:root {
  --paper: #f6f1e8;
  --paper-strong: #efe6d8;
  --ink: #183247;
  --ink-soft: #4a6274;
  --line: #cbbda8;
  --navy: #183247;
  --green: #5d7f48;
  --amber: #a56b17;
  --rose: #a14656;
  --violet: #7d5bb6;
  --shadow: 0 20px 50px rgba(24, 50, 71, 0.10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.75), transparent 38%),
    linear-gradient(180deg, #f8f4ec 0%, #f2ebdd 100%);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
}

.page-shell {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  gap: 2rem;
  max-width: 1700px;
  margin: 0 auto;
  padding: 2rem;
}

.hero {
  grid-column: 1 / -1;
  padding: 2rem 2.2rem;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(24,50,71,0.98), rgba(36,72,93,0.94)),
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0));
  color: #f7f3ed;
  box-shadow: var(--shadow);
}

.hero h1,
.section-head h2,
.legend-card h2,
.diagram-head h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 4.6rem);
  line-height: 0.96;
  max-width: 10ch;
}

.hero-copy {
  max-width: 62rem;
  margin: 1rem 0 0;
  color: rgba(247,243,237,0.82);
  font-size: 1.05rem;
  line-height: 1.55;
}

.eyebrow {
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.76rem;
  font-weight: 700;
  opacity: 0.86;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}

.stat-strip div {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(247,243,237,0.18);
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
}

.stat-strip span {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
}

.stat-strip small {
  display: block;
  margin-top: 0.2rem;
  color: rgba(247,243,237,0.76);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.side-nav {
  align-self: start;
  position: sticky;
  top: 1.5rem;
}

.side-nav-inner,
.legend-card,
.diagram-card,
.system-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 252, 247, 0.82);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
}

.side-nav-inner {
  padding: 1.2rem;
}

.side-nav a {
  display: block;
  padding: 0.62rem 0.2rem;
  color: var(--ink);
  text-decoration: none;
  border-top: 1px solid rgba(203, 189, 168, 0.6);
}

.side-nav a:first-of-type {
  border-top: 0;
}

.build-stamp {
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.content {
  min-width: 0;
}

.legend-card {
  padding: 1.4rem 1.6rem;
}

.guide-card {
  padding: 1.4rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 252, 247, 0.82);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
}

.legend-copy {
  margin: 1rem 0 0;
  color: var(--ink-soft);
  line-height: 1.5;
}

.legend-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 650;
  border: 1px solid transparent;
}

.legend-chip.hardware { background: #dfe9f2; border-color: #53718a; }
.legend-chip.electronics { background: #e4efe0; border-color: #5d7f48; }
.legend-chip.cable { background: #fff0cc; border-color: #a56b17; }
.legend-chip.fiber { background: #fde7c8; border-color: #b7671e; }
.legend-chip.sensor { background: #f7dde0; border-color: #a14656; }
.legend-chip.interface { background: #f3e5cc; border-color: #9d6a14; }
.legend-chip.batch { background: #f0e6fa; border-color: #7d5bb6; }

.guide {
  margin-top: 1.75rem;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.guide-item {
  padding: 1rem;
  border: 1px solid rgba(203, 189, 168, 0.65);
  border-radius: 18px;
  background: rgba(255,255,255,0.45);
}

.guide-item p {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  line-height: 1.5;
}

.edge-guide p:first-child {
  margin-top: 0;
}

.system-section {
  margin-top: 1.75rem;
}

.section-head {
  margin-bottom: 1rem;
}

.section-copy {
  margin: 0.55rem 0 0;
  color: var(--ink-soft);
  line-height: 1.5;
  max-width: 66rem;
}

.diagram-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.2rem;
}

.detector-plate-grid {
  grid-template-columns: 1fr;
}

.diagram-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.diagram-head {
  padding: 1.25rem 1.35rem 0.8rem;
  border-bottom: 1px solid rgba(203, 189, 168, 0.6);
}

.diagram-copy {
  color: var(--ink-soft);
  line-height: 1.45;
  min-height: 3.2rem;
}

