.hero-pool {
  position: relative;
  height: calc(100vh - var(--header-height));
  min-height: 728px;
  overflow: hidden;
  overflow-x: clip;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid-line) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(90deg, var(--color-grid-line) var(--line-thin), var(--color-transparent) var(--line-thin));
  background-size: 32px 32px;
}

.hero-pool::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--color-panel) 0%, var(--color-transparent) 38%),
    linear-gradient(180deg, var(--color-panel) 0%, var(--color-transparent) 46%);
  opacity: 0.74;
  content: "";
}

.hero-copy {
  position: relative;
  z-index: 8;
  width: 100%;
  max-width: calc(var(--content-width) + (var(--gutter) * 2));
  margin-inline: auto;
  padding: 29px var(--gutter) 0;
  display: grid;
  grid-template-columns: minmax(620px, 1fr) 314px;
  align-items: start;
  gap: 54px;
}

.hero-title {
  position: relative;
  width: max-content;
  max-width: 920px;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(66px, 5.45vw, 84px);
  font-weight: 950;
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero-title-accent {
  position: relative;
  color: var(--color-accent);
}

.hero-title-accent::after {
  position: absolute;
  right: -12px;
  bottom: 4px;
  left: 3px;
  z-index: -1;
  height: 19px;
  background-color: var(--color-panel-alt);
  content: "";
}

.hero-waterline {
  position: absolute;
  right: -7px;
  bottom: -5px;
  width: 43%;
  height: 39%;
  border-top: var(--line-medium) solid var(--color-border);
  background-color: var(--color-water-wash);
  pointer-events: none;
}

.hero-support {
  margin-top: 13px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-description {
  max-width: 555px;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.75;
}

.hero-description strong {
  color: var(--color-text);
  font-weight: 850;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.platform-chips {
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  list-style: none;
}

.platform-chips li {
  max-width: 100%;
  padding: 5px 10px;
  overflow: hidden;
  color: var(--color-accent-dark);
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-pill);
  background-color: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.release-board {
  position: relative;
  margin-top: 7px;
  border: var(--line-medium) solid var(--color-accent-dark);
  background-color: var(--color-panel);
}

.release-board::before,
.release-board::after {
  position: absolute;
  top: -7px;
  width: 18px;
  height: 5px;
  border: var(--line-thin) solid var(--color-accent-dark);
  background-color: var(--color-warn);
  content: "";
}

.release-board::before {
  left: 20px;
}

.release-board::after {
  right: 20px;
}

.board-header {
  min-height: 30px;
  padding: 0 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-white);
  background-color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.board-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.status-light {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-warn);
}

.version-slot {
  padding: 11px 12px 10px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
}

.version-label {
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 750;
}

.version-value {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 850;
  text-align: right;
}

.board-note {
  margin: 0;
  padding: 0 12px 11px;
  color: var(--color-text-muted);
  font-size: 10px;
  line-height: 1.5;
}

.pool-device {
  position: absolute;
  right: 24px;
  bottom: 30px;
  left: 24px;
  z-index: 4;
  height: 474px;
}

.pool-label {
  position: absolute;
  top: 9px;
  left: 118px;
  z-index: 5;
  padding: 4px 8px;
  color: var(--color-accent-dark);
  background-color: var(--color-panel);
  border: var(--line-thin) solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.inlet {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 126px;
  overflow: hidden;
  color: var(--color-accent);
}

.inlet svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.inlet-flow {
  transform-origin: 100% 50%;
  animation: inlet-breathe 5.5s ease-in-out infinite;
}

.inlet-note {
  position: absolute;
  top: 208px;
  left: 0;
  width: 88px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 850;
  line-height: 1.45;
  text-align: right;
  text-transform: uppercase;
}

.basin {
  position: absolute;
  top: 0;
  right: 354px;
  bottom: 0;
  left: 112px;
  overflow: hidden;
  border: var(--line-heavy) solid var(--color-accent-dark);
  background-color: var(--color-panel-alt);
  background-image:
    linear-gradient(var(--color-tile-line) var(--line-thin), var(--color-transparent) var(--line-thin)),
    linear-gradient(90deg, var(--color-tile-line) var(--line-thin), var(--color-transparent) var(--line-thin));
  background-size: 28px 28px;
}

