/* Unified interface standard
   Type: 34 / 24 / 17 / 14 / 12 / 10
   Controls: 42px minimum height
   Panels: 60px headers, 20-24px content padding */

:root {
  --ui-page: 34px;
  --ui-section: 24px;
  --ui-panel: 17px;
  --ui-body: 14px;
  --ui-meta: 12px;
  --ui-micro: 10px;
  --ui-control: 42px;
  --ui-panel-head: 60px;
  --ui-pad: 22px;
  --ui-gap: 16px;
}

/* Shared Tesla mark treatment across every page. */
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--cyan);
  overflow: hidden;
  background: #0b1116;
  flex: 0 0 34px;
}
.brand-mark img {
  display: block;
  width: 22px;
  height: 25px;
  object-fit: contain;
  filter: brightness(1.7) contrast(1.15);
}
@media (max-width: 900px) {
  .brand-mark { width: 32px; height: 32px; flex-basis: 32px; }
  .brand-mark img { width: 20px; height: 23px; }
}

body {
  font-size: var(--ui-body) !important;
  line-height: 1.6;
}

body * {
  font-size: inherit !important;
}

h2 {
  font-size: var(--ui-section) !important;
  line-height: 1.3;
}

h3 {
  font-size: var(--ui-panel) !important;
  line-height: 1.4;
}

.main,
main {
  width: 100%;
  max-width: 1560px !important;
  padding: 32px 36px 48px !important;
}

.page-head,
.topbar {
  gap: 24px;
  margin-bottom: 28px !important;
}

.page-head h1,
.topbar h1,
.can-page .topbar h1 {
  margin: 8px 0 8px !important;
  font-size: var(--ui-page) !important;
  line-height: 1.2;
  letter-spacing: 0 !important;
}

.page-head p,
.topbar p,
.topbar .lede {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: var(--ui-body) !important;
  line-height: 1.7 !important;
}

.eyebrow {
  font-size: var(--ui-meta) !important;
  letter-spacing: 1px !important;
}

/* Shared navigation */
.shell {
  grid-template-columns: 240px minmax(0, 1fr);
}

.side,
.sidebar {
  padding: 26px 18px !important;
  gap: 24px !important;
}

.brand strong {
  font-size: var(--ui-body) !important;
  letter-spacing: 1px !important;
}

.brand small,
.brand span,
.side-foot,
.sidebar-foot {
  font-size: var(--ui-micro) !important;
  line-height: 1.55 !important;
}

.side-label,
.nav-label,
.sidebar > .label {
  font-size: var(--ui-micro) !important;
  letter-spacing: 1px !important;
}

.nav,
.can-site-nav,
.global-nav {
  gap: 5px !important;
}

.nav a,
.can-site-nav a,
.global-nav a,
nav button {
  min-height: 44px;
  padding: 11px 10px !important;
  font-size: var(--ui-body) !important;
  line-height: 1.35;
}

.nav b,
.can-site-nav b,
.global-nav b {
  width: 22px !important;
  font-size: var(--ui-micro) !important;
}

/* Shared panels and controls */
.panel {
  border-color: var(--line);
}

.panel-head {
  min-height: var(--ui-panel-head) !important;
  padding: 16px 20px !important;
  gap: 14px !important;
}

.panel-head h2 {
  margin: 0;
  font-size: var(--ui-panel) !important;
  line-height: 1.35;
}

.panel-head small {
  font-size: var(--ui-meta) !important;
  line-height: 1.4;
}

.action,
.back,
.controls button,
.faults button,
.tabs button,
.segmented button,
.domain-controls button,
.scenario-switch button,
.scenario-tabs button,
.flash-controls button,
.lab-controls button,
.id-tools button,
.start-arb,
.transport button {
  min-height: var(--ui-control) !important;
  padding: 10px 13px !important;
  font-size: var(--ui-meta) !important;
  line-height: 1.35;
}

.icon-btn,
.module .open {
  width: var(--ui-control) !important;
  height: var(--ui-control) !important;
}

