:root {
  --ink: #20211d;
  --ink-soft: rgba(32, 33, 29, 0.68);
  --ink-faint: rgba(32, 33, 29, 0.38);
  --paper: #f3f0e8;
  --signal: #9b4435;
  --display: "Iowan Old Style", Baskerville, "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  min-width: 320px;
  padding: 0;
  color: var(--ink);
  background: var(--paper);
  font: 400 12px/1.55 var(--mono);
  text-rendering: optimizeLegibility;
}

button,
a {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 40;
  top: 12px;
  left: 12px;
  padding: 8px 11px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-180%);
}

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

.site-frame {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--paper);
  border-radius: 0;
}

.world,
.world canvas,
.world #three-background,
.world #three-foreground,
.world-grid,
.world-grain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.world {
  z-index: 0;
  overflow: hidden;
  background: var(--paper);
}

#three-background {
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  mix-blend-mode: multiply;
}

#three-background canvas,
#three-foreground canvas {
  display: block;
  opacity: 0.94;
}

#ascii-world {
  z-index: 2;
  display: block;
  pointer-events: none;
}

#three-foreground {
  z-index: 3;
  overflow: hidden;
  pointer-events: none;
  mix-blend-mode: multiply;
}

.world-grid {
  z-index: 4;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    transparent calc(78% - 0.5px),
    rgba(32, 33, 29, 0.11) 78%,
    transparent calc(78% + 0.5px)
  );
}

.world-grid::before {
  content: "";
  position: absolute;
  top: 8.5%;
  right: 0;
  left: 0;
  height: 8px;
  opacity: 0.3;
  background:
    linear-gradient(
      90deg,
      transparent calc(8% - 0.5px),
      rgba(32, 33, 29, 0.38) 8%,
      transparent calc(8% + 0.5px)
    ),
    linear-gradient(
      90deg,
      transparent calc(32% - 0.5px),
      rgba(32, 33, 29, 0.38) 32%,
      transparent calc(32% + 0.5px)
    ),
    linear-gradient(
      90deg,
      transparent calc(56% - 0.5px),
      rgba(32, 33, 29, 0.38) 56%,
      transparent calc(56% + 0.5px)
    ),
    linear-gradient(
      90deg,
      transparent calc(80% - 0.5px),
      rgba(32, 33, 29, 0.38) 80%,
      transparent calc(80% + 0.5px)
    );
}

.world-grain {
  z-index: 5;
  opacity: 0.15;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(32, 33, 29, 0.016) 0 1px,
    transparent 1px 6px
  );
}

.column-grid {
  position: absolute;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1.55fr repeat(3, minmax(120px, 1fr));
  gap: clamp(26px, 5vw, 86px);
  align-items: start;
  padding: clamp(30px, 5vh, 48px) clamp(28px, 4.2vw, 68px);
  background: linear-gradient(
    180deg,
    rgba(243, 240, 232, 0.9) 0,
    rgba(243, 240, 232, 0.62) 60%,
    rgba(243, 240, 232, 0) 100%
  );
}

.identity h1 {
  margin-bottom: 14px;
  font: 400 clamp(2rem, 3vw, 2.8rem)/0.95 var(--display);
  letter-spacing: -0.055em;
}

.identity h1 a {
  text-decoration: none;
}

.identity p {
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.65;
}

.identity > span {
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.column h2 {
  margin-bottom: 11px;
  font: 400 clamp(1.08rem, 1.6vw, 1.45rem)/1 var(--display);
  letter-spacing: -0.025em;
}

.column button,
.column a,
.column p {
  display: block;
  width: fit-content;
  margin-bottom: 4px;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.45;
}

.column a {
  text-decoration: none;
}

.column button {
  appearance: none;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.column button:hover,
.column a:hover,
.column button[aria-pressed="true"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: rgba(32, 33, 29, 0.35);
  text-underline-offset: 4px;
}

.open-column {
  padding-top: 1px;
}

.open-column .open-entry {
  display: flex;
  width: min(150px, 100%);
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--ink);
  font: 400 clamp(1.08rem, 1.6vw, 1.45rem)/1 var(--display);
  letter-spacing: -0.025em;
}

.open-column .open-entry span:last-child {
  color: var(--signal);
  font: 400 11px/1 var(--mono);
  transition: transform 160ms ease;
}