.basin::before,
.basin::after {
  position: absolute;
  inset: -15% -5%;
  pointer-events: none;
  background: repeating-linear-gradient(
    168deg,
    var(--color-transparent) 0,
    var(--color-transparent) 43px,
    var(--color-water-wave) 44px,
    var(--color-transparent) 47px,
    var(--color-transparent) 87px
  );
  content: "";
  animation: water-drift 6.8s ease-in-out infinite;
}

.basin::after {
  opacity: 0.52;
  transform: translate3d(-18px, 7px, 0);
  animation-direction: reverse;
  animation-duration: 8.2s;
}

.depth-mark {
  position: absolute;
  z-index: 4;
  top: 13px;
  right: 13px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 850;
}

.lane {
  position: relative;
  z-index: 3;
  height: 20%;
  display: flex;
  align-items: center;
  border-bottom: var(--line-thin) solid var(--color-tile-line);
}

.lane:last-child {
  border-bottom: 0;
}

.lane-number {
  width: 55px;
  flex-shrink: 0;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 31px;
  font-weight: 850;
  text-align: center;
  opacity: 0.24;
}

.lane-name {
  margin-top: -25px;
  padding: 3px 7px;
  color: var(--color-text);
  border-left: var(--line-heavy) solid var(--color-warn);
  background-color: var(--color-water-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.05em;
}

.lane-rule {
  position: absolute;
  right: 0;
  bottom: 8px;
  left: 0;
  height: 10px;
  background-image: radial-gradient(circle, var(--color-warn) 0 4px, var(--color-transparent) 4.5px);
  background-position: 0 50%;
  background-size: 17px 10px;
  background-repeat: repeat-x;
}

.lane-rule::after {
  position: absolute;
  top: 4px;
  right: 0;
  left: 0;
  z-index: -1;
  height: var(--line-medium);
  background-color: var(--color-error);
  content: "";
}

.connector-bank {
  position: absolute;
  top: 0;
  right: 338px;
  bottom: 0;
  width: 22px;
}

.connector {
  position: absolute;
  right: 0;
  width: 22px;
  height: var(--line-medium);
  background-color: var(--color-warn);
}

.connector:nth-child(1) { top: 10%; }
.connector:nth-child(2) { top: 30%; }
.connector:nth-child(3) { top: 50%; }
.connector:nth-child(4) { top: 70%; }
.connector:nth-child(5) { top: 90%; }

.starting-platforms {
  position: absolute;
  top: 0;
  right: 0;
  width: 338px;
  height: 100%;
  display: grid;
  grid-template-rows: repeat(5, 1fr);
  gap: 5px;
}

.start-card {
  position: relative;
  min-height: 0;
  padding: 9px 14px 8px 17px;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  border: var(--line-medium) solid var(--color-accent-dark);
  background-color: var(--color-panel);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.start-card::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 7px;
  background-color: var(--color-warn);
  content: "";
}

.start-card:hover {
  color: var(--color-white);
  background-color: var(--color-accent-dark);
  transform: translateX(-4px);
}

.platform-title {
  display: grid;
  gap: 2px;
}

.platform-code {
  color: var(--color-warn);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.platform-name {
  font-size: 15px;
  font-weight: 950;
}

.package-info {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.package-file {
  overflow: hidden;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 750;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.package-meta {
  color: var(--color-text-muted);
  font-size: 9px;
  font-weight: 650;
}

.start-card:hover .package-file,
.start-card:hover .package-meta {
  color: var(--color-white);
}

.card-arrow {
  color: var(--color-warn);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 850;
  text-align: right;
}

.pool-caption {
  position: absolute;
  right: 0;
  bottom: -21px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.next-section-edge {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  height: 18px;
  border-top: var(--line-heavy) solid var(--color-accent-dark);
  background-color: var(--color-panel);
}

.next-section-edge::before {
  position: absolute;
  top: -4px;
  left: var(--gutter);
  width: 172px;
  height: 4px;
  background-color: var(--color-warn);
  content: "";
}

.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  overflow-x: auto;
  border-bottom: var(--line-heavy) solid var(--color-accent-dark);
  background-color: var(--color-panel-alt);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-width: max-content;
  min-height: 48px;
  padding: 10px 18px;
  flex: 1 0 auto;
  color: var(--color-text-muted);
  border: 0;
  border-right: var(--line-thin) solid var(--color-border);
  background-color: var(--color-panel-alt);
  font-weight: 800;
}

