@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Serif:wght@300;700&family=Barlow:wght@400;500;600&family=Roboto+Mono:wght@400&display=swap');

:root {
  --etrn-nav-h: 64px;
  --etrn-bg-dark: #201A14;
  --etrn-bg-dark-alt: #2E261D;
  --etrn-bg-light: #F5F1EB;
  --etrn-bg-light-alt: #EDE8DF;
  --etrn-bg-white: #FFFFFF;
  --etrn-text-on-dark: #F5F1EB;
  --etrn-muted-on-dark: #C8BFB0;
  --etrn-text-on-light: #1A1511;
  --etrn-muted-on-light: #5C5147;
  --etrn-text-on-white: #1A1511;
  --etrn-accent: #4CAD33;
  --etrn-accent-text-light: #2B6A1A;
  --etrn-accent-text-dark: #6BC549;
  --etrn-container-max: 1140px;
  --etrn-read-max: 68ch;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Barlow', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  background: var(--etrn-bg-dark);
  color: var(--etrn-text-on-dark);
}

[id] {
  scroll-margin-top: var(--etrn-nav-h);
}

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'IBM Plex Serif', Georgia, serif;
  line-height: 1.2;
  margin: 0;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); font-weight: 300; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 700; }

p {
  margin: 0;
}

.etrn-container {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.etrn-fade-in.is-visible {
  opacity: 1;
  transform: none;
}

.etrn-eyebrow {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-block;
}

.etrn-bg--dark .etrn-eyebrow {
  color: var(--etrn-accent-text-dark);
}

.etrn-bg--light .etrn-eyebrow,
.etrn-bg--light-alt .etrn-eyebrow,
.etrn-bg--white .etrn-eyebrow {
  color: var(--etrn-accent-text-light);
}

.etrn-section {
  padding-block: 5rem;
}

.etrn-section--lg {
  padding-block: 7rem;
}

.etrn-bg--dark {
  background: var(--etrn-bg-dark);
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark-alt {
  background: var(--etrn-bg-dark-alt);
  color: var(--etrn-text-on-dark);
}

.etrn-bg--light {
  background: var(--etrn-bg-light);
  color: var(--etrn-text-on-light);
}

.etrn-bg--light-alt {
  background: var(--etrn-bg-light-alt);
  color: var(--etrn-text-on-light);
}

.etrn-bg--white {
  background: var(--etrn-bg-white);
  color: var(--etrn-text-on-white);
}

.etrn-page--dark-top {
  background: var(--etrn-bg-dark);
}

.etrn-page--light-top {
  background: var(--etrn-bg-light);
}

.etrn-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--etrn-nav-h);
  background: var(--etrn-bg-dark);
  border-bottom: 1px solid rgba(245,241,235,0.08);
}

.etrn-nav__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
  gap: 2.5rem;
}

.etrn-nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.etrn-nav__logo img {
  height: 28px;
  width: auto;
  display: block;
}

.etrn-nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex: 1;
}

.etrn-nav__link {
  font-family: 'Barlow', sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--etrn-muted-on-dark);
  transition: color 0.2s;
}

.etrn-nav__link:hover,
.etrn-nav__link.is-active {
  color: var(--etrn-text-on-dark);
}

.etrn-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.etrn-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
}

.etrn-nav__hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--etrn-text-on-dark);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.etrn-nav__drawer {
  display: none;
  position: fixed;
  top: var(--etrn-nav-h);
  left: 0;
  right: 0;
  background: var(--etrn-bg-dark);
  border-bottom: 1px solid rgba(245,241,235,0.1);
  padding: 1.5rem 2rem;
  flex-direction: column;
  gap: 0.25rem;
  z-index: 999;
}

.etrn-nav__drawer.is-open {
  display: flex;
}

.etrn-nav__drawer-link {
  font-family: 'Barlow', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  color: var(--etrn-muted-on-dark);
  padding: 0.625rem 0;
  border-bottom: 1px solid rgba(245,241,235,0.06);
  transition: color 0.2s;
}

.etrn-nav__drawer-link:hover {
  color: var(--etrn-text-on-dark);
}

.etrn-nav__drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.etrn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Barlow', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.625rem 1.375rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, opacity 0.2s;
  text-decoration: none;
  border: 1.5px solid transparent;
  line-height: 1.3;
  white-space: nowrap;
}

.etrn-btn--primary {
  background: var(--etrn-accent);
  color: #0A1A06;
  border-color: var(--etrn-accent);
}

.etrn-btn--primary:hover {
  background: #5CC840;
  border-color: #5CC840;
}

.etrn-btn--outline-dark {
  background: transparent;
  color: var(--etrn-text-on-light);
  border-color: var(--etrn-text-on-light);
}