.tag,
.chip,
.status,
.live,
.pill,
.domain-tag,
.priority-mark,
.lab-badge,
.truth-badge {
  font-size: var(--ui-meta) !important;
  line-height: 1.35;
}

.tag,
.chip,
.lab-badge,
.truth-badge {
  padding: 7px 9px !important;
}

.notice,
.caption,
.arch-note,
.technical-correction,
.scenario-callout,
.service-explain,
.flash-caption,
.architecture-note {
  font-size: var(--ui-meta) !important;
  line-height: 1.65 !important;
}

.data-table,
table {
  font-size: var(--ui-meta) !important;
}

.data-table th,
table th {
  padding: 12px 11px !important;
  font-size: var(--ui-micro) !important;
}

.data-table td,
table td {
  padding: 13px 11px !important;
}

/* Home */
.home-page .intro-main {
  padding: 30px !important;
}

.home-page .intro-main h2 {
  font-size: var(--ui-section) !important;
}

.home-page .intro-main p {
  font-size: var(--ui-body) !important;
  line-height: 1.7 !important;
}

.home-page .principle {
  padding: 24px !important;
}

.home-page .principle small {
  font-size: var(--ui-meta) !important;
}

.home-page .principle strong {
  font-size: var(--ui-panel) !important;
}

.home-page .module {
  min-height: 120px;
  padding: 24px 22px !important;
}

.home-page .module h2 {
  font-size: var(--ui-panel) !important;
}

.home-page .module p {
  font-size: var(--ui-meta) !important;
  line-height: 1.6 !important;
}

.home-page .module .num,
.home-page .coverage-flow span {
  font-size: var(--ui-meta) !important;
}

.home-page .coverage {
  padding: 24px !important;
}

.home-page .coverage h2 {
  font-size: var(--ui-panel) !important;
}

.home-page .coverage-flow span {
  padding: 11px 13px !important;
}

.can-entry {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  margin-bottom: var(--ui-gap);
  overflow: hidden;
}

.can-entry-main,
.can-entry-visual {
  padding: 30px !important;
}

.can-entry-main h2 {
  margin: 10px 0;
  font-size: var(--ui-section) !important;
}

.can-entry-main p {
  max-width: 760px;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: var(--ui-body) !important;
  line-height: 1.7;
}

.can-entry-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--line);
  background: #090e12;
}

.can-wire {
  position: relative;
  height: 115px;
}

.can-wire::before,
.can-wire::after {
  position: absolute;
  right: 0;
  left: 0;
  height: 3px;
  content: "";
}

.can-wire::before { top: 30px; background: var(--cyan); }
.can-wire::after { top: 76px; background: var(--orange); }
.can-wire span { position: absolute; font: var(--ui-meta) "DM Mono"; }
.can-wire .h { top: 4px; color: var(--cyan); }
.can-wire .l { top: 86px; color: var(--orange); }
.can-wire i { position: absolute; top: 26px; width: 11px; height: 11px; border: 2px solid var(--cyan); background: #090e12; }
.can-wire i:nth-of-type(1) { left: 18%; }
.can-wire i:nth-of-type(2) { left: 49%; }
.can-wire i:nth-of-type(3) { left: 80%; }
.can-entry-visual strong { font-size: var(--ui-panel) !important; }
.can-entry-visual small { margin-top: 7px; color: var(--muted); font-size: var(--ui-meta) !important; }

/* Network and UDS */
.network-page .grid { grid-template-columns: 1fr; }
.network-page .grid > section:nth-child(2) { display: none; }
.network-actions { padding: 18px 20px !important; }
.network-actions p { font-size: var(--ui-body) !important; }
.network-map { height: 430px !important; }
.lin-stage { height: 400px !important; }
.domain-tabs button { min-height: 76px !important; padding: 16px !important; }
.domain-tabs b { font-size: var(--ui-panel) !important; }
.domain-tabs small { font-size: var(--ui-meta) !important; }
.fault-bar { padding: 17px 20px !important; }
.fault-bar > span { font-size: var(--ui-body) !important; }
.result > div { padding: 20px !important; }
.result small { font-size: var(--ui-meta) !important; }
.result strong { font-size: var(--ui-panel) !important; }

