@import url("../systems-course/styles.css?v=20260715-2");

:root {
  color-scheme: light;
  --canvas: #eaf0f2;
  --paper: #f5f8fa;
  --paper-strong: #ffffff;
  --ink: #14212a;
  --ink-soft: #4a5a65;
  --navy: #132b3a;
  --navy-soft: #1d4052;
  --cobalt: #2f5bd3;
  --cobalt-soft: #e7ecff;
  --interrupt: #b93831;
  --interrupt-soft: #fbe9e6;
  --signal: #007c70;
  --signal-soft: #ddf3ef;
  --amber: #9a5b00;
  --amber-soft: #fff0d1;
  --line: #c8d5dc;
  --line-dark: #8297a3;
  --danger: #a82f2a;
  --provider-a: #2f5bd3;
  --provider-a-soft: #e7ecff;
  --provider-b: #007c70;
  --provider-b-soft: #ddf3ef;
  --fault: #b93831;
  --fault-soft: #fbe9e6;
  --queue: #9a5b00;
  --queue-soft: #fff0d1;
  --console: #081923;
  --console-line: #294454;
  --shadow: 0 18px 52px rgb(19 43 58 / 12%);
  --display: "Familjen Grotesk", "Arial Narrow", sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --rail-width: 278px;
  --drawer-width: 320px;
}

html {
  background: var(--canvas);
}

body {
  background:
    linear-gradient(rgb(19 43 58 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(19 43 58 / 4%) 1px, transparent 1px),
    var(--canvas);
  background-size: 32px 32px;
  color: var(--ink);
}

::selection {
  background: var(--provider-a-soft);
  color: var(--ink);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline-color: #e55c43;
}

.decagon-shell {
  isolation: isolate;
}

.course-stage,
#course-view,
.decagon-home,
.decagon-hero,
.hero-console-wrap,
.gateway-console,
.gateway-layout,
.sim-output {
  min-width: 0;
  max-width: 100%;
}

.course-stage {
  overflow-x: clip;
}

.course-rail {
  background:
    linear-gradient(180deg, rgb(255 255 255 / 3%), transparent 180px),
    var(--navy);
}

.brand-lockup {
  min-height: 76px;
}

.brand-copy strong {
  font-size: 1.22rem;
  letter-spacing: -0.025em;
}

.brand-copy small {
  color: rgb(235 245 248 / 68%);
  font: 500 0.64rem/1.25 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.decagon-mark {
  position: relative;
  display: block;
  overflow: hidden;
  border-color: rgb(255 255 255 / 42%);
  border-radius: 9px;
  background: #0c2130;
}

.decagon-mark span {
  position: absolute;
  display: block;
  width: auto;
  height: auto;
  border: 0;
  border-radius: 0;
  background: none;
}

.decagon-mark span:nth-child(1) {
  top: 12px;
  right: 8px;
  left: 8px;
  height: 3px;
  border-radius: 3px;
  background: #6f8cff;
  box-shadow: 0 16px 0 #35b9aa;
}

.decagon-mark span:nth-child(2) {
  top: 8px;
  bottom: 8px;
  left: 20px;
  width: 2px;
  background: rgb(255 255 255 / 34%);
}

.decagon-mark span:nth-child(3) {
  top: 17px;
  left: 16px;
  width: 10px;
  height: 10px;
  border: 2px solid #ffffff;
  border-radius: 3px;
  background: var(--navy);
  box-shadow: 0 0 0 3px rgb(19 43 58 / 72%);
}

.rail-progress {
  border-bottom-color: rgb(255 255 255 / 13%);
}

.progress-track {
  background: rgb(255 255 255 / 12%);
}

#progress-bar {
  background: linear-gradient(90deg, #6f8cff, #35b9aa);
}

.decagon-nav {
  padding-top: 0.35rem;
}

.track-nav-group {
  padding: 0.7rem 0 0.25rem;
}

.track-nav-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 1rem 0.35rem 1.2rem;
  color: rgb(235 245 248 / 55%);
  font: 600 0.61rem/1.3 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.track-nav-label span:last-child {
  min-width: 1.8rem;
  padding: 0.08rem 0.3rem;
  border: 1px solid rgb(255 255 255 / 15%);
  border-radius: 999px;
  text-align: center;
}

.decagon-nav .module-nav-button {
  min-height: 44px;
  padding-block: 0.55rem;
}

.decagon-nav .module-nav-button[aria-current="page"] {
  background: linear-gradient(90deg, rgb(111 140 255 / 18%), transparent);
}

.decagon-nav .module-nav-button[aria-current="page"]::before {
  background: #6f8cff;
}

.nav-track-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border: 1px solid rgb(255 255 255 / 44%);
  border-radius: 50%;
}

.nav-track-dot.coding {
  background: #6f8cff;
}

.nav-track-dot.gateway {
  background: #35b9aa;
}

.nav-track-dot.crawler {
  background: #e9a34a;
}

.rail-tools select {
  border-color: rgb(255 255 255 / 18%);
  background: #0d2432;
}

.course-topbar {
  border-bottom-color: rgb(130 151 163 / 45%);
  background: rgb(245 248 250 / 88%);
  backdrop-filter: blur(12px);
}

.course-topbar::after {
  position: absolute;
  right: 1.25rem;
  bottom: -1px;
  left: 1.25rem;
  height: 1px;
  background: linear-gradient(90deg, var(--provider-a), var(--provider-b), transparent 84%);
  content: "";
  opacity: 0.45;
}

.search-trigger:hover,
.mobile-map-trigger:hover {
  border-color: var(--provider-a);
  background: var(--provider-a-soft);
}

#course-view {
  max-width: 1480px;
  margin-inline: auto;
}

.decagon-notebook {
  border-left-color: var(--line);
  background:
    linear-gradient(180deg, rgb(47 91 211 / 5%), transparent 190px),
    var(--paper);
}

.notebook-kicker,
.artifact-label,
.track-label,
.console-label,
.stage-label {
  color: var(--ink-soft);
  font: 600 0.64rem/1.35 var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.notebook-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-strong);
}

.notebook-card + .notebook-card {
  margin-top: 0.8rem;
}

.notebook-card h2,
.notebook-card h3 {
  margin: 0.25rem 0 0.45rem;
  font-family: var(--display);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.notebook-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.notebook-next {
  border-left: 4px solid var(--provider-a);
}

.notebook-artifacts {
  display: grid;
  gap: 0.55rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.notebook-artifacts li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.notebook-artifacts li::before {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border: 1px solid var(--line-dark);
  border-radius: 2px;
  content: "";
}

.notebook-artifacts li.complete::before {
  border-color: var(--provider-b);
  background: var(--provider-b);
}

.decagon-home {
  display: grid;
  gap: clamp(4rem, 8vw, 7.5rem);
  padding-bottom: 4rem;
}

.interview-hero {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(520px, 1.45fr);
  gap: clamp(1.6rem, 3vw, 3rem);
  align-items: stretch;
  min-height: min(680px, calc(100vh - 128px));
}

.interview-hero-copy {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  flex-direction: column;
  padding-block: clamp(1.5rem, 4vw, 4.5rem);
}

.interview-hero-copy h1 {
  max-width: 8ch;
  margin: 0.55rem 0 1rem;
  font-family: var(--display);
  font-size: clamp(4.1rem, 7vw, 7.2rem);
  font-weight: 700;
  line-height: 0.79;
  letter-spacing: -0.075em;
}

.interview-hero-copy h1 span {
  display: block;
}

.interview-hero-copy h1 span:last-child {
  margin-left: 0.32em;
  color: var(--provider-a);
}

.interview-hero-copy > p {
  max-width: 40rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.55;
}

.hero-interview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-interview-tags li {
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: rgb(255 255 255 / 56%);
  font: 500 0.68rem/1.3 var(--mono);
}

.interview-hero .hero-actions {
  margin-top: 1.7rem;
}

.source-stamp {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  margin-left: 0.4rem;
  color: var(--ink-soft);
  font: 500 0.64rem/1.3 var(--mono);
}

.source-stamp::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--provider-b);
  content: "";
}

