:root {
  --surface: #101412;
  --surface-dim: #101412;
  --surface-bright: #363a38;
  --void: #070708;
  --canvas: #131315;
  --panel: #141418;
  --panel-low: #181c1b;
  --panel-mid: #1c201f;
  --panel-high: #272b29;
  --ink: #ffffff;
  --ink-soft: #e0e3e0;
  --ink-muted: #c4c7c8;
  --technical: #8e928f;
  --grid: #575762;
  --hairline: #26262e;
  --hairline-active: #33333d;
  --crimson: #8d1f1f;
  --crimson-bright: #ff453a;
  --crimson-tint: #260a08;
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "Space Mono", monospace;
  --gutter: 24px;
  --header-height: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink-soft);
  background: var(--void);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--header-height);
  z-index: 100;
  border-bottom: 1px solid var(--hairline);
  background: rgba(7, 7, 8, 0.94);
}
.header-inner {
  height: 100%;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font: 600 12px/1 var(--font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.brand-mark { width: 8px; height: 8px; background: var(--crimson-bright); }
.brand-year { color: var(--technical); }
.desktop-nav { display: flex; justify-self: center; gap: 36px; }
.desktop-nav a, .header-inquire, .menu-trigger {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.desktop-nav a { color: var(--ink-muted); }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 24px; }
.header-location { color: var(--technical); font: 400 10px/1 var(--font-mono); letter-spacing: .08em; }
.header-inquire { border: 1px solid var(--hairline); padding: 12px 14px; }
.header-inquire:hover { border-color: var(--crimson-bright); color: var(--crimson-bright); }
.menu-trigger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--ink);
}

.nav-overlay {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 90;
  display: grid;
  grid-template-columns: 1fr 1fr;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, visibility .2s ease;
  background: var(--void);
}
.nav-overlay.open { visibility: visible; opacity: 1; pointer-events: auto; }
.nav-overlay-main {
  padding: 48px var(--gutter);
  border-right: 1px solid var(--hairline);
}
.nav-overlay-links { display: grid; gap: 0; }
.nav-overlay-links a {
  border-bottom: 1px solid var(--hairline);
  padding: 22px 8px;
  font: 600 clamp(32px, 5vw, 64px)/1.05 var(--font-display);
  letter-spacing: -.02em;
  text-transform: uppercase;
}
.nav-overlay-links a:hover { color: var(--crimson-bright); }
.nav-overlay-meta { padding: 48px var(--gutter); color: var(--technical); font: 400 11px/1.8 var(--font-mono); text-transform: uppercase; }

main { min-height: 100vh; padding-top: var(--header-height); }
.page-shell { width: 100%; }
.page-header {
  padding: 48px var(--gutter);
  border-bottom: 1px solid var(--hairline);
}
.page-kicker, .eyebrow {
  color: var(--technical);
  font: 500 11px/1.6 var(--font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.page-kicker::before, .eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  background: var(--crimson-bright);
}
.page-title, .section-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -.02em;
  text-transform: uppercase;
}
.page-title { font-size: clamp(36px, 6vw, 56px); line-height: 1.1; }
.section-title { font-size: clamp(28px, 4vw, 40px); line-height: 1.2; }

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  padding: var(--gutter);
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
  background: var(--canvas);
}
.quadrant-grid {
  position: absolute;
  inset: var(--gutter);
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hairline);
}
.quadrant {
  position: relative;
  overflow: hidden;
  min-height: 240px;
  background: var(--void);
}
.quadrant-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .38;
  filter: grayscale(.35);
  transition: opacity .5s ease, transform .7s ease, filter .5s ease;
}
.quadrant:hover .quadrant-image { opacity: .75; transform: scale(1.025); filter: grayscale(0); }
.quadrant::after { content: ""; position: absolute; inset: 0; background: rgba(7, 7, 8, .18); }
.quadrant-meta, .quadrant-copy { position: absolute; z-index: 2; left: 32px; right: 32px; }
.quadrant-meta { top: 24px; display: flex; justify-content: space-between; color: var(--technical); font: 400 10px/1 var(--font-mono); letter-spacing: .12em; }
.quadrant-copy { bottom: 28px; }
.quadrant-copy span { display: block; color: var(--ink-muted); font: 400 10px/1.4 var(--font-mono); text-transform: uppercase; }
.quadrant-copy h2 { margin: 6px 0 0; font: 600 clamp(18px, 2vw, 24px)/1.2 var(--font-display); text-transform: uppercase; }
.hero-reticle { position: absolute; z-index: 3; inset: 50% auto auto 50%; width: 96px; height: 96px; transform: translate(-50%, -50%) rotate(45deg); border: 1px solid var(--hairline-active); background: rgba(7,7,8,.88); pointer-events: none; }
.hero-reticle::after { content: ""; position: absolute; inset: 42px; width: 10px; height: 10px; transform: rotate(-45deg); background: var(--crimson-bright); }