.uds-lab { margin-top: var(--ui-gap); }
.uds-layer-intro { display: grid; grid-template-columns: 1fr 62px 1fr; align-items: stretch; padding: 24px; }
.layer-card { padding: 20px; border: 1px solid #314049; background: #0d1419; }
.layer-card small { display: block; color: var(--cyan); font: var(--ui-meta) "DM Mono"; }
.layer-card h3 { margin: 9px 0 7px; font-size: var(--ui-panel) !important; }
.layer-card p { margin: 0; color: var(--muted); font-size: var(--ui-body) !important; line-height: 1.65; }
.layer-arrow { display: grid; place-items: center; color: #5d6b74; font-size: var(--ui-section); }
.diagnostic-frame { margin: 0 24px 24px; padding: 20px; border: 1px solid #2d3941; background: #090e12; }
.diagnostic-frame h3 { margin: 0 0 15px; font-size: var(--ui-panel) !important; }
.frame-parts { display: grid; grid-template-columns: 170px 95px repeat(3, minmax(90px, 1fr)); gap: 7px; }
.frame-part { min-height: 94px; padding: 13px; border: 1px solid #334149; background: #111920; }
.frame-part small { display: block; color: #697780; font: var(--ui-micro) "DM Mono"; }
.frame-part strong { display: block; margin: 10px 0 4px; font: 500 var(--ui-panel) "DM Mono"; }
.frame-part span { color: var(--muted); font-size: var(--ui-meta) !important; line-height: 1.45; }
.frame-part.can-id { border-color: #4b777a; background: #172b2e; }
.frame-part.service { border-color: #b77a44; background: #2a2018; }
.frame-brace { display: grid; grid-template-columns: 170px 1fr; gap: 7px; margin-top: 8px; }
.frame-brace div { padding: 8px 10px; border-top: 2px solid; text-align: center; font-size: var(--ui-meta) !important; }
.frame-brace .can { border-color: var(--cyan); color: var(--cyan); }
.frame-brace .uds { border-color: var(--orange); color: var(--orange); }
.envelope-note { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 15px; }
.envelope-note div { padding: 10px 12px; border-left: 2px solid; color: #b4bdc2; font-size: var(--ui-body) !important; line-height: 1.55; }
.envelope-note .address { border-color: var(--cyan); }
.envelope-note .business { border-color: var(--orange); }
.uds-detail-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; border-top: 1px solid var(--line); }
.uds-services, .flash-demo { padding: var(--ui-pad); }
.uds-services { border-right: 1px solid var(--line); }
.uds-services h3, .flash-demo h3 { margin: 0 0 14px; font-size: var(--ui-panel) !important; }
.service-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.service-item { min-height: 74px; padding: 13px; border: 1px solid #2d3941; background: #0d1318; color: var(--text); text-align: left; cursor: pointer; }
.service-item:hover, .service-item.active { border-color: #47777a; background: #183034; }
.service-item code { display: block; color: var(--cyan); font: var(--ui-meta) "DM Mono"; }
.service-item strong { display: block; margin-top: 7px; font-size: var(--ui-body) !important; }
.flash-track { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.flash-step { min-height: 118px; padding: 12px; border: 1px solid #2d3941; background: #0d1318; opacity: 0.45; }
.flash-step.active, .flash-step.done { opacity: 1; }
.flash-step.active { border-color: var(--cyan); background: #173034; }
.flash-step.done { border-color: #365447; }
.flash-step b { color: var(--cyan); font: var(--ui-meta) "DM Mono"; }
.flash-step strong { display: block; margin: 10px 0 5px; font-size: var(--ui-meta) !important; }
.flash-step span { color: var(--muted); font-size: var(--ui-micro) !important; line-height: 1.45; }

