:root {
  --obsidian: #050505;
  --charcoal: #111111;
  --graphite: #242424;
  --vein: #8A8A86;
  --ice: #F2F0EA;
  --bone: #D8D2C3;
  --silver: #B8B1A3;
  --blueblack: #080B10;
  --serif: "Cormorant Garamond", Cormorant, Georgia, serif;
  --sans: "Space Grotesk", Space, Inter, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --stamp: "Archivo Black", Impact, sans-serif;
}

/* compliance lexicon: annotations appearing like curator notes stamped after inspection. Use CSS gradients and pseudo-elements for marble veining. IBM Plex Mono** in restrained small sizes. Space Grotesk** for clean contemporary tension. Short raw notes. */

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ice);
  background:
    radial-gradient(circle at 18% 10%, rgba(216, 210, 195, .08), transparent 24rem),
    radial-gradient(circle at 82% 34%, rgba(184, 177, 163, .05), transparent 20rem),
    linear-gradient(140deg, var(--obsidian), var(--blueblack) 46%, var(--charcoal));
  font-family: var(--sans);
  overflow-x: hidden;
}

body::after {
  content: "Mono** Grotesk** Mono* Grotesk*";
  position: fixed;
  width: 0;
  height: 0;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 0 18%, rgba(138, 138, 134, .12) 18.2%, transparent 18.8% 48%, rgba(242, 240, 234, .08) 48.2%, transparent 49%),
    linear-gradient(58deg, transparent 0 63%, rgba(184, 177, 163, .08) 63.2%, transparent 64%);
  opacity: .34;
  mix-blend-mode: screen;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: .13;
  background-image: repeating-radial-gradient(circle at 30% 40%, rgba(242, 240, 234, .9) 0 1px, transparent 1px 4px);
  mix-blend-mode: overlay;
}

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  color: var(--bone);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.brand, .nav-strip a, .engraved-link { color: inherit; text-decoration: none; }
.brand { font-family: var(--serif); font-size: 1.2rem; letter-spacing: .08em; text-transform: none; }
.nav-strip { display: flex; gap: .35rem; padding: .35rem; border: 1px solid rgba(184, 177, 163, .24); background: rgba(5, 5, 5, .48); backdrop-filter: blur(14px); }
.nav-strip a { padding: .55rem .75rem; transition: background .4s ease, color .4s ease; }
.nav-strip a:hover, .nav-strip a.active { background: var(--bone); color: var(--obsidian); }
.accession { justify-self: end; color: var(--vein); }

.room {
  min-height: 100vh;
  position: relative;
  padding: clamp(6rem, 8vw, 9rem) clamp(1rem, 4vw, 4rem) clamp(3rem, 6vw, 6rem);
  display: grid;
  gap: clamp(1rem, 3vw, 2rem);
}

.hero-room { grid-template-columns: minmax(0, 2fr) minmax(18rem, .82fr); align-items: stretch; }
.marble-card, .specimen-card, .label-card, .drawer-card, .artifact, .invitation-card, .hand-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(184, 177, 163, .28);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, .38), inset 0 0 0 1px rgba(242, 240, 234, .04);
}

.marble-card::before, .pale::before, .dark::before, .graphite::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    linear-gradient(116deg, transparent 0 19%, rgba(138, 138, 134, .34) 19.4%, transparent 20.1% 44%, rgba(184, 177, 163, .24) 44.4%, transparent 45.2%),
    radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(242, 240, 234, .32), transparent 0 7%, transparent 15%);
  opacity: .48;
  transform: translate3d(0, 0, 0) rotate(-3deg);
  animation: veinCrawl 12s linear infinite alternate;
  pointer-events: none;
}

.dark { background: linear-gradient(145deg, var(--blueblack), var(--charcoal) 55%, var(--obsidian)); color: var(--ice); }
.graphite { background: linear-gradient(145deg, var(--graphite), var(--charcoal)); color: var(--bone); }
.pale { background: linear-gradient(135deg, var(--ice), var(--bone)); color: var(--obsidian); }
.hero-slab { min-height: calc(100vh - 12rem); padding: clamp(1.4rem, 4vw, 4rem); display: flex; flex-direction: column; justify-content: space-between; }
.kicker, .card-number, .label-card span, .drawer-card span, .artifact span, .hand-card span { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--silver); }
h1, h2, h3, p { position: relative; z-index: 1; margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 600; line-height: .92; letter-spacing: -.045em; }
h1 { max-width: 12ch; font-size: clamp(4.8rem, 12vw, 13rem); }
h2 { font-size: clamp(3rem, 7vw, 7.8rem); }
h3 { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 3rem); line-height: .95; }
p { color: currentColor; opacity: .76; line-height: 1.55; }
.lead { max-width: 45rem; font-size: clamp(1.05rem, 1.8vw, 1.55rem); color: var(--bone); }
.hero-wordmark { position: absolute; right: 3vw; bottom: -2.8vw; font-family: var(--serif); font-size: clamp(8rem, 23vw, 25rem); line-height: .7; color: rgba(242, 240, 234, .055); letter-spacing: -.08em; }
.seal-mark { position: absolute; right: 2rem; top: 2rem; z-index: 2; width: 5rem; height: 5rem; display: grid; place-items: center; border: 1px solid var(--silver); border-radius: 50%; color: var(--silver); font-family: var(--stamp); font-size: .9rem; text-align: center; transform: rotate(-12deg); }

