:root {
  --brand: #008986;
  --brand-dark: #006f6c;
  --brand-light: #4fd5d1;
  --ink: #101418;
  --ink-soft: #39424e;
  --hero-bg: #101418;
  --hero-fg: #ffffff;
  --hero-muted: rgba(255,255,255,0.78);
  --muted: #687383;
  --paper: #ffffff;
  --wash: #f7f8fa;
  --line: #d9dee7;
  --green: #15803d;
  --blue: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #4fd5d1;
    --brand-dark: #129390;
    --brand-light: #81ede8;
    --ink: #f7f8fa;
    --ink-soft: #d6dce5;
    --hero-bg: #071315;
    --hero-fg: #f7f8fa;
    --hero-muted: rgba(247,248,250,0.78);
    --muted: #a5afbd;
    --paper: #15191f;
    --wash: #0f1217;
    --line: #29313b;
  }
}

body {
  background: var(--wash);
  color: var(--ink);
}

header {
  background: var(--hero-bg);
  color: var(--hero-fg);
  min-height: 420px;
  padding: 28px 20px 54px;
  text-align: left;
}

header::after {
  background: var(--brand);
  height: 6px;
}

header h1,
header .subtitle,
header .version {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

header h1 {
  font-size: clamp(2.3rem, 6vw, 5rem);
  letter-spacing: 0;
  line-height: 1.02;
  margin-top: 86px;
  max-width: 920px;
}

header .subtitle {
  color: var(--hero-muted);
  font-size: 1.12rem;
  line-height: 1.75;
  margin-bottom: 0;
  margin-top: 14px;
  max-width: 720px;
}

header .version {
  background: color-mix(in oklab, var(--brand) 16%, transparent);
  border: 1px solid color-mix(in oklab, var(--brand) 42%, transparent);
  border-radius: 999px;
  color: var(--brand-light);
  display: block;
  font-size: 0.84rem;
  margin-top: 26px;
  padding: 7px 14px;
  width: max-content;
}

.chapter-nav {
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 10px 26px rgba(15,23,42,0.06);
}

.chapter-nav a {
  color: var(--brand);
}

.chapter-nav a:hover {
  color: var(--brand-dark);
}

.chapter-nav .nav-title {
  color: var(--ink);
}

.lang-links {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.86rem;
  font-weight: 700;
  gap: 8px;
  margin-top: 18px;
}

.lang-links a {
  color: var(--brand-light);
  text-decoration: none;
}

.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px auto 0;
  max-width: 1120px;
}

.entry-links a {
  align-items: center;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 8px;
  color: var(--hero-fg);
  display: inline-flex;
  font-size: 0.94rem;
  font-weight: 800;
  min-height: 42px;
  padding: 10px 14px;
  text-decoration: none;
}

.entry-links a:hover {
  background: rgba(255,255,255,0.1);
}

.entry-links .entry-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
}

.entry-links .entry-primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
}

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

@media (prefers-color-scheme: dark) {
  .chapter-nav {
    background: rgba(15,18,23,0.94);
  }
}

.container,
section {
  max-width: 1120px;
}

section {
  margin: 34px auto;
}

section > h1,
section > h2 {
  border-bottom: 0;
  color: var(--ink);
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  letter-spacing: 0;
  margin-bottom: 12px;
  padding: 0;
}

p {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.78;
}

.intro-hero {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(16,20,24,0.08);
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  margin: -86px auto 34px;
  max-width: 1120px;
  padding: 28px;
  position: relative;
  z-index: 2;
}

.intro-hero h2 {
  color: var(--ink);
  font-size: clamp(1.9rem, 4vw, 3.15rem);
  letter-spacing: 0;
  line-height: 1.08;
  margin-bottom: 16px;
}

.intro-hero p {
  color: var(--ink-soft);
  font-size: 1.06rem;
}

.copy-block,
.lead-block,
.prose {
  max-width: 760px;
}

.copy-block p,
.lead-block p,
.prose p {
  margin: 0 0 0.9rem;
}

.copy-block p:last-child,
.lead-block p:last-child,
.prose p:last-child {
  margin-bottom: 0;
}

.eyebrow {
  color: var(--brand);
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-copy {
  align-self: center;
  padding: 10px;
}

.hero-shot {
  background: #0f1217;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 42px rgba(15,23,42,0.18);
  display: block;
  margin: 0;
  max-width: 100%;
}

