/* Sections below the hero: ledger, features with their artifacts, gallery showcase, commands, install, outro. */

.ledger,
.features,
.showcase,
.commands,
.install,
.outro {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--margin);
}

/* ---------- Ledger ---------- */

.ledger { padding-top: var(--space-5); }
.ledger-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.ledger-list > div {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2) 0 0;
}
.ledger-list > div + div { padding-left: var(--space-2); border-left: 1px solid var(--line); }
.ledger-list dt { font-size: var(--step-small); line-height: 1.35; color: var(--text-quiet); max-width: 16ch; }
.ledger-list dd {
  font-size: var(--step-3);
  font-weight: 560;
  letter-spacing: -.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 960px) {
  .ledger-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ledger-list > div:nth-child(4) { padding-left: 0; border-left: 0; }
  .ledger-list > div:nth-child(n + 4) { margin-top: var(--space-3); border-top: 1px solid var(--line); }
}
@media (max-width: 520px) {
  .ledger-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ledger-list > div:nth-child(n) { padding-left: 0; border-left: 0; }
  .ledger-list > div:nth-child(even) { padding-left: var(--space-2); border-left: 1px solid var(--line); }
  .ledger-list > div:nth-child(n + 3) { margin-top: var(--space-3); border-top: 1px solid var(--line); }
}

/* ---------- Features: sticky index on the left, exhibits on the right ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  margin-top: var(--section-gap);
}
.features-aside {
  grid-column: 1 / span 4;
  align-self: start;
  position: sticky;
  top: 7rem;
}
.feature-index {
  margin-top: var(--space-5);
  border-top: 1px solid var(--line);
}
.feature-index a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  min-height: 48px;
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--step-1);
  font-weight: 560;
  letter-spacing: -.02em;
  color: var(--text-quiet);
  text-decoration: none;
  transition: color var(--dur-moderate) var(--ease-standard);
}
.feature-index a span {
  font: 500 var(--step-label)/1 var(--font-mono);
  color: var(--text-quiet);
  transition: color var(--dur-moderate) var(--ease-standard);
}
.feature-index a:hover,
.feature-index a[aria-current="true"] { color: var(--text); }
.feature-index a[aria-current="true"] span { color: var(--light); }

.exhibits {
  grid-column: 6 / -1;
  display: grid;
  gap: var(--space-8);
  padding-top: var(--space-6);
}
.exhibit-label {
  display: flex;
  gap: .75rem;
  font: 500 var(--step-label)/1.4 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.exhibit-label span { color: var(--light); }
.exhibit-title {
  margin-top: var(--space-2);
  max-width: 20ch;
  font-size: var(--step-3);
  font-weight: 620;
  line-height: 1.08;
  letter-spacing: -.026em;
  text-wrap: balance;
}
.exhibit-text {
  margin-top: var(--space-3);
  max-width: 58ch;
  color: var(--text-soft);
  text-wrap: pretty;
}
.exhibit-text code, .step-note code, .install-pair code {
  font-size: .88em;
  color: var(--text);
}

.artifact {
  margin-top: var(--space-4);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background: linear-gradient(180deg, var(--surface), oklch(.165 .012 255));
}

.artifact-head {
  display: flex;
  justify-content: space-between;
  padding: .8rem 1.25rem;
  border-bottom: 1px solid var(--line);
  font: 500 var(--step-label)/1.4 var(--font-mono);
  color: var(--text-soft);
}
.artifact-head span + span { color: var(--text-quiet); }
.artifact-code {
  padding: 1.25rem;
  overflow-x: auto;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--text-soft);
}
.artifact-code .code-key { color: var(--text); font-weight: 500; }
.artifact-code em { font-style: normal; color: var(--light); }
.artifact-foot {
  padding: 1rem 1.25rem 1.15rem;
  border-top: 1px solid var(--line);
  font-size: var(--step-small);
  color: var(--text-quiet);
}

.rule-sheet li,
.build-order li {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) 2fr;
  gap: var(--space-2);
  padding: .95rem 1.25rem;
  font-size: var(--step-small);
}
.rule-sheet li + li,
.build-order li + li { border-top: 1px solid var(--line); }
.rule-sheet li span:first-child { color: var(--text-quiet); }
.rule-sheet li span:last-child { font-family: var(--font-mono); font-size: .84rem; color: var(--text); }

.build-order { counter-reset: step; }
.build-order li { grid-template-columns: 2.5rem 1fr; align-items: baseline; }
.build-order li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font: 500 var(--step-label)/1 var(--font-mono);
  color: var(--light);
}
.build-order li span { font-weight: 560; }
.build-order li small {
  grid-column: 2;
  margin-top: -.6rem;
  font-size: var(--step-small);
  color: var(--text-quiet);
}