.etrn-btn--outline-dark:hover {
  background: var(--etrn-text-on-light);
  color: var(--etrn-bg-light);
}

.etrn-btn--ghost-on-dark {
  background: transparent;
  color: var(--etrn-text-on-dark);
  border-color: rgba(245,241,235,0.35);
}

.etrn-btn--ghost-on-dark:hover {
  border-color: var(--etrn-text-on-dark);
  background: rgba(245,241,235,0.06);
}

.etrn-btn--ghost-on-light {
  background: transparent;
  color: var(--etrn-text-on-light);
  border-color: rgba(26,21,17,0.3);
}

.etrn-btn--ghost-on-light:hover {
  border-color: var(--etrn-text-on-light);
  background: rgba(26,21,17,0.05);
}

.etrn-btn--sm {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
}

.etrn-pill {
  display: inline-flex;
  align-items: center;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid rgba(76,173,51,0.4);
  color: var(--etrn-accent-text-dark);
  background: rgba(76,173,51,0.08);
}

.etrn-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--etrn-nav-h) + 3rem);
  padding-bottom: 4rem;
}

.etrn-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  width: 100%;
}

.etrn-hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.etrn-hero__h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 300;
  color: var(--etrn-text-on-dark);
  line-height: 1.15;
  font-family: 'IBM Plex Serif', Georgia, serif;
  margin: 0;
}

.etrn-hero__sub {
  font-size: 1.125rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.65;
  max-width: 48ch;
  margin: 0;
}

.etrn-hero__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.etrn-hero__badge {
  margin-top: 0.25rem;
}

.etrn-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.etrn-charge-curve {
  width: 100%;
  max-width: 480px;
  height: auto;
}

.etrn-problem {
  padding-block: 5rem;
}

.etrn-problem__header {
  max-width: 52ch;
  margin-bottom: 3rem;
}

.etrn-problem__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 0;
  line-height: 1.2;
}

.etrn-problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.etrn-problem__card {
  padding: 2rem;
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.15);
  border-radius: 6px;
}

.etrn-problem__num {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
  margin-bottom: 0.75rem;
  display: block;
}

.etrn-problem__card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--etrn-text-on-white);
  margin: 0 0 0.625rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-problem__card p {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-platform {
  padding-block: 5rem;
}

.etrn-platform__header {
  max-width: 52ch;
  margin-bottom: 3.5rem;
}

.etrn-platform__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 0;
  line-height: 1.2;
}

.etrn-platform__grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}

.etrn-platform__nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.etrn-platform__nav-item {
  font-family: 'Barlow', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  color: var(--etrn-muted-on-light);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  border: none;
  background: none;
  text-align: left;
}

.etrn-platform__nav-item:hover {
  background: rgba(26,21,17,0.05);
  color: var(--etrn-text-on-light);
}

.etrn-platform__nav-item.is-active {
  background: rgba(43,106,26,0.1);
  color: var(--etrn-accent-text-light);
}

.etrn-platform__capabilities {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.etrn-capability__title {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.625rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-capability__desc {
  font-size: 1rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.65;
  max-width: 60ch;
  margin: 0;
}

.etrn-how-it-works {
  padding-block: 5rem;
}

.etrn-how-it-works__header {
  text-align: center;
  max-width: 48ch;
  margin-inline: auto;
  margin-bottom: 4rem;
}

.etrn-how-it-works__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0.5rem 0 0;
  line-height: 1.2;
}

.etrn-workflow {
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: center;
}

.etrn-workflow__step {
  flex: 1;
  max-width: 280px;
  background: var(--etrn-bg-dark);
  border: 1px solid rgba(245,241,235,0.12);
  border-radius: 6px;
  padding: 1.75rem;
}

.etrn-workflow__step-num {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-dark);
  margin-bottom: 0.875rem;
  display: block;
}

.etrn-workflow__step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0 0 0.75rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-workflow__step-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.etrn-workflow__step-list li {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--etrn-muted-on-dark);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}

.etrn-workflow__step-list li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--etrn-accent);
}

.etrn-workflow__arrow {
  flex-shrink: 0;
  width: 36px;
  text-align: center;
  color: var(--etrn-accent);
  font-size: 1.25rem;
  font-weight: 700;
}

.etrn-mini-heatmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  margin-top: 0.75rem;
}

.etrn-mini-heatmap__cell {
  height: 18px;
  border-radius: 2px;
}

.etrn-mini-chart {
  margin-top: 0.75rem;
  height: 40px;
  position: relative;
}