.metric-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.metric {
  border-left: 3px solid var(--brand);
  padding-left: 12px;
}

.metric strong {
  color: var(--ink);
  display: block;
  font-size: 1.42rem;
  line-height: 1.1;
}

.metric span {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  margin-top: 4px;
}

.intro-grid,
.three-grid {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

.intro-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.intro-card,
.card,
.proposal-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(15,23,42,0.05);
}

.intro-card,
.proposal-card {
  color: var(--ink);
  display: block;
  padding: 22px;
  text-decoration: none;
}

.intro-card:hover {
  border-color: var(--brand);
  transform: translateY(-1px);
}

.intro-card h3,
.proposal-card h3 {
  color: var(--ink);
  font-size: 1.08rem;
  margin: 0 0 8px;
}

.intro-card p,
.proposal-card p {
  color: var(--muted);
  margin-bottom: 0;
}

.card {
  padding: 24px;
}

.lead {
  color: var(--ink-soft);
  font-size: 1.12rem;
  max-width: 820px;
}

.lead-block p {
  color: var(--ink-soft);
  font-size: 1.12rem;
}

.section-kicker {
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.split {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
}

table {
  font-size: 0.94rem;
}

th {
  background: color-mix(in oklab, var(--brand) 9%, transparent);
  color: var(--brand-dark);
}

td {
  color: var(--ink-soft);
}

tr:hover td {
  background: color-mix(in oklab, var(--brand) 5%, transparent);
}

.status-list {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  list-style: none;
  padding: 6px 22px;
}

.status-list li {
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 13px 0;
}

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

.pill {
  background: color-mix(in oklab, var(--brand) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--brand) 32%, transparent);
  border-radius: 999px;
  color: var(--brand-dark);
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  margin: 0 7px 8px 0;
  padding: 4px 10px;
}

.pill-row {
  margin: 18px 0 14px;
}

.prose ul {
  margin-top: 16px;
}

.info,
.warn,
.tip {
  border-radius: 8px;
  color: var(--ink-soft);
  line-height: 1.78;
}

.info {
  background: color-mix(in oklab, var(--brand) 8%, transparent);
  border-left-color: var(--brand);
}

.warn {
  background: rgba(245,158,11,0.1);
  border-left-color: #f59e0b;
}

.tip {
  background: rgba(21,128,61,0.08);
  border-left-color: var(--green);
}

.page-links {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin: 36px auto;
  max-width: 1120px;
}

.page-links a {
  background: var(--brand-dark);
  border: 1px solid var(--brand-dark);
  border-radius: 8px;
  color: var(--hero-fg);
  font-weight: 700;
  padding: 13px 16px;
  text-decoration: none;
}

.page-links a:first-child {
  background: var(--paper);
  color: var(--ink);
}

footer {
  background: var(--hero-bg);
  color: var(--hero-muted);
}

footer a {
  color: var(--brand-light);
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 12px auto 0;
}

.store-links a {
  align-items: center;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 8px;
  color: var(--hero-fg);
  display: inline-flex;
  font-size: 0.9rem;
  font-weight: 800;
  min-height: 40px;
  padding: 9px 13px;
  text-decoration: none;
}

.store-links a:hover {
  background: rgba(255,255,255,0.1);
}

@media (max-width: 860px) {
  header {
    min-height: 360px;
  }

  header h1 {
    margin-top: 58px;
  }

  .intro-hero,
  .split {
    grid-template-columns: 1fr;
  }

  .intro-grid,
  .three-grid,
  .metric-row {
    grid-template-columns: 1fr;
  }

  .intro-hero {
    margin-top: -62px;
    padding: 20px;
  }

  .page-links {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  header {
    min-height: 0;
    padding: 24px 16px 42px;
  }

  header h1 {
    font-size: 1.85rem;
    line-height: 1.12;
    margin-top: 28px;
  }

  header .subtitle {
    font-size: 0.98rem;
    line-height: 1.62;
  }

  .container {
    padding-inline: 12px;
  }

  .intro-hero {
    gap: 20px;
    margin-top: -30px;
    padding: 16px;
  }

  .hero-copy {
    min-width: 0;
    padding: 0;
  }

  .intro-hero h2 {
    font-size: 1.65rem;
    line-height: 1.14;
  }

  header h1,
  header .subtitle,
  .container h1,
  .container h2,
  .container h3,
  .container p {
    overflow-wrap: break-word;
    word-break: keep-all;
  }
}