.gateway-race-console,
.gateway-console,
.race-console {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-width: 0;
  overflow: hidden;
  border: 1px solid #1c3949;
  border-radius: 16px;
  background: var(--console);
  color: #eff8fa;
  box-shadow: 11px 11px 0 rgb(47 91 211 / 16%), var(--shadow);
}

.console-chrome {
  display: flex;
  min-height: 50px;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--console-line);
  background: #0c2130;
}

.console-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  font: 600 0.7rem/1.3 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.console-status {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  color: #bcd0d8;
  font: 500 0.64rem/1.3 var(--mono);
}

.console-status::before,
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #49d1bf;
  box-shadow: 0 0 0 4px rgb(73 209 191 / 12%);
  content: "";
}

.console-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--console-line);
}

.console-chip {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid #355466;
  border-radius: 6px;
  background: #102a39;
  color: #d9e6e9;
  font: 500 0.64rem/1.2 var(--mono);
}

.console-chip strong {
  color: #ffffff;
  font-weight: 600;
}

.race-stage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(210px, 0.48fr);
  min-height: 390px;
}

.race-path {
  position: relative;
  display: grid;
  align-content: center;
  gap: 1rem;
  min-width: 0;
  padding: clamp(1rem, 3vw, 2rem);
  border-right: 1px solid var(--console-line);
  background:
    linear-gradient(rgb(88 123 143 / 9%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(88 123 143 / 9%) 1px, transparent 1px);
  background-size: 24px 24px;
}

.race-gateway {
  display: grid;
  width: min(170px, 58%);
  min-height: 68px;
  place-items: center;
  justify-self: center;
  border: 1px solid #9db1bd;
  border-radius: 9px;
  background: #132f3f;
  box-shadow: inset 0 0 0 3px rgb(255 255 255 / 3%);
  font: 600 0.73rem/1.35 var(--mono);
  text-align: center;
}

.race-gateway small {
  display: block;
  color: #9fb4be;
  font-size: 0.6rem;
  font-weight: 500;
}

.provider-lanes {
  display: grid;
  gap: 0.8rem;
}

.provider-lane {
  position: relative;
  display: grid;
  grid-template-columns: minmax(92px, 0.35fr) 1fr auto;
  gap: 0.7rem;
  align-items: center;
  min-height: 76px;
  padding: 0.7rem;
  overflow: hidden;
  border: 1px solid #355466;
  border-radius: 9px;
  background: rgb(12 33 48 / 82%);
}

.provider-lane::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--provider-a);
  content: "";
}

.provider-lane.provider-b::before,
.provider-lane[data-provider="b"]::before {
  background: #35b9aa;
}

.provider-lane.failed::before {
  background: #e15f50;
}

.provider-name {
  font: 600 0.7rem/1.35 var(--mono);
}

.provider-name small {
  display: block;
  margin-top: 0.16rem;
  color: #9fb4be;
  font-size: 0.58rem;
  font-weight: 500;
}

.request-track {
  position: relative;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #1a3a4a;
}

.request-track > span {
  display: block;
  width: var(--request-progress, 66%);
  height: 100%;
  border-radius: inherit;
  background: #6f8cff;
}

.provider-b .request-track > span,
[data-provider="b"] .request-track > span {
  background: #35b9aa;
}

.provider-lane.failed .request-track > span {
  background: #e15f50;
}

.provider-result {
  min-width: 62px;
  color: #d9e6e9;
  font: 600 0.64rem/1.3 var(--mono);
  text-align: right;
}

.decision-trace {
  min-width: 0;
  padding: 1rem;
  overflow: auto;
  background: #0a1d29;
}

.decision-trace h2,
.decision-trace h3 {
  margin: 0.3rem 0 0.8rem;
  color: #ffffff;
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.decision-log {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.decision-log li {
  padding: 0.55rem 0.6rem;
  border-left: 2px solid #3f6275;
  background: rgb(255 255 255 / 3%);
  color: #bdd0d7;
  font: 0.63rem/1.5 var(--mono);
}

.decision-log strong {
  display: block;
  color: #ffffff;
  font-weight: 600;
}

.console-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--console-line);
  background: #0c2130;
}

.console-metric {
  min-width: 0;
  padding: 0.7rem 0.8rem;
}

.console-metric + .console-metric {
  border-left: 1px solid var(--console-line);
}

.console-metric span {
  display: block;
  overflow: hidden;
  color: #90a9b4;
  font: 500 0.57rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.console-metric strong {
  display: block;
  margin-top: 0.18rem;
  color: #ffffff;
  font: 600 clamp(0.88rem, 1.5vw, 1.2rem)/1.2 var(--mono);
}

.section-heading h2 {
  max-width: 16ch;
}

.interview-track-grid,
.track-grid,
.readiness-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.track-card,
.readiness-card {
  position: relative;
  display: flex;
  min-height: 285px;
  padding: 1.25rem;
  overflow: hidden;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper-strong);
  box-shadow: 0 7px 22px rgb(19 43 58 / 6%);
  color: var(--ink);
  text-align: left;
}

button.track-card:hover,
button.readiness-card:hover {
  transform: translateY(-2px);
  border-color: var(--track-color, var(--provider-a));
  box-shadow: 0 12px 28px rgb(19 43 58 / 10%);
}

.track-card::before,
.readiness-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: var(--track-color, var(--provider-a));
  content: "";
}

.track-card[data-track="gateway"],
.readiness-card[data-track="gateway"] {
  --track-color: var(--provider-b);
}

.track-card[data-track="crawler"],
.readiness-card[data-track="crawler"] {
  --track-color: var(--queue);
}

.track-card-head,
.readiness-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.track-time {
  color: var(--ink-soft);
  font: 500 0.67rem/1.3 var(--mono);
}

.track-card h3,
.readiness-card h3 {
  max-width: 12ch;
  margin: 0.8rem 0 0.45rem;
  font-family: var(--display);
  font-size: clamp(1.9rem, 3vw, 2.7rem);
  line-height: 0.94;
  letter-spacing: -0.045em;
}

.track-card p,
.readiness-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.gate-list {
  display: grid;
  gap: 0.4rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.gate-list li {
  display: grid;
  grid-template-columns: 15px 1fr auto;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.74rem;
}

.gate-list li::before {
  width: 11px;
  height: 11px;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  content: "";
}

.gate-list li.complete::before {
  border-color: var(--provider-b);
  background: var(--provider-b);
  box-shadow: inset 0 0 0 2px #ffffff;
}

.gate-list li span:last-child {
  color: var(--ink-soft);
  font: 500 0.62rem/1.3 var(--mono);
}

.readiness-state {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.28rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font: 600 0.62rem/1.2 var(--mono);
}

.readiness-state.ready {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
  color: #005c54;
}

.dependency-map {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: stretch;
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper-strong);
}

.dependency-node {
  display: grid;
  min-height: 112px;
  padding: 1rem;
  place-content: center;
  border: 1px solid var(--line-dark);
  border-radius: 9px;
  text-align: center;
}

.dependency-node strong {
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1;
}

.dependency-node span {
  margin-top: 0.35rem;
  color: var(--ink-soft);
  font: 500 0.65rem/1.3 var(--mono);
}

.dependency-arrow {
  display: grid;
  min-width: 50px;
  place-items: center;
  color: var(--provider-a);
  font-size: 1.7rem;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.artifact-card {
  min-height: 122px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.artifact-card strong {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1.05;
}

.artifact-card p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.module-view,
.lesson-view,
.quiz-view,
.lab-view,
.mock-view {
  --module-color: var(--track-color, var(--provider-a));
  --module-soft: color-mix(in srgb, var(--module-color) 12%, white);
}

.module-hero {
  overflow: hidden;
  background:
    linear-gradient(110deg, var(--module-soft), transparent 64%),
    var(--paper-strong);
}

.module-hero::after {
  position: absolute;
  right: -52px;
  bottom: -72px;
  width: 190px;
  height: 190px;
  border: 26px solid color-mix(in srgb, var(--module-color) 15%, transparent);
  border-radius: 50%;
  content: "";
}

.lesson-header h1 {
  max-width: 13ch;
}

.lesson-kicker span:first-child {
  border-color: var(--module-color);
  background: var(--module-soft);
  color: var(--ink);
}