.etrn-team {
  padding-block: 5rem;
}

.etrn-team__header {
  text-align: center;
  max-width: 48ch;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.etrn-team__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 0;
  line-height: 1.2;
}

.etrn-team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.etrn-team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.etrn-team-card__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 1.25rem;
  background: var(--etrn-bg-light-alt);
  flex-shrink: 0;
}

.etrn-team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.etrn-team-card__name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.25rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-team-card__role {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
  margin: 0 0 0.75rem;
  display: block;
}

.etrn-team-card__bio {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-team__meta {
  text-align: center;
  margin-top: 3rem;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
}

.etrn-cta-section {
  padding-block: 6rem;
  text-align: center;
}

.etrn-cta-section__inner {
  max-width: 540px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.etrn-cta-section__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0;
  line-height: 1.2;
}

.etrn-cta-section__sub {
  font-size: 1.0625rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.65;
  max-width: 48ch;
  margin: 0;
}

.etrn-cta-section__contact {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.875rem;
  color: var(--etrn-muted-on-dark);
  margin: 0;
}

.etrn-cta-section__contact a {
  color: var(--etrn-accent-text-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-footer {
  background: var(--etrn-bg-dark);
  color: var(--etrn-text-on-dark);
  padding-top: 4rem;
  padding-bottom: 2rem;
  border-top: 1px solid rgba(245,241,235,0.08);
}

.etrn-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.etrn-footer__brand-logo {
  margin-bottom: 1rem;
}

.etrn-footer__brand-logo img {
  height: 26px;
  width: auto;
}

.etrn-footer__brand-desc {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.6;
  max-width: 32ch;
  margin: 0 0 0.75rem;
}

.etrn-footer__brand-location {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-dark);
  margin: 0;
}

.etrn-footer__col-label {
  font-family: 'Barlow', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--etrn-muted-on-dark);
  margin-bottom: 1.25rem;
  display: block;
}

.etrn-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.etrn-footer__link {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  transition: color 0.2s;
}

.etrn-footer__link:hover {
  color: var(--etrn-text-on-dark);
}

.etrn-footer__bottom {
  border-top: 1px solid rgba(245,241,235,0.08);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.etrn-footer__copy {
  font-size: 0.875rem;
  color: var(--etrn-muted-on-dark);
  margin: 0;
}

.etrn-footer__legal-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.etrn-footer__legal-link {
  font-size: 0.875rem;
  color: var(--etrn-muted-on-dark);
  transition: color 0.2s;
}

.etrn-footer__legal-link:hover {
  color: var(--etrn-text-on-dark);
}

.etrn-footer__cookie-pref {
  font-size: 0.875rem;
  color: var(--etrn-muted-on-dark);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  transition: color 0.2s;
}

.etrn-footer__cookie-pref:hover {
  color: var(--etrn-text-on-dark);
}

.etrn-subhero {
  padding-top: calc(var(--etrn-nav-h) + 4rem);
  padding-bottom: 4rem;
}

.etrn-subhero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-subhero__text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.etrn-subhero__h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.15;
  margin: 0;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-subhero__sub {
  font-size: 1.0625rem;
  line-height: 1.65;
  max-width: 52ch;
  margin: 0;
}

.etrn-subhero--dark .etrn-subhero__h1 {
  color: var(--etrn-text-on-dark);
}

.etrn-subhero--dark .etrn-subhero__sub {
  color: var(--etrn-muted-on-dark);
}

.etrn-subhero--light .etrn-subhero__h1 {
  color: var(--etrn-text-on-light);
}

.etrn-subhero--light .etrn-subhero__sub {
  color: var(--etrn-muted-on-light);
}

.etrn-subhero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.etrn-platform-feature {
  padding-block: 5rem;
}

.etrn-platform-feature__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 4rem;
}

.etrn-platform-feature--flip .etrn-platform-feature__inner {
  direction: rtl;
}

.etrn-platform-feature--flip .etrn-platform-feature__content,
.etrn-platform-feature--flip .etrn-platform-feature__visual {
  direction: ltr;
}

.etrn-platform-feature__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  margin: 0.5rem 0 1rem;
  line-height: 1.2;
}

.etrn-platform-feature__desc {
  font-size: 1rem;
  line-height: 1.65;
  max-width: 52ch;
  margin: 0 0 1.5rem;
}

.etrn-bg--dark .etrn-platform-feature__h2 {
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark .etrn-platform-feature__desc {
  color: var(--etrn-muted-on-dark);
}

.etrn-bg--light .etrn-platform-feature__h2,
.etrn-bg--light-alt .etrn-platform-feature__h2 {
  color: var(--etrn-text-on-light);
}