.hero-labels { display: grid; grid-template-rows: 1.1fr .75fr 1fr; gap: 1rem; }
.label-card { padding: 1.3rem; display: flex; flex-direction: column; justify-content: space-between; min-height: 10rem; background: rgba(17, 17, 17, .74); }
.label-card.thin { min-height: 7rem; border-left: 3px solid var(--silver); }

.room-title { max-width: 64rem; align-self: end; }
.room-title.narrow { max-width: 54rem; }
.specimen-grid { display: grid; grid-template-columns: 1.1fr .9fr .75fr; grid-auto-rows: minmax(10rem, auto); gap: 1rem; align-items: stretch; }
.specimen-card { padding: 1.4rem; min-height: 18rem; background: rgba(17, 17, 17, .75); transform: translateY(4rem); opacity: .25; transition: transform 1s cubic-bezier(.19, 1, .22, 1), opacity 1s ease, border-color .5s ease; }
.specimen-card.visible { transform: translateY(0); opacity: 1; }
.specimen-card.tall { grid-row: span 2; }
.specimen-card.ledger { min-height: 9rem; grid-column: span 2; font-family: var(--mono); background: linear-gradient(90deg, rgba(216, 210, 195, .12), rgba(17, 17, 17, .86)); }
.specimen-card.square { min-height: 20rem; }
.glyph { position: absolute; right: 1rem; bottom: -.3rem; font-size: 10rem; color: rgba(5, 5, 5, .12); }

.drawer-room { grid-template-columns: .92fr 1.2fr; align-items: center; }
.dominant-card { padding: clamp(1.5rem, 4vw, 3.5rem); min-height: 70vh; display: flex; flex-direction: column; justify-content: center; gap: 2rem; }
.drawer-shelf { display: grid; gap: 1rem; transform: translateX(12vw); transition: transform 1.1s cubic-bezier(.19, 1, .22, 1); }
.drawer-shelf.open { transform: translateX(0); }
.drawer-card { min-height: 8rem; padding: 1.2rem; background: rgba(36, 36, 36, .82); border-left: 1px solid var(--silver); display: grid; grid-template-columns: 7rem 1fr 1fr; gap: 1rem; align-items: center; }
.drawer-card strong { font-family: var(--serif); font-size: 2rem; font-weight: 600; }

.archive-room { align-content: center; }
.archive-table { display: grid; grid-template-columns: 1.3fr .7fr .9fr; grid-auto-rows: minmax(13rem, auto); gap: 1rem; }
.artifact { padding: 1.25rem; background: rgba(17, 17, 17, .82); min-height: 14rem; }
.artifact.large { grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end; }
.artifact.stamp { font-family: var(--stamp); font-size: clamp(2rem, 5vw, 5rem); line-height: .85; color: var(--bone); }
.artifact.stamp span { display: block; margin-top: 1rem; font-family: var(--mono); }
.linework { background-image: repeating-linear-gradient(90deg, transparent 0 18px, rgba(184, 177, 163, .22) 19px, transparent 20px), linear-gradient(145deg, var(--charcoal), var(--graphite)); }
.shard { clip-path: polygon(0 0, 94% 0, 100% 18%, 96% 100%, 0 100%); }

.ritual-room { align-items: center; }
.ritual-table { display: grid; grid-template-columns: 1fr .62fr; gap: 1rem; width: min(100%, 78rem); margin: auto; }
.invitation-card { min-height: 34rem; padding: clamp(1.5rem, 4vw, 4rem); display: flex; flex-direction: column; justify-content: space-between; }
.engraved-link { position: relative; z-index: 1; width: fit-content; border: 1px solid var(--obsidian); padding: 1rem 1.2rem; font-family: var(--mono); text-transform: uppercase; letter-spacing: .15em; font-size: .72rem; transition: background .4s ease, color .4s ease; }
.engraved-link:hover { background: var(--obsidian); color: var(--ice); }
.hand-card { align-self: end; min-height: 18rem; padding: 1.3rem; display: flex; flex-direction: column; justify-content: flex-end; font-family: var(--mono); }

.ripple-ring { position: absolute; width: 1rem; height: 1rem; border: 1px solid rgba(242, 240, 234, .7); border-radius: 50%; left: var(--x); top: var(--y); transform: translate(-50%, -50%) scale(0); pointer-events: none; animation: ripple 1.2s ease-out forwards; mix-blend-mode: difference; }
.cursor-ripple { position: fixed; z-index: 40; width: 2rem; height: 2rem; border: 1px solid rgba(216, 210, 195, .22); border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%); opacity: 0; transition: opacity .25s ease; }

@keyframes ripple { to { transform: translate(-50%, -50%) scale(28); opacity: 0; } }
@keyframes veinCrawl { from { transform: translate3d(-2%, -1%, 0) rotate(-3deg); } to { transform: translate3d(3%, 2%, 0) rotate(2deg); } }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr; position: absolute; }
  .nav-strip, .accession { display: none; }
  .hero-room, .drawer-room, .ritual-table { grid-template-columns: 1fr; }
  .specimen-grid, .archive-table { grid-template-columns: 1fr; }
  .specimen-card.ledger, .artifact.large { grid-column: auto; grid-row: auto; }
  .drawer-card { grid-template-columns: 1fr; }
  .hero-slab { min-height: 78vh; }
}