:root {
  color-scheme: light;
  --bg: #e8e0d0;
  --surface: #efe9dc;
  --surface-strong: rgba(239, 233, 220, 0.78);
  --surface-glass: rgba(239, 233, 220, 0.58);
  --surface-glass-strong: rgba(239, 233, 220, 0.72);
  --text: #2a2520;
  --muted: #7a7068;
  --line: #ddd5c5;
  --grid-line: rgba(191, 182, 166, 0.2);
  --accent: #8b1a1a;
  --accent-active: #6b1212;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;
  --max-width: 80rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: "Plus Jakarta Sans", sans-serif;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

a,
button {
  touch-action: manipulation;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.visually-hidden {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.paper-grain,
.blueprint-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.paper-grain {
  opacity: 0.06;
  filter: url(#paper-grain);
  z-index: 0;
}

.blueprint-grid {
  background-image: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(8.333% - 1px),
    var(--grid-line) calc(8.333% - 1px),
    var(--grid-line) 8.333%
  );
  z-index: 0;
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: max(28px, env(safe-area-inset-top, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  padding-bottom: max(88px, env(safe-area-inset-bottom, 0px));
  padding-left: max(20px, env(safe-area-inset-left, 0px));
}

.masthead,
.hero-block,
.portal-block,
.letter-grid,
.slideshow-block,
.closing-block {
  border-top: 1px solid var(--line);
}

.masthead {
  display: grid;
  gap: 12px;
  padding: 18px 0 20px;
}

.meta-line,
.meta-label,
.section-index,
.closing-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.meta-line,
.meta-label,
.closing-meta {
  color: var(--muted);
}

.masthead-rule {
  height: 1px;
  background: var(--line);
}

.section-index {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  row-gap: 10px;
}

.section-index a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 2px 6px;
  color: var(--muted);
}

.section-index a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 225ms var(--ease);
}

.section-index a:hover::after,
.section-index a:focus-visible::after {
  transform: scaleX(1);
}

.section-index a:hover,
.section-index a:focus-visible {
  color: var(--text);
}

.section-index a[aria-current="page"] {
  color: var(--text);
}

.section-index a[aria-current="page"]::after {
  transform: scaleX(1);
}

.hero-block {
  display: grid;
  gap: 24px;
  padding: 34px 0 64px;
  position: relative;
  overflow: clip;
}

.home-hero {
  min-height: 52dvh;
  align-items: end;
}

.page-intro {
  min-height: 28dvh;
  align-items: end;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p,
ul {
  margin: 0;
}

h1 {
  max-width: 10ch;
  font-size: clamp(3.2rem, 8vw, 6.2rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
  font-weight: 800;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.lead {
  max-width: 31rem;
  margin-top: 22px;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.hero-tag {
  margin-top: 18px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-copy {
  max-width: 54rem;
  position: relative;
  z-index: 1;
}

.archive-geometry {
  position: absolute;
  inset: 18px 0 18px 0;
  pointer-events: none;
  opacity: 0.9;
}

.archive-geometry-tight {
  inset: 10px 0 10px 0;
}

.geo {
  position: absolute;
  display: block;
}

.geo-circle {
  border: 1px solid rgba(122, 112, 104, 0.24);
  border-radius: 999px;
}

.geo-circle-large {
  top: 12%;
  right: 2%;
  width: 240px;
  height: 240px;
}

.geo-circle-medium {
  top: 18%;
  right: 4%;
  width: 168px;
  height: 168px;
}

.geo-circle-small {
  bottom: 14%;
  left: 6%;
  width: 68px;
  height: 68px;
}

.geo-rule {
  background: rgba(122, 112, 104, 0.18);
}

.geo-rule-vertical {
  top: 0;
  bottom: 12%;
  right: 21%;
  width: 1px;
}

.geo-rule-horizontal {
  top: 28%;
  left: 58%;
  right: 0;
  height: 1px;
}

.geo-rule-short {
  bottom: 24%;
  left: 0;
  width: 120px;
  height: 1px;
}

.geo-cross::before,
.geo-cross::after {
  content: "";
  position: absolute;
  background: rgba(139, 26, 26, 0.22);
}

.geo-cross::before {
  width: 18px;
  height: 1px;
  left: 0;
  top: 8px;
}

.geo-cross::after {
  width: 1px;
  height: 18px;
  left: 8px;
  top: 0;
}

.geo-cross-top {
  top: 18%;
  left: 8%;
  width: 18px;
  height: 18px;
}

.geo-cross-side {
  bottom: 16%;
  right: 11%;
  width: 18px;
  height: 18px;
}

.archive-specimen {
  position: absolute;
  top: 8%;
  right: 0;
  width: min(220px, 38vw);
  z-index: 0;
  pointer-events: none;
}

.home-hero .archive-specimen {
  top: 10%;
}

.page-intro .archive-specimen {
  top: 6%;
  width: min(180px, 34vw);
}

.archive-specimen-inner {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  padding: clamp(12px, 3vw, 22px);
  background: var(--surface-glass-strong);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.55) inset;
}