.downloads {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 0.8rem 0 0;
}

.downloads a {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
}

.system-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1.2rem;
}

.system-card {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.system-card-copy {
  padding: 1.25rem 1.35rem 1rem;
  border-bottom: 1px solid rgba(203, 189, 168, 0.6);
}

.system-card h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 1.45rem;
  font-weight: 600;
}

.system-card-copy p:not(.eyebrow) {
  color: var(--ink-soft);
  line-height: 1.45;
}

.card-actions,
.view-sequence,
.viewer-actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.card-actions {
  margin: 0.85rem 0;
}

.card-actions a,
.viewer-actions a,
.viewer-actions button,
.stage-link {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
}

.card-actions a,
.viewer-actions a,
.viewer-actions button {
  padding: 0.45rem 0.7rem;
  border: 1px solid rgba(203, 189, 168, 0.75);
  border-radius: 999px;
  background: rgba(255,255,255,0.55);
}

.viewer-actions button {
  font: inherit;
  cursor: pointer;
}

.viewer-actions button.active {
  color: #f7f3ed;
  border-color: var(--navy);
  background: var(--navy);
}

.view-sequence {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
}

.stage-link {
  padding: 0.55rem 0.65rem;
  border: 1px solid rgba(203, 189, 168, 0.65);
  border-radius: 12px;
  background: rgba(255,255,255,0.45);
}

.stage-link span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.diagram-frame {
  padding: 0.65rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.65), rgba(255,255,255,0.35)),
    repeating-linear-gradient(
      0deg,
      rgba(203, 189, 168, 0.08),
      rgba(203, 189, 168, 0.08) 1px,
      transparent 1px,
      transparent 22px
    );
}

.diagram-object {
  width: 100%;
  height: clamp(24rem, 46vw, 52rem);
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid rgba(203, 189, 168, 0.7);
  overflow: hidden;
  display: block;
}

.inline-diagram {
  overflow: auto;
}

.inline-diagram-svg {
  display: block;
  width: 100%;
  height: 100%;
}

.inline-diagram a,
.viewer-svg a {
  cursor: pointer;
}

.large-frame .diagram-object {
  height: clamp(32rem, 62vw, 70rem);
}

.preview-frame .diagram-object {
  height: clamp(20rem, 34vw, 34rem);
}

.system-frame .diagram-object {
  height: clamp(34rem, 72vh, 58rem);
}

.compact-hero h1 {
  max-width: none;
  font-size: clamp(2rem, 3.5vw, 3.6rem);
}

.system-page .diagram-card + .diagram-card {
  margin-top: 1.3rem;
}

.viewer-body {
  min-height: 100vh;
}

.viewer-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(28rem, 1fr) auto;
  gap: 1rem;
  padding: 1rem;
}

.viewer-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: end;
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 252, 247, 0.84);
  box-shadow: var(--shadow);
}

.viewer-header h1 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.7rem, 2.8vw, 3rem);
  font-weight: 600;
}

.viewer-header p:not(.eyebrow) {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
}

.viewer-frame {
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
}

.viewer-object {
  height: calc(100vh - 12.5rem);
  min-height: 34rem;
  overflow: auto;
  border-radius: 18px;
  background: #ffffff;
}

.viewer-svg {
  display: block;
  max-width: none;
}

.viewer-stamp {
  margin: 0 0.2rem;
}

.hwdb-object-link {
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
}

.hwdb-object-dialog {
  width: min(1180px, calc(100vw - 2rem));
  max-height: min(900px, calc(100vh - 2rem));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 0;
  color: var(--ink);
  background: #fffdf8;
  box-shadow: 0 24px 80px rgba(24, 50, 71, 0.30);
}

.hwdb-object-dialog:focus {
  outline: none;
}

.hwdb-object-dialog::backdrop {
  background: rgba(24, 50, 71, 0.44);
}

.hwdb-dialog-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: inherit;
}

.hwdb-dialog-head,
.hwdb-dialog-actions {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(239,230,216,0.54);
}