.prediction-card {
  border-left-color: var(--module-color);
}

.interview-callout,
.answer-frame,
.failure-injection {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--provider-a);
  border-radius: 9px;
  background: var(--paper-strong);
}

.interview-callout h3,
.answer-frame h3,
.failure-injection h3 {
  margin: 0 0 0.35rem;
  font-family: var(--display);
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: -0.025em;
}

.interview-callout p,
.answer-frame p,
.failure-injection p {
  margin: 0;
  color: var(--ink-soft);
}

.answer-frame {
  border-left-color: var(--provider-b);
  background: var(--provider-b-soft);
}

.failure-injection {
  border-left-color: var(--fault);
  background: var(--fault-soft);
}

.decision-table-wrap,
.tradeoff-table-wrap,
.benchmark-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.decision-table,
.tradeoff-table,
.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.decision-table th,
.tradeoff-table th,
.benchmark-table th {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--line-dark);
  background: #edf3f5;
  font: 600 0.62rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

.decision-table td,
.tradeoff-table td,
.benchmark-table td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.decision-table tr:last-child td,
.tradeoff-table tr:last-child td,
.benchmark-table tr:last-child td {
  border-bottom: 0;
}

.diagram-shell,
.systems-diagram {
  padding: clamp(1rem, 2.5vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: 11px;
  background:
    linear-gradient(rgb(19 43 58 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(19 43 58 / 4%) 1px, transparent 1px),
    var(--paper-strong);
  background-size: 24px 24px;
}

.diagram-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.diagram-head h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.45rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.diagram-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  color: var(--ink-soft);
  font: 500 0.62rem/1.3 var(--mono);
}

.diagram-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.diagram-legend i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--provider-a);
}

.diagram-legend span:nth-child(2) i {
  background: var(--provider-b);
}

.diagram-legend span:nth-child(3) i {
  background: var(--fault);
}

.diagram-readout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  margin-top: 1rem;
  padding: 0.75rem;
  border-top: 1px solid var(--line);
  background: rgb(245 248 250 / 82%);
}

.diagram-readout > span {
  color: var(--ink-soft);
  font: 600 0.62rem/1.3 var(--mono);
  text-transform: uppercase;
}

.diagram-readout p {
  margin: 0;
  font-size: 0.82rem;
}

.sequence-diagram {
  display: grid;
  grid-template-columns: repeat(var(--lane-count, 4), minmax(110px, 1fr));
  min-width: 560px;
}

.sequence-lane {
  position: relative;
  min-height: 250px;
  border-left: 1px dashed var(--line-dark);
  text-align: center;
}

.sequence-lane:last-child {
  border-right: 1px dashed var(--line-dark);
}

.sequence-lane > strong {
  display: inline-block;
  min-height: 35px;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: var(--paper-strong);
  font: 600 0.66rem/1.3 var(--mono);
}

.sequence-message {
  position: absolute;
  top: var(--message-top, 72px);
  left: var(--message-left, 5%);
  display: flex;
  width: var(--message-width, 90%);
  align-items: center;
  gap: 0.35rem;
  color: var(--ink-soft);
  font: 500 0.59rem/1.3 var(--mono);
}

.sequence-message::after {
  height: 1px;
  flex: 1;
  background: currentColor;
  content: "";
}

.state-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding-block: 1.5rem;
}

.state-node,
.diagram-node,
.topology-node {
  min-width: 110px;
  min-height: 58px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: var(--paper-strong);
  color: var(--ink);
  text-align: center;
}

button.state-node:hover,
button.diagram-node:hover,
button.topology-node:hover,
.state-node.active,
.diagram-node.active,
.topology-node.active,
[aria-pressed="true"].state-node,
[aria-pressed="true"].diagram-node,
[aria-pressed="true"].topology-node {
  border-color: var(--module-color, var(--provider-a));
  background: var(--module-soft, var(--provider-a-soft));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--module-color, var(--provider-a)) 12%, transparent);
}

.state-node strong,
.diagram-node strong,
.topology-node strong {
  display: block;
  font: 600 0.72rem/1.3 var(--mono);
}

.state-node small,
.diagram-node small,
.topology-node small {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.65rem;
}

.state-arrow,
.diagram-arrow {
  flex: 0 0 auto;
  color: var(--line-dark);
  font-size: 1.25rem;
}

.topology-diagram,
.architecture-board {
  display: grid;
  grid-template-columns: repeat(var(--topology-columns, 4), minmax(120px, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

.topology-lane,
.architecture-lane {
  display: grid;
  align-content: start;
  gap: 0.55rem;
  min-height: 220px;
  padding: 0.65rem;
  border: 1px dashed var(--line-dark);
  border-radius: 8px;
  background: rgb(255 255 255 / 54%);
}

.topology-lane > h4,
.architecture-lane > h4 {
  margin: 0 0 0.25rem;
  color: var(--ink-soft);
  font: 600 0.61rem/1.3 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.simulator-shell,
.gateway-simulator,
.crawler-simulator {
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.simulator-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--navy);
  color: #ffffff;
}

.simulator-head h2 {
  margin: 0.15rem 0 0;
  font-family: var(--display);
  font-size: 1.55rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.simulator-head .stage-label {
  color: rgb(235 245 248 / 62%);
}

.simulator-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.simulator-head .small-button,
.simulator-head .secondary-button {
  border-color: rgb(255 255 255 / 28%);
  background: rgb(255 255 255 / 8%);
  color: #ffffff;
}

.simulator-head .primary-button {
  border-color: #6f8cff;
  background: #6f8cff;
  color: #071722;
}

.simulator-grid {
  display: grid;
  grid-template-columns: minmax(250px, 0.52fr) minmax(0, 1.48fr);
  min-height: 560px;
}

.simulator-controls {
  padding: 1rem;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: #edf3f5;
}

.simulator-stage {
  min-width: 0;
  padding: 1rem;
  background: var(--paper);
}

.control-section + .control-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.control-section h3 {
  margin: 0 0 0.65rem;
  font: 600 0.66rem/1.3 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.control-field {
  display: grid;
  gap: 0.28rem;
  min-width: 0;
}

.control-field.full {
  grid-column: 1 / -1;
}

.control-field > span,
.control-field > label {
  color: var(--ink-soft);
  font: 600 0.62rem/1.3 var(--mono);
}

.control-field input,
.control-field select,
.control-field textarea,
.notes-area {
  width: 100%;
  min-height: 42px;
  padding: 0.5rem 0.55rem;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: var(--paper-strong);
}

.control-field textarea,
.notes-area {
  min-height: 118px;
  resize: vertical;
}

.range-field {
  display: grid;
  grid-template-columns: 1fr 62px;
  gap: 0.5rem;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  min-height: 30px;
  accent-color: var(--provider-a);
}

.control-output {
  min-width: 58px;
  padding: 0.25rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper-strong);
  font: 600 0.66rem/1.3 var(--mono);
  text-align: center;
}

.simulation-tabs {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.simulation-tab {
  min-height: 44px;
  border: 0;
  border-right: 1px solid var(--line);
  background: #edf3f5;
  font: 600 0.64rem/1.3 var(--mono);
}

.simulation-tab:last-child {
  border-right: 0;
}

.simulation-tab[aria-selected="true"] {
  background: var(--paper-strong);
  box-shadow: inset 0 -3px var(--provider-a);
}

.metrics-grid,
.simulation-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}

.metric-card {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-strong);
}

.metric-card span {
  display: block;
  overflow: hidden;
  color: var(--ink-soft);
  font: 500 0.59rem/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.metric-card strong {
  display: block;
  margin-top: 0.3rem;
  font: 600 clamp(1rem, 2vw, 1.35rem)/1.1 var(--mono);
}

.metric-card.good strong {
  color: var(--provider-b);
}

.metric-card.bad strong {
  color: var(--fault);
}

.metric-card.warn strong {
  color: var(--queue);
}

.simulation-status {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin-top: 0.75rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper-strong);
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.simulation-status::before {
  width: 8px;
  height: 8px;
  margin-top: 0.32rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--provider-b);
  content: "";
}

.simulation-status.warning {
  border-color: #dfad5f;
  background: var(--queue-soft);
  color: #704200;
}