.open-column .open-entry:hover {
  text-decoration: none;
}

.open-column .open-entry:hover span:first-child {
  text-decoration: underline;
  text-decoration-color: rgba(32, 33, 29, 0.35);
  text-underline-offset: 4px;
}

.open-column .open-entry:hover span:last-child {
  transform: translateX(4px);
}

.open-column p {
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.letter-preview {
  position: absolute;
  z-index: 15;
  right: clamp(28px, 4.2vw, 68px);
  bottom: clamp(32px, 5.5vh, 58px);
  width: min(440px, 42vw);
  padding: 14px 0 0;
  background: linear-gradient(
    90deg,
    rgba(243, 240, 232, 0.9),
    rgba(243, 240, 232, 0.62)
  );
  border-top: 1px solid rgba(32, 33, 29, 0.28);
}

.letter-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 13px;
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.letter-preview pre {
  min-height: 46px;
  color: var(--signal);
  font: 400 clamp(0.66rem, 0.9vw, 0.8rem)/1.6 var(--mono);
  white-space: pre-wrap;
}

@media (max-width: 800px) {
  .column-grid {
    grid-template-columns: 1.35fr repeat(3, 1fr);
    gap: 22px;
    padding-right: 26px;
    padding-left: 26px;
  }

  .identity p,
  .column button,
  .column a,
  .column p {
    font-size: 9px;
  }

  .letter-preview {
    right: 26px;
    width: min(390px, 58vw);
  }
}

@media (max-width: 600px) {
  body {
    padding: 0;
  }

  .site-frame {
    border-radius: 0;
  }

  #three-background canvas,
  #three-foreground canvas {
    opacity: 0.86;
  }

  .column-grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 18px 28px;
    padding: 24px 20px 72px;
  }

  .about-column {
    display: none;
  }

  .site-column {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto repeat(3, 1fr);
    gap: 12px;
    align-items: baseline;
    padding-top: 10px;
    border-top: 1px solid rgba(32, 33, 29, 0.18);
  }

  .site-column h2,
  .site-column button,
  .site-column a {
    margin: 0;
  }

  .letter-preview {
    right: 20px;
    bottom: 24px;
    left: 20px;
    width: auto;
  }
}

/* Field notebook pass ---------------------------------------------------- */

.world-grid {
  z-index: 5;
}

.world-grain {
  z-index: 6;
}

.field-readout {
  left: 44%;
  width: min(320px, 30vw);
  text-align: left;
}

.field-panel {
  width: clamp(210px, 18vw, 270px);
  padding: 0;
  background: transparent;
  border: 0;
  backdrop-filter: none;
}

.trail-panel {
  top: clamp(220px, 31vh, 292px);
  left: clamp(28px, 4.4vw, 70px);
}

.letters-panel {
  top: clamp(178px, 25vh, 240px);
  right: clamp(28px, 4.4vw, 70px);
}

.field-panel-head {
  padding: 9px 0 11px;
  border-top: 1px solid rgba(32, 33, 29, 0.24);
  border-bottom: 1px solid rgba(32, 33, 29, 0.12);
}

.field-panel-head > span {
  padding-top: 3px;
}

.field-panel-head h2 {
  font-size: 1.25rem;
}

.field-route-list {
  padding-top: 8px;
}

.field-route-list::before {
  top: 24px;
  bottom: 25px;
  background: rgba(32, 33, 29, 0.13);
}

.field-route-list li {
  padding: 9px 0;
}

.field-route-list strong,
.field-letter-list strong {
  font-size: 0.93rem;
}

.field-letter-list button {
  padding: 10px 0;
}

.field-letter-list button:last-child {
  border-bottom: 0;
}

.field-next-letter {
  padding-top: 9px;
  border-top: 1px solid rgba(32, 33, 29, 0.12);
}

.field-letter {
  bottom: clamp(78px, 10.5vh, 106px);
  width: min(420px, 35vw);
  background: linear-gradient(90deg, transparent, rgba(243, 240, 232, 0.7), transparent);
}

.field-footer {
  background: linear-gradient(180deg, rgba(243, 240, 232, 0.28), rgba(243, 240, 232, 0.92));
  border-top-color: rgba(32, 33, 29, 0.1);
}