.hwdb-dialog-head h2 {
  margin: 0.45rem 0 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.35rem, 2vw, 2rem);
  font-weight: 600;
  line-height: 1.15;
}

.hwdb-dialog-kicker {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hwdb-dialog-body {
  overflow: auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.hwdb-dialog-actions {
  border-top: 1px solid var(--line);
  border-bottom: 0;
  display: flex;
  justify-content: flex-end;
}

.hwdb-dialog-actions button {
  min-height: 2.3rem;
  padding: 0 0.8rem;
  border: 1px solid rgba(203, 189, 168, 0.8);
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  color: var(--navy);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.hwdb-dialog-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.45rem;
  padding: 0 0.55rem;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.hwdb-dialog-badge.system { background: var(--navy); }
.hwdb-dialog-badge.subsystem { background: #4f7c7a; }
.hwdb-dialog-badge.component { background: var(--green); }
.hwdb-dialog-badge.relation { background: var(--amber); }
.hwdb-dialog-badge.batch { background: var(--violet); }
.hwdb-dialog-badge.sensor { background: var(--rose); }

.hwdb-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.hwdb-detail-item {
  border: 1px solid rgba(203, 189, 168, 0.75);
  border-radius: 12px;
  padding: 0.7rem;
  background: rgba(255,255,255,0.58);
}

.hwdb-detail-item span {
  display: block;
  margin-bottom: 0.24rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hwdb-neighborhood-section {
  border: 1px solid rgba(24,50,71,0.30);
  background: rgba(255,255,255,0.34);
}

.hwdb-neighborhood-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0.8rem;
  border-bottom: 1px solid rgba(24,50,71,0.22);
}

.hwdb-neighborhood-head h3 {
  margin: 0;
}

.hwdb-graph-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.hwdb-graph-toolbar button {
  min-height: 2rem;
  padding: 0 0.65rem;
  border: 1px solid rgba(24,50,71,0.34);
  border-radius: 0;
  background: rgba(255,255,255,0.42);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.hwdb-graph-toolbar button.active {
  color: #fffdf8;
  border-color: var(--ink);
  background: var(--ink);
}

.hwdb-neighborhood-frame {
  min-height: 22rem;
  max-height: 48rem;
  overflow: auto;
  padding: 0.75rem;
  background:
    linear-gradient(90deg, rgba(24,50,71,0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(24,50,71,0.06) 1px, transparent 1px),
    rgba(255,253,248,0.76);
  background-size: 24px 24px, 24px 24px, auto;
}

.hwdb-neighborhood-svg {
  display: block;
  max-width: none;
}

.hwdb-neighborhood-summary,
.hwdb-neighborhood-note,
.hwdb-neighborhood-empty {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.hwdb-graph-edge {
  fill: none;
  stroke: #33536a;
  stroke-width: 1.8;
}

.hwdb-graph-edge.hierarchy {
  stroke: #274c67;
}

.hwdb-graph-edge.dependency {
  stroke: #a56b17;
  stroke-dasharray: 7 5;
}

.hwdb-graph-arrow {
  fill: #33536a;
}

.hwdb-graph-edge-label {
  fill: var(--ink-soft);
  stroke: #fffdf8;
  stroke-width: 5px;
  paint-order: stroke;
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 11px;
  font-weight: 600;
  pointer-events: none;
}

.hwdb-graph-node rect {
  fill: #fffdf8;
  stroke: rgba(24,50,71,0.34);
  stroke-width: 1.2;
}

.hwdb-graph-node.system rect { fill: #dfe9f2; }
.hwdb-graph-node.subsystem rect { fill: #e6f1ef; }
.hwdb-graph-node.component rect { fill: #e4efe0; }
.hwdb-graph-node.batch rect { fill: #f0e6fa; }
.hwdb-graph-node.sensor rect { fill: #f7dde0; }
.hwdb-graph-node.relation rect { fill: #fff0cc; }

.hwdb-graph-node.focus rect {
  fill: #fff7f3;
  stroke: var(--rose);
  stroke-width: 2.6;
}

