:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --panel-soft: #f7faf5;
  --panel-deep: #eef4ec;
  --ink: #1e2b22;
  --muted: #5a675d;
  --line: #d9e7dc;
  --line-strong: #c7dacb;
  --accent: #5a7350;
  --accent-deep: #41543a;
  --accent-muted: #73806e;
  --accent-soft: #edf4ec;
  --shadow: 0 14px 36px rgba(34, 73, 48, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: "Charter", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
.brand {
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

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

code,
pre,
.signal-bar span,
.meta-line,
.eyebrow,
.cell-label {
  font-family: "SFMono-Regular", Menlo, Monaco, "Cascadia Mono", "Segoe UI Mono", monospace;
}

code {
  font-size: 0.92em;
}

.page-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 4rem;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: #ffffff;
  box-shadow: 0 12px 28px rgba(34, 73, 48, 0.08);
  position: sticky;
  top: 0.75rem;
  z-index: 30;
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--accent-deep);
}

.site-nav nav {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav nav a {
  border: 1px solid transparent;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 120ms ease, background-color 120ms ease, border-color 120ms ease;
}

.site-nav nav a:hover {
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-color: var(--line-strong);
}

.site-nav nav a.active {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
}

.site-nav nav a.active:hover {
  color: #ffffff;
  background: var(--accent-deep);
  border-color: var(--accent-deep);
}

main {
  display: grid;
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.hero,
.panel,
.glimpse-panel,
.artifact-index,
.section-head,
.card,
.prose,
.empty-state {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 0.55rem;
  box-shadow: var(--shadow);
}

.hero {
  padding: clamp(1.4rem, 3vw, 2.5rem);
  border-top: 4px solid var(--accent);
  background:
    linear-gradient(180deg, #ffffff 0%, #ffffff 72%, var(--panel-soft) 100%);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.95fr);
  gap: 1.1rem;
  align-items: stretch;
}

.hero-copy {
  display: grid;
  align-content: start;
}

.hero h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
}

.lede {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero .lede {
  margin-top: 1rem;
  max-width: 56ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.button-primary,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.78rem 1.1rem;
  font-weight: 700;
  transition: transform 120ms ease, border-color 120ms ease, background-color 120ms ease;
}

.button-primary {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.button-secondary {
  border: 2px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.button-primary:hover,
.button-secondary:hover {
  transform: translateY(-1px);
}

.button-primary:hover {
  border-color: var(--accent-deep);
  background: var(--accent-deep);
}

.button-secondary:hover {
  border-color: var(--accent-deep);
  background: #dfeee2;
}

.signal-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

.signal-bar span,
.meta-line,
.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.signal-bar span {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--accent-muted);
}

.hero-rail {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.hero-note {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #ffffff;
}

.hero-note-strong {
  background: var(--panel-soft);
}

.hero-note .eyebrow {
  margin-bottom: 0.7rem;
}

.hero-note-link {
  margin: 0.85rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  line-height: 1.6;
}

.hero-note-link a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.16em;
}

.hero-note-link a:hover {
  color: var(--accent-deep);
  text-decoration-color: var(--accent);
}

.hero-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
}

.hero-flow span {
  padding: 0.55rem 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
}

.hero-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.mini-metric {
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: #ffffff;
}

.mini-metric span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.mini-metric strong {
  display: block;
  margin-top: 0.35rem;
  color: var(--ink);
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  font-size: 1rem;
  line-height: 1.2;
}

.split-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
}

.glimpse-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.panel,
.glimpse-panel,
.artifact-index,
.section-head,
.prose,
.empty-state {
  padding: 1.25rem;
}

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

.artifact-index {
  background: #ffffff;
}

.artifact-index-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin-bottom: 0.9rem;
}

.artifact-index-links a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.18em;
}

.artifact-index-links a:hover {
  color: var(--accent-deep);
  text-decoration-color: var(--accent);
}

.artifact-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #ffffff;
}

.artifact-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
}

.artifact-table th,
.artifact-table td {
  padding: 0.9rem 0.95rem;
  text-align: left;
  vertical-align: top;
}

.artifact-table thead th {
  border-bottom: 1px solid var(--line);
  color: var(--accent-muted);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: "SFMono-Regular", Menlo, Monaco, "Cascadia Mono", "Segoe UI Mono", monospace;
  background: var(--panel-soft);
}

.artifact-table tbody tr + tr td {
  border-top: 1px solid var(--line);
}

.artifact-type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--accent-muted);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: "SFMono-Regular", Menlo, Monaco, "Cascadia Mono", "Segoe UI Mono", monospace;
}