@media (max-width: 760px) {
  .field-readout {
    left: 50%;
    width: 80vw;
    text-align: center;
  }

  .field-panel {
    width: auto;
    padding: 17px;
    background: rgba(243, 240, 232, 0.94);
    border: 1px solid rgba(32, 33, 29, 0.18);
    backdrop-filter: blur(10px);
  }

  .trail-panel,
  .letters-panel {
    top: 112px;
    right: 18px;
    bottom: 66px;
    left: 18px;
  }
}

/* One-field interface ---------------------------------------------------- */

.field-header {
  position: absolute;
  z-index: 24;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  padding: clamp(26px, 4.5vh, 44px) clamp(26px, 4vw, 62px) 72px;
  background: linear-gradient(180deg, rgba(243, 240, 232, 0.94), rgba(243, 240, 232, 0.72) 58%, transparent);
}

.field-nav {
  display: flex;
  gap: clamp(14px, 2vw, 28px);
  justify-content: flex-end;
  padding-top: 5px;
}

.field-nav a,
.field-nav button {
  appearance: none;
  padding: 0;
  color: var(--ink-soft);
  border: 0;
  background: none;
  font-size: 9px;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
}

.field-footer-link {
  color: inherit;
  text-decoration: none;
}

.field-footer-link:hover {
  color: var(--signal);
}

.field-nav a:hover,
.field-nav button:hover {
  color: var(--ink);
}

.field-readout {
  position: absolute;
  z-index: 12;
  top: clamp(120px, 17vh, 174px);
  left: 50%;
  width: min(330px, 32vw);
  text-align: center;
  transform: translateX(-50%);
}

.field-readout h2 {
  margin: 0;
  font: 400 clamp(1.65rem, 2.6vw, 2.7rem)/0.95 var(--display);
  letter-spacing: -0.05em;
}

.field-panel {
  position: absolute;
  z-index: 18;
  top: clamp(155px, 23vh, 220px);
  width: clamp(220px, 20vw, 294px);
  padding: 17px;
  background: rgba(243, 240, 232, 0.72);
  border: 1px solid rgba(32, 33, 29, 0.16);
  backdrop-filter: blur(8px);
}

.trail-panel {
  left: clamp(22px, 4vw, 62px);
}

.letters-panel {
  right: clamp(22px, 4vw, 62px);
}

.field-panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.18);
}

.field-panel-head p,
.field-panel-head > span,
.field-panel-foot span {
  color: var(--ink-faint);
  font-size: 7px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.field-panel-head h2 {
  margin-top: 4px;
  font: 400 1.4rem/1 var(--display);
  letter-spacing: -0.035em;
}

.panel-close {
  display: none;
}

.field-route-list {
  position: relative;
  list-style: none;
  padding: 12px 0 2px;
}

.field-route-list::before {
  content: "";
  position: absolute;
  top: 27px;
  bottom: 34px;
  left: 4px;
  width: 1px;
  background: rgba(32, 33, 29, 0.18);
}

.field-route-list li {
  position: relative;
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 0;
}

.field-route-list li.is-current {
  color: var(--signal);
}

.route-node {
  position: relative;
  z-index: 1;
  width: 7px;
  height: 7px;
  margin-top: 4px;
  background: var(--paper);
  border: 1px solid var(--signal);
  border-radius: 50%;
}

.route-node.passed {
  background: var(--ink-faint);
  border-color: transparent;
}

.route-node.queued {
  border-style: dashed;
  border-color: var(--ink-faint);
}

.field-route-list strong,
.field-letter-list strong {
  display: block;
  color: inherit;
  font: 400 0.98rem/1.1 var(--display);
}

.field-route-list small,
.field-letter-list small {
  display: block;
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 7px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.field-letter-list {
  padding: 4px 0;
}

.field-letter-list button {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  width: 100%;
  padding: 11px 0;
  color: var(--ink-soft);
  border: 0;
  border-bottom: 1px solid rgba(32, 33, 29, 0.12);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.field-letter-list button > span {
  grid-row: 1 / 3;
  color: var(--ink-faint);
  font-size: 7px;
}

