:root {
  --bg: #f6f4ee;
  --paper: #fffef9;
  --ink: #19231d;
  --muted: #627067;
  --line: #dce1d7;
  --green: #517427;
  --green-soft: #e5f6bd;
  --purple: #7656a8;
  --purple-soft: #eee4ff;
  --orange: #b9682c;
  --orange-soft: #ffe8c8;
  --shadow: 0 18px 45px rgba(40, 53, 44, 0.09);
  --radius: 22px;
  --content: 1140px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(217, 255, 112, 0.2), transparent 26rem),
    var(--bg);
  font-family:
    "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 20;
  padding: 0.55rem 0.8rem;
  color: #fff;
  background: var(--ink);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(220, 225, 215, 0.85);
  background: rgba(246, 244, 238, 0.92);
  backdrop-filter: blur(15px);
}

.header-inner,
.main,
.footer-inner {
  width: min(calc(100% - 2rem), var(--content));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 11px;
  color: var(--ink);
  background: #d9ff70;
  font-family: Georgia, serif;
  font-size: 1rem;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.75rem;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
}

.main {
  padding: 4.4rem 0 5rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2.4rem;
  align-items: center;
  min-height: 400px;
  padding-bottom: 3.6rem;
}

.eyebrow,
.card-label,
.article-meta,
.breadcrumbs {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.article-header h1 {
  margin: 0.65rem 0 1rem;
  font-family: Georgia, "Yu Mincho", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.hero h1 {
  max-width: 780px;
  font-size: clamp(3rem, 6.5vw, 5.9rem);
}

.hero p,
.page-hero p,
.article-lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 0.65rem 1rem;
  color: #fff;
  background: var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
}

.button.secondary {
  color: var(--ink);
  background: transparent;
}

.hero-art {
  position: relative;
  min-height: 300px;
}

.hero-orbit,
.hero-dot,
.hero-panel {
  position: absolute;
}

.hero-orbit {
  inset: 1.2rem 2rem 1.2rem 0;
  border: 1px solid rgba(81, 116, 39, 0.3);
  border-radius: 50%;
}

.hero-orbit.second {
  inset: 3.5rem 0 3.5rem 2rem;
  border-color: rgba(118, 86, 168, 0.32);
}

.hero-dot {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--green-soft);
  box-shadow: var(--shadow);
}

.hero-dot.one {
  top: 1.4rem;
  right: 2rem;
}

.hero-dot.two {
  bottom: 0.7rem;
  left: 1.4rem;
  width: 52px;
  height: 52px;
  background: var(--purple-soft);
}

.hero-panel {
  top: 5rem;
  right: 3.2rem;
  width: min(260px, 74%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.3rem;
  background: rgba(255, 254, 249, 0.92);
  box-shadow: var(--shadow);
  transform: rotate(-4deg);
}

.hero-panel strong {
  display: block;
  margin-bottom: 0.5rem;
  font-family: Georgia, serif;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 1;
}

.hero-panel span {
  color: var(--muted);
  font-size: 0.82rem;
}

.section {
  padding: 3.7rem 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.section-heading h2,
.category-panel h2 {
  margin: 0.35rem 0 0;
  font-family: Georgia, "Yu Mincho", serif;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.section-heading a {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.category-panel,
.article-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 254, 249, 0.88);
  box-shadow: 0 8px 28px rgba(40, 53, 44, 0.04);
}

.category-panel {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 1.45rem;
}

.category-panel::after {
  position: absolute;
  right: -30px;
  bottom: -35px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  content: "";
  opacity: 0.74;
}

.category-panel.green::after {
  background: var(--green-soft);
}

.category-panel.purple::after {
  background: var(--purple-soft);
}

.category-panel.orange::after {
  background: var(--orange-soft);
}

.category-panel p {
  position: relative;
  z-index: 1;
  color: var(--muted);
  font-size: 0.9rem;
}

.category-panel a {
  position: absolute;
  bottom: 1.45rem;
  left: 1.45rem;
  z-index: 1;
  font-size: 0.86rem;
  font-weight: 800;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.article-card {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: 1.25rem;
}

.article-card h3 {
  margin: 0.65rem 0 0.75rem;
  font-family: Georgia, "Yu Mincho", serif;
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.45;
}

.article-card h3 a {
  text-decoration: none;
}

.article-card h3 a:hover {
  text-decoration: underline;
}

.article-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.article-card .article-meta {
  margin-top: auto;
  padding-top: 1rem;
  letter-spacing: 0.05em;
}

.page-hero {
  max-width: 820px;
  padding-bottom: 3.4rem;
}

.page-hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.3rem);
}

.article-header,
.article-body,
.article-footer {
  width: min(100%, 800px);
  margin: 0 auto;
}

.breadcrumbs {
  margin-bottom: 2.2rem;
  letter-spacing: 0.05em;
}

.breadcrumbs a {
  color: var(--muted);
}

.article-header {
  padding-bottom: 2.6rem;
}

.article-header h1 {
  font-size: clamp(2.3rem, 5vw, 4.3rem);
}

.article-header .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
  letter-spacing: 0.05em;
}

.article-lead {
  margin-top: 1.7rem;
  color: var(--ink);
  font-size: 1.05rem;
  line-height: 1.95;
}

.article-body {
  padding: 1rem 0 2.5rem;
}

.article-body section {
  padding: 1.6rem 0;
}

.article-body h2 {
  margin: 0 0 0.8rem;
  font-family: Georgia, "Yu Mincho", serif;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.article-body p {
  margin: 0.7rem 0;
}

.article-body ul {
  margin: 0.8rem 0;
  padding-left: 1.25rem;
}

.article-body li + li {
  margin-top: 0.45rem;
}

.note {
  margin: 1.25rem 0;
  border-left: 4px solid var(--green);
  border-radius: 0 12px 12px 0;
  padding: 0.9rem 1rem;
  color: #334339;
  background: #eff7df;
  font-size: 0.91rem;
}

.article-links {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0;
  list-style: none;
}

.article-links a {
  display: block;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  background: var(--paper);
  font-size: 0.92rem;
  font-weight: 800;
}

.article-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.article-footer h2 {
  margin-top: 0;
  font-family: Georgia, "Yu Mincho", serif;
  font-size: 1.45rem;
}

.source-list,
.plain-list {
  padding-left: 1.25rem;
}

.source-list li,
.plain-list li {
  margin: 0.4rem 0;
}

.source-list a {
  color: var(--green);
  font-size: 0.9rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.2rem;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.16rem 0.54rem;
  color: var(--muted);
  background: var(--paper);
  font-size: 0.75rem;
  font-weight: 800;
}

.info-panel {
  max-width: 820px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 4vw, 2.2rem);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.info-panel h2 {
  margin-top: 1.7rem;
  font-family: Georgia, "Yu Mincho", serif;
  font-size: 1.6rem;
}

.info-panel h2:first-child {
  margin-top: 0;
}

.site-footer {
  padding: 2rem 0 2.7rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1.3rem;
}

.footer-copy {
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.78rem;
}

@media (max-width: 820px) {
  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 1rem;
    left: 1rem;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 0.5rem;
    background: var(--paper);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.7rem;
  }

  .hero {
    display: block;
    min-height: 0;
  }

  .hero-art {
    display: none;
  }

  .category-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .category-panel {
    min-height: 220px;
  }

  .footer-inner {
    flex-direction: column;
  }
}