.simulation-status.warning::before {
  background: var(--queue);
}

.simulation-status.error {
  border-color: #dc8178;
  background: var(--fault-soft);
  color: #74231f;
}

.simulation-status.error::before {
  background: var(--fault);
}

.waterfall {
  margin-top: 0.8rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-strong);
}

.waterfall-head,
.waterfall-row {
  display: grid;
  grid-template-columns: 68px 58px minmax(180px, 1fr) 72px;
  gap: 0.55rem;
  align-items: center;
  min-height: 40px;
  padding: 0.4rem 0.6rem;
}

.waterfall-head {
  border-bottom: 1px solid var(--line-dark);
  background: #edf3f5;
  color: var(--ink-soft);
  font: 600 0.57rem/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.waterfall-row + .waterfall-row {
  border-top: 1px solid var(--line);
}

.waterfall-row > span {
  font: 500 0.62rem/1.3 var(--mono);
}

.waterfall-track {
  position: relative;
  height: 18px;
  border-radius: 4px;
  background:
    linear-gradient(90deg, rgb(19 43 58 / 6%) 1px, transparent 1px),
    #edf3f5;
  background-size: 10% 100%;
}

.waterfall-bar {
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: var(--bar-left, 0%);
  width: var(--bar-width, 46%);
  min-width: 3px;
  border-radius: 3px;
  background: var(--provider-a);
}

.waterfall-bar.provider-b {
  background: var(--provider-b);
}

.waterfall-bar.failed {
  background: repeating-linear-gradient(135deg, var(--fault), var(--fault) 5px, #e98379 5px, #e98379 9px);
}

.event-log {
  max-height: 240px;
  margin: 0.8rem 0 0;
  padding: 0;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0c2130;
  color: #c4d5da;
  list-style: none;
}

.event-log li {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 0.6rem;
  padding: 0.48rem 0.6rem;
  font: 0.62rem/1.45 var(--mono);
}

.event-log li + li {
  border-top: 1px solid var(--console-line);
}

.event-log time {
  color: #7f9ba7;
}

.benchmark-notebook {
  margin-top: 1.2rem;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: var(--paper-strong);
}

.benchmark-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

.benchmark-head h2 {
  margin: 0.2rem 0 0;
  font-family: var(--display);
  font-size: 1.55rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.benchmark-empty {
  display: grid;
  min-height: 180px;
  padding: 2rem;
  place-items: center;
  color: var(--ink-soft);
  text-align: center;
}

.benchmark-table tr.selected td {
  background: var(--provider-a-soft);
}

.benchmark-note {
  width: min(260px, 28vw);
  min-height: 52px;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  font-size: 0.72rem;
  resize: vertical;
}

.comparison-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.8rem;
  align-items: center;
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--line);
  background: #edf3f5;
}

.comparison-run {
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper-strong);
}

.comparison-run strong {
  display: block;
  font: 600 0.72rem/1.3 var(--mono);
}

.comparison-run span {
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.crawler-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
  gap: 0.8rem;
}

.crawl-frontier,
.host-queues,
.crawl-pipeline,
.crawl-inspector {
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-strong);
}

.host-queues {
  display: grid;
  gap: 0.6rem;
}

.host-queue {
  display: grid;
  grid-template-columns: minmax(90px, 0.3fr) 1fr auto;
  gap: 0.55rem;
  align-items: center;
  min-height: 60px;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
}

.host-queue.blocked {
  border-color: #d9a54d;
  background: var(--queue-soft);
}

.host-queue.violated {
  border-color: #d36b63;
  background: var(--fault-soft);
}

.host-name {
  overflow: hidden;
  font: 600 0.66rem/1.3 var(--mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.url-queue {
  display: flex;
  min-width: 0;
  gap: 0.28rem;
  overflow: hidden;
}

.url-chip {
  max-width: 120px;
  padding: 0.25rem 0.4rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper-strong);
  font: 500 0.58rem/1.25 var(--mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.politeness-clock {
  color: var(--ink-soft);
  font: 600 0.61rem/1.3 var(--mono);
  white-space: nowrap;
}

.crawl-pipeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(80px, 1fr));
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.crawl-step {
  position: relative;
  min-height: 72px;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  text-align: center;
}

.crawl-step + .crawl-step::before {
  position: absolute;
  top: 50%;
  left: -0.48rem;
  color: var(--line-dark);
  content: "›";
  transform: translate(-50%, -50%);
}

.crawl-step strong {
  display: block;
  font: 600 0.63rem/1.3 var(--mono);
}

.crawl-step small {
  display: block;
  margin-top: 0.25rem;
  color: var(--ink-soft);
  font-size: 0.62rem;
}

.crawl-step.active {
  border-color: var(--queue);
  background: var(--queue-soft);
}

.frontier-meter {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.65rem;
  font: 500 0.62rem/1.3 var(--mono);
}

.frontier-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.frontier-track > span {
  display: block;
  width: var(--frontier-fill, 50%);
  height: 100%;
  border-radius: inherit;
  background: var(--queue);
}

.architecture-builder {
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: var(--paper-strong);
}

.component-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
  background: #edf3f5;
}

.component-chip {
  min-height: 38px;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: var(--paper-strong);
  font: 600 0.63rem/1.3 var(--mono);
}

.component-chip:hover,
.component-chip[aria-pressed="true"] {
  border-color: var(--provider-a);
  background: var(--provider-a-soft);
}

.architecture-canvas {
  padding: 1rem;
  background:
    linear-gradient(rgb(19 43 58 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(19 43 58 / 4%) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
}

.failure-injector {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: center;
  margin-top: 0.8rem;
  padding: 0.75rem;
  border: 1px solid #dc8178;
  border-radius: 8px;
  background: var(--fault-soft);
}

.failure-injector strong {
  display: block;
  color: #74231f;
  font-family: var(--display);
  font-size: 1.05rem;
}

.failure-injector p {
  margin: 0.15rem 0 0;
  color: #74231f;
  font-size: 0.72rem;
}

.mock-view {
  display: grid;
  gap: 1.2rem;
}

.mock-header,
.mock-brief {
  padding: clamp(1.2rem, 3vw, 2.2rem);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper-strong);
}

.mock-header {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(110deg, var(--module-soft, var(--provider-a-soft)), transparent 68%),
    var(--paper-strong);
}

.mock-header h1 {
  max-width: 12ch;
  margin: 0.45rem 0 0.65rem;
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.86;
  letter-spacing: -0.06em;
}

.mock-header p {
  max-width: 50rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.mock-control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: var(--navy);
  color: #ffffff;
}

.mock-timer {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.mock-timer strong {
  font: 600 clamp(1.7rem, 4vw, 2.7rem)/1 var(--mono);
  letter-spacing: -0.04em;
}

.mock-timer span {
  color: rgb(235 245 248 / 64%);
  font: 500 0.62rem/1.3 var(--mono);
  text-transform: uppercase;
}

.mock-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1rem;
}

.prompt-card,
.rubric-panel {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-strong);
}

.prompt-card h2,
.rubric-panel h2 {
  margin: 0.3rem 0 0.7rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.prompt-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 1rem 0;
}

.prompt-fact {
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
}

.prompt-fact span {
  display: block;
  color: var(--ink-soft);
  font: 500 0.59rem/1.3 var(--mono);
  text-transform: uppercase;
}

.prompt-fact strong {
  display: block;
  margin-top: 0.18rem;
  font: 600 0.78rem/1.3 var(--mono);
}

.rubric-grid {
  display: grid;
  gap: 0.65rem;
}

.rubric-item {
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.rubric-item-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
}

.rubric-item h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.05rem;
  line-height: 1;
}

.rubric-item p {
  margin: 0.32rem 0 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.score-control {
  display: inline-flex;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
}

.score-control button {
  width: 32px;
  min-height: 32px;
  border: 0;
  border-right: 1px solid var(--line);
  background: var(--paper-strong);
  font: 600 0.66rem/1 var(--mono);
}

.score-control button:last-child {
  border-right: 0;
}

.score-control button[aria-pressed="true"] {
  background: var(--provider-a);
  color: #ffffff;
}

