@font-face {
  font-family: "Playfair Display";
  src: url("/PlayfairDisplay.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/JetBrainsMono.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: InterVariable;
  src: url("/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 16px/1.5 var(--font-sans);
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 4px;
}
p {
  margin: 0 0 12px;
  color: var(--text-secondary);
}
h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.3;
}
h1 {
  font-size: 32px;
  letter-spacing: -0.8px;
}
h2 {
  font-size: 24px;
  letter-spacing: -0.4px;
}
h3 {
  font-size: 18px;
}
code {
  overflow-wrap: anywhere;
}
.skip {
  position: absolute;
  left: 16px;
  top: -100px;
  padding: 12px;
  background: var(--surface);
  z-index: 30;
}
.skip:focus {
  top: 16px;
}
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 240px;
  padding: 32px 24px;
  background: var(--surface);
  border-right: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  color: var(--text);
  font-size: 23px;
  font-weight: 700;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--radius-card);
}
.sidebar-caption {
  margin: 36px 0 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
}
nav {
  display: grid;
  gap: 8px;
}
nav a {
  padding: 12px 16px;
  min-height: 48px;
  border-radius: var(--radius-card);
  color: var(--text-secondary);
  font-weight: 500;
}
nav a:hover {
  background: var(--primary-soft);
  color: var(--accent);
}
.sidebar-note {
  margin-top: 64px;
  font-size: 14px;
}
.sidebar-note p {
  margin-top: 12px;
}
main {
  margin-left: 240px;
  padding: 40px 40px 24px;
  max-width: 1640px;
}
main:focus {
  outline: none;
}
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 28px;
}
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.1px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}
.snapshot {
  text-align: right;
}
.snapshot p {
  font-size: 14px;
  margin: 8px 0 0;
}
.badge {
  display: inline-block;
  max-width: 100%;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--background);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
}
.badge.warning {
  background: var(--warning-soft);
  color: var(--warning);
}
.badge.success {
  background: var(--success-soft);
  color: var(--success);
}
.notice {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--info-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin-bottom: 24px;
}
.notice h2 {
  font-size: 18px;
}
.notice p {
  margin-bottom: 0;
  max-width: 85ch;
}
.notice-mark {
  flex: 0 0 24px;
  border: 2px solid var(--info);
  color: var(--info);
  border-radius: 50%;
  font-weight: 600;
  line-height: 20px;
  text-align: center;
}
.summary-grid,
.built-grid,
.evidence-grid {
  display: grid;
  gap: 16px;
}
.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.summary,
.card,
.evidence {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.summary {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.summary h2 {
  font-size: 20px;
}
.summary .badge {
  margin-top: auto;
}
.section {
  margin-top: var(--section-padding);
  scroll-margin-top: 24px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.section-heading h2 {
  margin-bottom: 0;
}
.architecture {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
}
.architecture article {
  flex: 1;
  min-width: 0;
}
.architecture p {
  margin-bottom: 0;
  font-size: 14px;
}
.step,
.card-number {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 1px;
  font-weight: 600;
  display: block;
  margin-bottom: 12px;
}
.connector {
  color: var(--text-muted);
  font-size: 24px;
}
.footnote {
  margin-top: 12px;
  font-size: 14px;
  max-width: 90ch;
}
.built-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.card p:last-child {
  margin-bottom: 0;
}
.boundary {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  font-size: 14px;
}
.evidence-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.evidence {
  padding: 20px;
}
.evidence strong {
  display: block;
  font-size: 36px;
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
  margin-bottom: 12px;
}
.evidence strong span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}
.evidence p {
  font-size: 14px;
}
.evidence p:last-child {
  margin: 12px 0 0;
}
.roadmap {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  overflow: hidden;
}
.roadmap article {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px;
  border-bottom: 1px solid var(--border);
}
.roadmap article:last-child {
  border-bottom: 0;
}
.phase {
  flex: 0 0 40px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  padding-top: 2px;
}
.roadmap article div {
  flex: 1;
  min-width: 0;
}
.roadmap h3 {
  margin-bottom: 4px;
}
.roadmap p {
  margin-bottom: 0;
  font-size: 14px;
}
.roadmap .badge {
  flex-shrink: 0;
}
.next {
  margin-top: 48px;
  padding: 28px;
  background: var(--primary-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.next h2 {
  max-width: 35ch;
}
.next ol {
  padding-left: 24px;
  color: var(--text-secondary);
}
.next li {
  padding: 4px 0;
}
.next p:last-child {
  font-size: 14px;
  margin-bottom: 0;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
  padding-top: 32px;
}
@media (max-width: 1199px) {
  main {
    padding: 32px 24px 24px;
  }
  .evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .summary-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 1023px) {
  .sidebar {
    position: static;
    width: auto;
    padding: 16px 24px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-caption,
  .sidebar-note {
    display: none;
  }
  nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 12px;
  }
  nav a {
    padding: 12px 8px;
    text-align: center;
  }
  main {
    margin-left: 0;
  }
}
@media (max-width: 639px) {
  .sidebar {
    padding: 16px;
  }
  nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  main {
    padding: 24px 16px;
  }
  h1 {
    font-size: 28px;
  }
  h2 {
    font-size: 20px;
  }
  .page-header,
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }
  .snapshot {
    text-align: left;
  }
  .notice,
  .summary,
  .card,
  .evidence,
  .next {
    padding: 16px;
  }
  .built-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }
  .architecture {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
  }
  .connector {
    transform: rotate(90deg);
    align-self: center;
  }
  .roadmap article {
    flex-wrap: wrap;
    gap: 12px;
    padding: 16px;
  }
  .phase {
    flex-basis: 28px;
  }
  .roadmap .badge {
    margin-left: 40px;
  }
  footer {
    flex-direction: column;
    gap: 8px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}

p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}
h1,
h2,
h3,
.brand {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0;
}
h1 {
  font-size: clamp(36px, 4.5vw, 64px);
  line-height: 1.04;
}
.eyebrow,
.badge,
label,
code,
.sidebar-caption,
.snapshot,
.step,
.phase,
footer {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}
.badge {
  border-radius: var(--radius-pill);
}
input {
  background: var(--background);
}
.card,
.status-card,
.summary,
.evidence {
  box-shadow: var(--shadow-card);
}
.sidebar {
  background: var(--background);
}
@media (max-width: 639px) {
  h1 {
    font-size: 36px;
  }
}