:root {
  --ink: #1e2428;
  --muted: #5e6870;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --surface-tint: #f4f1ea;
  --line: #d9dedb;
  --green: #0f766e;
  --green-dark: #0b4f4a;
  --green-pale: #e7f5f2;
  --navy: #17242b;
  --navy-soft: #263840;
  --gold: #b7791f;
  --gold-pale: #fff6dd;
  --red: #9f3a38;
  --red-pale: #fff0ef;
  --blue: #315e8a;
  --blue-pale: #edf5fc;
  --shadow: 0 18px 45px rgba(30, 36, 40, 0.12);
  --shadow-soft: 0 12px 30px rgba(30, 36, 40, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "Segoe UI", "Aptos", Candara, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}

body {
  margin: 0;
  min-width: 320px;
}

.release-status {
  background: #f4c95d;
  color: #171717;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.6rem 1rem;
  text-align: center;
}

a {
  color: var(--green-dark);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid #f4c95d;
  outline-offset: 3px;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: white;
  padding: 0.75rem 1rem;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 250, 247, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--green);
  color: var(--green-dark);
  font-size: 0.82rem;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.94rem;
}

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

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 0.55rem 0.7rem;
  font: inherit;
}

.hero {
  position: relative;
  min-height: min(780px, calc(100vh - 68px));
  display: grid;
  align-items: center;
  overflow: hidden;
  background: #20272a;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.52;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(13, 24, 27, 1) 0%,
    rgba(13, 24, 27, 0.98) 40%,
    rgba(13, 24, 27, 0.82) 61%,
    rgba(13, 24, 27, 0.18) 100%
  );
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  color: white;
  padding: 4rem 0;
}

.hero-copy > * {
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero .eyebrow {
  color: #f4c269;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.8rem, 5vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.14;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin: 1.2rem 0 0;
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  color: var(--muted);
}

.hero .lede {
  color: rgba(255, 255, 255, 0.86);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 170px));
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.hero-metric {
  border-top: 2px solid rgba(244, 194, 105, 0.85);
  padding-top: 0.65rem;
}

.hero-metric strong,
.hero-metric span {
  display: block;
}

.hero-metric strong {
  font-size: 1.15rem;
}

.hero-metric span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 720;
  text-decoration: none;
}

.button.primary {
  border-color: var(--green);
  background: var(--green);
  color: white;
}

.band,
.split-band,
.page,
.article {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.band,
.split-band {
  padding: 4.5rem 0;
}

.band.compact {
  padding-block: 3rem;
}

.band.tint {
  width: auto;
  max-width: none;
  padding-inline: max(16px, calc((100% - 1120px) / 2));
  background: var(--surface-tint);
  border-block: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2rem;
}

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

.metric-grid,
.phase-grid,
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.audience-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature,
.module,
.post-row,
.metric,
.phase-card,
.audience-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.metric {
  box-shadow: var(--shadow-soft);
}

.metric strong {
  display: block;
  color: var(--green-dark);
  font-size: 1.65rem;
  line-height: 1.05;
}

.metric span {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.feature:hover,
.module:hover,
.audience-card:hover {
  border-color: #aab9b5;
  transform: translateY(-2px);
  transition: transform 150ms ease, border-color 150ms ease;
}

.feature p,
.module p,
.post-row p,
.content-section p,
.article p {
  color: var(--muted);
}

.split-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 3rem;
  border-top: 1px solid var(--line);
}

.link-list,
.check-list,
.step-list {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
}

.link-list li,
.check-list li,
.step-list li {
  margin: 0.55rem 0;
}

.page,
.article {
  padding: 4rem 0 5rem;
}

.page > h1 {
  max-width: 900px;
  font-size: clamp(2.4rem, 4.3vw, 4.4rem);
}

.article {
  width: min(820px, calc(100% - 32px));
}

.article p,
.article li {
  max-width: 72ch;
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 1.74;
}

.article .lede {
  font-family: var(--sans);
}

.article h2 {
  margin-top: 2.5rem;
}

.article-meta {
  margin: 1rem 0 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-callout {
  margin: 2rem 0;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--green);
  background: var(--surface-tint);
}

.article-callout p {
  margin: 0;
}

.source-list {
  margin-top: 1rem;
  padding-left: 1.25rem;
}

.source-list li {
  font-family: var(--sans);
  font-size: 0.98rem;
  line-height: 1.55;
}

.page.wide {
  width: min(1240px, calc(100% - 32px));
}

.doc-page {
  width: min(1180px, calc(100% - 32px));
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

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

.doc-shell {
  display: grid;
  grid-template-columns: minmax(0, 72ch) minmax(240px, 300px);
  gap: 3rem;
  align-items: start;
}

.doc-main > .content-section:first-of-type {
  margin-top: 2rem;
}

.doc-main .content-section {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  padding: 1.4rem 1.45rem 1.55rem;
}

.doc-main .content-section + .content-section {
  margin-top: 1rem;
}

.doc-main .content-section h2 {
  font-size: clamp(1.3rem, 1.5vw, 1.7rem);
}

.doc-main p,
.doc-main li {
  max-width: 68ch;
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.72;
}

.doc-main li + li {
  margin-top: 0.45rem;
}

.doc-main .check-list,
.doc-main .step-list,
.doc-main .link-list {
  max-width: 68ch;
}

.doc-main code {
  font-size: 0.88em;
}

.doc-aside {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 1rem;
}

.doc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  padding: 1rem 1.05rem;
}