/* CAN laboratory */
.can-page .metrics,
.can-page .workspace,
.can-page .bottom-grid,
.can-page #canQuick { display: none; }
.can-page .story-lab { margin-top: 0; }
.can-page .can-site-nav { display: grid; gap: 5px; }
.can-page .can-site-nav a { display: flex; align-items: center; gap: 10px; border-left: 2px solid transparent; color: #9da8b0; }
.can-page .can-site-nav a:hover,
.can-page .can-site-nav a.active { border-left-color: var(--cyan); background: #182028; color: var(--text); }
.can-page .can-site-nav a.active b { color: var(--cyan); }
.can-page .story-head,
.can-page .academy-head,
.can-page .frame-head { padding: 22px 24px !important; }
.can-page .story-head h2,
.can-page .academy-head h2,
.can-page .frame-head h2 { font-size: var(--ui-section) !important; }
.can-page .story-head p,
.can-page .academy-head p,
.can-page .frame-head p { font-size: var(--ui-body) !important; line-height: 1.65 !important; }
.can-page .story-module,
.can-page .academy-block { padding: 24px !important; }
.can-page .story-title h3,
.can-page .block-title h3 { font-size: var(--ui-panel) !important; }
.can-page .story-title small,
.can-page .block-title p { font-size: var(--ui-meta) !important; line-height: 1.5 !important; }
.can-page .story-stage { height: 450px !important; }
.can-page .network-stage { height: 400px !important; }
.can-page .caption-main { font-size: var(--ui-body) !important; }
.can-page .caption-main b { font-size: var(--ui-micro) !important; }
.can-page .caption-data span { padding: 8px 10px !important; font-size: var(--ui-meta) !important; }
.can-page .number-strip small { font-size: var(--ui-micro) !important; }
.can-page .number-strip strong,
.can-page .binary-bits span { font-size: var(--ui-body) !important; }
.can-page .binary-bits span { height: 36px !important; }
.can-page .bit-indices span,
.can-page .bit-scale span,
.can-page .bit-row label,
.can-page .priority-row label,
.can-page .full-field em,
.can-page .frame-sequence,
.can-page .frame-flow,
.can-page .frame-flow span,
.can-page .frame-inspector .field-type,
.can-page .binary-range,
.can-page .binary-range span { font-size: var(--ui-micro) !important; }
.can-page .bit,
.can-page .priority-bit,
.can-page .frame-field strong,
.can-page .frame-field small { font-size: var(--ui-micro) !important; }
.can-page .frame-note,
.can-page .priority-caption,
.can-page .scenario-callout,
.can-page .technical-correction,
.can-page .stuffing-note { font-size: var(--ui-meta) !important; line-height: 1.6 !important; }
.can-page .can-matrix { font-size: var(--ui-meta) !important; }
.can-page .can-matrix th { padding: 12px 10px !important; font-size: var(--ui-micro) !important; }
.can-page .can-matrix td { padding: 13px 10px !important; }
.can-page .matrix-note { font-size: var(--ui-meta) !important; line-height: 1.6 !important; }
.can-page .full-field { height: 98px !important; padding: 12px 9px !important; }
.can-page .full-field strong { font-size: var(--ui-meta) !important; }
.can-page .full-field small { font-size: var(--ui-micro) !important; }
.can-page .frame-viewer,
.can-page .frame-inspector { padding: 24px !important; }
.can-page .frame-inspector h3 { font-size: var(--ui-section) !important; }
.can-page .frame-inspector p,
.can-page .field-facts div { font-size: var(--ui-meta) !important; line-height: 1.6 !important; }

/* Circuit pages */
.circuits-page .topbar h1 { font-size: var(--ui-page) !important; }
.circuits-page .system-card h3,
.circuits-page .detail h2,
.circuits-page .detail h3 { font-size: var(--ui-panel) !important; }
.circuits-page .system-card p,
.circuits-page .detail .desc,
.circuits-page .detail-section,
.circuits-page .io-list div,
.circuits-page .diagnosis,
.circuits-page .steps div,
.circuits-page .arch-note { font-size: var(--ui-meta) !important; line-height: 1.65 !important; }
.circuits-page .component strong { font-size: var(--ui-body) !important; }
.circuits-page .component small,
.circuits-page .component .tag,
.circuits-page .schematic-label,
.circuits-page .detail-type { font-size: var(--ui-micro) !important; }
.circuits-page .part-nav button { min-height: 50px !important; font-size: var(--ui-meta) !important; }