.etrn-bg--light .etrn-platform-feature__desc,
.etrn-bg--light-alt .etrn-platform-feature__desc {
  color: var(--etrn-muted-on-light);
}

.etrn-thermal-heatmap-container {
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.15);
  border-radius: 6px;
  padding: 1.5rem;
  overflow-x: auto;
}

.etrn-heatmap-labels-row {
  display: grid;
  grid-template-columns: 80px repeat(6, 1fr);
  gap: 3px;
  margin-bottom: 3px;
}

.etrn-heatmap-col-label {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.6875rem;
  color: var(--etrn-muted-on-light);
  text-align: center;
  padding-bottom: 4px;
}

.etrn-heatmap-grid-row {
  display: grid;
  grid-template-columns: 80px repeat(6, 1fr);
  gap: 3px;
  margin-bottom: 3px;
}

.etrn-heatmap-row-label {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.6875rem;
  color: var(--etrn-muted-on-light);
  display: flex;
  align-items: center;
}

.etrn-heatmap-cell {
  height: 32px;
  border-radius: 2px;
  position: relative;
}

.etrn-heatmap-cell--peak {
  cursor: default;
}

.etrn-heatmap-peak-tip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--etrn-bg-dark);
  color: var(--etrn-text-on-dark);
  font-family: 'Roboto Mono', monospace;
  font-size: 0.6875rem;
  padding: 4px 8px;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
}

.etrn-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.6875rem;
  color: var(--etrn-muted-on-light);
}

.etrn-heatmap-legend__bar {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, hsl(210,70%,50%), hsl(30,90%,55%));
}

.etrn-sim-dashboard {
  background: var(--etrn-bg-dark-alt);
  border: 1px solid rgba(92,81,71,0.3);
  border-radius: 6px;
  overflow-x: auto;
}

.etrn-sim-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
}

.etrn-sim-table th {
  padding: 0.875rem 1rem;
  text-align: left;
  color: var(--etrn-muted-on-dark);
  font-weight: 400;
  border-bottom: 1px solid rgba(245,241,235,0.1);
  white-space: nowrap;
}

.etrn-sim-table td {
  padding: 0.75rem 1rem;
  color: var(--etrn-text-on-dark);
  border-bottom: 1px solid rgba(245,241,235,0.06);
  white-space: nowrap;
}

.etrn-sim-table tbody tr:last-child td {
  border-bottom: none;
}

.etrn-sim-table td.etrn-sim-table__hot {
  background: rgba(107,74,14,0.35);
  color: #F5C578;
}

.etrn-sim-table caption {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--etrn-muted-on-dark);
  padding: 0.75rem 1rem;
  text-align: left;
  caption-side: bottom;
  border-top: 1px solid rgba(245,241,235,0.06);
}

.etrn-science-section {
  padding-block: 5rem;
}

.etrn-science-section__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  margin: 0.5rem 0 1rem;
  line-height: 1.2;
}

.etrn-science-section__intro {
  font-size: 1rem;
  line-height: 1.65;
  max-width: 60ch;
  margin: 0 0 2.5rem;
}

.etrn-bg--dark .etrn-science-section__h2 {
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark .etrn-science-section__intro {
  color: var(--etrn-muted-on-dark);
}

.etrn-bg--light .etrn-science-section__h2,
.etrn-bg--light-alt .etrn-science-section__h2 {
  color: var(--etrn-text-on-light);
}

.etrn-bg--light .etrn-science-section__intro,
.etrn-bg--light-alt .etrn-science-section__intro {
  color: var(--etrn-muted-on-light);
}

.etrn-about-hero {
  padding-top: calc(var(--etrn-nav-h) + 4rem);
  padding-bottom: 5rem;
}

.etrn-about-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-about-hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.etrn-about-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.etrn-about-hero__h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 300;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 1.25rem;
  line-height: 1.15;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-about-hero__sub {
  font-size: 1.125rem;
  color: var(--etrn-muted-on-light);
  max-width: 60ch;
  line-height: 1.65;
  margin: 0;
}

.etrn-mission {
  padding-block: 5rem;
}

.etrn-mission__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.etrn-mission__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 1.25rem;
  line-height: 1.2;
}

.etrn-mission__text {
  font-size: 1rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.etrn-mission__text p {
  margin: 0;
}

.etrn-mission__stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 2rem;
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.15);
  border-radius: 6px;
}

.etrn-stat__value {
  font-family: 'IBM Plex Serif', Georgia, serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--etrn-accent-text-light);
  line-height: 1;
  display: block;
}

