/* フェムコア研究所: warm ivory, muted plum accent, serif headlines; dark mode follows the device. */
:root {
  --bg: #f7f2ee; --surface: #fffaf7; --ink: #2a2226; --muted: #6f6266; --line: #e6dcd6;
  --accent: #8a4a5c; --accent-soft: #f1e4e6; --pr: #7a6a3a; --pr-bg: #f6f0df;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1719; --surface: #241e21; --ink: #efe6e8; --muted: #b3a5aa; --line: #3a3135;
    --accent: #e0a7b6; --accent-soft: #3a2a30; --pr: #e2cf96; --pr-bg: #332c1c;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.9 'Noto Sans JP', system-ui, sans-serif; overflow-wrap: anywhere; }
a { color: var(--accent); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3, .brand span { font-family: 'Noto Serif JP', serif; font-weight: 600; letter-spacing: .02em; }
.mark { width: 28px; height: 28px; border-radius: 7px; flex: none; }

.top { border-bottom: 1px solid var(--line); background: var(--surface); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 16px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-size: 18px; }
.top nav { display: flex; gap: 14px; font-size: 13px; }
.top nav a { color: var(--muted); text-decoration: none; }

.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; padding: 40px 0 16px; }
.hero-img { margin: 0; }
.hero-img img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 18px; display: block; }
@media (max-width: 640px) { .hero { grid-template-columns: 1fr; padding-top: 28px; } .hero-img { order: -1; } .hero-img img { aspect-ratio: 16 / 10; } }
.eyebrow { margin: 0; color: var(--accent); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { font-size: clamp(26px, 6.4vw, 38px); line-height: 1.5; margin: 8px 0 16px; }
.hero p { color: var(--muted); margin: 0; }
.concerns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.concerns a { position: relative; display: block; border-radius: 14px; overflow: hidden; color: #fff; text-decoration: none; aspect-ratio: 4 / 3; max-width: 100%; }
.concerns img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.concerns a:hover img { transform: scale(1.04); }
.concerns span { position: absolute; inset: auto 0 0; padding: 28px 12px 10px; font-size: 14px; line-height: 1.5; font-weight: 600; background: linear-gradient(transparent, rgba(30, 16, 22, .78)); }
@media (max-width: 640px) { .concerns { grid-template-columns: 1fr 1fr; } .concerns a:last-child:nth-child(odd) { grid-column: span 2; aspect-ratio: 8 / 3; } }
.topics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 8px 0 32px; }
.topics a { display: flex; flex-direction: column; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); text-decoration: none; color: var(--ink); }
.topics b { font-family: 'Noto Serif JP', serif; font-size: 15px; }
.topics span { color: var(--muted); font-size: 12px; }
@media (max-width: 520px) { .topics a { padding: 10px 12px; } .topics b { font-size: 13px; } }
.sec-h, .list-h { font-size: 22px; margin: 32px 0 12px; }

.cards { display: grid; gap: 12px; }
.cards { grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); }
.card { overflow: hidden; padding: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); color: var(--ink); text-decoration: none; }
.card .thumb { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
.card-b { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px 16px; }
.card { display: flex; flex-direction: column; }
.card b { font-family: 'Noto Serif JP', serif; font-size: 17px; line-height: 1.6; }
.card .cat { color: var(--accent); font-size: 12px; }
.card .dek { color: var(--muted); font-size: 14px; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card .date { color: var(--muted); font-size: 12px; }
.promise { margin-top: 32px; padding: 4px 20px 12px; border-radius: 14px; background: var(--accent-soft); }
.promise ul { padding-left: 1.2em; }

