@charset "UTF-8";
:root {
  color-scheme: light;
  --hanamaru-leaf: #74b943;
  --hanamaru-green: #6baa3f;
  --hanamaru-forest: #3f6f28;
  --hanamaru-deep: #29491e;
  --hanamaru-moss: #57644f;
  --hanamaru-charcoal: #232523;
  --hanamaru-paper: #f5f7f1;
  --hanamaru-card: #ffffff;
  --hanamaru-mist: #e8f0e2;
  --hanamaru-line: #cad7c2;
  --ink: var(--hanamaru-charcoal);
  --muted: var(--hanamaru-moss);
  --paper: var(--hanamaru-paper);
  --card: var(--hanamaru-card);
  --accent: var(--hanamaru-forest);
  --line: var(--hanamaru-line);
  --shadow: 0 12px 34px rgb(35 37 35 / 9%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 100% 0, rgba(116, 185, 67, 0.12), transparent 30rem), var(--paper);
  font: 17px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--hanamaru-deep);
}

a:focus-visible {
  outline: 3px solid rgba(116, 185, 67, 0.45);
  outline-offset: 4px;
  border-radius: 4px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  max-width: 1180px;
  margin: 1rem auto 0;
  padding: 0.8rem 1.1rem;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(202, 215, 194, 0.85);
  border-radius: 18px;
  box-shadow: 0 8px 30px rgba(35, 37, 35, 0.06);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  width: 66px;
  height: 66px;
  object-fit: contain;
}

.brand span {
  font-size: 1rem;
  letter-spacing: -0.01em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.25rem;
  font-size: 0.88rem;
}

nav a {
  padding: 0.48rem 0.65rem;
  color: var(--hanamaru-moss);
  border-radius: 999px;
  text-decoration: none;
}

nav a:hover {
  color: var(--hanamaru-deep);
  background: var(--hanamaru-mist);
}

main {
  max-width: 1120px;
  margin: auto;
  padding: 3rem 1.5rem 5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 260px);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  margin-bottom: 2rem;
  padding: clamp(2rem, 6vw, 4.5rem);
  background: linear-gradient(135deg, #fff 0%, #eef5e9 65%, #dcebd1 100%);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-copy {
  max-width: 700px;
}

.hero-logo {
  width: 100%;
  max-width: 240px;
  justify-self: center;
  filter: drop-shadow(0 14px 18px rgba(35, 37, 35, 0.16));
}

.eyebrow {
  margin: 0;
  color: var(--hanamaru-forest);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 {
  color: var(--hanamaru-charcoal);
  line-height: 1.15;
}

h1 {
  margin: 0.35rem 0 1rem;
  font-size: clamp(2.5rem, 7vw, 5rem);
  letter-spacing: -0.045em;
}

h2 {
  margin: 3.5rem 0 1.25rem;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
}

h2::after {
  display: block;
  width: 3rem;
  height: 4px;
  margin-top: 0.55rem;
  background: var(--hanamaru-leaf);
  border-radius: 999px;
  content: "";
}

h3 {
  margin-top: 2.25rem;
}

.lede {
  color: var(--muted);
  font-size: 1.25rem;
}

.note, .notice {
  padding: 1rem 1.25rem;
  background: var(--hanamaru-mist);
  border: 1px solid var(--line);
  border-left: 5px solid var(--hanamaru-leaf);
  border-radius: 0 12px 12px 0;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.index-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 2rem 0 4rem;
}

.topic-card {
  position: relative;
  display: block;
  padding: 1.25rem;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 3px 12px rgba(35, 37, 35, 0.04);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  overflow: hidden;
}

.topic-card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--hanamaru-leaf);
  content: "";
  opacity: 0;
  transition: opacity 0.15s;
}

.topic-card:hover {
  color: var(--ink);
  border-color: #a9c598;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.topic-card:hover::before {
  opacity: 1;
}

.topic-card strong, .topic-card span {
  display: block;
}

.topic-card span {
  margin-top: 0.4rem;
  color: var(--muted);
}

.topic {
  max-width: 840px;
  margin: auto;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(202, 215, 194, 0.7);
  border-radius: 24px;
  box-shadow: 0 10px 32px rgba(35, 37, 35, 0.05);
}

.topic h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
}

.japanese-title {
  margin-top: -0.5rem;
  color: var(--muted);
  font-size: 1.35rem;
}

.github-link {
  display: inline-flex;
  color: var(--muted);
}

.github-link:hover {
  color: var(--accent);
}

.back {
  display: inline-block;
  margin-bottom: 2rem;
}

.topic-content {
  margin-top: 2.5rem;
}

.topic-content li {
  margin: 0.65rem 0;
}

.index-hero {
  margin-bottom: 3rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: linear-gradient(135deg, #fff, var(--hanamaru-mist));
  border: 1px solid var(--line);
  border-radius: 22px;
}

.index-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
}

.index-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.index-jump a {
  min-width: 2.2rem;
  padding: 0.35rem 0.55rem;
  color: var(--hanamaru-deep);
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
}

.index-jump a:hover {
  background: var(--hanamaru-leaf);
  border-color: var(--hanamaru-leaf);
  color: #172010;
}

.index-section {
  scroll-margin-top: 1rem;
}

.index-list {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(280px, 2fr);
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 3px 16px rgba(35, 37, 35, 0.04);
  overflow: hidden;
}

.index-list dt, .index-list dd {
  margin: 0;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--line);
}

.index-list dt {
  font-weight: 500;
}

.index-list dt rt {
  font-weight: 400;
}

.index-list dd {
  color: var(--muted);
  background: #fbfcfa;
  border-left: 1px solid var(--line);
}

.index-list dt:last-of-type, .index-list dd:last-of-type {
  border-bottom: 0;
}

.index-translation {
  color: var(--ink);
  font-size: 1.05rem;
}

.index-meta {
  font-size: 0.85rem;
}

.external-link, a[href^="https://en.wikipedia.org/wiki/"] {
  text-decoration-line: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 1px;
}

a[href^="https://en.wikipedia.org/wiki/"]:not(.external-link)::after {
  display: inline-block;
  margin-left: 0.32em;
  color: var(--hanamaru-forest);
  font-size: 0.72em;
  line-height: 1;
  vertical-align: super;
  text-decoration: none;
  content: "↗";
}

.external-icon {
  display: inline-block;
  margin-left: 0.32em;
  color: var(--hanamaru-forest);
  font-size: 0.72em;
  vertical-align: super;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

rt {
  font-size: 0.55em;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1120px;
  margin: auto;
  padding: 1.5rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
}

.page-source-link {
  align-items: center;
  gap: 0.45rem;
  flex: none;
  text-decoration: none;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    margin: 0.75rem;
  }
  nav {
    justify-content: flex-start;
  }
  main {
    padding-top: 1rem;
  }
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .hero-logo {
    grid-row: 1;
    max-width: 170px;
  }
}
@media (max-width: 650px) {
  .brand img {
    width: 54px;
    height: 54px;
  }
  .index-list {
    display: block;
  }
  .index-list dd {
    background: #fbfcfa;
    border-left: 0;
  }
  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

/*# sourceMappingURL=style.css.map */