.etrn-stat__label {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
  display: block;
  margin-top: 0.375rem;
}

.etrn-about-team {
  padding-block: 5rem;
}

.etrn-about-team__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 3rem;
  line-height: 1.2;
}

.etrn-about-team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.etrn-about-team-card {
  display: flex;
  flex-direction: column;
}

.etrn-about-team-card__avatar {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  background: var(--etrn-bg-light-alt);
}

.etrn-about-team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.etrn-about-team-card__name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.25rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-about-team-card__role {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
  display: block;
  margin-bottom: 0.875rem;
}

.etrn-about-team-card__bio {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-values {
  padding-block: 5rem;
}

.etrn-values__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0.5rem 0 3rem;
  line-height: 1.2;
}

.etrn-values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.etrn-values__item h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0 0 0.625rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-values__item p {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.6;
  margin: 0;
}

.etrn-contact-hero {
  padding-top: calc(var(--etrn-nav-h) + 4rem);
  padding-bottom: 4rem;
}

.etrn-contact-hero__inner {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-contact-hero__h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 300;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 1rem;
  line-height: 1.15;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-contact-hero__sub {
  font-size: 1.0625rem;
  color: var(--etrn-muted-on-light);
  max-width: 52ch;
  line-height: 1.65;
  margin: 0;
}

.etrn-contact-body {
  padding-block: 5rem;
}

.etrn-contact-body__inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.etrn-contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.etrn-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.etrn-form-label {
  font-family: 'Barlow', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--etrn-text-on-light);
}

.etrn-form-input,
.etrn-form-textarea,
.etrn-form-select {
  font-family: 'Barlow', sans-serif;
  font-size: 0.9375rem;
  color: var(--etrn-text-on-light);
  background: var(--etrn-bg-white);
  border: 1.5px solid rgba(92,81,71,0.25);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  width: 100%;
  transition: border-color 0.2s;
  line-height: 1.5;
}

.etrn-form-input:focus,
.etrn-form-textarea:focus,
.etrn-form-select:focus {
  outline: none;
  border-color: var(--etrn-accent-text-light);
}

.etrn-form-textarea {
  resize: vertical;
  min-height: 140px;
}

.etrn-contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 2rem;
  background: var(--etrn-bg-light-alt);
  border-radius: 6px;
}

.etrn-contact-info__h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.625rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-contact-info__detail {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-contact-info__detail a {
  color: var(--etrn-accent-text-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-blog-hero {
  padding-top: calc(var(--etrn-nav-h) + 3.5rem);
  padding-bottom: 3.5rem;
}

.etrn-blog-hero__inner {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-blog-hero__h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 300;
  color: var(--etrn-text-on-light);
  margin: 0.5rem 0 0.875rem;
  line-height: 1.15;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-blog-hero__sub {
  font-size: 1.0625rem;
  color: var(--etrn-muted-on-light);
  max-width: 52ch;
  line-height: 1.65;
  margin: 0;
}

.etrn-blog-featured {
  padding-block: 4rem;
}

.etrn-blog-featured__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: center;
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-blog-featured__cover {
  display: block;
  width: 100%;
  aspect-ratio: 1200 / 675;
  border-radius: 6px;
  overflow: hidden;
  background: var(--etrn-bg-light-alt);
}

.etrn-blog-featured__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.etrn-blog-featured__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.etrn-blog-featured__category {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
}

.etrn-blog-featured__date {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
}

.etrn-blog-featured__h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.875rem;
  line-height: 1.25;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-blog-featured__excerpt {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  max-width: 52ch;
  margin: 0 0 1.5rem;
}

.etrn-blog-grid-section {
  padding-block: 4rem;
}

.etrn-blog-grid-section__inner {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.etrn-blog-card {
  display: flex;
  flex-direction: column;
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.12);
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.etrn-blog-card:hover {
  box-shadow: 0 4px 20px rgba(26,21,17,0.08);
}

.etrn-blog-card__cover-wrap {
  display: block;
  width: 100%;
  aspect-ratio: 1200 / 675;
  overflow: hidden;
  background: var(--etrn-bg-light-alt);
}

.etrn-blog-card__cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.etrn-blog-card:hover .etrn-blog-card__cover-wrap img {
  transform: scale(1.03);
}

.etrn-blog-card__body {
  padding: 1.375rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex: 1;
}

.etrn-blog-card__category {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--etrn-accent-text-light);
  display: block;
}

.etrn-blog-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--etrn-text-on-white);
  line-height: 1.35;
  margin: 0;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-blog-card__title a {
  color: inherit;
}

