* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-background-app);
  color: var(--color-text-primary);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-body);
  line-height: var(--line-height-body);
  letter-spacing: 0;
}

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

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

a:hover {
  color: var(--color-brand-primary);
}

a:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
}

.shell {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 100;
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border: var(--border-default) solid var(--border-color-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 20;
  min-height: 64px;
  border-bottom: var(--border-default) solid var(--border-color-default);
  background: color-mix(in srgb, var(--color-background-app) 94%, transparent);
  backdrop-filter: blur(12px);
}

.header-inner,
.primary-nav,
.section-links,
.header-actions,
.brand-lockup {
  display: flex;
  align-items: center;
}

.header-inner {
  min-height: 64px;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand-lockup {
  min-height: 44px;
  gap: var(--space-3);
  font-size: var(--font-size-public-site-brand-lockup-desktop);
  font-weight: 650;
  white-space: nowrap;
}

.primary-nav {
  flex: 1;
  justify-content: space-between;
  gap: var(--space-8);
}

.section-links,
.header-actions {
  gap: var(--space-6);
}

.primary-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-size: var(--font-size-table-dense);
  font-weight: 500;
  white-space: nowrap;
}

.rail-mark {
  position: relative;
  display: inline-block;
  width: 30px;
  height: 24px;
  flex: 0 0 auto;
  color: var(--color-brand-primary);
}

.rail-mark > span {
  position: absolute;
  left: 2px;
  width: 26px;
  height: 2px;
  background: currentColor;
}

.rail-mark > span:first-child {
  top: 7px;
}

.rail-mark > span:nth-child(2) {
  top: 16px;
}

.rail-mark > i {
  position: absolute;
  top: 4px;
  width: 5px;
  height: 5px;
  border: 2px solid currentColor;
  border-radius: 50%;
  background: var(--color-background-app);
}

.rail-mark > i:nth-of-type(1) {
  left: 4px;
}

.rail-mark > i:nth-of-type(2) {
  left: 13px;
  top: 13px;
}

.rail-mark > i:nth-of-type(3) {
  right: 3px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-5);
  border: var(--border-default) solid transparent;
  border-radius: var(--radius-md);
  font-weight: 650;
  line-height: 1;
  white-space: nowrap;
}

.button-compact {
  min-height: 36px !important;
  padding: 0 var(--space-4);
  background: var(--color-text-primary);
  color: var(--color-surface);
}

.button-compact:hover,
.button-primary:hover {
  background: var(--color-brand-primary);
  color: var(--color-surface);
}

.button-primary {
  background: var(--color-text-primary);
  color: var(--color-surface);
}

.button-secondary {
  border-color: var(--border-color-strong);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
}

.hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  border-bottom: var(--border-default) solid var(--border-color-default);
  background: var(--color-surface);
}

.hero-visual,
.hero-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-visual img {
  object-fit: cover;
  object-position: center;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 690px;
  align-items: center;
}

.hero-copy {
  width: min(560px, 52%);
  padding: var(--space-12) 0;
}

.hero h1,
.hero-statement,
.hero-summary,
.hero-actions {
  margin: 0;
}

.hero h1 {
  font-size: var(--font-size-public-site-hero-title-desktop);
  font-weight: 700;
  line-height: var(--line-height-public-site-hero-title-desktop);
  letter-spacing: 0;
}

.hero-statement {
  max-width: 540px;
  margin-top: var(--space-5);
  color: var(--color-text-primary);
  font-size: var(--font-size-public-site-hero-statement-desktop);
  font-weight: 600;
  line-height: var(--line-height-public-site-hero-statement-desktop);
}

.hero-summary {
  max-width: 480px;
  margin-top: var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--font-size-public-site-hero-summary-desktop);
  line-height: var(--line-height-public-site-hero-summary-desktop);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.section-band {
  padding: 104px 0;
  border-bottom: var(--border-default) solid var(--border-color-default);
}

.section-band h2 {
  max-width: 620px;
  margin: 0;
  font-size: var(--font-size-public-site-section-title-desktop);
  font-weight: 650;
  line-height: var(--line-height-public-site-section-title-desktop);
  letter-spacing: 0;
}