.manifesto { padding: 96px var(--gutter); border-bottom: 1px solid var(--hairline); }
.manifesto-inner { max-width: 1120px; margin: 0 auto; }
.manifesto h2 { max-width: 900px; margin: 32px 0; font: 400 clamp(28px, 4.5vw, 56px)/1.18 var(--font-display); letter-spacing: -.02em; }
.manifesto-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; padding-top: 32px; border-top: 1px solid var(--hairline); color: var(--technical); }

.archive-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; }
.archive-main { padding: 48px var(--gutter); }
.filter-bar { margin-bottom: 32px; padding: 16px; border: 1px solid var(--hairline); background: var(--surface); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.filter-group { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-button, .technical-button {
  border: 1px solid var(--hairline);
  border-radius: 0;
  background: transparent;
  color: var(--ink-muted);
  padding: 10px 12px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.filter-button:hover, .filter-button.active, .technical-button:hover { border-color: var(--crimson-bright); color: var(--ink); }
.filter-button.active { border-bottom-color: var(--crimson-bright); }
.search-input {
  min-width: 220px;
  border: 1px solid var(--hairline);
  border-radius: 0;
  outline: 0;
  background: var(--void);
  color: var(--ink);
  padding: 10px 12px;
}
.search-input:focus { border-color: var(--crimson); }
.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.project-card { border: 1px solid var(--hairline); background: var(--panel-mid); transition: border-color .2s ease, transform .3s ease; }
.project-card:hover { border-color: var(--hairline-active); transform: translateY(-3px); }
.project-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--void); }
.project-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.45) contrast(1.08); transition: transform .5s ease, filter .5s ease; }
.project-card:hover img { transform: scale(1.025); filter: grayscale(0); }
.project-card-body { padding: 18px; border-top: 1px solid var(--hairline); }
.project-card-meta { display: flex; justify-content: space-between; gap: 16px; color: var(--technical); font: 400 10px/1.4 var(--font-mono); text-transform: uppercase; }
.project-card h2, .project-card h3 { margin: 8px 0 0; font: 600 20px/1.25 var(--font-display); text-transform: uppercase; }
.semester-filter { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.semester-filter button { min-height: 42px; }
.empty-state { display: none; border: 1px solid var(--hairline); padding: 64px 24px; text-align: center; }
.empty-state.show { display: block; }
.archive-rail { border-left: 1px solid var(--hairline); background: var(--panel-low); padding: 32px var(--gutter); }
.archive-rail-inner { position: sticky; top: 96px; }
.rail-title { padding-bottom: 16px; border-bottom: 1px solid var(--hairline); }
.rail-links { margin-top: 16px; }
.rail-links a { display: flex; justify-content: space-between; border-left: 2px solid transparent; padding: 10px 8px; color: var(--technical); font: 500 11px/1 var(--font-mono); }
.rail-links a:hover, .rail-links a.active { border-left-color: var(--crimson-bright); color: var(--ink); background: var(--panel-high); }