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].active {
  color: var(--color-white);
  background-color: var(--color-accent-dark);
  box-shadow: inset 0 -4px 0 var(--color-warn);
}

.tab-panel {
  padding: clamp(22px, 4vw, 40px);
  border: var(--line-medium) solid var(--color-accent-dark);
  border-top: 0;
  background-color: var(--color-panel);
}

.tab-panel[hidden] {
  display: none;
}

.toc,
.toc-tabs {
  position: sticky;
  top: calc(var(--header-height) + 12px);
  z-index: 20;
  margin-bottom: 36px;
  padding: 8px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border: var(--line-medium) solid var(--color-accent-dark);
  background-color: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}

.toc a,
.toc-tabs a {
  min-width: max-content;
  min-height: 40px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: 800;
}

.toc a:hover,
.toc-tabs a:hover {
  color: var(--color-white);
  background-color: var(--color-accent-dark);
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  border: var(--line-thin) solid var(--color-border);
  background-color: var(--color-panel);
}

.faq-item[open] {
  border-width: var(--line-medium);
  border-color: var(--color-accent-dark);
}

.faq-item summary {
  min-height: 58px;
  padding: 15px 52px 15px 18px;
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  font-weight: 850;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  right: 18px;
  color: var(--color-warn);
  font-family: var(--font-mono);
  font-size: 22px;
  content: "+";
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 18px 18px;
  color: var(--color-text-muted);
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.term-card {
  min-width: 0;
  padding: 24px;
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  background-color: var(--color-panel);
}

.term-code {
  color: var(--color-warn);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.client-card {
  position: relative;
  padding: 26px;
  display: grid;
  grid-template-columns: minmax(160px, 0.8fr) minmax(0, 1.5fr) auto;
  gap: 24px;
  align-items: center;
  border: var(--line-medium) solid var(--color-accent-dark);
  background-color: var(--color-panel);
}

.client-card + .client-card {
  border-top: 0;
}

.client-card::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 7px;
  background-color: var(--color-border);
  content: "";
}

.client-card.is-featured::before {
  background-color: var(--color-warn);
}

.client-card.is-archived {
  border-color: var(--color-border);
}

.client-title {
  margin-bottom: 6px;
  font-size: 22px;
}

.client-meta {
  color: var(--color-text-muted);
  font-size: 14px;
}

.client-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge-featured {
  color: var(--color-white);
  border-color: var(--color-warn);
  background-color: var(--color-warn);
}

.badge-recommended {
  color: var(--color-white);
  border-color: var(--color-success);
  background-color: var(--color-success);
}

.badge-archived {
  color: var(--color-white);
  border-color: var(--color-error);
  background-color: var(--color-error);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.post-card {
  position: relative;
  min-width: 0;
  padding: clamp(22px, 3vw, 34px);
  border: var(--line-thin) solid var(--color-border);
  background-color: var(--color-panel);
}

.post-card::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 56px;
  height: var(--line-heavy);
  background-color: var(--color-warn);
  content: "";
}

.post-card:hover {
  border-color: var(--color-accent-dark);
}

.post-card time {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.post-card h3 {
  margin-top: 16px;
}

.post-card p {
  color: var(--color-text-muted);
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 20px 22px 20px 26px;
  border: var(--line-thin) solid var(--color-border);
  border-left: 8px solid var(--color-accent);
  background-color: var(--color-panel-alt);
}

.callout-warning {
  border-left-color: var(--color-warn);
}

.callout-error {
  border-left-color: var(--color-error);
}

.callout-title {
  margin-bottom: 6px;
  color: var(--color-text);
  font-weight: 850;
}

.dl-fab {
  position: fixed;
  right: max(18px, var(--gutter));
  bottom: 20px;
  z-index: 45;
  min-height: 54px;
  max-width: calc(100vw - (var(--gutter) * 2));
  padding: 8px 17px 8px 10px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--color-white);
  border: var(--line-medium) solid var(--color-accent-dark);
  border-radius: var(--radius-small);
  background-color: var(--color-warn);
  font-weight: 850;
}

.dl-fab-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: var(--line-thin) solid var(--color-white);
  border-radius: var(--radius-pill);
}