/* Systems */
.system-directory .system-nav { grid-template-columns: repeat(4, minmax(180px, 1fr)) !important; gap: 9px !important; }
.system-directory .system-nav button { min-height: 76px !important; }
.system-directory .system-nav button > span,
.system-directory .system-nav small { display: block !important; }
.system-directory .nav-icon { width: 36px !important; height: 36px !important; }
.systems-page .system-stage { height: 560px !important; }
.systems-page .logic-body { padding: var(--ui-pad) !important; }
.systems-page .logic-step { min-height: 126px; padding: 17px !important; }
.systems-page .logic-step b { font-size: var(--ui-meta) !important; }
.systems-page .logic-step strong { font-size: var(--ui-panel) !important; }
.systems-page .logic-step span { font-size: var(--ui-meta) !important; line-height: 1.6 !important; }

/* Software */
.software-page .deploy-stage { height: 540px !important; }
.software-page .deploy-side,
.software-page .dependency-body { padding: var(--ui-pad) !important; }
.software-page .stage-name { font-size: var(--ui-section) !important; }
.software-page .stage-desc { font-size: var(--ui-body) !important; line-height: 1.7 !important; }
.software-page .prechecks { gap: 11px !important; }
.software-page .prechecks div,
.software-page .prechecks b { font-size: var(--ui-meta) !important; }
.software-page .failure { min-height: 156px; padding: 20px !important; }
.software-page .failure small { font-size: var(--ui-micro) !important; }
.software-page .failure h3 { font-size: var(--ui-panel) !important; }
.software-page .failure p { font-size: var(--ui-meta) !important; line-height: 1.65 !important; }
.software-page .version { min-width: 190px !important; min-height: 70px; padding: 16px !important; }
.software-page .version strong { font-size: var(--ui-body) !important; }
.software-page .version span { font-size: var(--ui-meta) !important; }

