:root {
  --color-main: #9a6aad;
  --color-main-dark: #69407a;
  --color-accent: #d99a80;
  --color-bg: #f8f5fa;
  --color-surface: #ffffff;
  --color-soft: #f3eaf7;
  --color-border: #e3d5e9;
  --color-text: #2d2d35;
  --color-muted: #6b6070;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-text);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.85;
  background: var(--color-bg);
}
a { color: var(--color-main-dark); }
.site-header, .site-footer {
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: 16px 20px;
  background: var(--color-surface);
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--color-border);
}
.brand {
  color: var(--color-main-dark);
  font-size: 22px;
  font-weight: 900;
  text-decoration: none;
}
.global-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}
.global-nav a, .site-footer a { text-decoration: none; }
main {
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: 22px 20px 42px;
  background: var(--color-surface);
}
.hero {
  padding: 34px 24px;
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-top: 5px solid var(--color-main);
}
.label {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 10px;
  color: var(--color-main-dark);
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 700;
}
h1 {
  margin: 0 0 12px;
  color: var(--color-main-dark);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.35;
  letter-spacing: 0;
}
h2 {
  margin: 0 0 12px;
  color: var(--color-main-dark);
  font-size: 24px;
  line-height: 1.45;
  letter-spacing: 0;
}
h3 {
  margin: 22px 0 8px;
  color: #40344a;
  font-size: 19px;
  line-height: 1.5;
}
.lead {
  max-width: 760px;
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}
.meta {
  margin: 10px 0 0;
  color: var(--color-muted);
  font-size: 14px;
}
section, .article-block {
  margin-top: 24px;
}
.summary-box, .conclusion-box, .intro-answer, .cta-box, .note-box {
  padding: 18px;
  border: 1px solid var(--color-border);
  background: #fffafe;
}
.conclusion-box, .intro-answer {
  border-left: 5px solid var(--color-main);
}
.category-grid, .article-list, .related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.card, .article-card {
  display: block;
  padding: 16px;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: #fff;
  text-decoration: none;
}
.card strong, .article-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-main-dark);
  font-size: 18px;
}
.card span, .article-card span {
  display: block;
  color: var(--color-muted);
  font-size: 14px;
}
.button {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 16px;
  color: #fff;
  background: var(--color-main-dark);
  font-weight: 700;
  text-decoration: none;
}
.breadcrumb {
  margin: 4px 0 18px;
  color: var(--color-muted);
  font-size: 14px;
}
.toc {
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  background: var(--color-soft);
}
.toc ol, .summary-box ul, .checklist ul { margin: 0; padding-left: 22px; }
.checklist li { margin-bottom: 8px; }
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 15px;
}
th, td {
  padding: 10px;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
th { background: var(--color-soft); color: var(--color-main-dark); }
.faq h3 {
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
}
.home-rich {
  background:
    linear-gradient(180deg, #f3eaf7 0, #f8f5fa 340px, #ffffff 340px);
}
.home-rich .site-header {
  margin-top: 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px 8px 0 0;
}
.home-rich main {
  padding: 28px clamp(18px, 4vw, 44px) 54px;
  border-right: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}
.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 18px 30px;
  align-items: start;
  padding: 28px;
  background: #fffafe;
  border: 1px solid #dcc3e8;
  border-left: 8px solid var(--color-main);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(105, 64, 122, 0.08);
}
.home-hero .label {
  grid-column: 1 / -1;
  width: fit-content;
  margin-bottom: 0;
}
.home-hero h1 {
  grid-column: 1 / -1;
  max-width: 980px;
  margin-bottom: 6px;
  font-size: clamp(32px, 5vw, 50px);
}
.home-hero .lead {
  max-width: 680px;
}
.home-hero-text {