.crumbs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; font-size: 12px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.article h1 { font-size: clamp(23px, 5.6vw, 32px); line-height: 1.55; margin: 6px 0 8px; }
.kicker { margin: 20px 0 0; font-size: 13px; }
.kicker a { text-decoration: none; }
.meta { display: flex; flex-wrap: wrap; gap: 2px 14px; color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.photo { margin: 28px 0; }
.photo.lead { margin: 0 0 20px; }
.photo img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; display: block; }
.photo figcaption, .fig figcaption { margin-top: 6px; font-size: 11px; color: var(--muted); }
.points { border-radius: 14px; background: var(--accent-soft); padding: 14px 18px 10px; margin: 0 0 16px; }
.points-h { margin: 0; font-weight: 600; font-size: 14px; color: var(--accent); }
.points ul { margin: 6px 0 0; padding-left: 1.2em; font-size: 15px; }
.fig { margin: 24px 0; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.fig svg { width: 100%; height: auto; display: block; }
.fx .pv-body { fill: var(--accent-soft); }
.fx .pv-bone, .fx .pv-organ { fill: var(--surface); stroke: var(--muted); stroke-width: 1.5; }
.fx .pv-organ-fill { fill: var(--surface); }
.fx .pv-line { fill: none; stroke: var(--muted); stroke-width: 1.6; }
.fx .pv-muscle { fill: var(--accent); stroke: var(--accent); stroke-width: 1; }
.fx .pv-sheen { fill: none; stroke: var(--surface); stroke-width: 2; opacity: .45; }
.fx .pv-tube { fill: none; stroke: var(--muted); stroke-width: 6; stroke-linecap: round; }
.fx .pv-tube-in { fill: none; stroke: var(--surface); stroke-width: 2.8; stroke-linecap: round; }
.fx-lead { stroke: var(--muted); stroke-width: .9; }
.fx-dot { fill: var(--muted); }
.fx-t { fill: var(--ink); font-size: 17px; font-family: 'Noto Sans JP', sans-serif; }
.fx-acc { stroke: var(--accent); fill: var(--accent); }
text.fx-acc { stroke: none; font-weight: 600; }
.check { margin: 28px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.check-h { margin: 0 0 8px; font-weight: 600; font-family: 'Noto Serif JP', serif; }
.check label { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; border-top: 1px solid var(--line); font-size: 15px; line-height: 1.6; cursor: pointer; }
.check input { margin-top: 5px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.check-out { margin: 10px 0 6px; padding: 10px 12px; border-radius: 10px; background: var(--bg); color: var(--muted); font-size: 15px; }
.check-out.on { background: var(--accent-soft); color: var(--ink); }
.check-note { margin: 0; font-size: 12px; color: var(--muted); }
.check-note a { margin-left: 6px; }
.refs { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 10px 16px; }
.refs summary { cursor: pointer; font-size: 14px; font-weight: 600; }
.refs li { font-size: 13px; color: var(--muted); }
.inline-rel { margin: 32px 0; }
.inline-rel > p { margin: 0 0 6px; font-size: 13px; color: var(--muted); }
.inline-rel .card { flex-direction: row; }
.inline-rel .thumb { width: 38%; aspect-ratio: auto; }
.inline-rel .dek { display: none; }
.reviewed { margin-top: 24px; font-size: 12px; color: var(--muted); }
.toc { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 10px 16px; margin: 16px 0 8px; font-size: 14px; }
.toc summary { cursor: pointer; font-weight: 600; }
.toc ol { margin: 8px 0 0; padding-left: 1.4em; }
.prose h2 { font-size: 21px; line-height: 1.6; margin: 44px 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 17px; margin: 28px 0 8px; }
.prose p, .prose li { font-size: 16px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 4px 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
.prose strong { background: linear-gradient(transparent 62%, var(--accent-soft) 62%); }
.prose blockquote { margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--accent); background: var(--surface); color: var(--muted); }
.prose .ref { font-size: 11px; color: var(--muted); margin-left: 1px; }
.prose .url { word-break: break-all; font-size: 13px; }
.prose ol:last-of-type li { font-size: 13px; color: var(--muted); }
.pr-note { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); margin: 12px 0; }
.pr-label { display: inline-block; padding: 0 6px; border-radius: 4px; background: var(--pr-bg); color: var(--pr); font-size: 11px; font-weight: 600; letter-spacing: .05em; }
.table { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.7; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; min-width: 7em; }
th { background: var(--accent-soft); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.related { margin: 48px 0 16px; }
.related h2 { font-size: 19px; }

.foot { margin-top: 56px; padding: 28px 0 40px; border-top: 1px solid var(--line); background: var(--surface); font-size: 13px; color: var(--muted); }
.foot p { margin: 6px 0; }
.brand-s { display: flex; align-items: center; gap: 8px; color: var(--ink); font-family: 'Noto Serif JP', serif; font-size: 15px; }
.foot .links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.foot a { color: var(--muted); }
.small { font-size: 12px; }
@media (max-width: 600px) {
  .cards .card { flex-direction: row; }
  .cards .card .thumb { width: 34%; aspect-ratio: auto; align-self: stretch; height: auto; }
  .cards .card-b { flex: 1; min-width: 0; padding: 12px 14px; }
  .cards .card b { font-size: 15px; }
  .cards .card .dek { -webkit-line-clamp: 2; font-size: 13px; }
}