.button { display: inline-flex; align-items: center; gap: var(--space-3); min-height: 2.8rem; padding: var(--space-3) var(--space-4); border: 1px solid transparent; border-radius: var(--radius-small); font: 0.72rem/1 var(--font-mono); text-decoration: none; letter-spacing: 0.02em; transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease; }
.button--solid { background: var(--color-deep); color: var(--color-signal); }
.button--text { border-color: var(--color-line); }
.button:hover,
.button:focus-visible { transform: translateY(-2px); }
.button--text:hover,
.button--text:focus-visible { background: var(--color-surface); border-color: var(--color-ink); }
a:focus-visible { outline: 2px solid var(--color-alert); outline-offset: 4px; }

.trace-card { position: relative; min-height: 29rem; overflow: hidden; border: 1px solid var(--color-ink); background: var(--color-deep); color: var(--color-surface); box-shadow: 0.75rem 0.75rem 0 var(--color-shadow); }
.trace-card__top,
.trace-card__bottom { position: relative; z-index: 2; display: flex; justify-content: space-between; padding: var(--space-4); color: var(--color-line); font: 0.62rem/1 var(--font-mono); letter-spacing: 0.08em; }
.trace-card__bottom { position: absolute; inset: auto 0 0; color: var(--color-signal); }
.trace-canvas { position: absolute; inset: 3.4rem 0 2.5rem; background-image: linear-gradient(var(--color-line) 1px, transparent 1px), linear-gradient(90deg, var(--color-line) 1px, transparent 1px); background-size: 2.5rem 2.5rem; opacity: 0.9; }
.page-shape { position: absolute; top: 4.8rem; left: 12%; width: 35%; height: 55%; padding: var(--space-4); border: 1px solid var(--color-surface); background: var(--color-surface); transform: rotate(-5deg); box-shadow: 0.6rem 0.6rem 0 var(--color-alert); }
.page-shape::before { content: "SOURCE / 001"; color: var(--color-muted); font: 0.5rem/1 var(--font-mono); }
.page-shape i { display: block; width: 100%; height: 1px; margin-top: var(--space-3); background: var(--color-line); }
.page-shape i:nth-child(3),
.page-shape i:nth-child(5) { width: 70%; }
.trace-line { position: absolute; height: 1px; transform-origin: left center; background: var(--color-signal); }
.trace-line--one { top: 38%; left: 42%; width: 37%; transform: rotate(19deg); }
.trace-line--two { top: 51%; left: 52%; width: 27%; transform: rotate(-28deg); background: var(--color-trace); }
.trace-line--three { top: 64%; left: 44%; width: 35%; transform: rotate(15deg); background: var(--color-trace); }
.trace-node { position: absolute; width: 0.72rem; height: 0.72rem; border: 2px solid var(--color-deep); border-radius: 50%; background: var(--color-signal); box-shadow: 0 0 0 2px var(--color-signal); }
.trace-node--one { top: 36%; left: 42%; }
.trace-node--two { top: 47%; left: 69%; }
.trace-node--three { top: 60%; left: 51%; }
.trace-node--four { top: 70%; left: 78%; background: var(--color-alert); box-shadow: 0 0 0 2px var(--color-alert); }
.trace-label { position: absolute; color: var(--color-surface); font: 0.56rem/1 var(--font-mono); }
.trace-label--one { top: 31%; left: 40%; }
.trace-label--two { top: 46%; left: 71%; }
.trace-label--three { top: 73%; left: 74%; }
.graph-cluster { position: absolute; right: 8%; bottom: 10%; width: 7rem; height: 5rem; border: 1px dashed var(--color-trace); }
.graph-cluster span { position: absolute; width: 0.44rem; height: 0.44rem; border-radius: 50%; background: var(--color-signal); }
.graph-cluster span:nth-child(1) { top: 14%; left: 42%; }
.graph-cluster span:nth-child(2) { top: 55%; left: 13%; }
.graph-cluster span:nth-child(3) { top: 72%; left: 67%; }
.graph-cluster span:nth-child(4) { top: 19%; left: 82%; }
.graph-cluster span:nth-child(5) { top: 45%; left: 48%; background: var(--color-alert); }

.focus-list { border-top: var(--border-thin); }
.focus-list article { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); gap: var(--space-5); padding-block: var(--space-5); border-bottom: var(--border-thin); }
.focus-list__index,
.project-record__index { margin: 0; color: var(--color-muted); font: 0.7rem/1.3 var(--font-mono); letter-spacing: 0.06em; }
.focus-list h3 { margin: 0 0 var(--space-2); font: 400 clamp(1.45rem, 2.4vw, 2rem)/1.05 var(--font-display); letter-spacing: -0.045em; }
.focus-list article div { display: grid; grid-template-columns: minmax(15rem, 0.75fr) minmax(20rem, 1.25fr); gap: var(--space-7); align-items: baseline; }
.focus-list article div p { margin: 0; color: var(--color-muted); font-size: 0.97rem; }