.field-letter-list button[aria-pressed="true"] {
  color: var(--signal);
}

.field-letter-list button:hover strong {
  color: var(--ink);
}

.field-next-letter {
  display: flex;
  width: 100%;
  justify-content: space-between;
  padding: 10px 0 0;
  color: var(--ink-faint);
  border: 0;
  background: transparent;
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.field-letter {
  right: 50%;
  bottom: clamp(76px, 11vh, 112px);
  width: min(430px, 36vw);
  transform: translateX(50%);
}

.field-footer {
  position: absolute;
  z-index: 22;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 18px;
  align-items: center;
  min-height: 48px;
  padding: 10px clamp(22px, 4vw, 62px);
  background: rgba(243, 240, 232, 0.9);
  border-top: 1px solid rgba(32, 33, 29, 0.16);
  backdrop-filter: blur(10px);
}

.field-footer span,
.field-footer button,
.field-footer-link {
  color: var(--ink-faint);
  font-size: 7px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.field-footer-link {
  padding: 6px 9px;
  color: var(--paper);
  background: var(--ink);
}

.field-footer button {
  appearance: none;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.field-footer button:hover {
  color: var(--ink);
}

.field-footer button:last-child {
  padding: 6px 9px;
  color: var(--paper);
  background: var(--ink);
}

.record-drawer {
  position: absolute;
  z-index: 30;
  right: 0;
  bottom: 0;
  left: 0;
  height: min(54vh, 510px);
  padding: 24px clamp(26px, 4vw, 62px) 30px;
  color: var(--ink);
  background: rgba(243, 240, 232, 0.98);
  border-top: 1px solid rgba(32, 33, 29, 0.3);
  box-shadow: 0 -22px 60px rgba(32, 33, 29, 0.08);
  transform: translateY(102%);
  transition: transform 340ms cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.record-is-open .record-drawer {
  transform: translateY(0);
  pointer-events: auto;
}

.record-drawer-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.2);
}

.record-drawer-head p,
.record-drawer-grid article > span {
  color: var(--ink-faint);
  font-size: 7px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.record-drawer-head h2 {
  margin-top: 5px;
  font: 400 clamp(1.5rem, 2.5vw, 2.5rem)/1 var(--display);
  letter-spacing: -0.045em;
}

.record-drawer-head button {
  appearance: none;
  padding: 7px 0;
  color: var(--ink-soft);
  border: 0;
  background: none;
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.record-drawer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.record-drawer-grid article {
  min-height: 210px;
  padding: 22px clamp(16px, 2vw, 30px) 16px 0;
  border-right: 1px solid rgba(32, 33, 29, 0.14);
}

.record-drawer-grid article + article {
  padding-left: clamp(16px, 2vw, 30px);
}

.record-drawer-grid article:last-child {
  padding-right: 0;
  border-right: 0;
}

.record-drawer-grid h3 {
  margin: 28px 0 13px;
  font: 400 clamp(1.15rem, 1.7vw, 1.55rem)/1.05 var(--display);
  letter-spacing: -0.035em;
}

.record-drawer-grid p {
  max-width: 280px;
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.75;
}

.record-drawer-grid .record-proof {
  margin: 10px 0 0 18px;
  padding: 16px 18px 18px;
  color: var(--paper);
  background: var(--ink);
}

.record-drawer-grid .record-proof > span,
.record-drawer-grid .record-proof p {
  color: rgba(243, 240, 232, 0.62);
}

.record-drawer-grid .record-proof h3 {
  color: var(--paper);
}

@media (max-width: 1040px) {
  .field-footer {
    grid-template-columns: 1fr auto auto auto;
  }

  .field-panel {
    width: 225px;
  }

  .field-letter {
    width: min(380px, 38vw);
  }
}

@media (max-width: 760px) {
  .field-header {
    grid-template-columns: auto 1fr;
    padding: 22px 18px 70px;
  }

  .field-nav {
    gap: 15px;
  }

  .field-readout {
    top: 128px;
    width: 80vw;
  }

  .field-panel {
    z-index: 28;
    top: 112px;
    right: 18px;
    bottom: 66px;
    left: 18px;
    width: auto;
    max-height: 370px;
    opacity: 0;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
    pointer-events: none;
  }

  .field-panel.is-mobile-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .panel-close {
    display: block;
    padding: 0;
    color: var(--ink-faint);
    border: 0;
    background: none;
    font-size: 7px;
    text-transform: uppercase;
  }

  .field-letter {
    right: 18px;
    bottom: 92px;
    left: 18px;
    width: auto;
    transform: none;
  }