.spoken-check {
  padding: 1rem;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: var(--paper-strong);
}

.spoken-check-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.spoken-check h2 {
  max-width: 28ch;
  margin: 0.35rem 0 0;
  font-family: var(--display);
  font-size: clamp(1.7rem, 4vw, 2.45rem);
  line-height: 1;
  letter-spacing: -0.035em;
}

.spoken-rubric {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.spoken-rubric li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 0.55rem;
  align-items: start;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  font-size: 0.76rem;
}

.spoken-rubric li::before {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: var(--provider-b-soft);
  color: var(--provider-b);
  content: "✓";
  font: 600 0.66rem/1 var(--mono);
}

.quiz-option.correct {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
}

.quiz-option.incorrect {
  border-color: var(--fault);
  background: var(--fault-soft);
}

.quiz-dot.correct {
  border-color: var(--provider-b);
  background: var(--provider-b);
}

.quiz-dot.incorrect {
  border-color: var(--fault);
  background: var(--fault);
}

.code-lab {
  border-color: var(--line-dark);
  box-shadow: var(--shadow);
}

.code-lab-head {
  background: var(--navy);
  color: #ffffff;
}

.code-lab-head .eyebrow {
  color: rgb(235 245 248 / 62%);
}

.code-editor {
  min-height: 430px;
  background: #081923;
  color: #ddecf0;
  caret-color: #6f8cff;
}

.test-panel {
  background: #0c2130;
  color: #ddecf0;
}

.test-item.pass {
  color: #62d8c9;
}

.test-item.fail {
  color: #f0877d;
}

.search-dialog {
  border-color: var(--line-dark);
  background: var(--paper-strong);
  box-shadow: 0 30px 90px rgb(8 25 35 / 38%);
}

.search-dialog::backdrop {
  background: rgb(8 25 35 / 62%);
  backdrop-filter: blur(3px);
}

.search-result:hover,
.search-result.active,
.search-result[aria-selected="true"] {
  border-color: var(--provider-a);
  background: var(--provider-a-soft);
}

.search-result-index {
  background: var(--navy);
}

.search-results .search-result {
  grid-template-columns: minmax(0, 1fr) auto;
}

.search-results .search-result > span {
  overflow: hidden;
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-results .search-result > small {
  color: var(--ink-soft);
  font: 600 0.58rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.search-empty {
  display: grid;
  min-height: 150px;
  padding: 1.5rem;
  place-content: center;
  color: var(--ink-soft);
  text-align: center;
}

.toast {
  background: var(--navy);
  box-shadow: 5px 5px 0 var(--provider-b);
}

.noscript-message {
  position: fixed;
  z-index: 500;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  padding: 0.8rem 1rem;
  border: 1px solid #dc8178;
  border-radius: 8px;
  background: var(--fault-soft);
  color: #74231f;
  font-weight: 600;
  text-align: center;
}

.mobile-action-bar {
  display: none;
}

.nav-lane {
  padding: 0.55rem 0 0.4rem;
}

.nav-lane + .nav-lane {
  border-top: 1px solid rgb(255 255 255 / 10%);
}

.nav-lane-label {
  padding: 0.3rem 1rem 0.35rem 1.2rem;
  color: rgb(235 245 248 / 54%);
  font: 600 0.6rem/1.3 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.decagon-hero {
  display: grid;
  grid-template-columns: minmax(270px, 0.76fr) minmax(0, 1.5fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: center;
  min-height: min(690px, calc(100vh - 116px));
}

.decagon-hero .hero-copy {
  max-width: 640px;
}

.decagon-hero .hero-title {
  max-width: 10ch;
  margin: 0.55rem 0 1rem;
  font-size: clamp(4rem, 6.6vw, 7rem);
  line-height: 0.78;
}

.decagon-hero .hero-title span {
  display: block;
  white-space: nowrap;
}

.decagon-hero .hero-title span:nth-child(2) {
  margin-left: 0.22em;
  color: var(--provider-a);
}

.decagon-hero .hero-title span:nth-child(3) {
  margin-left: 0.48em;
  color: var(--provider-b);
}

.decagon-hero .hero-lede {
  max-width: 39rem;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

.decagon-hero .hero-actions {
  margin-top: 1.6rem;
}

.hero-console-wrap {
  min-width: 0;
  align-self: stretch;
  padding-block: 1rem;
}

.gateway-console {
  grid-template-rows: auto 1fr;
  min-height: 100%;
}

.console-title-row {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--console-line);
  background: #0c2130;
}

.console-title-row .eyebrow {
  color: #86a5b2;
}

.console-title-row h2 {
  margin: 0.2rem 0 0;
  color: #ffffff;
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.2vw, 1.8rem);
  line-height: 1;
  letter-spacing: -0.035em;
}

.seed-chip {
  flex: 0 0 auto;
  padding: 0.28rem 0.5rem;
  border: 1px solid #3d5d6e;
  border-radius: 999px;
  background: #102a39;
  color: #bcd0d8;
  font: 600 0.61rem/1.3 var(--mono);
}

.gateway-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.54fr) minmax(0, 1.46fr);
  min-height: 0;
}

.gateway-console .sim-controls {
  display: grid;
  align-content: start;
  gap: 0.72rem;
  min-width: 0;
  padding: 0.9rem;
  overflow-y: auto;
  border-right: 1px solid var(--console-line);
  background: #0d2432;
}

.sim-controls > label,
.sim-controls .control-pair > label,
.capacity-inputs > label,
.crawler-controls > label {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
  color: var(--ink-soft);
  font: 600 0.62rem/1.3 var(--mono);
}

.gateway-console .sim-controls > label,
.gateway-console .sim-controls .control-pair > label {
  color: #9fb4be;
}

.sim-controls select,
.sim-controls input,
.capacity-inputs input,
.decision-card select,
.failure-injector select {
  width: 100%;
  min-height: 40px;
  padding: 0.45rem 0.5rem;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: var(--paper-strong);
  color: var(--ink);
  font: 500 0.72rem/1.3 var(--mono);
}

.gateway-console .sim-controls select,
.gateway-console .sim-controls input {
  border-color: #3d5d6e;
  background: #102d3d;
  color: #ffffff;
}

.control-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.sim-actions,
.design-actions,
.editor-actions,
.notebook-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.gateway-console .sim-actions {
  margin-top: 0.15rem;
}

.gateway-console .text-button {
  color: #b9cdd5;
}

.sim-output {
  min-width: 0;
  padding: 0.9rem;
  overflow: auto;
  background: var(--console);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.45rem;
}

.metric-strip > div {
  min-width: 0;
  padding: 0.55rem 0.6rem;
  border: 1px solid var(--console-line);
  border-radius: 6px;
  background: #0d2635;
}

.metric-strip > div > span {
  display: block;
  overflow: hidden;
  color: #84a1ad;
  font: 500 0.55rem/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.metric-strip > div > strong {
  display: block;
  margin-top: 0.22rem;
  color: #ffffff;
  font: 600 clamp(0.8rem, 1.5vw, 1.05rem)/1.15 var(--mono);
}

.provider-state-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0.55rem;
}

.provider-state {
  padding: 0.6rem;
  border: 1px solid #365668;
  border-left: 4px solid var(--provider-a);
  border-radius: 7px;
  background: #0c2130;
}

.provider-state.provider-b {
  border-left-color: #35b9aa;
}

.provider-state > div {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #ffffff;
  font: 600 0.68rem/1.3 var(--mono);
}

.provider-symbol {
  color: #6f8cff;
}

.provider-b .provider-symbol {
  color: #35b9aa;
}

.provider-state dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
  margin: 0.55rem 0 0;
}

.provider-state dl div {
  min-width: 0;
}

.provider-state dt {
  color: #7897a4;
  font: 500 0.52rem/1.3 var(--mono);
  text-transform: uppercase;
}

.provider-state dd {
  margin: 0.12rem 0 0;
  overflow: hidden;
  color: #dce9ec;
  font: 600 0.61rem/1.3 var(--mono);
  text-overflow: ellipsis;
}

.request-waterfall {
  display: grid;
  gap: 0.25rem;
  margin-top: 0.6rem;
  padding: 0.55rem;
  overflow: hidden;
  border: 1px solid var(--console-line);
  border-radius: 7px;
  background: #0a1d29;
}