  grid-column: 1;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.button-secondary {
  color: var(--color-main-dark);
  background: #fff;
  border: 1px solid var(--color-main-dark);
}
.hero-visual {
  grid-column: 2;
  align-self: end;
  margin: 0;
  padding-top: 18px;
}
.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(45, 45, 53, 0.1);
}
.home-summary,
.reading-flow,
.decision-map,
.check-axis,
.cluster-links,
.home-note {
  margin-top: 34px;
}
.home-summary,
.cluster-links,
.home-note {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.home-summary h2,
.reading-flow h2,
.decision-map h2,
.check-axis h2,
.cluster-links h2,
.home-note h2 {
  position: relative;
  padding: 0 0 12px 18px;
  border-bottom: 1px solid var(--color-border);
}
.home-summary h2::before,
.reading-flow h2::before,
.decision-map h2::before,
.check-axis h2::before,
.cluster-links h2::before,
.home-note h2::before {
  position: absolute;
  top: 0.28em;
  left: 0;
  width: 6px;
  height: 1.2em;
  background: var(--color-accent);
  border-radius: 999px;
  content: "";
}
.summary-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.summary-columns div {
  padding: 16px;
  background: #fbf8fc;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.summary-columns strong {
  display: block;
  color: var(--color-main-dark);
  font-size: 17px;
}
.summary-columns span {
  display: block;
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 14px;
}
.reading-flow ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}
.reading-flow li {
  counter-increment: flow;
}
.reading-flow a {
  position: relative;
  display: block;
  min-height: 100%;
  padding: 46px 16px 16px;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-decoration: none;
}
.reading-flow a::before {
  position: absolute;
  top: 14px;
  left: 16px;
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  color: #fff;
  background: var(--color-main-dark);
  border-radius: 999px;
  content: counter(flow);
  font-size: 13px;
  font-weight: 800;
}
.reading-flow strong,
.reading-flow span {
  display: block;
}
.reading-flow strong {
  color: var(--color-main-dark);
  font-size: 17px;
}
.reading-flow span {
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 14px;
}
.home-rich .card {
  border-radius: 8px;
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.home-rich .card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(45, 45, 53, 0.08);
}
.check-axis table {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(45, 45, 53, 0.04);
}
.check-axis th {
  color: #fff;
  background: var(--color-main-dark);
}
.cluster-links p {
  margin: 0 0 18px;
}
.cluster-links .related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.home-note ul {
  margin: 14px 0 0;
  padding-left: 22px;
}
.home-note li {
  margin-top: 6px;
}
.home-cta {
  margin-top: 34px;
  padding: 28px;
  color: #fff;
  background: var(--color-main-dark);
  border-color: var(--color-main-dark);
  border-radius: 8px;
}
.home-cta h2,
.home-cta p {
  color: #fff;
}
.home-cta .button {
  color: var(--color-main-dark);
  background: #fff;
  border-radius: 999px;
}
@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  main { padding: 16px 14px 32px; }
  .hero { padding: 26px 18px; }
  .category-grid, .article-list, .related-grid { grid-template-columns: 1fr; }
  .home-rich {
    background: #fff;
  }
  .home-rich .site-header {
    margin-top: 0;
    border-radius: 0;
  }
  .home-rich main {
    padding: 18px 14px 38px;
    border: 0;
  }
  .home-hero {
    grid-template-columns: 1fr;
    padding: 18px;
  }
  .home-hero .label,
  .home-hero h1,
  .home-hero-text,
  .hero-visual {
    grid-column: 1;
  }
  .hero-visual {
    padding-top: 4px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .button {
    width: 100%;
    text-align: center;
  }
  .summary-columns,
  .reading-flow ol,
  .cluster-links .related-grid {
    grid-template-columns: 1fr;
  }
}

/* Rich article layout for hoiku-next lower pages. */
.article-rich {
  background:
    linear-gradient(180deg, #f3eaf7 0, #f8f5fa 260px, #ffffff 260px);
}
.article-rich .site-header {