  .field-footer {
    grid-template-columns: 1fr auto auto;
    padding: 9px 18px;
  }

  .field-footer #restart-deer {
    display: none;
  }

  .record-drawer {
    position: fixed;
    height: calc(100svh - 18px);
    padding: 22px 18px 30px;
    overflow-y: auto;
  }

  .record-drawer-grid {
    grid-template-columns: 1fr;
  }

  .record-drawer-grid article,
  .record-drawer-grid article + article {
    min-height: 0;
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(32, 33, 29, 0.14);
  }

  .record-drawer-grid .record-proof {
    margin: 18px 0 0;
    padding: 18px;
    border-bottom: 0;
  }

  .record-drawer-grid h3 {
    margin-top: 16px;
  }
}

html.content-page,
html.content-page body {
  width: 100%;
  min-height: 100%;
  height: auto;
  overflow: auto;
}

.content-page body {
  background:
    linear-gradient(rgba(243, 240, 232, 0.93), rgba(243, 240, 232, 0.93)),
    url("./assets/de4r-field-banner-v1.png") center bottom / 100% auto fixed no-repeat,
    var(--paper);
}

.page-shell {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 38px 0 96px;
}

.page-nav {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.18);
}

.page-brand {
  font: 400 2rem/1 var(--display);
  letter-spacing: -0.05em;
  text-decoration: none;
}

.page-nav-links {
  display: flex;
  gap: 22px;
}

.page-nav-links a {
  color: var(--ink-soft);
  font-size: 10px;
  text-decoration: none;
}

.page-nav-links a:hover,
.page-nav-links a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: rgba(32, 33, 29, 0.35);
  text-underline-offset: 4px;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(220px, 0.65fr);
  gap: clamp(42px, 9vw, 120px);
  padding: clamp(74px, 12vh, 132px) 0 80px;
}

.page-kicker,
.section-number,
.status-list dt {
  color: var(--signal);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-hero h1 {
  max-width: 760px;
  margin-top: 18px;
  font: 400 clamp(3rem, 7vw, 6.8rem)/0.92 var(--display);
  letter-spacing: -0.06em;
}

.page-intro {
  align-self: end;
  max-width: 360px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.8;
}

.status-list {
  display: grid;
  gap: 14px;
  align-self: end;
}

.status-list div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.14);
}

.status-list dd {
  color: var(--ink-soft);
  font-size: 10px;
}

.page-sections {
  border-top: 1px solid rgba(32, 33, 29, 0.2);
}

.info-section,
.letter-entry {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: clamp(28px, 7vw, 92px);
  padding: 46px 0;
  border-bottom: 1px solid rgba(32, 33, 29, 0.16);
  scroll-margin-top: 30px;
}

.info-copy,
.letter-copy {
  max-width: 720px;
}

.info-copy h2,
.letter-copy h2 {
  margin-bottom: 16px;
  font: 400 clamp(1.8rem, 3.4vw, 3rem)/1 var(--display);
  letter-spacing: -0.045em;
}

.info-copy p,
.letter-copy p {
  max-width: 650px;
  margin-bottom: 14px;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.85;
}

.info-copy code {
  padding: 2px 5px;
  color: var(--ink);
  background: rgba(32, 33, 29, 0.06);
}

.letter-copy blockquote {
  max-width: 680px;
  margin-bottom: 18px;
  color: var(--signal);
  font: 400 clamp(1rem, 2vw, 1.35rem)/1.6 var(--mono);
  white-space: pre-line;
}

.page-footer {
  display: flex;
  justify-content: space-between;
  padding-top: 30px;
  color: var(--ink-faint);
  font-size: 9px;
}

.page-footer a {
  color: inherit;
  text-decoration: none;
}

.page-footer a:hover {
  color: var(--ink);
}

@media (max-width: 700px) {
  .page-shell {
    width: min(100% - 32px, 1120px);
    padding-top: 24px;
  }

  .page-nav-links {
    gap: 12px;
  }

  .page-hero {
    grid-template-columns: 1fr;
    gap: 38px;
    padding: 64px 0 54px;
  }

  .page-intro {
    align-self: auto;
  }

  .info-section,
  .letter-entry {
    grid-template-columns: 58px 1fr;
    gap: 20px;
    padding: 34px 0;
  }

