:root {
  --bone: #f4f1e7;
  --paper: #ebe8dc;
  --ink: #101010;
  --muted: #68675f;
  --line: #cbc8bc;
  --signal: #c6f03c;
  --signal-dark: #647c00;
  --rust: #c65634;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Space Grotesk", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bone);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: var(--signal-dark);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--signal-dark);
  outline-offset: 4px;
}

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

.skip-link {
  background: var(--signal);
  font-family: var(--mono);
  font-size: 0.78rem;
  left: 1rem;
  padding: 0.7rem 0.9rem;
  position: fixed;
  top: -5rem;
  z-index: 100;
}

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

.site-header {
  align-items: center;
  background: rgb(244 241 231 / 94%);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  padding: 1rem clamp(1.25rem, 4vw, 4rem);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 500;
  gap: 0.55rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-dot {
  background: var(--signal-dark);
  border-radius: 50%;
  height: 0.55rem;
  width: 0.55rem;
}

.site-nav {
  align-items: center;
  display: flex;
  font-family: var(--mono);
  font-size: 0.72rem;
  gap: clamp(0.8rem, 2vw, 1.8rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  text-decoration: none;
}

.buy-link {
  border: 1px solid var(--ink);
  padding: 0.55rem 0.75rem;
}

.eyebrow,
.meta,
.label,
.source-list,
.breadcrumbs,
.toc {
  font-family: var(--mono);
}

.eyebrow,
.label {
  font-size: 0.73rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--signal-dark);
  margin: 0 0 1.25rem;
}

.learn-hero,
.article-hero {
  border-bottom: 1px solid var(--line);
  padding: clamp(4rem, 10vw, 9rem) clamp(1.25rem, 6vw, 6rem);
}

.learn-hero-inner,
.article-hero-inner,
.section-inner,
.site-footer-inner {
  margin-inline: auto;
  max-width: 82rem;
}

.learn-hero h1,
.article-hero h1 {
  font-size: clamp(3.1rem, 8vw, 7.75rem);
  letter-spacing: -0.065em;
  line-height: 0.9;
  margin: 0;
  max-width: 12ch;
}

.article-hero h1 {
  font-size: clamp(2.8rem, 7vw, 6.6rem);
  max-width: 14ch;
}

.hero-dek {
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.5;
  margin: 2rem 0 0;
  max-width: 48rem;
}

.meta {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.72rem;
  gap: 0.7rem 1.4rem;
  letter-spacing: 0.06em;
  margin-top: 2rem;
  text-transform: uppercase;
}

.trend-note,
.disclosure {
  border-left: 4px solid var(--signal-dark);
  font-size: 0.92rem;
  margin-top: 2rem;
  max-width: 54rem;
  padding: 0.4rem 0 0.4rem 1rem;
}

.trend-note strong,
.disclosure strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.section {
  border-bottom: 1px solid var(--line);
  padding: clamp(4rem, 8vw, 7rem) clamp(1.25rem, 6vw, 6rem);
}

.story-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
}

.story-card {
  background: var(--paper);
  min-height: 19rem;
  padding: clamp(1.5rem, 4vw, 3rem);
}

.story-card h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin: 1.2rem 0;
}

.story-card p {
  color: var(--muted);
  max-width: 34rem;
}

.story-card a {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  margin-top: 1.4rem;
  text-transform: uppercase;
}

.article-layout {
  display: grid;
  gap: clamp(2.5rem, 7vw, 7rem);
  grid-template-columns: minmax(0, 14rem) minmax(0, 46rem);
  justify-content: center;
  padding: clamp(3rem, 8vw, 7rem) clamp(1.25rem, 6vw, 6rem);
}

.article-aside {
  align-self: start;
  position: sticky;
  top: 6.25rem;
}

.breadcrumbs {
  color: var(--muted);
  font-size: 0.69rem;
  line-height: 1.5;
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.toc {
  border-top: 1px solid var(--line);
  font-size: 0.73rem;
  line-height: 1.45;
  padding-top: 1.25rem;
}

.toc strong {
  display: block;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.toc a {
  color: var(--muted);
  display: block;
  margin: 0.7rem 0;
  text-decoration: none;
}

.article-body {
  font-size: 1.08rem;
  min-width: 0;
}

.article-body > :first-child {
  margin-top: 0;
}

.article-body h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin: 4.5rem 0 1.25rem;
  scroll-margin-top: 7rem;
}

.article-body h3 {
  font-size: 1.45rem;
  letter-spacing: -0.025em;
  margin: 2.5rem 0 0.6rem;
  scroll-margin-top: 7rem;
}

.article-body p,
.article-body li {
  color: #33332f;
}

.article-body a {
  color: #273400;
}

.article-body ul,
.article-body ol {
  padding-left: 1.35rem;
}

.article-body li + li {
  margin-top: 0.7rem;
}

.answer-box,
.fact-box,
.update-box {
  background: var(--paper);
  border: 1px solid var(--line);
  margin: 2rem 0;
  padding: 1.4rem 1.5rem;
}

.answer-box {
  border-left: 5px solid var(--signal-dark);
}

.answer-box strong,
.fact-box strong,
.update-box strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.45rem;
  text-transform: uppercase;
}

.signal-flow {
  background: var(--ink);
  color: var(--bone);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 2.5rem 0;
}

.signal-flow div {
  background: #181816;
  min-height: 8rem;
  padding: 1.1rem;
}

.signal-flow span {
  color: var(--signal);
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  margin-bottom: 0.8rem;
}