  margin-top: 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px 8px 0 0;
}
.article-rich main {
  padding: 30px clamp(18px, 4vw, 46px) 54px;
  border-right: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}
.article-rich article {
  max-width: 820px;
  margin: 0 auto;
}
.article-rich .breadcrumb {
  max-width: 820px;
  margin-right: auto;
  margin-left: auto;
}
.article-rich .label {
  color: #fff;
  background: var(--color-main-dark);
  border-color: var(--color-main-dark);
  border-radius: 999px;
}
.article-rich h1 {
  margin-bottom: 16px;
  padding-bottom: 18px;
  border-bottom: 3px solid var(--color-accent);
  font-size: clamp(32px, 5vw, 48px);
}
.article-rich .lead {
  max-width: 780px;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 6px solid var(--color-accent);
  font-size: 19px;
}
.article-rich .meta {
  margin-top: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}
.article-rich .intro-answer {
  margin-top: 30px;
  padding: 24px;
  background: #fffafe;
  border: 1px solid #dcc3e8;
  border-left: 8px solid var(--color-main);
  box-shadow: 0 12px 30px rgba(105, 64, 122, 0.08);
}
.article-rich .intro-answer h2 {
  font-size: 25px;
}
.article-rich .toc {
  margin-top: 28px;
  padding: 20px 22px;
  background: #f6f0f8;
  border: 1px solid #dbc8e4;
  border-radius: 8px;
}
.article-rich .toc ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 20px;
  margin-top: 10px;
}
.article-rich .toc a {
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.article-rich .article-block {
  margin-top: 40px;
  padding-top: 8px;
}
.article-rich .article-block h2,
.article-rich .faq h2,
.article-rich .related-links h2,
.article-rich .cta-box h2 {
  position: relative;
  padding: 0 0 12px 18px;
  border-bottom: 1px solid var(--color-border);
}
.article-rich .article-block h2::before,
.article-rich .faq h2::before,
.article-rich .related-links h2::before,
.article-rich .cta-box h2::before {
  position: absolute;
  top: 0.28em;
  left: 0;
  width: 6px;
  height: 1.2em;
  background: var(--color-accent);
  border-radius: 999px;
  content: "";
}
.article-rich .article-block p {
  margin: 14px 0 0;
}
.article-rich .checklist,
.article-rich .note-box {
  margin-top: 20px;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(45, 45, 53, 0.05);
}
.article-rich .checklist li {
  padding-left: 2px;
}
.article-rich table {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(45, 45, 53, 0.04);
}
.article-rich th {
  background: var(--color-main-dark);
  color: #fff;
}
.article-rich td {
  background: #fff;
}
.article-rich .faq {
  margin-top: 44px;
  padding: 22px;
  background: #faf7fb;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.article-rich .faq h3 {
  margin-top: 18px;
  padding: 16px 0 0;
  color: var(--color-main-dark);
}
.article-rich .related-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.article-rich .article-card {
  border-radius: 8px;
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.article-rich .article-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(45, 45, 53, 0.08);
}
.article-rich .cta-box {
  margin-top: 34px;
  padding: 26px;
  color: #fff;
  background: var(--color-main-dark);
  border-color: var(--color-main-dark);
  border-radius: 8px;
}
.article-rich .cta-box h2,
.article-rich .cta-box p {
  color: #fff;
}
.article-rich .cta-box h2 {
  border-bottom-color: rgba(255, 255, 255, 0.28);
}
.article-rich .cta-box .button {
  color: var(--color-main-dark);
  background: #fff;
  border-radius: 999px;
}
@media (max-width: 760px) {
  .article-rich {
    background: #fff;
  }
  .article-rich .site-header {
    margin-top: 0;
    border-radius: 0;
  }
  .article-rich main {
    padding: 18px 14px 38px;
    border: 0;
  }
  .article-rich .lead,
  .article-rich .intro-answer,
  .article-rich .toc,
  .article-rich .faq,
  .article-rich .cta-box {
    padding: 18px;
  }
  .article-rich .toc ol,
  .article-rich .related-grid {
    grid-template-columns: 1fr;
  }
}

.article-hero-image {
  margin: 24px 0 28px;
}

.article-hero-image img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border, #ddd);
  border-radius: 8px;
  object-fit: cover;
}