  .page-footer {
    gap: 20px;
  }
}

@media (max-height: 650px) {
  .column-grid {
    padding-top: 22px;
  }

  .identity > span,
  .about-column {
    display: none;
  }

  .letter-preview {
    bottom: 20px;
  }
}

/* Open record ------------------------------------------------------------ */

html.portal-page,
html.portal-page body {
  min-height: 100%;
  height: auto;
  overflow: auto;
}

.portal-page body {
  background:
    linear-gradient(180deg, rgba(243, 240, 232, 0.98), rgba(243, 240, 232, 0.92)),
    url("./assets/de4r-field-banner-v1.png") center bottom / 100% auto fixed no-repeat,
    var(--paper);
}

.portal-shell {
  width: min(1320px, calc(100% - 64px));
  margin: 0 auto;
  padding: 30px 0 58px;
}

.portal-nav {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: minmax(180px, 1.4fr) minmax(0, 2.6fr) auto;
  gap: 34px;
  align-items: baseline;
  padding: 18px 0 20px;
  background: rgba(243, 240, 232, 0.94);
  border-bottom: 1px solid rgba(32, 33, 29, 0.2);
  backdrop-filter: blur(12px);
}

.portal-brand {
  font: 400 2.15rem/1 var(--display);
  letter-spacing: -0.055em;
  text-decoration: none;
}

.portal-index,
.portal-elsewhere {
  display: flex;
  gap: clamp(14px, 2.4vw, 34px);
}

.portal-index a,
.portal-elsewhere a {
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.portal-index a:hover,
.portal-elsewhere a:hover {
  color: var(--ink);
}

.portal-intro {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) minmax(0, 2.6fr) minmax(190px, 0.8fr);
  gap: clamp(34px, 6vw, 96px);
  min-height: 42vh;
  padding: clamp(56px, 10vh, 112px) 0 62px;
}

.portal-kicker,
.record-label,
.route-time,
.portal-state dt,
.proof-boundary span {
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.portal-title h1 {
  max-width: 480px;
  margin-top: 18px;
  font: 400 clamp(3rem, 6.4vw, 6.2rem)/0.9 var(--display);
  letter-spacing: -0.065em;
}

.portal-summary {
  align-self: end;
  max-width: 560px;
}

.portal-summary p {
  color: var(--ink-soft);
  font: 400 clamp(1rem, 1.8vw, 1.35rem)/1.55 var(--display);
}

.portal-state {
  display: grid;
  gap: 0;
  align-self: end;
}

.portal-state div {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(32, 33, 29, 0.13);
}

.portal-state dd {
  color: var(--ink-soft);
  font-size: 9px;
}

.portal-record {
  border-top: 1px solid rgba(32, 33, 29, 0.24);
}

.record-section {
  display: grid;
  grid-template-columns: minmax(180px, 1.4fr) minmax(0, 2.6fr) minmax(190px, 0.8fr);
  gap: clamp(34px, 6vw, 96px);
  padding: 48px 0 54px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.18);
  scroll-margin-top: 74px;
}

.record-heading h2 {
  margin-top: 12px;
  font: 400 clamp(1.8rem, 3.1vw, 3rem)/0.98 var(--display);
  letter-spacing: -0.045em;
}

.route-list,
.letter-list {
  list-style: none;
}

.route-item,
.letter-card {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid rgba(32, 33, 29, 0.13);
}

.route-item:last-child,
.letter-card:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.route-copy h3,
.letter-card h3 {
  margin-bottom: 7px;
  font: 400 clamp(1.08rem, 1.7vw, 1.38rem)/1.1 var(--display);
}

.route-copy p,
.letter-card p,
.record-note p,
.mechanism-step p {
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.75;
}

.route-status {
  padding: 3px 7px;
  color: var(--ink-soft);
  border: 1px solid rgba(32, 33, 29, 0.18);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.route-status.current {
  color: var(--signal);
  border-color: rgba(155, 68, 53, 0.34);
}

.record-note {
  padding-top: 2px;
}

.record-note p + p {
  margin-top: 14px;
}

.letter-card blockquote {
  grid-column: 2 / -1;
  color: var(--signal);
  font: 400 clamp(0.75rem, 1.15vw, 0.93rem)/1.7 var(--mono);
  white-space: pre-line;
}