.timeline {
  border-left: 1px solid var(--line);
  margin: 2.5rem 0 3.5rem;
  padding-left: 1.5rem;
}

.timeline article {
  margin: 0 0 2.5rem;
  position: relative;
}

.timeline article::before {
  background: var(--signal-dark);
  border: 4px solid var(--bone);
  border-radius: 50%;
  content: "";
  height: 0.8rem;
  left: -1.94rem;
  position: absolute;
  top: 0.35rem;
  width: 0.8rem;
}

.timeline time {
  color: var(--signal-dark);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline h3 {
  margin-top: 0.35rem;
}

.comparison-wrap {
  margin: 2.5rem 0;
  overflow-x: auto;
}

.comparison {
  border-collapse: collapse;
  font-size: 0.94rem;
  min-width: 44rem;
  width: 100%;
}

.comparison th,
.comparison td {
  border: 1px solid var(--line);
  padding: 0.9rem;
  text-align: left;
  vertical-align: top;
}

.comparison th {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.comparison td:first-child {
  font-weight: 700;
}

.two-system-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 2.5rem 0;
}

.system-card {
  background: var(--paper);
  padding: 1.5rem;
}

.system-card h3 {
  margin-top: 0.5rem;
}

.system-card .label {
  color: var(--signal-dark);
}

.cta {
  background: var(--ink);
  color: var(--bone);
  margin: 4.5rem 0 0;
  padding: clamp(1.5rem, 4vw, 3rem);
}

.cta h2 {
  color: var(--bone);
  margin: 0;
}

.cta p {
  color: rgb(244 241 231 / 70%);
  max-width: 38rem;
}

.cta a {
  background: var(--signal);
  color: var(--ink);
  display: inline-flex;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  margin-top: 1rem;
  padding: 0.85rem 1.1rem;
  text-decoration: none;
  text-transform: uppercase;
}

.faq {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1.2rem 0;
}

.faq summary {
  cursor: pointer;
  font-size: 1.08rem;
  font-weight: 700;
}

.faq details p {
  margin-bottom: 0;
}

.sources {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: clamp(3rem, 7vw, 5rem) clamp(1.25rem, 6vw, 6rem);
}

.sources-inner {
  margin-inline: auto;
  max-width: 68rem;
}

.sources h2 {
  font-size: 1.8rem;
  margin: 0 0 1.25rem;
}

.source-list {
  font-size: 0.76rem;
  line-height: 1.55;
  margin: 0;
  padding-left: 1.2rem;
}

.source-list li + li {
  margin-top: 0.85rem;
}

.site-footer {
  background: var(--ink);
  color: var(--bone);
  padding: 3rem clamp(1.25rem, 6vw, 6rem);
}

.site-footer-inner {
  display: flex;
  gap: 2rem;
  justify-content: space-between;
}

.site-footer p {
  color: rgb(244 241 231 / 58%);
  font-size: 0.85rem;
  margin: 0;
  max-width: 44rem;
}

.site-footer a {
  white-space: nowrap;
}

.site-footer-actions {
  align-items: flex-end;
  display: flex;
  flex-direction: column;
  font-family: var(--mono);
  font-size: 0.72rem;
  gap: 0.75rem;
  letter-spacing: 0.04em;
}

.policy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  justify-content: flex-end;
}

.policy-hero {
  border-bottom: 1px solid var(--line);
  padding: clamp(4rem, 9vw, 8rem) clamp(1.25rem, 6vw, 6rem);
}

.policy-hero-inner,
.policy-layout {
  margin-inline: auto;
  max-width: 72rem;
}

.policy-hero h1 {
  font-size: clamp(2.8rem, 7vw, 6.2rem);
  letter-spacing: -0.06em;
  line-height: 0.94;
  margin: 0;
  max-width: 13ch;
}

.policy-effective {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  margin: 2rem 0 0;
  text-transform: uppercase;
}

.policy-layout {
  display: grid;
  gap: clamp(2rem, 6vw, 6rem);
  grid-template-columns: minmax(10rem, 0.6fr) minmax(0, 2fr);
  padding: clamp(3rem, 7vw, 6rem) clamp(1.25rem, 6vw, 6rem);
}

.policy-aside {
  align-self: start;
  border-top: 2px solid var(--ink);
  display: grid;
  font-family: var(--mono);
  font-size: 0.72rem;
  gap: 0.75rem;
  padding-top: 1rem;
  position: sticky;
  top: 6rem;
}

.policy-body {
  max-width: 48rem;
}

.policy-body section + section {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding-top: 3rem;
}

.policy-body h2 {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 0 0 1.25rem;
}

.policy-body p {
  color: #33332f;
  font-size: 1.02rem;
  margin: 0;
}

.policy-body p + p {
  margin-top: 1rem;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav a:not(.buy-link) {
    display: none;
  }

  .story-grid,
  .two-system-grid {
    grid-template-columns: 1fr;
  }

  .article-layout {
    display: block;
  }

  .policy-layout {
    display: block;
  }

  .policy-aside {
    margin-bottom: 3rem;
    position: static;
  }

  .article-aside {
    margin-bottom: 2.5rem;
    position: static;
  }

  .toc {
    columns: 2;
  }

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

  .site-footer-inner {
    display: block;
  }

  .site-footer-actions {
    align-items: flex-start;
    margin-top: 2rem;
  }

  .policy-links {
    justify-content: flex-start;
  }

  .site-footer a {
    display: inline-block;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}