.artifact-motion { padding: 1rem; }
.artifact-tile {
  overflow: hidden;
  height: clamp(180px, 18vw, 240px);
  border-radius: var(--radius-tile);
}
.artifact-tile .tile-stage { height: 100%; }
.artifact-tile-note {
  margin-top: .75rem;
  font: 400 var(--step-label)/1.5 var(--font-mono);
  color: var(--text-quiet);
}
.token-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--line);
}
.token-row dt { font-size: var(--step-label); color: var(--text-quiet); text-transform: uppercase; letter-spacing: .08em; font-family: var(--font-mono); }
.token-row dd { margin-top: .35rem; font: 400 .84rem/1.45 var(--font-mono); color: var(--text); }

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: .5rem;
}
.check-grid li {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .7rem .75rem;
  border-radius: 8px;
  font-size: var(--step-small);
  color: var(--text-soft);
}
.check-grid b {
  flex: none;
  width: 3.2rem;
  font: 500 .8rem/1 var(--font-mono);
  color: var(--light);
}

.artifact-review { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); }
.critic-list { counter-reset: critic; padding: 1rem 1.25rem; border-right: 1px solid var(--line); }
.critic-list li {
  display: flex;
  gap: .75rem;
  padding: .5rem 0;
  font-size: var(--step-small);
  color: var(--text-soft);
}
.critic-list li::before {
  counter-increment: critic;
  content: counter(critic);
  font: 500 var(--step-label)/1.6 var(--font-mono);
  color: var(--text-quiet);
}
.finding { padding: 1rem 1.25rem 1.25rem; }
.finding-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font: 500 var(--step-label)/1.4 var(--font-mono);
  color: var(--text-quiet);
}
.finding-class {
  padding: .15rem .55rem;
  border-radius: var(--radius-pill);
  background: oklch(.68 .14 50 / .18);
  color: oklch(.84 .09 55);
}
.finding dl { display: grid; gap: .9rem; margin-top: 1rem; }
.finding dt { font: 500 var(--step-label)/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-quiet); }
.finding dd { margin-top: .2rem; font-size: var(--step-small); color: var(--text); }

@media (max-width: 960px) {
  .features { display: block; }
  .features-aside { position: static; }
  .feature-index { display: none; }
  .exhibits { gap: var(--space-7); padding-top: var(--space-6); }
}
@media (max-width: 600px) {
  .rule-sheet li { grid-template-columns: 1fr; gap: .25rem; }
  .check-grid { grid-template-columns: 1fr; }
  .token-row { grid-template-columns: 1fr; }
  .artifact-review { grid-template-columns: 1fr; }
  .critic-list { border-right: 0; border-bottom: 1px solid var(--line); }
}

/* ---------- Gallery showcase ---------- */

.showcase { margin-top: var(--section-gap); }
.showcase-head .section-title { max-width: 16ch; }

.show-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: clamp(150px, 13vw, 196px);
  grid-auto-flow: dense;
  gap: 8px;
  margin-top: var(--space-6);
}
.show-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius-tile);
  background: var(--bg-deep);
}
.show-tile[data-format="2x1"], .show-tile[data-format="2x2"] { grid-column: span 2; }
.show-tile[data-format="1x2"], .show-tile[data-format="2x2"] { grid-row: span 2; }
.show-tile .tile-stage { flex: 1 1 0; min-height: 0; }
/* Stage light, as in the gallery: the tile under the pointer stays lit, the others recede. */
.show-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 4;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-standard);
}
@media (hover: hover) {
  .show-grid:has(.show-tile:hover) .show-tile:not(:hover)::after { opacity: .45; }
}
.tile-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 4px 12px 11px;
}
.tile-name { font-size: .84rem; font-weight: 600; letter-spacing: -.01em; line-height: 1.25; }
.tile-kind { font: 500 11px/15px var(--font-mono); color: oklch(.66 .012 255); }

.showcase-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.category-list { display: flex; flex-wrap: wrap; gap: .4rem; }
.category-list li {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 34px;
  padding: 0 .85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: .84rem;
  color: var(--text-soft);
}
.category-list span { font: 500 11px/1 var(--font-mono); color: var(--text-quiet); }
.showcase-foot .button { flex: none; }

@media (max-width: 960px) {
  .show-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-rows: clamp(140px, 22vw, 190px); }
  .showcase-foot { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .show-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 150px; }
  .show-tile[data-format="1x2"] { grid-row: span 2; }
  .show-tile:nth-child(n + 11) { display: none; }
}

/* ---------- Commands ---------- */

.commands {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  margin-top: var(--section-gap);
}
.commands-head { grid-column: 1 / span 4; align-self: start; position: sticky; top: 7rem; }
.command-gloss { display: block; margin-top: .3rem; font: 400 .75rem/1.3 var(--font-mono); color: var(--text-quiet); }
.command-list { grid-column: 6 / -1; border-top: 1px solid var(--line); }
.command {
  display: grid;
  grid-template-columns: minmax(11rem, 1fr) 2fr;
  gap: var(--space-3);
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}
.command dt code {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
}
.command dd p { color: var(--text-soft); font-size: var(--step-small); text-wrap: pretty; }
.command-args {
  display: inline-block;
  margin-top: .45rem;
  font-size: .78rem;
  color: var(--text-quiet);
}
.command:hover dt code { color: var(--light); }