.hwdb-graph-node-label,
.hwdb-graph-node-kind {
  fill: var(--ink);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  pointer-events: none;
}

.hwdb-graph-node-label {
  font-size: 12px;
  font-weight: 700;
}

.hwdb-graph-node-kind {
  fill: var(--ink-soft);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hwdb-detail-item code,
.hwdb-dialog-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84rem;
  overflow-wrap: anywhere;
}

.hwdb-dialog-section h3 {
  margin: 0 0 0.45rem;
  font-size: 0.96rem;
  font-weight: 600;
}

.hwdb-dialog-section p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.5;
}

.hwdb-mini-table {
  width: 100%;
  border-collapse: collapse;
}

.hwdb-mini-table th,
.hwdb-mini-table td {
  padding: 0.55rem;
  border-bottom: 1px solid rgba(203, 189, 168, 0.7);
  text-align: left;
  vertical-align: top;
  font-size: 0.86rem;
}

.hwdb-mini-table th {
  background: rgba(239,230,216,0.66);
  color: var(--ink-soft);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* DUNE/SURF far-site atlas treatment. */
:root {
  --dune-space: #071421;
  --dune-cavern: #0d2233;
  --dune-rock: #241910;
  --dune-panel: rgba(9, 26, 40, 0.86);
  --dune-panel-soft: rgba(13, 34, 51, 0.68);
  --dune-panel-strong: rgba(8, 22, 35, 0.96);
  --dune-line: rgba(126, 211, 236, 0.32);
  --dune-beam: #43c6f0;
  --dune-beam-soft: #a5edff;
  --dune-gold: #f1b744;
  --dune-copper: #bd6f33;
  --dune-green: #5eb98c;
  --dune-rose: #bf5267;
  --dune-ink: #edf8ff;
  --dune-muted: #a9c4d1;
}

body {
  color: var(--dune-ink);
  background:
    linear-gradient(112deg, transparent 0 45%, rgba(67,198,240,0.22) 45.2%, rgba(67,198,240,0.07) 46.3%, transparent 47%),
    repeating-linear-gradient(180deg, rgba(241,183,68,0.055) 0 1px, transparent 1px 50px),
    linear-gradient(180deg, #050c15 0%, var(--dune-space) 42%, var(--dune-rock) 100%);
}

a {
  color: var(--dune-beam-soft);
  text-underline-offset: 0.16em;
}

.page-shell {
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: clamp(1.2rem, 2.4vw, 2.6rem);
  max-width: 1620px;
  padding: clamp(1rem, 2.8vw, 3rem);
}

.hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--dune-line);
  border-top: 4px solid var(--dune-gold);
  border-radius: 6px;
  background:
    linear-gradient(135deg, rgba(7,20,33,0.98), rgba(13,40,61,0.94) 58%, rgba(61,39,21,0.88)),
    linear-gradient(90deg, rgba(67,198,240,0.2), transparent 40%);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
  color: var(--dune-ink);
  padding: 1rem 1.2rem 1.45rem;
}

.hero::after,
.viewer-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dune-gold), var(--dune-beam), transparent);
}

.masthead-line {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: center;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid rgba(126,211,236,0.28);
  color: var(--dune-muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.masthead-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.masthead-brand img,
.system-hero-kicker img {
  width: clamp(4rem, 8vw, 7rem);
  height: auto;
  filter: drop-shadow(0 0 16px rgba(67,198,240,0.24));
}

.masthead-line > span:nth-child(2) {
  text-align: center;
}

.masthead-line > span:nth-child(3) {
  text-align: right;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.36fr);
  gap: clamp(1.5rem, 4vw, 4.5rem);
  align-items: end;
  padding-top: 1.45rem;
}

.hero h1,
.section-head h2 {
  font-family: "Avenir Next Condensed", "Avenir Next", "Helvetica Neue", sans-serif;
  font-weight: 800;
  letter-spacing: 0;
}