.archive-specimen-svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 14px rgba(139, 26, 26, 0.09));
}

@media (max-width: 520px) {
  .archive-specimen {
    width: min(112px, 30vw);
    top: 4%;
    opacity: 0.88;
  }

  .page-intro .archive-specimen {
    width: min(100px, 28vw);
  }
}

.letter-card,
.slideshow-panel,
.closing-panel,
.portal-card {
  background: var(--surface-glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
}

.frame-card {
  position: relative;
}

.frame-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(122, 112, 104, 0.18);
  border-radius: 4px;
  pointer-events: none;
}

.frame-card::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(221, 213, 197, 0.8);
  border-radius: 2px;
  pointer-events: none;
}

.frame-inner {
  position: relative;
  z-index: 1;
}

.panel-head,
.strip-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-count {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-heading {
  display: grid;
  gap: 10px;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}

h3 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.portal-block,
.letter-grid,
.slideshow-block,
.closing-block {
  padding: 30px 0 0;
}

.portal-block {
  display: grid;
  gap: 24px;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 10px;
}

.portal-card {
  display: grid;
  gap: 18px;
  padding: 10px;
  min-height: 172px;
  align-content: stretch;
  transition: border-color 225ms var(--ease), background 225ms var(--ease);
}

.portal-card .frame-inner {
  display: grid;
  gap: 18px;
  min-height: 100%;
  padding: 16px 14px 12px;
  align-content: space-between;
}

.portal-note {
  max-width: 18rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--muted);
}

.portal-card:hover,
.portal-card:focus-visible {
  border-color: var(--accent);
  background: rgba(239, 233, 220, 0.68);
}

.portal-arrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.letter-grid {
  display: grid;
  gap: 22px;
}

.letter-page-grid {
  align-items: start;
}

.letter-card {
  padding: 28px 26px;
  background: var(--surface-glass-strong);
}

.letter-card::before,
.closing-panel::before,
.slideshow-panel::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(221, 213, 197, 0.75);
  border-radius: 3px;
  pointer-events: none;
}

.letter-card p + p {
  margin-top: 18px;
}

.letter-card p,
.closing-line {
  font-size: 1.02rem;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.slideshow-block {
  display: grid;
  gap: 24px;
}

.slideshow-panel {
  padding: 16px;
}

.slideshow-stage {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.slide {
  position: absolute;
  inset: 0;
  display: grid;
  opacity: 0;
  pointer-events: none;
  transition: opacity 375ms var(--ease);
}

.slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.slide picture {
  display: contents;
}

.slide img {
  height: 100%;
  object-fit: cover;
}

.slide figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  background: rgba(232, 224, 208, 0.64);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
}

.slide figcaption p {
  max-width: 24rem;
  line-height: 1.7;
}

.slideshow-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
}

.slide-button {
  border: 1px solid var(--line);
  background: var(--surface-glass);
  color: var(--text);
  backdrop-filter: blur(12px);
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 225ms var(--ease), color 225ms var(--ease),
    border-color 225ms var(--ease);
}

.slide-dot {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 225ms var(--ease);
}

.slide-dot::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  box-sizing: border-box;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  transition: background 225ms var(--ease), border-color 225ms var(--ease),
    transform 225ms var(--ease);
}

.slide-button:hover,
.slide-button:focus-visible {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.slide-dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.slide-dot.is-active::before {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.1);
}

.slide-dot.is-active {
  transform: none;
}

.slide-dot:hover::before,
.slide-dot:focus-visible::before {
  border-color: var(--accent);
}

.slide-dot:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.crop-portrait-center {
  object-position: center 24%;
}

.crop-portrait-top {
  object-position: center 14%;
}

.crop-top-center {
  object-position: center 18%;
}

.crop-upper-center {
  object-position: center 22%;
}

.crop-upper-right {
  object-position: 68% 18%;
}

.crop-center-left {
  object-position: 38% 42%;
}

.closing-block {
  display: grid;
  gap: 24px;
}

.closing-panel {
  max-width: 46rem;
  padding: 28px 26px;
  background: var(--surface-glass-strong);
}

.closing-line {
  max-width: 30rem;
  font-size: 1.18rem;
  line-height: 1.8;
}

.closing-line-secondary {
  margin-top: 20px;
}

.closing-meta {
  margin-top: 22px;
}

@media (min-width: 720px) {
  .page-shell {
    padding: 34px 28px 96px;
  }

  .masthead {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

  .masthead-rule {
    grid-column: 1 / -1;
  }

  .section-index {
    justify-content: flex-start;
  }

  .hero-block {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

  .home-hero,
  .page-intro {
    align-items: end;
  }

  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .portal-card {
    min-height: 190px;
    padding: 10px;
  }