/* Diagnosis */
.diagnosis-page .case-tabs button { min-height: 90px !important; padding: 20px !important; }
.diagnosis-page .case-tabs b { font-size: var(--ui-panel) !important; }
.diagnosis-page .case-tabs small { font-size: var(--ui-meta) !important; line-height: 1.55 !important; }
.diagnosis-page .investigation,
.diagnosis-page .method-body { padding: 26px !important; }
.diagnosis-page .investigation .step-code { font-size: var(--ui-meta) !important; }
.diagnosis-page .investigation h2 { font-size: var(--ui-section) !important; }
.diagnosis-page .investigation p { font-size: var(--ui-body) !important; line-height: 1.7 !important; }
.diagnosis-page .evidence { gap: 12px !important; padding-top: 18px !important; }
.diagnosis-page .evidence div,
.diagnosis-page .evidence b { font-size: var(--ui-meta) !important; }
.diagnosis-page .conclusion { padding: 16px !important; }
.diagnosis-page .conclusion small { font-size: var(--ui-meta) !important; }
.diagnosis-page .conclusion strong { font-size: var(--ui-panel) !important; }
.diagnosis-page .method-flow { gap: 9px !important; }
.diagnosis-page .method-step { min-height: 132px !important; padding: 18px !important; }
.diagnosis-page .method-step b { font-size: var(--ui-meta) !important; }
.diagnosis-page .method-step strong { font-size: var(--ui-panel) !important; }
.diagnosis-page .method-step span { font-size: var(--ui-meta) !important; line-height: 1.6 !important; }
.diagnosis-page .dtc-strip { gap: 11px !important; margin-top: 18px !important; }
.diagnosis-page .dtc-state,
.diagnosis-page .gateway-point,
.diagnosis-page .architecture-node { padding: 20px !important; }
.diagnosis-page .dtc-state strong,
.diagnosis-page .gateway-point b,
.diagnosis-page .architecture-node strong { font-size: var(--ui-panel) !important; }
.diagnosis-page .dtc-state p,
.diagnosis-page .gateway-point p,
.diagnosis-page .architecture-node span { font-size: var(--ui-meta) !important; line-height: 1.65 !important; }
.diagnosis-page .domain-caption span { font-size: var(--ui-body) !important; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 72px minmax(0, 1fr); }
  .main, main { padding: 28px 22px 40px !important; }
  .uds-layer-intro { grid-template-columns: 1fr; }
  .layer-arrow { height: 45px; transform: rotate(90deg); }
  .uds-detail-grid { grid-template-columns: 1fr; }
  .uds-services { border-right: 0; border-bottom: 1px solid var(--line); }
  .flash-track { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 720px) {
  :root { --ui-page: 28px; }
  .shell { display: block; }
  .side,
  .sidebar { position: sticky; top: 0; z-index: 20; height: auto; padding: 10px 12px !important; flex-direction: row; align-items: center; border-right: 0; border-bottom: 1px solid var(--line); gap: 8px !important; }
  .brand { margin-right: auto; padding: 0 !important; }
  .brand > div:last-child,
  .side-label,
  .nav-label,
  .nav span,
  .global-nav span,
  .can-site-nav span,
  .side-foot,
  .sidebar-foot { display: none !important; }
  .nav,
  .global-nav,
  .can-page .can-site-nav { display: flex; margin-left: auto; gap: 2px !important; }
  .nav a,
  .global-nav a,
  .can-site-nav a { min-width: 38px; min-height: 40px; justify-content: center; padding: 8px !important; border-left: 0 !important; border-bottom: 2px solid transparent; }
  .nav a.active,
  .global-nav a.active,
  .can-site-nav a.active { border-bottom-color: var(--cyan) !important; }
  .nav b,
  .global-nav b,
  .can-site-nav b { width: auto !important; }
  .main, main { padding: 22px 14px 34px !important; }
  .page-head, .topbar { display: block; margin-bottom: 22px !important; }
  .page-head .back, .top-actions { display: inline-flex; margin-top: 15px; }
  .panel-head { min-height: 58px !important; padding: 14px 16px !important; }
  .can-entry { grid-template-columns: 1fr; }
  .can-entry-main, .can-entry-visual { padding: 22px !important; }
  .can-entry-visual { border-top: 1px solid var(--line); border-left: 0; }
  .network-map { height: 520px !important; }
  .lin-stage { height: 460px !important; }
  .uds-layer-intro { padding: 15px; }
  .diagnostic-frame { margin: 0 15px 15px; padding: 15px; }
  .frame-parts { grid-template-columns: 1fr 1fr; }
  .frame-part.can-id { grid-column: 1 / -1; }
  .frame-brace, .envelope-note { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .flash-track { grid-template-columns: 1fr 1fr; }
  .uds-services, .flash-demo { padding: 17px; }
  .can-page .story-head,
  .can-page .academy-head,
  .can-page .frame-head { align-items: flex-start; flex-direction: column; padding: 20px 16px !important; }
  .can-page .story-module,
  .can-page .academy-block { padding: 20px 16px !important; }
  .can-page .story-stage { height: 480px !important; }
  .can-page .network-stage { height: 440px !important; }
  .can-page .frame-viewer,
  .can-page .frame-inspector { padding: 17px !important; }
  .system-directory .system-nav { grid-template-columns: repeat(2, minmax(145px, 1fr)) !important; }
  .systems-page .system-stage { height: 670px !important; }
  .software-page .deploy-stage { height: 620px !important; }
  .diagnosis-page .investigation { padding: 20px !important; }
  .diagnosis-page .method-body { padding: 18px !important; }
  .diagnosis-page .method-flow { grid-template-columns: 1fr !important; }
  .diagnosis-page .method-step { min-height: 0 !important; }
}

@media (max-width: 430px) {
  .nav a,
  .global-nav a,
  .can-site-nav a { min-width: 34px; padding: 7px 6px !important; }
  .panel-head { align-items: flex-start; flex-direction: column; }
  .flash-track { grid-template-columns: 1fr; }
}