.legend-card h2,
.diagram-head h3,
.system-card h3,
.viewer-header h1,
.hwdb-dialog-head h2 {
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-weight: 750;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 12ch;
  color: var(--dune-ink);
  font-size: clamp(3rem, 8vw, 8.4rem);
  line-height: 0.87;
}

.hero-copy {
  max-width: 56rem;
  color: var(--dune-muted);
  font-size: clamp(1rem, 1.25vw, 1.24rem);
}

.eyebrow,
.toc-kicker,
.stage-link span,
.hwdb-dialog-kicker {
  color: var(--dune-gold);
  opacity: 1;
}

.system-hero-kicker {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

.system-hero-kicker .eyebrow {
  margin: 0;
}

.stat-strip {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 0;
  border-top: 1px solid var(--dune-line);
  border-left: 1px solid var(--dune-line);
}

.stat-strip div {
  min-height: 6rem;
  padding: 0.85rem;
  border: 0;
  border-right: 1px solid var(--dune-line);
  border-bottom: 1px solid var(--dune-line);
  border-radius: 0;
  background: rgba(255,255,255,0.045);
}

.stat-strip span {
  color: var(--dune-beam-soft);
  font-family: "Avenir Next Condensed", "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 0.9;
}

.stat-strip small {
  color: var(--dune-muted);
  font-size: 0.68rem;
  font-weight: 800;
}

.side-nav-inner,
.legend-card,
.guide-card,
.diagram-card,
.system-card,
.viewer-header,
.viewer-frame,
.hwdb-object-dialog,
.hwdb-detail-item,
.hwdb-neighborhood-section {
  border-radius: 6px;
  box-shadow: none;
  backdrop-filter: none;
}

.side-nav-inner {
  border: 1px solid var(--dune-line);
  border-left: 3px solid var(--dune-gold);
  background: var(--dune-panel);
  padding: 1rem;
}

.side-nav a {
  padding: 0.65rem 0;
  border-top: 1px solid rgba(126,211,236,0.18);
  color: var(--dune-ink);
  font-size: 0.9rem;
}

.side-nav a:hover {
  color: var(--dune-beam-soft);
}

.build-stamp,
.section-copy,
.legend-copy,
.guide-item p,
.diagram-copy,
.system-card-copy p:not(.eyebrow),
.toc-meta,
.viewer-header p:not(.eyebrow),
.hwdb-dialog-section p,
.hwdb-neighborhood-summary,
.hwdb-neighborhood-note,
.hwdb-neighborhood-empty,
.hwdb-graph-node-kind {
  color: var(--dune-muted);
}

.toc-section {
  margin-bottom: 1.8rem;
}

.toc-grid {
  border-top: 1px solid var(--dune-line);
  border-bottom: 1px solid var(--dune-line);
  background: rgba(9,26,40,0.28);
}

.toc-entry {
  display: grid;
  grid-template-columns: 4rem minmax(7rem, 0.25fr) minmax(13rem, 0.45fr) minmax(12rem, 1fr);
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 0.8rem;
  border-top: 1px solid rgba(126,211,236,0.18);
  color: var(--dune-ink);
  text-decoration: none;
}

.toc-entry:first-child {
  border-top: 0;
}

.toc-entry:hover {
  background: rgba(67,198,240,0.08);
}

.toc-number,
.system-card-number {
  color: var(--dune-beam);
  font-family: "Avenir Next Condensed", "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.toc-entry:nth-child(3n+2) .toc-number,
.system-card:nth-child(3n+2) .system-card-number {
  color: var(--dune-green);
}

.toc-entry:nth-child(3n+3) .toc-number,
.system-card:nth-child(3n+3) .system-card-number {
  color: var(--dune-gold);
}

.toc-title {
  color: var(--dune-ink);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: clamp(1.18rem, 1.6vw, 1.65rem);
  font-weight: 750;
  line-height: 1.08;
}

.legend-card,
.guide-card,
.diagram-card,
.system-card {
  border-color: var(--dune-line);
  background: var(--dune-panel);
}

.legend-card,
.guide-card {
  padding: 1.25rem 1.35rem;
}

.guide-item {
  border-color: rgba(126,211,236,0.24);
  border-radius: 6px;
  background: rgba(255,255,255,0.045);
}