@media (max-width: 960px) {
  .commands { display: block; }
  .commands-head { position: static; }
  .command-list { margin-top: var(--space-5); }
}
@media (max-width: 600px) {
  .command { grid-template-columns: 1fr; gap: .4rem; }
}

/* ---------- Install ---------- */

.install { margin-top: var(--section-gap); }
.install-body {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: var(--space-4);
  margin-top: var(--space-6);
}

.product-card {
  grid-column: 1 / span 5;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(110% 70% at 50% -10%, oklch(.82 .13 78 / .12), transparent 70%),
    linear-gradient(180deg, var(--surface-raised), var(--surface));
}
.product-top { display: flex; justify-content: space-between; align-items: center; }
.product-mark { --mark-lit: var(--light); width: 34px; height: 34px; fill: var(--line-strong); }
.product-version { font: 500 var(--step-label)/1 var(--font-mono); color: var(--text-quiet); }
.product-name {
  margin-top: var(--space-5);
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1;
}
.product-kind { margin-top: .4rem; color: var(--text-soft); }
.product-price {
  margin-top: var(--space-4);
  font-size: var(--step-3);
  font-weight: 620;
  letter-spacing: -.03em;
  color: var(--light);
}
.product-licence { margin-top: .2rem; font-size: var(--step-small); color: var(--text-quiet); }
.product-includes {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  display: grid;
  gap: .5rem;
  font-size: var(--step-small);
  color: var(--text-soft);
}
.product-includes li { display: flex; gap: .7rem; }
.product-includes li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: .55em;
  border-radius: 1.5px;
  background: var(--light);
}
.product-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: auto; padding-top: var(--space-4); }

.install-steps { grid-column: 7 / -1; }
.tabs {
  display: inline-flex;
  gap: .25rem;
  padding: .25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
}
.tab {
  min-height: 40px;
  padding: 0 1.1rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: none;
  font-size: var(--step-small);
  font-weight: 560;
  color: var(--text-soft);
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { background: var(--surface-raised); color: var(--text); }
.tab-note { font: 400 11px/1 var(--font-mono); color: var(--text-quiet); margin-left: .3rem; }

.tab-panel { margin-top: var(--space-4); }
.step-label {
  margin-top: var(--space-3);
  font: 500 var(--step-label)/1.4 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-quiet);
}
.tab-panel > .step-label:first-child { margin-top: 0; }
.code-block {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-top: .6rem;
  padding: 1rem 1rem 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-deep);
}
.code-block pre {
  flex: 1;
  min-width: 0;
  padding-top: .4rem;
  overflow-x: auto;
  font-size: .86rem;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: normal;
}
.code-block code { color: var(--text); }
.copy-button {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  flex: none;
  min-height: 36px;
  padding: 0 .8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  font: 500 var(--step-label)/1 var(--font-mono);
  color: var(--text-soft);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.copy-button:hover { border-color: var(--line-strong); color: var(--text); }
.copy-button.is-done { border-color: var(--light); color: var(--light); }
.step-note { margin-top: .6rem; font-size: var(--step-small); color: var(--text-quiet); }
.install-pair {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  max-width: 60ch;
  font-size: var(--step-small);
  color: var(--text-soft);
}
.install-pair strong { color: var(--text); font-weight: 600; }

@media (max-width: 600px) {
  .code-block { flex-direction: column; gap: .5rem; }
  .code-block pre { width: 100%; padding-top: 0; font-size: .8rem; }
  .copy-button { align-self: flex-end; }
}

@media (max-width: 960px) {
  .product-card, .install-steps { grid-column: 1 / -1; }
  .install-steps { order: -1; }
}

/* ---------- Outro ---------- */

.outro {
  margin-top: var(--section-gap);
  padding-bottom: var(--space-7);
}
.outro-inner { padding-top: var(--space-6); border-top: 1px solid var(--line); }
.outro-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: var(--space-5); }
.outro-title {
  max-width: 16ch;
  font-size: var(--step-5);
  font-weight: 660;
  line-height: 1.02;
  letter-spacing: -.034em;
  text-wrap: balance;
}
.outro-title span { color: var(--text-quiet); }
.outro-text { margin-top: var(--space-5); font-size: var(--step-1); color: var(--text-soft); }
.outro-text a {
  display: inline-flex;
  align-items: center;
  gap: .3em;
  color: var(--text);
  text-decoration-color: var(--light);
  text-decoration-thickness: 1.5px;
}
.outro-text .icon { width: .75em; height: .75em; }