.waterfall-axis {
  display: flex;
  justify-content: space-between;
  padding-left: 52px;
  color: #7694a1;
  font: 500 0.52rem/1.3 var(--mono);
  text-transform: uppercase;
}

.request-waterfall .waterfall-row {
  grid-template-columns: 42px minmax(120px, 1fr) 72px;
  min-height: 25px;
  padding: 0.18rem 0;
  border: 0;
}

.request-waterfall .waterfall-row + .waterfall-row {
  border: 0;
}

.request-label,
.request-outcome {
  color: #91aab5;
  font: 500 0.55rem/1.3 var(--mono);
}

.request-outcome {
  overflow: hidden;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.request-outcome[class*="success"],
.request-outcome[class*="complete"] {
  color: #58d6c6;
}

.request-outcome[class*="fail"],
.request-outcome[class*="drop"],
.request-outcome[class*="timeout"] {
  color: #ef867b;
}

.request-waterfall .request-track {
  height: 18px;
  overflow: hidden;
  border: 1px solid #2a4757;
  border-radius: 4px;
  background:
    linear-gradient(90deg, rgb(115 148 164 / 12%) 1px, transparent 1px),
    #102a39;
  background-size: 10% 100%;
}

.attempt-bar {
  position: absolute;
  top: 3px;
  bottom: 3px;
  min-width: 3px;
  overflow: hidden;
  border-radius: 3px;
  background: #6f8cff;
  color: #ffffff;
  font: 600 0.48rem/12px var(--mono);
  text-align: center;
}

.attempt-bar.provider-b {
  background: #35b9aa;
  color: #071c1a;
}

.sim-table-details {
  margin-top: 0.6rem;
  overflow: hidden;
  border: 1px solid var(--console-line);
  border-radius: 7px;
  background: #0c2130;
}

.sim-table-details summary {
  min-height: 40px;
  padding: 0.6rem 0.7rem;
  color: #c5d6dc;
  cursor: pointer;
  font: 600 0.62rem/1.3 var(--mono);
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
}

.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper-strong);
  color: var(--ink);
  font-size: 0.72rem;
}

.table-scroll th,
.table-scroll td {
  padding: 0.58rem 0.65rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.table-scroll th {
  background: #edf3f5;
  font: 600 0.58rem/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.sim-warnings {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.sim-warnings p {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 0.45rem;
  align-items: start;
  margin: 0;
  padding: 0.5rem;
  border: 1px solid #8c6336;
  border-radius: 6px;
  background: #382718;
  color: #f2d9b4;
  font-size: 0.66rem;
}

.sim-warnings p span {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 50%;
  background: #ca8a32;
  color: #181007;
  font: 700 0.62rem/1 var(--mono);
}

.status-pill {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-soft);
  font: 600 0.59rem/1.2 var(--mono);
}

.status-pill.status-ready {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
  color: #005b53;
}

.status-pill.status-needs-another-rep {
  border-color: #d19a40;
  background: var(--queue-soft);
  color: #704200;
}

.track-glyph {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--track-color) 58%, var(--line));
  border-radius: 9px;
  background: color-mix(in srgb, var(--track-color) 10%, white);
  color: var(--track-color);
  font: 600 1rem/1 var(--mono);
}

.readiness-record {
  display: grid;
  gap: 0.42rem;
  margin: 1rem 0;
}

.readiness-record div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

.readiness-record dt {
  color: var(--ink-soft);
  font-size: 0.69rem;
}

.readiness-record dd {
  margin: 0;
  font: 600 0.66rem/1.3 var(--mono);
}

.mini-progress {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.mini-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--track-color);
}

.text-button,
.card-link {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border: 0;
  background: transparent;
  color: var(--cobalt);
  font: 600 0.7rem/1.3 var(--mono);
  text-align: left;
}

.text-button:hover,
.card-link:hover {
  color: var(--ink);
}

.dependency-section .dependency-map {
  grid-template-columns: minmax(150px, 0.8fr) auto minmax(180px, 1fr) auto minmax(170px, 0.9fr);
}

.dependency-stack {
  display: grid;
  gap: 0.45rem;
}

.dependency-stack .dependency-node {
  min-height: 88px;
}

.dependency-arrow.vertical {
  min-height: 24px;
  font-size: 1.1rem;
}

.dependency-branch {
  display: grid;
  place-items: center;
  color: var(--queue);
  font-size: 1.7rem;
}

.dependency-node.coding {
  border-color: var(--provider-a);
  background: var(--provider-a-soft);
}

.dependency-node.gateway {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
}

.dependency-node.crawler {
  border-color: #d39a3c;
  background: var(--queue-soft);
}

.module-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.module-card-grid .module-card {
  display: flex;
  min-height: 310px;
  padding: 1.15rem;
  flex-direction: column;
}

.module-card-grid .module-card h3 {
  margin: 0.85rem 0 0.45rem;
  font-size: clamp(1.65rem, 2.5vw, 2.2rem);
}

.module-card-grid .module-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.module-card-top,
.module-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--ink-soft);
  font: 600 0.6rem/1.3 var(--mono);
  text-transform: uppercase;
}

.module-number {
  display: grid;
  width: 35px;
  height: 35px;
  place-items: center;
  border-radius: 7px;
  background: var(--module-color);
  color: #ffffff;
}

.module-track {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.module-card-meta {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.57rem;
}

.module-card-grid .card-link {
  margin-top: 0.45rem;
}

.module-progress-card {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(190px, 100%);
  min-height: 150px;
  padding: 1rem;
  place-content: center;
  justify-self: end;
  border: 1px solid var(--navy);
  border-radius: 12px;
  background: var(--navy);
  color: #ffffff;
  text-align: center;
  box-shadow: 6px 6px 0 var(--module-color);
}

.module-progress-card strong {
  font: 600 clamp(2.1rem, 5vw, 3.7rem)/1 var(--mono);
  letter-spacing: -0.06em;
}

.module-progress-card span {
  margin-top: 0.4rem;
  color: #acc1ca;
  font: 500 0.63rem/1.3 var(--mono);
}

.outcome-panel {
  margin-top: 1.2rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--module-color);
  border-radius: 10px;
  background: var(--paper-strong);
}

.outcome-panel h2 {
  margin: 0.35rem 0 0.7rem;
  font-family: var(--display);
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: -0.035em;
}

.outcome-panel ul {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding-left: 1.2rem;
}

.outcome-panel li {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.lesson-list {
  margin-top: 2.5rem;
}

.lesson-row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto auto;
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  min-height: 88px;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
  color: var(--ink);
  text-align: left;
}

.lesson-row + .lesson-row {
  margin-top: 0.55rem;
}

.lesson-row:hover {
  transform: translateX(3px);
  border-color: var(--module-color);
}

.lesson-state {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: var(--paper);
  font: 600 0.64rem/1 var(--mono);
}

.lesson-state.complete {
  border-color: var(--provider-b);
  background: var(--provider-b);
  color: #ffffff;
}

.lesson-row-copy strong {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1;
}

.lesson-row-copy small {
  display: block;
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.lesson-duration {
  color: var(--ink-soft);
  font: 500 0.62rem/1.3 var(--mono);
}

.module-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 2.5rem;
}

.action-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: var(--paper-strong);
}

.action-index {
  display: grid;
  min-height: 42px;
  place-items: center;
  border-radius: 7px;
  background: var(--module-color);
  color: #ffffff;
  font: 600 0.59rem/1 var(--mono);
}

.action-card h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1;
}

.action-card p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.action-card button {
  grid-column: 2;
  justify-self: start;
}

.lesson-view .lesson-header {
  display: block;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-dark);
}

.lesson-view .lesson-header h1 {
  max-width: 14ch;
  margin: 0.65rem 0 0.8rem;
}

.lesson-summary {
  max-width: 50rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.lesson-view .prediction-card {
  margin-top: 1.3rem;
}

.lesson-view .prediction-card > span {
  display: block;
  color: var(--module-color);
  font: 600 0.62rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lesson-view .prediction-card p {
  margin: 0.3rem 0 0;
}