.article-download {
  margin-top: 56px;
  padding: clamp(24px, 5vw, 44px);
  border: var(--line-heavy) solid var(--color-accent-dark);
  background-color: var(--color-panel-alt);
}

.article-download::before {
  width: 96px;
  height: 7px;
  margin: calc(clamp(24px, 5vw, 44px) * -1) 0 24px;
  display: block;
  background-color: var(--color-warn);
  content: "";
}

.rule-lanes {
  display: grid;
  gap: 0;
  border-top: var(--line-medium) solid var(--color-accent-dark);
}

.rule-lane {
  display: grid;
  grid-template-columns: minmax(180px, 0.42fr) minmax(0, 1.58fr);
  border-right: var(--line-medium) solid var(--color-accent-dark);
  border-bottom: var(--line-medium) solid var(--color-accent-dark);
  border-left: var(--line-medium) solid var(--color-accent-dark);
}

.rule-lane-label {
  position: relative;
  padding: 28px;
  border-right: var(--line-thin) solid var(--color-border);
  background-color: var(--color-panel-alt);
}

.rule-lane-label::before {
  width: 10px;
  height: 10px;
  margin-bottom: 14px;
  display: block;
  border-radius: var(--radius-pill);
  background-color: var(--color-warn);
  content: "";
}

.rule-lane-body {
  padding: 28px;
  background-color: var(--color-panel);
}

.prose > .data-table {
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@keyframes water-drift {
  0%,
  100% {
    opacity: 0.55;
    transform: translate3d(-12px, 0, 0);
  }

  50% {
    opacity: 0.82;
    transform: translate3d(18px, 7px, 0);
  }
}

@keyframes inlet-breathe {
  0%,
  100% {
    opacity: 0.68;
    transform: scaleX(0.97);
  }

  50% {
    opacity: 0.94;
    transform: scaleX(1.03);
  }
}

@media (max-height: 820px) and (min-width: 901px) {
  .hero-copy {
    padding-top: 21px;
  }

  .hero-title {
    font-size: 66px;
  }

  .pool-device {
    height: 416px;
  }

  .hero-support {
    margin-top: 8px;
  }

  .platform-chips {
    margin-top: 8px;
  }
}

@media (max-width: 1100px) {
  .hero-pool {
    height: auto;
    min-height: 0;
    padding-bottom: 42px;
  }

  .hero-copy {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .release-board {
    width: min(100%, 420px);
  }

  .pool-device {
    position: relative;
    right: auto;
    bottom: auto;
    left: auto;
    width: calc(100% - (var(--gutter) * 2));
    height: 460px;
    margin: 28px auto 0;
  }
}

@media (max-width: 760px) {
  .hero-copy {
    padding-top: 28px;
  }

  .hero-title {
    width: auto;
    max-width: 100%;
    font-size: clamp(46px, 14vw, 68px);
  }

  .hero-support {
    align-items: flex-start;
    flex-direction: column;
  }

  .pool-device {
    height: auto;
    display: grid;
    gap: 12px;
  }

  .pool-label,
  .inlet,
  .connector-bank,
  .pool-caption {
    display: none;
  }

  .basin {
    position: relative;
    inset: auto;
    height: 280px;
  }

  .starting-platforms {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    grid-template-rows: none;
  }

  .start-card {
    min-height: 76px;
    grid-template-columns: 82px minmax(0, 1fr) 24px;
  }

  .client-card {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .post-grid,
  .term-grid {
    grid-template-columns: 1fr;
  }

  .rule-lane {
    grid-template-columns: 1fr;
  }

  .rule-lane-label {
    border-right: 0;
    border-bottom: var(--line-thin) solid var(--color-border);
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .basin {
    height: 240px;
  }

  .lane-number {
    width: 38px;
    font-size: 23px;
  }

  .lane-name {
    font-size: 9px;
  }

  .start-card {
    padding-right: 10px;
    grid-template-columns: 72px minmax(0, 1fr) 20px;
    gap: 7px;
  }

  .platform-name {
    font-size: 14px;
  }

  .package-file {
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .toc,
  .toc-tabs {
    margin-inline: 0;
  }

  .dl-fab {
    right: var(--gutter);
    bottom: 12px;
    left: var(--gutter);
    justify-content: center;
  }
}