:root {
  color-scheme: light;
  --bg: #f5fbff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --surface-soft: rgba(186, 230, 253, 0.24);
  --text: #10273a;
  --muted: #4e6577;
  --border: #c9dbe8;
  --border-strong: #9ec3d9;
  --primary: #0c4a6e;
  --accent: #5496be;
  --accent-soft: #bae6fd;
  --accent-secondary: #a730b8;
  --accent-tertiary: #ce3d1a;
  --shadow: 0 24px 60px rgba(33, 83, 110, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #09131d;
    --surface: rgba(10, 23, 34, 0.86);
    --surface-strong: #0f1d2b;
    --surface-soft: rgba(34, 79, 111, 0.22);
    --text: #e9f4ff;
    --muted: #a4bfd2;
    --border: #26465e;
    --border-strong: #477595;
    --primary: #d5ecff;
    --accent: #8ec8ea;
    --accent-soft: #1f4f73;
    --accent-secondary: #dc8cf0;
    --accent-tertiary: #ff8a6d;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
  }
}

* {
  box-sizing: border-box;
}

html {
  background: linear-gradient(180deg, #f8fcff 0%, var(--bg) 100%);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  html {
    background:
      radial-gradient(circle at top left, rgba(31, 79, 115, 0.28), transparent 28%),
      linear-gradient(180deg, #07111a 0%, var(--bg) 100%);
  }
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration-color: rgba(12, 74, 110, 0.26);
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: currentColor;
}

a:focus-visible {
  outline: 3px solid rgba(167, 48, 184, 0.35);
  outline-offset: 3px;
  border-radius: 6px;
}

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  width: min(1180px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.hero {
  padding: 1.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-copy h1 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(2.4rem, 5vw, 4.3rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-secondary);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.4fr) minmax(280px, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.hero-copy {
  max-width: 55rem;
  font-size: 1.07rem;
}

.hero-copy p {
  margin: 0;
}

.hero-copy p + p {
  margin-top: 1rem;
}

.hero-stats {
  display: grid;
  gap: 0.9rem;
  margin: 0;
}

.hero-stats div {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.hero-stats dt {
  margin: 0 0 0.2rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.hero-stats dd {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.5rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.page-nav__inner {
  position: sticky;
  top: 1.5rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.page-nav__title {
  margin: 0 0 0.8rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
}

.page-nav ol {
  margin: 0;
  padding-left: 1.1rem;
}

.page-nav li + li {
  margin-top: 0.4rem;
}

.page-nav a {
  text-decoration: none;
  color: var(--muted);
}

.page-nav a:hover {
  color: var(--primary);
}

.page-nav__note {
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.sections {
  display: grid;
  gap: 1.35rem;
}

.section-panel {
  padding: 1.35rem;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.section-heading h2 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  line-height: 1.08;
}

.section-index {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.86rem;
  color: var(--accent-secondary);
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.95rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry-card {
  padding: 1rem 1.05rem;
  background: linear-gradient(180deg, var(--surface-soft) 0%, rgba(255, 255, 255, 0.96) 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
}

@media (prefers-color-scheme: dark) {
  .entry-card {
    background: linear-gradient(180deg, rgba(23, 47, 66, 0.92) 0%, rgba(12, 25, 38, 0.96) 100%);
  }
}

.entry-link {
  display: inline-block;
  font-weight: 600;
  text-decoration: none;
  color: var(--primary);
}

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

.entry-link--package {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.94rem;
}

.entry-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0.65rem 0 0;
  padding: 0;
}

.entry-languages li {
  padding: 0.16rem 0.52rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--muted);
  font-size: 0.8rem;
}

.entry-description {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.site-footer {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 960px) {
  .hero-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .page-nav__inner {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(100vw - 1rem, 100%);
    padding-top: 1rem;
  }

  .brand {
    align-items: flex-start;
  }

  .brand img {
    width: 56px;
    height: 56px;
  }

  .section-panel,
  .page-nav__inner,
  .hero-stats div {
    border-radius: 16px;
  }

  .entry-list {
    grid-template-columns: 1fr;
  }
}