.lesson-body {
  display: grid;
  gap: 2rem;
  max-width: 880px;
  margin: 0 auto;
  padding-block: 2.5rem;
}

.prose-section h2,
.sources-section h2 {
  max-width: 16ch;
  margin: 0.4rem 0 1rem;
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
}

.prose-section p {
  margin: 0 0 1rem;
  font-size: 0.96rem;
}

.mechanics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.mechanics-grid article {
  position: relative;
  min-height: 150px;
  padding: 0.9rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.mechanics-grid h3 {
  margin: 0.5rem 0 0.35rem;
  font-family: var(--display);
  font-size: 1.3rem;
  line-height: 1;
}

.mechanics-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.mechanic-mark {
  display: block;
  width: 24px;
  height: 4px;
  border-radius: 99px;
  background: var(--module-color);
}

.lesson-visual {
  margin: 0;
  padding: 1rem;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background:
    linear-gradient(rgb(19 43 58 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(19 43 58 / 4%) 1px, transparent 1px),
    var(--paper-strong);
  background-size: 24px 24px;
}

.lesson-visual figcaption strong {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--display);
  font-size: 1.45rem;
  line-height: 1;
}

.visual-flow {
  display: flex;
  align-items: stretch;
  gap: 0.45rem;
  margin-top: 1rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.visual-flow .flow-node {
  display: grid;
  min-width: 116px;
  min-height: 76px;
  padding: 0.55rem;
  place-content: center;
  flex: 1;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: var(--paper);
  text-align: center;
}

.visual-flow .flow-node strong {
  font: 600 0.67rem/1.3 var(--mono);
}

.visual-flow .flow-node span {
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.64rem;
}

.visual-flow .flow-arrow {
  display: grid;
  place-items: center;
  color: var(--module-color);
}

.deep-section {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.deep-section summary {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  font-family: var(--display);
  font-size: 1.08rem;
  font-weight: 600;
}

.deep-section summary small {
  color: var(--ink-soft);
  font: 500 0.6rem/1.3 var(--mono);
}

.deep-section > div {
  padding: 0 0.85rem 0.85rem;
  color: var(--ink-soft);
}

.deep-section p {
  margin: 0 0 0.75rem;
}

.lesson-callouts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.lesson-callouts .bridge-card,
.lesson-callouts .failure-card {
  padding: 0.9rem;
}

.lesson-callouts aside > span {
  color: var(--ink-soft);
  font: 600 0.59rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lesson-callouts h3 {
  margin: 0.4rem 0 0.35rem;
}

.quick-check {
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid var(--navy);
  border-radius: 11px;
  background: var(--navy);
  color: #ffffff;
  box-shadow: 7px 7px 0 var(--module-color);
}

.check-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.quick-check .eyebrow {
  color: #9db4be;
}

.completion-chip {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border: 1px solid #496a7b;
  border-radius: 999px;
  color: #bcd0d8;
  font: 600 0.58rem/1.2 var(--mono);
}

.completion-chip.complete {
  border-color: #35b9aa;
  background: rgb(53 185 170 / 15%);
  color: #74ded1;
}

.quick-check h2 {
  max-width: 25ch;
  margin: 0.65rem 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.choice-button {
  min-height: 54px;
  padding: 0.65rem;
  border: 1px solid #446576;
  border-radius: 7px;
  background: #0d3041;
  color: #e7f0f2;
  text-align: left;
}

.choice-button:hover {
  border-color: #6f8cff;
  background: #173f54;
}

.choice-button.correct {
  border-color: #35b9aa;
  background: rgb(53 185 170 / 18%);
}

.choice-button.incorrect {
  border-color: #e15f50;
  background: rgb(225 95 80 / 18%);
}

.check-feedback {
  margin-top: 0.8rem;
  padding: 0.7rem;
  border: 1px solid #496a7b;
  border-radius: 7px;
  color: #c6d7dd;
}

.check-feedback p {
  margin: 0;
}

.sources-section {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.sources-section h2 {
  font-size: 1.8rem;
}

.sources-section ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sources-section a {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  font-size: 0.72rem;
  text-decoration: none;
}

.lesson-footer,
.lab-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-dark);
}

.lab-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  background:
    linear-gradient(105deg, var(--module-soft), transparent 65%),
    var(--paper-strong);
}

.lab-header h1 {
  max-width: 14ch;
  margin: 0.45rem 0 0.6rem;
  font-family: var(--display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.lab-header p {
  max-width: 50rem;
  margin: 0;
  color: var(--ink-soft);
}

.lab-footer {
  margin-top: 1.2rem;
}

.lab-footer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.field-notes {
  margin-top: 2.5rem;
}

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

.field-note-grid article {
  min-width: 0;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-strong);
}

.field-note-grid h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.25rem;
}

.field-note-grid p {
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.field-note-grid pre {
  max-width: 100%;
  padding: 0.7rem;
  overflow-x: auto;
  border-radius: 6px;
  background: var(--navy);
  color: #d9e6e9;
  font-size: 0.65rem;
}

.copy-button {
  min-height: 36px;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: var(--paper);
  font: 600 0.62rem/1.3 var(--mono);
}

.code-workbench {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.code-brief {
  padding: 1rem;
  border-right: 1px solid var(--line);
  background: #edf3f5;
}

.code-brief h2 {
  margin: 0.35rem 0 0.65rem;
  font-family: var(--display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.code-brief > p {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.code-contract {
  display: grid;
  gap: 0.25rem;
  margin-top: 1rem;
  padding: 0.7rem;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: var(--paper-strong);
}

.code-contract strong,
.code-contract span {
  color: var(--ink-soft);
  font: 500 0.59rem/1.3 var(--mono);
}

.code-contract code {
  font-size: 0.75rem;
  font-weight: 600;
}

.test-preview {
  display: grid;
  gap: 0.35rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.test-preview li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 0.4rem;
  color: var(--ink-soft);
  font-size: 0.7rem;
}

.test-preview li::before {
  color: var(--provider-b);
  content: "✓";
  font-weight: 600;
}

.editor-panel {
  min-width: 0;
  background: #081923;
}

.editor-toolbar {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--console-line);
  background: #0c2130;
  color: #9fb4be;
  font: 500 0.59rem/1.3 var(--mono);
}

.code-workbench .code-editor {
  display: block;
  width: 100%;
  min-height: 410px;
  padding: 0.9rem;
  border: 0;
  border-radius: 0;
  resize: vertical;
  font: 0.72rem/1.6 var(--mono);
}

.editor-actions {
  padding: 0.65rem;
  border-top: 1px solid var(--console-line);
  border-bottom: 1px solid var(--console-line);
}

.editor-actions .quiet-button {
  color: #9fb4be;
}

.test-results {
  padding: 0.7rem;
  color: #bcd0d8;
}

.test-results > p {
  margin: 0;
  font-size: 0.72rem;
}

.test-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font: 600 0.66rem/1.3 var(--mono);
}

.test-results ul {
  display: grid;
  gap: 0.35rem;
  margin: 0.6rem 0 0;
  padding: 0;
  list-style: none;
}

.test-results li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 0.4rem;
  padding: 0.35rem;
  border-radius: 5px;
  background: rgb(255 255 255 / 3%);
  font-size: 0.66rem;
}

.test-results li.pass {
  color: #65d9cb;
}

.test-results li.fail {
  color: #f0877d;
}

.test-results li small {
  grid-column: 2;
  color: #9fb4be;
}

.design-workbench {
  display: grid;
  gap: 0.9rem;
}

.topology-board,
.decision-grid,
.failure-injector,
.rationale-field,
.design-actions {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-strong);
}

.topology-board {
  padding: 1rem;
}

.topology-flow {
  display: grid;
  grid-template-columns: minmax(80px, 0.6fr) auto minmax(80px, 0.6fr) auto minmax(130px, 1fr) auto minmax(140px, 1fr);
  gap: 0.45rem;
  align-items: center;
  padding: 1rem;
  border: 1px dashed var(--line-dark);
  border-radius: 8px;
  background:
    linear-gradient(rgb(19 43 58 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(19 43 58 / 4%) 1px, transparent 1px),
    var(--paper);
  background-size: 22px 22px;
}