.doc-card h2,
.doc-card h3 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

.doc-card p,
.doc-card li {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.doc-card ul {
  margin: 0.8rem 0 0;
  padding-left: 1.15rem;
}

.doc-card .link-list {
  margin-top: 0.2rem;
}

.section-intro {
  margin-top: 0.45rem;
}

.section-note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--gold);
  background: var(--surface-tint);
}

.callout {
  margin: 1.25rem 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-left-width: 4px;
  background: var(--surface);
}

.callout strong {
  display: block;
  margin-bottom: 0.25rem;
}

.callout.info {
  border-left-color: var(--blue);
  background: var(--blue-pale);
}

.callout.warning {
  border-left-color: var(--gold);
  background: var(--gold-pale);
}

.callout.boundary {
  border-left-color: var(--red);
  background: var(--red-pale);
}

.callout.success {
  border-left-color: var(--green);
  background: var(--green-pale);
}

.screenshot-frame {
  margin: 1.25rem 0;
  border: 1px solid var(--line);
  background: var(--surface-tint);
  box-shadow: var(--shadow-soft);
}

.screenshot-frame img {
  width: 100%;
}

.screenshot-frame figcaption {
  padding: 0.75rem 0.9rem 0.85rem;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

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

.diagram-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fffdfa 0%, #f6f3ec 100%);
  padding: 1rem;
}

.diagram-card h3 {
  margin-bottom: 0.35rem;
}

.diagram-card p {
  max-width: none;
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.55;
}

.diagram-card svg {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 0.85rem;
}

.diagram-card text {
  fill: var(--ink);
  font-family: var(--sans);
  font-size: 12px;
}

.diagram-muted {
  fill: var(--muted);
}

.content-section,
.post-list {
  margin-top: 2.5rem;
}

.post-row + .post-row {
  margin-top: 1rem;
}

.post-date {
  margin: 0 0 0.35rem;
  color: var(--red);
  font-size: 0.9rem;
  font-weight: 720;
}

.module h2,
.module h3,
.post-row h2 {
  font-size: 1.2rem;
}

.status-badge,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-tint);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 720;
  line-height: 1;
}

.status-badge.complete {
  border-color: #8bc6bb;
  background: var(--green-pale);
  color: var(--green-dark);
}

.status-badge.active {
  border-color: #e2be6f;
  background: var(--gold-pale);
  color: #76500c;
}

.status-badge.planned {
  border-color: #abc4de;
  background: var(--blue-pale);
  color: var(--blue);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.8rem 0 0;
}

.phase-card {
  box-shadow: none;
}

.phase-card h3 {
  margin-top: 0.75rem;
}

.phase-card p {
  color: var(--muted);
}

.phase-card.complete {
  border-top: 4px solid var(--green);
}

.phase-card.next {
  border-top: 4px solid var(--gold);
}

.phase-card.future {
  border-top: 4px solid var(--blue);
}

.flow {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  padding-bottom: 0.4rem;
}

.flow-step {
  min-width: 150px;
  flex: 1 0 150px;
  padding: 0.8rem;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.9rem;
}

.flow-arrow {
  align-self: center;
  color: var(--green);
  font-weight: 800;
}

.flow-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: authority-step;
  display: grid;
  gap: 0.75rem;
}

.flow-list li {
  counter-increment: authority-step;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0 0.8rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.flow-list li::before {
  content: counter(authority-step);
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  color: #fff;
  background: var(--green-dark);
  font-weight: 800;
}

.flow-list li strong,
.flow-list li span {
  grid-column: 2;
}

.flow-list li span {
  margin-top: 0.15rem;
  color: var(--muted);
}

.module-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin: 2rem 0 1rem;
}

.module-filter {
  width: min(100%, 360px);
}

.module-filter label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.module-filter input {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

.module-category {
  margin-top: 3rem;
}

.module-category > header {
  max-width: 760px;
  margin-bottom: 1rem;
}

.module[hidden] {
  display: none;
}

.empty-filter {
  display: none;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--gold-pale);
}

.empty-filter.is-visible {
  display: block;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.25rem 0;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 0.94rem;
}

th,
td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-tint);
  color: var(--ink);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

pre {
  position: relative;
  overflow-x: auto;
  background: #20272a;
  color: #f5f3ed;
  padding: 1rem;
  border: 1px solid #111719;
}

.code-block {
  position: relative;
}

.code-copy {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 1;
  border: 1px solid #66747a;
  background: #2e3a3f;
  color: #fff;
  padding: 0.35rem 0.55rem;
  font: 700 0.75rem var(--sans);
  cursor: pointer;
}

.code-copy:hover {
  background: #3b4a50;
}

code {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
}

.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  text-align: left;
}

.footer-inner h2,
.footer-inner h3 {
  color: var(--ink);
  font-size: 1rem;
}

.footer-inner ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-inner li + li {
  margin-top: 0.45rem;
}

.footer-note {
  width: min(1120px, calc(100% - 32px));
  margin: 1.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  text-align: left;
  font-size: 0.84rem;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    padding: 0.9rem 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 64px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1rem;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

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

  .hero {
    min-height: 640px;
  }

  .hero-image {
    opacity: 0.34;
    object-position: 62% center;
  }

  .hero::after {
    background: rgba(18, 22, 24, 0.86);
  }

  .feature-grid,
  .module-grid,
  .metric-grid,
  .phase-grid,
  .audience-grid,
  .split-band,
  .doc-shell,
  .diagram-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    max-width: 280px;
  }

  .doc-aside {
    position: static;
    order: -1;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 2.55rem;
  }

  .brand span:last-child {
    max-width: 190px;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}