.legend-chip {
  border-radius: 999px;
  color: #06111b;
}

.legend-chip.hardware { background: #d9edf7; border-color: #4c8fb0; }
.legend-chip.electronics { background: #d9f0e5; border-color: #3a8a68; }
.legend-chip.cable { background: #fff0bf; border-color: #d69a2d; }
.legend-chip.fiber { background: #ffe3bf; border-color: #c56c2f; }
.legend-chip.sensor { background: #ffe0e4; border-color: #bf5267; }
.legend-chip.interface { background: #f4e5c4; border-color: #b48225; }
.legend-chip.batch { background: #f2e9ff; border-color: #7b5bb4; }

.section-head {
  margin-bottom: 1.1rem;
  padding-top: 0.2rem;
}

.section-head h2 {
  color: var(--dune-ink);
  font-size: clamp(2rem, 4.5vw, 4.8rem);
  line-height: 0.92;
}

.diagram-head,
.system-card-copy {
  border-bottom-color: rgba(126,211,236,0.2);
}

.downloads a,
.card-actions a,
.viewer-actions a,
.viewer-actions button,
.stage-link {
  color: var(--dune-beam-soft);
  border-radius: 6px;
}

.card-actions a,
.viewer-actions a,
.viewer-actions button {
  border-color: rgba(126,211,236,0.3);
  background: rgba(255,255,255,0.045);
}

.card-actions a:hover,
.viewer-actions a:hover,
.viewer-actions button:hover,
.viewer-actions button.active {
  border-color: var(--dune-beam);
  background: var(--dune-beam);
  color: #06111b;
}

.system-card-grid {
  grid-template-columns: 1fr;
}

.system-card {
  display: grid;
  grid-template-columns: 4rem minmax(18rem, 0.42fr) minmax(0, 1fr);
  grid-template-rows: none;
}

.system-card-number {
  padding: 1.25rem 0 0 1rem;
  font-size: 2.25rem;
}

.system-card-copy {
  border-right: 1px solid rgba(126,211,236,0.2);
  border-bottom: 0;
}

.system-card h3 {
  color: var(--dune-ink);
  font-size: clamp(1.45rem, 2.2vw, 2.2rem);
  line-height: 1.05;
}

.view-sequence {
  grid-template-columns: 1fr;
}

.stage-link {
  border-color: rgba(126,211,236,0.22);
  background: rgba(255,255,255,0.035);
}

.diagram-frame {
  background:
    linear-gradient(90deg, rgba(126,211,236,0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(126,211,236,0.08) 1px, transparent 1px),
    rgba(4,13,22,0.72);
  background-size: 24px 24px, 24px 24px, auto;
}

.diagram-object,
.viewer-object {
  border-radius: 6px;
  border-color: rgba(126,211,236,0.38);
  background: #071421;
}

.compact-hero h1 {
  color: var(--dune-ink);
}

.viewer-body {
  background:
    linear-gradient(112deg, transparent 0 48%, rgba(67,198,240,0.16) 48.2%, transparent 49.1%),
    linear-gradient(180deg, #050c15 0%, #071421 62%, #1c1712 100%);
}

.viewer-header {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--dune-line);
  border-top: 3px solid var(--dune-gold);
  background: var(--dune-panel-strong);
}

.viewer-header h1 {
  color: var(--dune-ink);
}

.viewer-frame {
  border-color: var(--dune-line);
}

.hwdb-object-link {
  color: var(--dune-beam-soft);
}

.hwdb-object-dialog {
  border-color: var(--dune-line);
  color: var(--dune-ink);
  background: var(--dune-panel-strong);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.48);
}

.hwdb-object-dialog::backdrop {
  background: rgba(2, 8, 14, 0.74);
}

.hwdb-dialog-head,
.hwdb-dialog-actions {
  border-color: rgba(126,211,236,0.22);
  background: rgba(7,20,33,0.92);
}