.artifact-title-link {
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}

.artifact-subline,
.artifact-summary-cell,
.artifact-meta-cell {
  margin: 0.35rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.artifact-subline {
  font-size: 0.84rem;
}

.artifact-summary-cell {
  min-width: 280px;
}

.artifact-meta-cell {
  white-space: nowrap;
  font-size: 0.88rem;
}

.artifact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.glimpse-panel {
  display: grid;
  align-content: start;
  gap: 0.9rem;
  background: #ffffff;
}

.glimpse-panel h2 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.glimpse-panel .lede {
  font-size: 0.98rem;
  line-height: 1.7;
  max-width: none;
}

.glimpse-feature {
  padding-top: 0.15rem;
  border-top: 1px solid var(--line);
}

.glimpse-feature h3 {
  margin: 0.35rem 0 0;
  font-size: 1.1rem;
  line-height: 1.25;
}

.glimpse-feature p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.glimpse-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.glimpse-list li {
  display: grid;
  gap: 0.22rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.glimpse-list a {
  font-weight: 700;
  line-height: 1.4;
}

.glimpse-list span {
  color: var(--muted);
  font-size: 0.84rem;
}

.tight-list {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.7;
}

.stack-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.stack-list li {
  display: grid;
  gap: 0.22rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.stack-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.stack-list strong {
  color: var(--ink);
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  font-size: 0.98rem;
  line-height: 1.25;
}

.stack-list span {
  color: var(--muted);
  line-height: 1.6;
}

.section-head {
  display: grid;
  gap: 0.4rem;
  background: var(--panel);
}

.section-head h1,
.section-head h2 {
  margin: 0;
  font-size: clamp(1.45rem, 4vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.eyebrow {
  margin: 0;
  color: var(--accent-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  padding: 1.1rem;
  background: #ffffff;
  transition: transform 140ms ease, border-color 140ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.card h3 {
  margin: 0.4rem 0 0;
  font-size: 1.2rem;
  line-height: 1.2;
}

.card p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.meta-line {
  margin-top: 0.9rem;
  color: var(--accent-muted);
}

.document-page {
  gap: 1.2rem;
}

.prose {
  background: #ffffff;
}

.prose > *:first-child {
  margin-top: 0;
}

.prose > *:last-child {
  margin-bottom: 0;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  margin: 1.4rem 0 0.7rem;
  line-height: 1.18;
  color: var(--ink);
}

.prose h1 {
  font-size: 2rem;
}

.prose h2 {
  font-size: 1.5rem;
}

.prose h3 {
  font-size: 1.18rem;
}

.prose p,
.prose li,
.prose blockquote {
  color: #294236;
  line-height: 1.75;
}

.prose ul,
.prose ol {
  margin: 0.8rem 0;
  padding-left: 1.35rem;
}

.prose blockquote {
  margin: 1rem 0;
  padding: 0.2rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0.45rem;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.4rem 0;
}

.prose pre {
  margin: 1rem 0;
  padding: 0.95rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--panel-deep);
  color: var(--ink);
}

.prose code {
  padding: 0.12rem 0.3rem;
  border-radius: 0.18rem;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.prose pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.actions {
  margin: 0.6rem 0 0;
}

.actions a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.18em;
}

.actions:not(.actions-inline) a:hover {
  color: var(--accent-deep);
  text-decoration-color: var(--accent);
}

.actions-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-deep);
  font-size: 0.92rem;
  line-height: 1.2;
  transition: border-color 120ms ease, background-color 120ms ease, transform 120ms ease;
}

.action-link-compact {
  padding: 0.5rem 0.75rem;
  font-size: 0.86rem;
}

.action-link:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
  text-decoration-color: transparent;
}

.table-inline-link {
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.16em;
}

.table-inline-link:hover {
  color: var(--accent-deep);
  text-decoration-color: var(--accent);
}

.notebook-cell {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--panel-soft);
}

.cell-label {
  margin-bottom: 0.6rem;
  font-size: 0.76rem;
  color: var(--accent-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cell-output {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.empty-state {
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero-layout,
  .split-panel,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    position: static;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100%, calc(100% - 1rem));
    padding-top: 0.75rem;
  }

  .site-nav {
    padding: 0.85rem;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav nav {
    gap: 0.35rem;
    justify-content: flex-start;
  }

  .site-nav nav a {
    padding: 0.4rem 0.65rem;
  }

  .hero h1 {
    max-width: none;
  }

  .artifact-table th,
  .artifact-table td {
    padding: 0.8rem 0.75rem;
  }

  .hero-mini-grid {
    grid-template-columns: 1fr;
  }

  .hero-flow {
    grid-template-columns: 1fr;
  }
}