:root {
  --ink: #0b0a08;
  --ink-soft: #16140f;
  --paper: #e8e0d0;
  --paper-dim: #b7ae9c;
  --brass: #c4a574;
  --brass-hot: #e6d3a8;
  --line: rgb(232 224 208 / 14%);
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;
  --tone: #c4a574;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --max: 72rem;
}

[data-tone="ember"] { --tone: #d45a32; --tone-wash: 212 90 50; }
[data-tone="fog"] { --tone: #7f9a88; --tone-wash: 127 154 136; }
[data-tone="gold"] { --tone: #dec64a; --tone-wash: 222 198 74; }
[data-tone="amber"] { --tone: #e0a21a; --tone-wash: 224 162 26; }
[data-tone="ochre"] { --tone: #c47a3a; --tone-wash: 196 122 58; }
[data-tone="vault"] { --tone: #6d8a8a; --tone-wash: 109 138 138; }
[data-tone="violet"] { --tone: #9966ff; --tone-wash: 153 102 255; }

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--paper);
  background:
    radial-gradient(ellipse at 50% -10%, rgb(196 165 116 / 12%), transparent 42rem),
    linear-gradient(180deg, #100e0b 0%, var(--ink) 18rem);
  background-color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.65;
}

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

a {
  color: var(--brass);
  text-decoration: none;
}

a:hover {
  color: var(--brass-hot);
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 40;
  padding: 0.5rem 0.8rem;
  background: var(--brass);
  color: var(--ink);
}

.skip:focus {
  top: 1rem;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--gutter);
  background: rgb(11 10 8 / 82%);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--paper-dim);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--brass-hot);
}

.hero {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(4.5rem, 14vh, 8rem) var(--gutter) 5rem;
}

.drip {
  position: absolute;
  top: 3.2rem;
  right: var(--gutter);
  width: clamp(2.4rem, 6vw, 3.6rem);
  height: auto;
  color: rgb(196 165 116 / 0.45);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: var(--gutter);
  bottom: 0;
  width: min(12rem, 40vw);
  height: 1px;
  background: linear-gradient(90deg, var(--brass), transparent);
}

.eyebrow,
.world-index,
.world-domain,
.plate-hint,
.colophon {
  font-family: var(--font-mono);
}

.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--brass);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 16ch;
  margin: 0 0 1.4rem;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 5.1rem);
  font-weight: 500;
  font-optical-sizing: auto;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.lede,
.world-lead {
  max-width: 40rem;
  color: var(--paper);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
}

.hero-invite {
  margin: 2.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.world {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vh, 6rem) var(--gutter);
  border-top: 1px solid var(--line);
}

.world.invert {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.world.invert .plate {
  order: 2;
}

.world h2 {
  margin: 0.15rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.world-index {
  margin: 0;
  color: rgb(var(--tone-wash) / 0.9);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.world-domain {
  margin: 0 0 1.15rem;
  color: var(--paper-dim);
  font-size: 0.78rem;
}

.world-copy p {
  margin: 0 0 0.95rem;
  color: var(--paper-dim);
}

.world-lead {
  color: var(--paper);
}

.world-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1.05rem;
  border: 1px solid rgb(var(--tone-wash) / 0.55);
  background: rgb(var(--tone-wash) / 0.12);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.btn:hover {
  background: rgb(var(--tone-wash) / 0.22);
  color: var(--brass-hot);
  border-color: rgb(var(--tone-wash) / 0.9);
}

.btn.ghost {
  background: transparent;
}

.btn.disabled {
  cursor: not-allowed;
  opacity: 0.55;
  border-style: dashed;
}

.plate {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid rgb(var(--tone-wash) / 0.28);
  background:
    linear-gradient(160deg, rgb(var(--tone-wash) / 0.18), transparent 46%),
    repeating-linear-gradient(
      135deg,
      rgb(232 224 208 / 3%) 0 1px,
      transparent 1px 14px
    ),
    var(--ink-soft);
}

.plate-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.7s ease;
}

.plate.has-art .plate-photo {
  opacity: 1;
}

.plate.has-art:hover .plate-photo {
  transform: scale(1.03);
}

.plate-shot .plate-photo {
  object-position: top center;
}

.plate-void {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.1rem 1.2rem;
  color: rgb(var(--tone-wash) / 0.85);
}

.plate.has-art .plate-void {
  display: none;
}

.plate-mark {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 500;
  line-height: 0.85;
  opacity: 0.28;
}

.plate-hint {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.plate-hint code {
  color: var(--paper);
}

.world.pending .plate {
  border-style: dashed;
}

.plate-svg {
  background:
    radial-gradient(ellipse at 30% 50%, rgb(255 153 0 / 0.08), transparent 42%),
    radial-gradient(ellipse at 70% 50%, rgb(153 102 255 / 0.1), transparent 46%),
    #0c1018;
}

.plate-svg .orbit-diagram {
  display: block;
  width: 100%;
  height: 100%;
  padding: 1rem 1.1rem;
}

.colophon {
  padding: 2.4rem var(--gutter) 3rem;
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-align: center;
}

.colophon p {
  margin: 0.25rem 0;
}

.fine {
  opacity: 0.7;
}

.fine code {
  color: var(--brass);
}

@media (max-width: 860px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .world,
  .world.invert {
    grid-template-columns: 1fr;
  }

  .world.invert .plate {
    order: 0;
  }
}

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

  .plate-photo,
  .plate.has-art:hover .plate-photo {
    transition: none;
    transform: none;
  }
}