-bottom: none; }
.weighin-label { font-size: 13px; color: var(--muted); }
.weighin-val {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 15px;
  font-weight: 700;
}
.weighin-note {
  font-size: 12px;
  color: var(--muted);
  padding: 12px 16px 16px;
  line-height: 1.8;
  border-top: 1px solid var(--rule);
}

/* ---- セクション ---- */
.section { padding: 46px 0; border-top: 1px solid var(--rule); }
.eyebrow {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--vermilion);
  font-weight: 700;
  margin: 0 0 10px;
}
.section h2 {
  font-family: "Noto Serif JP", serif;
  font-weight: 900;
  font-size: 26px;
  line-height: 1.5;
  margin: 0 0 10px;
}
.section > .wrap > p { margin: 0 0 18px; }

/* ---- メニュー（記事一覧） ---- */
.menu { list-style: none; margin: 24px 0 0; padding: 0; }
.menu li { border-top: 1px solid var(--rule); }
.menu li:last-child { border-bottom: 1px solid var(--rule); }
.menu a {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 4px;
  text-decoration: none;
  color: inherit;
}
.menu a:hover .menu-title,
.menu a:focus-visible .menu-title { color: var(--vermilion); }
.step {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--paper);
  background: var(--ink);
  padding: 2px 7px;
  flex: none;
  margin-top: 4px;
}
.menu-title { font-weight: 700; font-size: 17px; line-height: 1.6; display: block; }
.menu-sub { font-size: 13px; color: var(--muted); display: block; margin-top: 3px; }

/* ---- 準備中の告知 ---- */
.pending {
  border-left: 4px solid var(--sweat);
  background: rgba(43, 110, 107, .07);
  padding: 16px 18px;
  font-size: 14px;
}
.pending strong { display: block; margin-bottom: 4px; }

/* ---- 記事本文 ---- */
article { padding: 40px 0 10px; }
article h1 {
  font-family: "Noto Serif JP", serif;
  font-weight: 900;
  font-size: clamp(25px, 6.5vw, 34px);
  line-height: 1.45;
  margin: 0 0 10px;
}
article .meta { font-size: 12px; color: var(--muted); margin: 0 0 30px; }
article h2 {
  font-family: "Noto Serif JP", serif;
  font-weight: 900;
  font-size: 20px;
  margin: 38px 0 12px;
  padding-left: 12px;
  border-left: 5px solid var(--vermilion);
  line-height: 1.6;
}
article h3 { font-size: 16px; margin: 26px 0 8px; }
article p { margin: 0 0 16px; }
article ul, article ol { margin: 0 0 18px; padding-left: 1.3em; }
article li { margin-bottom: 8px; }
article .callout {
  border: 2px solid var(--ink);
  padding: 16px 18px;
  margin: 26px 0;
  font-size: 15px;
}
article .callout p:last-child { margin-bottom: 0; }

.back { display: inline-block; margin: 30px 0 0; font-size: 14px; color: var(--sweat); }

/* ---- フッター ---- */
footer {
  border-top: 3px solid var(--ink);
  margin-top: 50px;
  padding: 26px 0 40px;
  font-size: 13px;
  color: var(--muted);
}
footer a { color: var(--muted); }
footer nav { margin-bottom: 12px; }
footer nav a { margin-right: 16px; }

a:focus-visible { outline: 3px solid var(--sweat); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}