.etrn-blog-card__title a:hover {
  color: var(--etrn-accent-text-light);
}

.etrn-blog-card__excerpt {
  font-size: 0.875rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-blog-card__meta {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--etrn-muted-on-light);
  margin-top: auto;
  padding-top: 0.625rem;
}

.etrn-blog-cta {
  padding-block: 5rem;
}

.etrn-blog-cta__inner {
  max-width: 580px;
  margin-inline: auto;
  text-align: center;
  padding-inline: 2rem;
}

.etrn-blog-cta__h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0.5rem 0 1rem;
  line-height: 1.2;
}

.etrn-blog-cta__sub {
  font-size: 1rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.65;
  margin: 0 0 1.75rem;
}

.etrn-article-hero {
  padding-top: calc(var(--etrn-nav-h) + 3rem);
  padding-bottom: 3rem;
  background: var(--etrn-bg-light);
}

.etrn-article-hero__inner {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-article-hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.etrn-article-hero__back {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-article-hero__back:hover {
  color: var(--etrn-accent-text-light);
  opacity: 0.8;
}

.etrn-article-hero__category {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
}

.etrn-article-hero__h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 1rem;
  line-height: 1.2;
  max-width: 18ch;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-article-hero__byline {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
}

.etrn-article-cover {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
  margin-top: 2.5rem;
}

.etrn-article-cover figure {
  margin: 0;
  width: 100%;
  aspect-ratio: 1200 / 675;
  border-radius: 6px;
  overflow: hidden;
  background: var(--etrn-bg-light-alt);
}

.etrn-article-cover figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.etrn-article-body {
  padding-block: 4rem;
}

.etrn-prose {
  max-width: var(--etrn-read-max);
  margin-inline: auto;
  padding-inline: 2rem;
}

.etrn-bg--white .etrn-prose,
.etrn-bg--light .etrn-prose {
  color: var(--etrn-text-on-light);
}

.etrn-bg--white .etrn-prose p,
.etrn-bg--white .etrn-prose li,
.etrn-bg--light .etrn-prose p,
.etrn-bg--light .etrn-prose li {
  color: var(--etrn-muted-on-light);
}

.etrn-bg--white .etrn-prose h2,
.etrn-bg--white .etrn-prose h3,
.etrn-bg--light .etrn-prose h2,
.etrn-bg--light .etrn-prose h3 {
  color: var(--etrn-text-on-light);
}

.etrn-bg--white .etrn-prose a,
.etrn-bg--light .etrn-prose a {
  color: var(--etrn-accent-text-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-bg--dark .etrn-prose {
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark .etrn-prose p,
.etrn-bg--dark .etrn-prose li {
  color: var(--etrn-muted-on-dark);
}

.etrn-bg--dark .etrn-prose h2,
.etrn-bg--dark .etrn-prose h3 {
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark .etrn-prose a {
  color: var(--etrn-accent-text-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-prose h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  margin: 2rem 0 0.875rem;
  line-height: 1.2;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-prose h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin: 1.75rem 0 0.75rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-prose p {
  font-size: 1rem;
  line-height: 1.75;
  margin: 0 0 1.125rem;
}

.etrn-prose ul,
.etrn-prose ol {
  list-style: initial;
  padding-left: 1.5rem;
  margin: 0 0 1.125rem;
}

.etrn-prose ol {
  list-style: decimal;
}

.etrn-prose li {
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 0.375rem;
}

.etrn-prose code {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.875rem;
  padding: 0.125em 0.375em;
  border-radius: 3px;
}

.etrn-bg--white .etrn-prose code,
.etrn-bg--light .etrn-prose code {
  background: rgba(92,81,71,0.08);
  color: var(--etrn-text-on-light);
}

.etrn-bg--dark .etrn-prose code {
  background: rgba(245,241,235,0.08);
  color: var(--etrn-text-on-dark);
}

.etrn-prose pre {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.875rem;
  padding: 1.25rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}

.etrn-bg--white .etrn-prose pre,
.etrn-bg--light .etrn-prose pre {
  background: var(--etrn-bg-light-alt);
  color: var(--etrn-text-on-light);
}

.etrn-bg--dark .etrn-prose pre {
  background: var(--etrn-bg-dark-alt);
  color: var(--etrn-text-on-dark);
}

.etrn-article-related {
  padding-block: 4rem;
}

.etrn-article-related__h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0 0 2rem;
  line-height: 1.2;
}

.etrn-article-related__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.etrn-article-cta {
  padding-block: 5rem;
  text-align: center;
}

.etrn-article-cta__inner {
  max-width: 520px;
  margin-inline: auto;
  padding-inline: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.etrn-article-cta__h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.875rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0;
  line-height: 1.2;
}