.hwdb-dialog-head h2,
.hwdb-dialog-section h3,
.hwdb-detail-item span,
.hwdb-neighborhood-head h3 {
  color: var(--dune-ink);
}

.hwdb-dialog-actions button,
.hwdb-graph-toolbar button {
  border-color: rgba(126,211,236,0.3);
  border-radius: 6px;
  background: rgba(255,255,255,0.055);
  color: var(--dune-beam-soft);
}

.hwdb-dialog-actions button:hover,
.hwdb-graph-toolbar button.active {
  border-color: var(--dune-beam);
  background: var(--dune-beam);
  color: #06111b;
}

.hwdb-dialog-badge.system { background: #0b4568; }
.hwdb-dialog-badge.subsystem { background: #247b76; }
.hwdb-dialog-badge.component { background: #3b865f; }
.hwdb-dialog-badge.relation { background: #a86f18; }
.hwdb-dialog-badge.batch { background: #765aa8; }
.hwdb-dialog-badge.sensor { background: #a94a62; }

.hwdb-detail-item {
  border-color: rgba(126,211,236,0.24);
  background: rgba(255,255,255,0.045);
}

.hwdb-neighborhood-section {
  border-color: var(--dune-line);
  background: rgba(255,255,255,0.035);
}

.hwdb-neighborhood-head {
  border-bottom-color: rgba(126,211,236,0.2);
}

.hwdb-neighborhood-frame {
  background:
    linear-gradient(90deg, rgba(126,211,236,0.09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(126,211,236,0.09) 1px, transparent 1px),
    #081521;
  background-size: 24px 24px, 24px 24px, auto;
}

.hwdb-graph-edge,
.hwdb-graph-edge.hierarchy {
  stroke: #6ecbe8;
}

.hwdb-graph-edge.dependency {
  stroke: #e3a63b;
}

.hwdb-graph-arrow {
  fill: #6ecbe8;
}

.hwdb-graph-edge-label {
  fill: var(--dune-beam-soft);
  stroke: #081521;
}

.hwdb-graph-node rect {
  fill: #d9edf7;
  stroke: #4c8fb0;
}

.hwdb-graph-node.system rect { fill: #bdefff; }
.hwdb-graph-node.subsystem rect { fill: #d3f5f0; }
.hwdb-graph-node.component rect { fill: #d9f0e5; }
.hwdb-graph-node.batch rect { fill: #f2e9ff; }
.hwdb-graph-node.sensor rect { fill: #ffe0e4; }
.hwdb-graph-node.relation rect { fill: #fff0bf; }

.hwdb-graph-node.focus rect {
  fill: #fff3cf;
  stroke: var(--dune-gold);
}

.hwdb-graph-node-label,
.hwdb-graph-node-kind {
  fill: #06111b;
}

.hwdb-mini-table th,
.hwdb-mini-table td {
  border-bottom-color: rgba(126,211,236,0.18);
}

.hwdb-mini-table th {
  background: rgba(67,198,240,0.11);
  color: var(--dune-beam-soft);
}

@media (max-width: 980px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .masthead-line,
  .hero-grid,
  .toc-entry,
  .system-card {
    grid-template-columns: 1fr;
  }

  .masthead-brand,
  .system-hero-kicker {
    align-items: flex-start;
    flex-direction: column;
  }

  .masthead-line > span:nth-child(2),
  .masthead-line > span:nth-child(3) {
    text-align: left;
  }

  .side-nav {
    position: static;
  }

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

  .system-card-grid,
  .viewer-header {
    grid-template-columns: 1fr;
  }

  .system-card-number {
    padding: 1rem 1.35rem 0;
  }

  .system-card-copy {
    border-right: 0;
    border-bottom: 1px solid rgba(126,211,236,0.2);
  }

  .viewer-actions {
    justify-content: flex-start;
  }

  .viewer-object {
    height: 72vh;
    min-height: 28rem;
  }

  .hwdb-neighborhood-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .hwdb-neighborhood-frame {
    max-height: 70vh;
  }

  .hwdb-detail-grid {
    grid-template-columns: 1fr;
  }
}