.section-band h2 + p {
  max-width: 620px;
  margin: var(--space-4) 0 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-public-site-section-body);
  line-height: var(--line-height-public-site-section-body);
}

.proof {
  background: var(--color-background-app);
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(500px, 1.15fr);
  align-items: center;
  gap: 80px;
}

.endpoint-line {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-8);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-brand-accent);
}

.endpoint-line span,
.proof-facts dt,
.code-heading,
.isolation-visual figcaption {
  color: color-mix(in srgb, var(--color-text-muted) 94%, var(--color-text-secondary));
  font-size: var(--font-size-label);
  font-weight: 600;
  line-height: var(--line-height-label);
}

.endpoint-line code {
  overflow-wrap: anywhere;
  color: var(--color-brand-primary);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-body);
}

.proof-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
  margin: var(--space-10) 0 0;
}

.proof-facts div {
  padding-top: var(--space-3);
  border-top: var(--border-strong) solid var(--border-color-strong);
}

.proof-facts dd {
  margin: var(--space-2) 0 0;
  color: var(--color-text-primary);
  font-weight: 600;
}

.code-panel {
  min-width: 0;
  overflow: hidden;
  border: var(--border-default) solid var(--color-text-primary);
  border-radius: var(--radius-lg);
  background: var(--color-text-primary);
  color: var(--color-surface);
}

.code-heading,
.code-response {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
}

.code-heading {
  border-bottom: var(--border-default) solid color-mix(in srgb, var(--color-surface) 16%, transparent);
  color: var(--color-surface);
}

.code-status {
  color: var(--color-brand-accent);
}

.code-panel pre {
  min-height: 230px;
  margin: 0;
  overflow-x: auto;
  padding: var(--space-8) var(--space-6);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-table-dense);
  line-height: var(--line-height-body);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.code-response {
  justify-content: flex-start;
  border-top: var(--border-default) solid color-mix(in srgb, var(--color-surface) 16%, transparent);
  color: var(--color-surface);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-code);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand-accent);
}

.isolation {
  background: var(--color-surface);
}

.isolation-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
  align-items: center;
  gap: 72px;
}

.isolation-visual {
  margin: 0;
}

.isolation-visual img {
  width: 100%;
  border: var(--border-default) solid var(--border-color-default);
  border-radius: var(--radius-lg);
}

.isolation-visual figcaption {
  margin-top: var(--space-3);
}

.boundary-statement {
  margin: var(--space-6) 0 0;
  padding: var(--space-4);
  border-left: 3px solid var(--color-brand-primary);
  background: color-mix(in srgb, var(--color-brand-primary) 8%, var(--color-surface));
  color: var(--color-text-primary);
  font-weight: 600;
}

.boundary-list {
  margin: var(--space-8) 0 0;
}

.boundary-list div {
  padding: var(--space-4) 0;
  border-top: var(--border-default) solid var(--border-color-default);
}

.boundary-list dt {
  font-weight: 650;
}

.boundary-list dd {
  margin: var(--space-1) 0 0;
  color: var(--color-text-secondary);
}

.access {
  background: color-mix(in srgb, var(--color-brand-primary) 5%, var(--color-background-app));
}

.access-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(420px, 1.15fr);
  gap: 88px;
}

.mode-note {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-8);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-brand-accent);
}

.mode-note span,
.legal-note {
  color: var(--color-text-secondary);
}

.legal-note {
  margin: var(--space-6) 0 0;
  font-size: var(--font-size-table-dense);
}

.access-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  border-top: var(--border-strong) solid var(--color-text-primary);
}

.access-link {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-default) solid var(--border-color-strong);
  font-weight: 600;
}

.access-link:nth-child(odd) {
  border-right: var(--border-default) solid var(--border-color-strong);
}

.access-link span {
  color: var(--color-brand-primary);
  font-size: var(--font-size-section-title);
}

.access-link-commercial {
  background: color-mix(in srgb, var(--color-brand-accent) 9%, transparent);
}

.access-link-pending {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.site-footer {
  padding: var(--space-8) 0;
  background: var(--color-text-primary);
  color: var(--color-surface);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  align-items: center;
  gap: var(--space-8);
}

.footer-identity {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0 var(--space-3);
}