.etrn-article-cta__sub {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.65;
  max-width: 44ch;
  margin: 0;
}

.etrn-auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--etrn-bg-light);
  padding: 2rem;
}

.etrn-auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.15);
  border-radius: 8px;
  padding: 2.5rem;
  box-shadow: 0 8px 40px rgba(26,21,17,0.08);
}

.etrn-auth-card__logo {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.etrn-auth-card__logo img {
  height: 28px;
  width: auto;
}

.etrn-auth-card__h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--etrn-text-on-white);
  margin: 0 0 0.375rem;
  text-align: center;
  line-height: 1.2;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-auth-card__sub {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  text-align: center;
  margin: 0 0 2rem;
  line-height: 1.5;
}

.etrn-auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.etrn-auth-form .etrn-btn {
  width: 100%;
  margin-top: 0.25rem;
}

.etrn-auth-card__links {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--etrn-muted-on-light);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.etrn-auth-card__links a {
  color: var(--etrn-accent-text-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-auth-card__legal {
  text-align: center;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(92,81,71,0.1);
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
}

.etrn-auth-card__legal a {
  color: var(--etrn-accent-text-light);
}

.etrn-legal-page {
  padding-top: calc(var(--etrn-nav-h) + 4rem);
  padding-bottom: 5rem;
  background: var(--etrn-bg-light);
  min-height: 100vh;
}

.etrn-legal-content {
  max-width: var(--etrn-read-max);
  margin-inline: auto;
  padding-inline: 2rem;
  color: var(--etrn-text-on-light);
}

.etrn-legal-content h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 0 0 0.5rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-legal-content .etrn-legal-updated {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
  margin: 0 0 2.5rem;
  display: block;
}

.etrn-legal-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 2rem 0 0.75rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-legal-content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--etrn-text-on-light);
  margin: 1.5rem 0 0.625rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-legal-content p {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.75;
  margin: 0 0 1rem;
}

.etrn-legal-content ul,
.etrn-legal-content ol {
  list-style: initial;
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

.etrn-legal-content ol {
  list-style: decimal;
}

.etrn-legal-content li {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.75;
  margin-bottom: 0.375rem;
}

.etrn-legal-content a {
  color: var(--etrn-accent-text-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.etrn-404-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--etrn-bg-dark);
  padding: 2rem;
}

.etrn-404-inner {
  text-align: center;
  max-width: 480px;
}

.etrn-404-code {
  font-family: 'Roboto Mono', monospace;
  font-size: 6rem;
  font-weight: 400;
  color: rgba(245,241,235,0.12);
  line-height: 1;
  display: block;
  margin-bottom: 1.5rem;
}

.etrn-404-inner h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0 0 0.875rem;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-404-inner p {
  font-size: 1rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.65;
  margin: 0 0 2rem;
}

.etrn-pricing-card {
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.15);
  border-radius: 8px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.etrn-pricing-card--highlight {
  border-color: var(--etrn-accent);
  box-shadow: 0 0 0 1px var(--etrn-accent);
}

.etrn-pricing-card__tier {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-light);
  display: block;
}

.etrn-pricing-card__price-row {
  display: flex;
  align-items: baseline;
  gap: 0.375rem;
}

.etrn-pricing-card__price {
  font-family: 'IBM Plex Serif', Georgia, serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--etrn-text-on-white);
  line-height: 1;
}

.etrn-pricing-card__period {
  font-size: 0.875rem;
  color: var(--etrn-muted-on-light);
}

.etrn-pricing-card__desc {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.etrn-pricing-card__capacity {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-muted-on-light);
}

.etrn-pricing-card__bullets {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.etrn-pricing-card__bullets li {
  font-size: 0.9375rem;
  color: var(--etrn-text-on-white);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
}

.etrn-pricing-card__bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--etrn-accent);
}

.etrn-use-case-card {
  background: var(--etrn-bg-white);
  border: 1px solid rgba(92,81,71,0.1);
  border-radius: 6px;
  padding: 2rem;
}

.etrn-use-case-card__sector {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--etrn-accent-text-light);
  display: block;
  margin-bottom: 0.625rem;
}

.etrn-use-case-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--etrn-text-on-white);
  margin: 0 0 0.625rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-use-case-card p {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-light);
  line-height: 1.6;
  margin: 0;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--etrn-bg-dark-alt);
  border-top: 1px solid rgba(245,241,235,0.12);
  z-index: 2000;
  padding: 1rem 0;
}

.cookie-banner__inner {
  max-width: var(--etrn-container-max);
  margin-inline: auto;
  padding-inline: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cookie-banner__text {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
  margin: 0;
}