.content-section { padding: 64px var(--gutter); border-bottom: 1px solid var(--hairline); }
.content-grid { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.content-main { grid-column: span 8; }
.content-aside { grid-column: span 4; color: var(--technical); }
.detail-header { padding: 48px var(--gutter) 32px; border-bottom: 1px solid var(--hairline); }
.detail-meta { max-width: 1120px; margin: 24px auto 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); }
.detail-meta div { padding: 20px; background: var(--void); }
.detail-meta span { display: block; color: var(--technical); font: 400 10px/1.4 var(--font-mono); text-transform: uppercase; }
.detail-meta strong { font: 600 14px/1.4 var(--font-display); text-transform: uppercase; }
.detail-hero { width: 100%; aspect-ratio: 16 / 9; max-height: 720px; object-fit: cover; background: var(--void); }
.detail-body { max-width: 1120px; margin: 0 auto; padding: 64px var(--gutter); display: grid; grid-template-columns: 2fr 1fr; gap: 48px; }
.detail-plate-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.detail-plate-grid figure { margin: 0; }
.detail-plate-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.detail-plate-grid figcaption { padding-top: 8px; color: var(--technical); font: 400 10px/1.5 var(--font-mono); text-transform: uppercase; }

.about-hero, .contact-layout { max-width: 1120px; margin: 0 auto; padding: 64px var(--gutter); }
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; }
.about-grid h2 { margin-top: 0; }
.about-portrait { aspect-ratio: 4 / 5; background: var(--panel); border: 1px solid var(--hairline); }
.about-placeholder { height: 100%; display: grid; place-items: center; color: var(--technical); text-align: center; font: 400 10px/1.6 var(--font-mono); text-transform: uppercase; }
.contact-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; }
.contact-form { display: grid; gap: 16px; }
.form-field { display: grid; gap: 6px; }
.form-field label { color: var(--technical); font: 500 10px/1 var(--font-mono); text-transform: uppercase; }
.form-field input, .form-field textarea { width: 100%; border: 1px solid var(--hairline); border-radius: 0; outline: none; background: var(--panel-low); color: var(--ink); padding: 14px; resize: vertical; }
.form-field textarea { min-height: 180px; }
.form-field input:focus, .form-field textarea:focus { border-color: var(--crimson); }
.form-submit { border: 1px solid var(--ink); border-radius: 0; background: var(--ink); color: var(--canvas); padding: 14px 18px; font: 600 11px/1 var(--font-mono); text-transform: uppercase; }
.form-submit:hover { border-color: var(--crimson-bright); background: var(--crimson); color: var(--ink); }

.site-footer { padding: 32px var(--gutter); border-top: 1px solid var(--hairline); color: var(--technical); font: 400 10px/1.5 var(--font-mono); text-transform: uppercase; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }

@media (max-width: 1023px) {
  .header-location { display: none; }
  .archive-layout { grid-template-columns: 1fr; }
  .archive-rail { border-left: 0; border-top: 1px solid var(--hairline); }
  .archive-rail-inner { position: static; }
  .rail-links { display: grid; grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 767px) {
  :root { --gutter: 16px; --header-height: 64px; }
  .header-inner { grid-template-columns: 1fr auto; }
  .desktop-nav, .header-inquire { display: none; }
  .menu-trigger { display: block; }
  .brand-year { display: none; }
  .nav-overlay { grid-template-columns: 1fr; }
  .nav-overlay-meta { border-top: 1px solid var(--hairline); padding-top: 24px; }
  .hero { min-height: 720px; }
  .quadrant-grid { grid-template-columns: 1fr; grid-template-rows: repeat(4, 1fr); }
  .quadrant { min-height: 150px; }
  .quadrant-meta, .quadrant-copy { left: 16px; right: 16px; }
  .quadrant-meta { top: 12px; }
  .quadrant-copy { bottom: 12px; }
  .hero-reticle { width: 64px; height: 64px; }
  .hero-reticle::after { inset: 28px; }
  .manifesto { padding-top: 64px; padding-bottom: 64px; }
  .manifesto-grid, .detail-body, .about-grid, .contact-layout { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .filter-bar { align-items: stretch; }
  .search-input { width: 100%; }
  .semester-filter { grid-template-columns: repeat(2, 1fr); }
  .rail-links { grid-template-columns: repeat(2, 1fr); }
  .content-main, .content-aside { grid-column: span 12; }
  .detail-meta { grid-template-columns: 1fr; }
  .detail-plate-grid { grid-template-columns: 1fr; }
  .detail-body { display: block; }
  .footer-inner { flex-direction: column; }
}