.footer-identity > span:last-child {
  grid-column: 2;
  color: color-mix(in srgb, var(--color-background-app) 76%, transparent);
  font-size: var(--font-size-label);
}

.rail-mark-small {
  grid-row: 1 / span 2;
  color: var(--color-brand-accent);
}

.rail-mark-small > i {
  background: var(--color-text-primary);
}

.footer-meta {
  display: flex;
  gap: var(--space-8);
  margin: 0;
}

.footer-meta div {
  display: flex;
  flex-direction: column;
}

.footer-meta dt {
  color: color-mix(in srgb, var(--color-background-app) 76%, transparent);
}

.footer-meta dd {
  margin: 0;
  font-size: var(--font-size-label);
}

.footer-nav {
  display: flex;
  gap: var(--space-5);
  font-size: var(--font-size-label);
}

.footer-nav a:hover {
  color: var(--color-brand-accent);
}

@media (max-width: 980px) {
  .section-links {
    display: none;
  }

  .primary-nav {
    justify-content: flex-end;
  }

  .hero h1 {
    font-size: var(--font-size-public-site-hero-title-compact);
    line-height: var(--line-height-public-site-hero-title-compact);
  }

  .hero-statement {
    font-size: var(--font-size-public-site-hero-statement-compact);
    line-height: var(--line-height-public-site-hero-statement-compact);
  }

  .proof-layout,
  .isolation-layout,
  .access-layout {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .proof-facts {
    max-width: 680px;
  }

  .isolation-copy {
    max-width: 680px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-nav {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .shell {
    width: min(100% - 32px, 620px);
  }

  .site-header,
  .header-inner {
    min-height: 60px;
  }

  .brand-lockup {
    font-size: var(--font-size-public-site-brand-lockup-mobile);
  }

  .header-actions {
    gap: var(--space-2);
  }

  .header-actions > a:first-child {
    display: none;
  }

  .button-compact {
    min-height: 44px !important;
    padding: 0 var(--space-3);
  }

  .hero,
  .hero-inner {
    min-height: 650px;
  }

  .hero-visual img {
    object-position: center top;
  }

  .hero-inner {
    align-items: flex-end;
  }

  .hero-copy {
    position: relative;
    width: 100vw;
    margin-left: calc(50% - 50vw);
    padding: var(--space-6) max(var(--space-4), calc((100vw - 620px) / 2));
    border-radius: 0;
    background: color-mix(in srgb, var(--color-background-app) 92%, transparent);
  }

  .hero-copy::after {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 100%;
    width: 100vw;
    background: color-mix(in srgb, var(--color-background-app) 92%, transparent);
    content: '';
    pointer-events: none;
  }

  .hero-copy > * {
    position: relative;
    z-index: 1;
  }

  .hero h1 {
    font-size: var(--font-size-public-site-hero-title-mobile);
    line-height: var(--line-height-public-site-hero-title-mobile);
  }

  .hero-statement {
    max-width: 420px;
    margin-top: var(--space-4);
    font-size: var(--font-size-public-site-hero-statement-mobile);
    line-height: var(--line-height-public-site-hero-statement-mobile);
  }

  .hero-summary {
    max-width: 360px;
    font-size: var(--font-size-public-site-hero-summary-mobile);
    line-height: var(--line-height-public-site-hero-summary-mobile);
  }

  .hero-actions {
    margin-top: var(--space-6);
  }

  .section-band {
    padding: 72px 0;
  }

  .section-band h2 {
    font-size: var(--font-size-public-site-section-title-mobile);
    line-height: var(--line-height-public-site-section-title-mobile);
  }

  .proof-facts {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .code-panel pre {
    min-height: 210px;
    padding: var(--space-6) var(--space-4);
    font-size: var(--font-size-code);
    line-height: var(--line-height-table-dense);
  }

  .access-links {
    grid-template-columns: 1fr;
  }

  .access-link:nth-child(odd) {
    border-right: 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-meta,
  .footer-nav {
    grid-column: auto;
    flex-wrap: wrap;
  }

  .footer-nav a {
    display: inline-flex;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 420px) {
  .rail-mark {
    width: 26px;
  }

  .brand-lockup {
    gap: var(--space-2);
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .footer-meta {
    flex-direction: column;
    gap: var(--space-3);
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }
}