.featured-case { display: grid; grid-template-columns: 1fr 3fr; gap: var(--space-6); padding: var(--space-7); background: var(--color-deep); color: var(--color-surface); }
.featured-case__meta { display: flex; flex-direction: column; justify-content: space-between; color: var(--color-signal); font: 0.65rem/1.2 var(--font-mono); letter-spacing: 0.06em; }
.featured-case__main h3 { margin-bottom: var(--space-4); font: 400 clamp(2rem, 4vw, 3.55rem)/0.98 var(--font-display); letter-spacing: -0.065em; }
.featured-case__main p { max-width: 42rem; color: var(--color-line); }
.featured-case__flow { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); padding: var(--space-4) 0; border-top: 1px solid var(--color-muted); border-bottom: 1px solid var(--color-muted); color: var(--color-signal); font: 0.72rem/1 var(--font-mono); }
.featured-case__flow b { color: var(--color-trace); }
.featured-case__notes { grid-column: 2; display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); color: var(--color-line); font-size: 0.94rem; }
.featured-case__notes p { margin: 0; }
.featured-case__notes strong { display: block; margin-bottom: var(--space-2); color: var(--color-signal); font: 0.65rem/1 var(--font-mono); letter-spacing: 0.06em; }

.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-4); }
.project-record { display: grid; grid-template-columns: 1fr; gap: var(--space-4); min-height: 17rem; padding: var(--space-5); border: var(--border-thin); background: color-mix(in srgb, var(--color-surface) 66%, transparent); transition: border-color 160ms ease, transform 160ms ease, background-color 160ms ease; }
.project-record:hover,
.project-record:focus-within { border-color: var(--color-ink); background: var(--color-surface); transform: translateY(-2px); }
.project-record h3 { max-width: 27rem; margin: 0; font: 400 clamp(1.55rem, 2.4vw, 2.15rem)/1.02 var(--font-display); letter-spacing: -0.05em; }
.project-record > p:not(.project-record__index) { margin: 0; color: var(--color-muted); font-size: 0.96rem; }
.project-record dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); margin: auto 0 0; padding-top: var(--space-4); border-top: var(--border-thin); }
.project-record dl div { display: grid; gap: var(--space-1); }
.project-record dt { color: var(--color-muted); font: 0.65rem/1.2 var(--font-mono); letter-spacing: 0.05em; }
.project-record dd { margin: 0; font-size: 0.82rem; }

.principle-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; border-top: var(--border-thin); border-bottom: var(--border-thin); }
.principle-list li { display: grid; grid-template-columns: 2rem 1fr; gap: var(--space-4); min-height: 15rem; padding: var(--space-5); border-right: var(--border-thin); }
.principle-list li:first-child { padding-left: 0; }
.principle-list li:last-child { border-right: 0; }
.principle-list li > span { color: var(--color-alert); font: 0.7rem/1.2 var(--font-mono); }
.principle-list h3 { margin: 0 0 var(--space-3); font: 400 1.35rem/1.1 var(--font-display); letter-spacing: -0.04em; }
.principle-list p { margin: 0; color: var(--color-muted); font-size: 0.94rem; }

.contact-links { display: flex; flex-direction: column; gap: var(--space-2); }
.contact-links a { width: fit-content; font: 400 clamp(1.6rem, 3.2vw, 3rem)/1.2 var(--font-display); letter-spacing: -0.045em; text-decoration-color: var(--color-trace); text-underline-offset: 0.18em; }
.external-links { display: flex; gap: var(--space-5); margin-top: var(--space-7); font: 0.76rem/1 var(--font-mono); }
.external-links a { text-underline-offset: 0.3em; }

@media (max-width: 58rem) {
  .focus-list article div { grid-template-columns: 1fr; gap: var(--space-2); }
  .featured-case { grid-template-columns: 1fr; }
  .featured-case__meta { flex-direction: row; }
  .featured-case__notes { grid-column: auto; }
  .principle-list { grid-template-columns: 1fr; }
  .principle-list li,
  .principle-list li:first-child { min-height: auto; padding: var(--space-5) 0; border-right: 0; border-bottom: var(--border-thin); }
  .principle-list li:last-child { border-bottom: 0; }
}

@media (max-width: 40rem) {
  .trace-card { min-height: 23rem; }
  .focus-list article { grid-template-columns: 3rem 1fr; gap: var(--space-3); }
  .featured-case { padding: var(--space-5); }
  .featured-case__notes,
  .project-grid,
  .project-record dl { grid-template-columns: 1fr; }
  .project-record { min-height: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}