  .portal-card .frame-inner {
    padding: 18px 16px 14px;
  }

  .slideshow-stage {
    min-height: 620px;
  }

  .closing-panel {
    margin-left: auto;
  }
}

@media (max-width: 719px) {
  .page-shell {
    padding-top: max(22px, env(safe-area-inset-top, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
    padding-bottom: max(72px, env(safe-area-inset-bottom, 0px));
    padding-left: max(16px, env(safe-area-inset-left, 0px));
  }

  .masthead {
    gap: 10px;
    padding: 14px 0 16px;
  }

  .meta-line,
  .meta-label,
  .section-index,
  .closing-meta,
  .portal-arrow,
  .panel-count {
    font-size: 0.68rem;
  }

  .section-index {
    gap: 10px 14px;
  }

  .hero-block {
    gap: 18px;
    padding: 26px 0 40px;
  }

  .home-hero {
    min-height: 42dvh;
  }

  .page-intro {
    min-height: auto;
  }

  .archive-geometry {
    inset: 8px 0 8px 0;
    opacity: 0.72;
  }

  .geo-circle-large {
    width: 138px;
    height: 138px;
    top: 6%;
    right: -10px;
  }

  .geo-circle-medium {
    width: 104px;
    height: 104px;
    top: 12%;
    right: 0;
  }

  .geo-circle-small {
    width: 42px;
    height: 42px;
    left: auto;
    right: 26%;
    bottom: 8%;
  }

  .geo-rule-vertical {
    right: 14%;
    bottom: 18%;
  }

  .geo-rule-horizontal {
    left: 44%;
    top: 22%;
  }

  .geo-rule-short {
    width: 72px;
    bottom: 16%;
  }

  .geo-cross-top {
    left: 2%;
    top: 8%;
  }

  .geo-cross-side {
    right: 6%;
    bottom: 10%;
  }

  .blueprint-grid {
    background-image: repeating-linear-gradient(
      to right,
      transparent 0,
      transparent calc(25% - 1px),
      var(--grid-line) calc(25% - 1px),
      var(--grid-line) 25%
    );
  }

  h1 {
    max-width: 9.5ch;
    font-size: clamp(2.5rem, 14vw, 4.1rem);
    line-height: 0.94;
  }

  h2 {
    font-size: clamp(1.55rem, 7vw, 2.1rem);
  }

  h3 {
    font-size: 1.28rem;
  }

  .lead {
    margin-top: 16px;
    max-width: 100%;
    font-size: 0.96rem;
    line-height: 1.72;
  }

  .portal-block,
  .letter-grid,
  .slideshow-block,
  .closing-block {
    padding-top: 22px;
  }

  .portal-grid,
  .letter-grid,
  .slideshow-block,
  .closing-block {
    gap: 14px;
  }

  .portal-card {
    min-height: 132px;
    padding: 8px;
  }

  .portal-card .frame-inner {
    gap: 14px;
    padding: 12px 10px 10px;
  }

  .portal-note {
    font-size: 0.86rem;
    line-height: 1.45;
  }

  .letter-card,
  .slideshow-panel,
  .closing-panel {
    padding-left: 14px;
    padding-right: 14px;
  }

  .letter-card {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .letter-card p,
  .closing-line {
    font-size: 0.96rem;
    line-height: 1.72;
  }

  .slideshow-panel {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .slideshow-stage {
    min-height: 62svh;
  }

  .slide figcaption {
    left: 10px;
    right: 10px;
    bottom: 10px;
    padding: 11px 12px;
    gap: 6px;
  }

  .slide figcaption p {
    max-width: 100%;
    font-size: 0.9rem;
    line-height: 1.55;
  }

  .panel-head,
  .strip-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .slideshow-controls {
    align-items: stretch;
    gap: 8px;
    padding-top: 12px;
  }

  .slide-dots {
    flex: 1;
    gap: 6px;
  }

  .slide-button {
    min-width: 76px;
    padding: 12px 10px;
  }

  .slide-dot::before {
    width: 10px;
    height: 10px;
    margin: -5px 0 0 -5px;
  }

  .frame-card::before {
    inset: 6px;
  }

  .frame-card::after {
    inset: 10px;
  }

  .letter-card::before,
  .closing-panel::before,
  .slideshow-panel::before {
    inset: 8px;
  }

  .closing-panel {
    padding-top: 20px;
    padding-bottom: 20px;
  }

  .closing-line {
    max-width: 100%;
  }

  .closing-line-secondary {
    margin-top: 16px;
  }

  .closing-meta {
    margin-top: 18px;
  }
}

@media (min-width: 1100px) {
  .home-hero {
    min-height: 50dvh;
  }

  .hero-copy {
    max-width: 50rem;
  }

  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .portal-card {
    min-height: 198px;
  }

  .geo-circle-large {
    width: 220px;
    height: 220px;
    right: 0;
    top: 10%;
  }

  .geo-rule-horizontal {
    left: 70%;
  }

}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}