.mechanism-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(32, 33, 29, 0.14);
  border: 1px solid rgba(32, 33, 29, 0.14);
}

.mechanism-step {
  min-height: 164px;
  padding: 20px;
  background: rgba(243, 240, 232, 0.93);
}

.mechanism-step strong {
  display: block;
  margin: 28px 0 9px;
  font: 400 1.15rem/1.1 var(--display);
}

.proof-boundary {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 164px;
  padding: 18px;
  color: var(--paper);
  background: var(--ink);
}

.proof-boundary p {
  font-size: 9px;
  line-height: 1.75;
}

.proof-boundary span {
  color: rgba(243, 240, 232, 0.54);
}

.portal-footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 0 0;
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.portal-footer a {
  color: inherit;
  text-decoration: none;
}

@media (max-width: 850px) {
  .portal-shell {
    width: min(100% - 36px, 1320px);
  }

  .portal-nav {
    grid-template-columns: 1fr auto;
  }

  .portal-index {
    display: none;
  }

  .portal-intro,
  .record-section {
    grid-template-columns: minmax(120px, 0.7fr) minmax(0, 2fr);
    gap: 32px;
  }

  .portal-state,
  .record-note,
  .proof-boundary {
    grid-column: 2;
  }
}

@media (max-width: 600px) {
  .portal-intro,
  .record-section {
    grid-template-columns: 1fr;
  }

  .portal-intro {
    min-height: 0;
    padding: 60px 0 44px;
  }

  .portal-summary,
  .portal-state,
  .record-note,
  .proof-boundary {
    grid-column: 1;
  }

  .route-item,
  .letter-card {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .route-status {
    grid-column: 2;
    width: fit-content;
  }

  .letter-card blockquote {
    grid-column: 1 / -1;
  }

  .mechanism-list {
    grid-template-columns: 1fr;
  }
}

/* Final field-notebook composition. Kept last to override legacy panels. */

.field-readout {
  left: 44%;
  width: min(320px, 30vw);
  text-align: left;
}

.field-panel {
  width: clamp(210px, 18vw, 270px);
  padding: 0;
  background: transparent;
  border: 0;
  backdrop-filter: none;
}

.trail-panel {
  top: clamp(220px, 31vh, 292px);
  left: clamp(28px, 4.4vw, 70px);
}

.letters-panel {
  top: clamp(178px, 25vh, 240px);
  right: clamp(28px, 4.4vw, 70px);
}

.field-panel-head {
  padding: 9px 0 11px;
  border-top: 1px solid rgba(32, 33, 29, 0.24);
  border-bottom: 1px solid rgba(32, 33, 29, 0.12);
}

.field-panel-head > span {
  padding-top: 3px;
}

.field-panel-head h2 {
  font-size: 1.25rem;
}

.field-route-list {
  padding-top: 8px;
}

.field-route-list::before {
  top: 24px;
  bottom: 25px;
  background: rgba(32, 33, 29, 0.13);
}

.field-route-list li {
  padding: 9px 0;
}

.field-route-list strong,
.field-letter-list strong {
  font-size: 0.93rem;
}

.field-letter-list button {
  padding: 10px 0;
}

.field-letter-list button:last-child {
  border-bottom: 0;
}

.field-next-letter {
  padding-top: 9px;
  border-top: 1px solid rgba(32, 33, 29, 0.12);
}

.field-letter {
  bottom: clamp(78px, 10.5vh, 106px);
  width: min(420px, 35vw);
  background: linear-gradient(90deg, transparent, rgba(243, 240, 232, 0.7), transparent);
}

.field-footer {
  background: linear-gradient(180deg, rgba(243, 240, 232, 0.28), rgba(243, 240, 232, 0.92));
  border-top-color: rgba(32, 33, 29, 0.1);
}

@media (max-width: 760px) {
  .field-readout {
    left: 50%;
    width: 80vw;
    text-align: center;
  }

  .field-panel {
    width: auto;
    padding: 17px;
    background: rgba(243, 240, 232, 0.94);
    border: 1px solid rgba(32, 33, 29, 0.18);
    backdrop-filter: blur(10px);
  }

  .trail-panel,
  .letters-panel {
    top: 112px;
    right: 18px;
    bottom: 66px;
    left: 18px;
  }
}