.cookie-banner__text a {
  color: var(--etrn-accent-text-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.cookie-banner__btn {
  font-family: 'Barlow', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 1.125rem;
  border-radius: 4px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  line-height: 1.3;
}

.cookie-banner__btn--primary {
  background: var(--etrn-accent);
  color: #0A1A06;
  border-color: var(--etrn-accent);
}

.cookie-banner__btn--primary:hover {
  background: #5CC840;
  border-color: #5CC840;
}

.cookie-banner__btn--secondary {
  background: transparent;
  color: var(--etrn-muted-on-dark);
  border-color: rgba(245,241,235,0.3);
}

.cookie-banner__btn--secondary:hover {
  color: var(--etrn-text-on-dark);
  border-color: var(--etrn-text-on-dark);
}

.etrn-timeline {
  position: relative;
  padding-left: 2rem;
}

.etrn-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: rgba(245,241,235,0.15);
}

.etrn-timeline__item {
  position: relative;
  padding-bottom: 2.5rem;
}

.etrn-timeline__item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--etrn-accent);
  transform: translateX(-4px);
}

.etrn-timeline__date {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8125rem;
  color: var(--etrn-accent-text-dark);
  display: block;
  margin-bottom: 0.375rem;
}

.etrn-timeline__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--etrn-text-on-dark);
  margin: 0 0 0.375rem;
  line-height: 1.3;
  font-family: 'IBM Plex Serif', Georgia, serif;
}

.etrn-timeline__desc {
  font-size: 0.9375rem;
  color: var(--etrn-muted-on-dark);
  line-height: 1.6;
  margin: 0;
}

.etrn-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.etrn-comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.etrn-comparison-table th {
  padding: 0.875rem 1.25rem;
  text-align: left;
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  border-bottom: 2px solid rgba(245,241,235,0.12);
}

.etrn-comparison-table td {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid rgba(245,241,235,0.08);
}

.etrn-bg--dark .etrn-comparison-table th {
  color: var(--etrn-text-on-dark);
}

.etrn-bg--dark .etrn-comparison-table td {
  color: var(--etrn-muted-on-dark);
}

.etrn-bg--light .etrn-comparison-table th,
.etrn-bg--light-alt .etrn-comparison-table th {
  color: var(--etrn-text-on-light);
}

.etrn-bg--light .etrn-comparison-table td,
.etrn-bg--light-alt .etrn-comparison-table td {
  color: var(--etrn-muted-on-light);
}

@media (max-width: 768px) {
  .etrn-nav__links {
    display: none;
  }

  .etrn-nav__actions {
    display: none;
  }

  .etrn-nav__hamburger {
    display: flex;
  }

  .etrn-hero__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .etrn-hero__visual {
    order: -1;
  }

  .etrn-charge-curve {
    max-width: 340px;
  }

  .etrn-problem__grid {
    grid-template-columns: 1fr;
  }

  .etrn-platform__grid {
    grid-template-columns: 1fr;
  }

  .etrn-workflow {
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
  }

  .etrn-workflow__step {
    max-width: none;
  }

  .etrn-workflow__arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .etrn-team__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .etrn-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .etrn-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .etrn-subhero__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .etrn-about-hero__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .etrn-platform-feature__inner {
    grid-template-columns: 1fr;
  }

  .etrn-platform-feature--flip .etrn-platform-feature__inner {
    direction: ltr;
  }

  .etrn-mission__inner {
    grid-template-columns: 1fr;
  }

  .etrn-about-team__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .etrn-values__grid {
    grid-template-columns: 1fr;
  }

  .etrn-contact-body__inner {
    grid-template-columns: 1fr;
  }

  .etrn-blog-featured__inner {
    grid-template-columns: 1fr;
  }

  .etrn-blog-grid {
    grid-template-columns: 1fr;
  }

  .etrn-article-related__grid {
    grid-template-columns: 1fr;
  }

  .etrn-auth-card {
    padding: 2rem 1.5rem;
  }

  .cookie-banner__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cookie-banner__actions {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .etrn-container {
    padding-inline: 1.25rem;
  }

  .etrn-hero {
    padding-top: calc(var(--etrn-nav-h) + 2rem);
    padding-bottom: 3rem;
  }

  .etrn-section {
    padding-block: 3.5rem;
  }

  .etrn-footer__grid {
    grid-template-columns: 1fr;
  }

  .etrn-hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .etrn-blog-card__cover-wrap {
    aspect-ratio: 4 / 3;
  }

  .etrn-footer__legal-links {
    gap: 1rem;
    flex-wrap: wrap;
  }
}