:root {
  --paper: #f7f5ef;
  --ink: #1a1a19;
  --muted: #77756e;
  --oxide: #c8422f;
  --line: rgba(26, 26, 25, 0.22);
  --page-padding: clamp(1.5rem, 4vw, 4rem);
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.8rem;
  left: 0.8rem;
  padding: 0.6rem 0.8rem;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sheet {
  position: relative;
  display: grid;
  height: 100svh;
  grid-template-columns: clamp(5.7rem, 14vw, 12.5rem) 1fr;
  grid-template-rows: auto 1fr auto;
  gap: 1px 0;
  padding: var(--page-padding);
  overflow: hidden;
}

.sheet::before {
  position: absolute;
  inset: clamp(1.5rem, 3vw, 3rem);
  border: 2px solid var(--ink);
  content: "";
  pointer-events: none;
}

.sheet::after {
  position: absolute;
  z-index: 0;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.78' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='.7'/%3E%3C/svg%3E");
  content: "";
  pointer-events: none;
}

.masthead {
  grid-column: 1 / -1;
  position: relative;
  z-index: 1;
  padding: 0 0 clamp(1rem, 3vh, 2rem);
}

.masthead__index,
.footer,
.entry__content small {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

.masthead__index {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.spine {
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  grid-row: 2;
  padding: 1rem 0 2rem;
  font-size: min(8.5svh, clamp(2.8rem, 8vw, 8.5rem));
  font-weight: 800;
  line-height: 0.84;
  letter-spacing: -0.11em;
}

.spine i {
  display: block;
  width: clamp(1.7rem, 4vw, 4rem);
  aspect-ratio: 1;
  margin-top: clamp(1rem, 2.5vh, 2rem);
  background: var(--oxide);
}

.edition-mark {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: calc(var(--page-padding) + 0.45rem);
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: clamp(0.54rem, 0.75vw, 0.68rem);
  letter-spacing: 0.04em;
  writing-mode: vertical-rl;
  transform: translateY(-50%);
}

.collection {
  z-index: 1;
  display: grid;
  align-content: center;
  grid-column: 2;
  grid-row: 2;
  padding: clamp(0.75rem, 2vh, 1.5rem) clamp(1rem, 6vw, 8rem);
}

.collection__list {
  display: grid;
  gap: clamp(1.5rem, 4vh, 3rem);
  max-width: 44rem;
  padding: 0;
  margin: 0 auto;
  list-style: none;
}

.entry__link {
  display: grid;
  grid-template-columns: minmax(3rem, 4.8rem) 1px minmax(0, 1fr) auto;
  gap: clamp(0.8rem, 2vw, 1.5rem);
  align-items: center;
  text-decoration: none;
}

a.entry__link { transition: transform 180ms cubic-bezier(0.23, 1, 0.32, 1); }
a.entry__link:hover { transform: translateX(0.55rem); }
a.entry__link:focus-visible {
  outline: 3px solid var(--oxide);
  outline-offset: 0.55rem;
}

.entry__number {
  font-size: clamp(2.65rem, 5vw, 5rem);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.08em;
  transition: color 180ms cubic-bezier(0.23, 1, 0.32, 1);
}

.entry__rule {
  width: 1px;
  height: clamp(3.3rem, 5vw, 5rem);
  background: var(--ink);
}

.entry__content { display: grid; gap: 0.45rem; }
.entry__content strong {
  font-size: clamp(1.7rem, 3.2vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
}

.entry__content small {
  color: var(--muted);
  font-size: clamp(0.62rem, 1vw, 0.75rem);
  line-height: 1.35;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.entry__arrow {
  font-size: 1.5rem;
  line-height: 1;
  opacity: 0;
  transition: opacity 180ms cubic-bezier(0.23, 1, 0.32, 1);
}

a.entry__link:hover .entry__arrow,
a.entry__link:focus-visible .entry__arrow { opacity: 1; }
a.entry__link:hover .entry__number,
a.entry__link:focus-visible .entry__number { color: var(--oxide); }

.entry--coming-soon { color: var(--muted); }
.entry--coming-soon .entry__rule { background: var(--line); }
.entry--coming-soon .entry__content strong { font-weight: 500; }

.footer {
  z-index: 1;
  display: flex;
  justify-content: space-between;
  grid-column: 1 / -1;
  gap: 1rem;
  padding-top: 1.25rem;
  font-size: 0.68rem;
  letter-spacing: 0.02em;
}

.footer p { margin: 0; }
.footer a { text-underline-offset: 0.25em; }
.footer a:focus-visible { outline: 2px solid var(--oxide); outline-offset: 0.35rem; }

.registration {
  position: absolute;
  z-index: 2;
  width: 1.5rem;
  height: 1.5rem;
  pointer-events: none;
}

.registration::before,
.registration::after {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--ink);
  content: "";
  transform: translate(-50%, -50%);
}

.registration::before { width: 1.5rem; height: 1px; }
.registration::after { width: 1px; height: 1.5rem; }
.registration--top { top: clamp(1.1rem, 2vw, 2rem); left: 50%; }
.registration--right { top: 50%; right: clamp(1.1rem, 2vw, 2rem); }
.registration--bottom { bottom: clamp(1.1rem, 2vw, 2rem); left: 50%; }
.registration--left { top: 50%; left: clamp(1.1rem, 2vw, 2rem); }

@media (max-width: 640px) {
  .sheet {
    grid-template-columns: 3.6rem 1fr;
    padding: 1.25rem;
  }

  .sheet::before { inset: 1rem; }
  .masthead { padding-bottom: 1rem; }
  .masthead__index { font-size: 0.59rem; }
  .spine { font-size: min(6.2svh, 2.7rem); padding-bottom: 0.5rem; }
  .spine i { width: 1.5rem; margin-top: 1.5rem; }
  .collection { padding: 1rem 1.1rem 1rem 0.3rem; }
  .collection__list { gap: 2.35rem; }
  .entry__link { grid-template-columns: 2.5rem 1px 1fr; gap: 0.65rem; }
  .entry__number { font-size: 2.5rem; }
  .entry__rule { height: 3rem; }
  .entry__content strong { font-size: 1.55rem; }
  .entry__content small { font-size: 0.55rem; }
  .entry__arrow { display: none; }
  .edition-mark { right: 0.85rem; font-size: 0.48rem; }
  .footer { font-size: 0.56rem; flex-direction: column; padding: 0 0 0.2rem; gap: 0.35rem; }
  .registration { transform: scale(0.75); }
}

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