.topology-flow > span {
  color: var(--provider-a);
  text-align: center;
}

.topology-flow .topology-node {
  min-width: 0;
}

.topology-flow .topology-node.strong {
  border-color: var(--provider-a);
  background: var(--provider-a-soft);
  font-weight: 600;
}

.topology-providers {
  display: grid;
  gap: 0.35rem;
}

.topology-providers div {
  padding: 0.5rem;
  border: 1px solid var(--provider-a);
  border-radius: 6px;
  background: var(--provider-a-soft);
  font: 600 0.62rem/1.3 var(--mono);
}

.topology-providers div + div {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
}

.topology-branches {
  display: flex;
  grid-column: 5 / -1;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: var(--ink-soft);
  font: 500 0.58rem/1.3 var(--mono);
}

.topology-branches span {
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-strong);
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  padding: 0.8rem;
}

.decision-card {
  display: grid;
  align-content: start;
  gap: 0.45rem;
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.decision-card > span,
.failure-injector label > span,
.rationale-field > span {
  color: var(--ink-soft);
  font: 600 0.61rem/1.3 var(--mono);
}

.decision-card small {
  color: var(--ink-soft);
  font-size: 0.67rem;
}

.failure-injector label {
  display: grid;
  gap: 0.35rem;
}

.failure-readout {
  padding: 0.65rem;
  border-left: 3px solid var(--fault);
  background: rgb(255 255 255 / 48%);
}

.failure-readout p {
  margin: 0;
  color: #74231f;
  font-size: 0.72rem;
}

.rationale-field {
  display: grid;
  gap: 0.45rem;
  padding: 0.8rem;
}

.rationale-field textarea {
  width: 100%;
  min-height: 120px;
  padding: 0.65rem;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: var(--paper);
  resize: vertical;
}

.design-actions {
  padding: 0.8rem;
}

.design-actions p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.capacity-workbench,
.crawler-workbench {
  display: grid;
  grid-template-columns: minmax(250px, 0.62fr) minmax(0, 1.38fr);
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.capacity-inputs,
.crawler-controls {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  padding: 1rem;
  border-right: 1px solid var(--line);
  background: #edf3f5;
}

.capacity-inputs h2 {
  margin: 0.35rem 0 0.7rem;
  font-family: var(--display);
  font-size: 1.8rem;
  line-height: 0.95;
  letter-spacing: -0.035em;
}

.capacity-output,
.crawler-output {
  min-width: 0;
  padding: 1rem;
  overflow: auto;
  background: var(--paper);
}

.capacity-result-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.55rem;
}

.capacity-result-grid > div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-strong);
}

.capacity-result-grid > div span,
.capacity-result-grid > div strong {
  display: block;
}

.capacity-result-grid > div span {
  margin-bottom: 0.3rem;
  color: var(--ink-soft);
  font: 600 0.56rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.capacity-result-grid > div strong {
  color: var(--ink);
  font: 700 clamp(1rem, 2vw, 1.35rem)/1 var(--display);
}

.formula-sheet {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
  padding: 0.85rem;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: var(--navy);
  color: #ffffff;
}

.formula-sheet code {
  overflow-wrap: anywhere;
  color: #9ce8de;
  font: 600 0.72rem/1.55 var(--mono);
}

.formula-sheet p {
  margin: 0;
  color: #c7d7dd;
  font-size: 0.76rem;
}

.empty-calculator,
.empty-inline {
  display: grid;
  min-height: 280px;
  padding: 2rem;
  place-content: center;
  color: var(--ink-soft);
  text-align: center;
}

.empty-calculator > span {
  color: var(--queue);
  font: 600 3rem/1 var(--mono);
}

.capacity-output .metric-strip,
.crawler-output .metric-strip {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.capacity-output .metric-strip > div,
.crawler-output .metric-strip > div {
  border-color: var(--line);
  background: var(--paper-strong);
}

.capacity-output .metric-strip span,
.crawler-output .metric-strip span {
  color: var(--ink-soft);
}

.capacity-output .metric-strip strong,
.crawler-output .metric-strip strong {
  color: var(--ink);
}

.host-queue-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0.7rem;
}

.host-queue-grid article {
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--queue);
  border-radius: 7px;
  background: var(--paper-strong);
}

.host-queue-grid article > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.host-queue-grid article > div strong {
  overflow: hidden;
  font: 600 0.67rem/1.3 var(--mono);
  text-overflow: ellipsis;
}

.host-queue-grid article > div span {
  color: var(--ink-soft);
  font: 500 0.57rem/1.3 var(--mono);
}

.host-queue-grid dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
  margin: 0.6rem 0 0;
}

.host-queue-grid dt {
  color: var(--ink-soft);
  font: 500 0.52rem/1.3 var(--mono);
  text-transform: uppercase;
}

.host-queue-grid dd {
  margin: 0.12rem 0 0;
  font: 600 0.6rem/1.3 var(--mono);
}

.crawler-timeline {
  margin-top: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.check-control {
  display: flex !important;
  min-height: 42px;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper-strong);
}

.check-control input {
  width: 18px;
  min-height: 18px;
  flex: 0 0 auto;
}

.quiz-card {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 1.7rem);
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.question-source {
  color: var(--module-color);
  font: 600 0.62rem/1.3 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.quiz-card h2 {
  max-width: 25ch;
  margin: 0.55rem 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.quiz-progress {
  height: 7px;
  margin-top: 1rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.quiz-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--module-color);
}

.quiz-choices {
  display: grid;
  gap: 0.55rem;
}

.quiz-choice {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 0.65rem;
  align-items: center;
  min-height: 56px;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  text-align: left;
}

.quiz-choice:hover:not(:disabled) {
  transform: translateX(3px);
  border-color: var(--module-color);
}

.quiz-choice > span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 6px;
  background: var(--navy);
  color: #ffffff;
  font: 600 0.65rem/1 var(--mono);
}

.quiz-choice.correct {
  border-color: var(--provider-b);
  background: var(--provider-b-soft);
}

.quiz-choice.incorrect {
  border-color: var(--fault);
  background: var(--fault-soft);
}

.quiz-card .quiz-feedback {
  margin-top: 0.8rem;
}

.quiz-result {
  max-width: 820px;
  margin: 0 auto;
}

.score-ring {
  display: grid;
  width: 156px;
  height: 156px;
  margin: 1.2rem auto;
  place-content: center;
  border: 12px solid var(--module-soft);
  border-top-color: var(--module-color);
  border-radius: 50%;
  background: var(--paper-strong);
  text-align: center;
  transform: rotate(45deg);
}

.score-ring strong,
.score-ring span {
  display: block;
  transform: rotate(-45deg);
}

.score-ring strong {
  font: 700 2.15rem/1 var(--display);
}

.score-ring span {
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font: 600 0.58rem/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.answer-review {
  width: 100%;
  margin-top: 1.5rem;
  text-align: left;
}

.answer-review h2 {
  font-family: var(--display);
  font-size: 1.7rem;
}

.answer-review details {
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper-strong);
}

.answer-review details + details {
  margin-top: 0.45rem;
}

.answer-review summary {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 0.45rem;
  cursor: pointer;
  font-weight: 600;
}

.mock-hub,
.mock-prompt,
.mock-work,
.rubric-panel,
.benchmark-ledger,
.notebook-header {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-strong);
}

.mock-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1rem;
}

.mock-card-grid article {
  display: flex;
  min-height: 210px;
  padding: 0.85rem;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.mock-card-grid article > span {
  color: var(--ink-soft);
  font: 600 0.59rem/1.3 var(--mono);
  text-transform: uppercase;
}

.mock-card-grid h3 {
  margin: 0.55rem 0 0.35rem;
  font-family: var(--display);
  font-size: 1.45rem;
  line-height: 1;
}

.mock-card-grid p {
  margin: 0 0 0.8rem;
  color: var(--ink-soft);
  font-size: 0.73rem;
}

.mock-card-grid button {
  margin-top: auto;
  align-self: flex-start;
}

.mock-view .mock-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: end;
}

.mock-view .mock-timer {
  display: grid;
  min-width: 180px;
  padding: 0.8rem;
  border: 1px solid var(--navy);
  border-radius: 9px;
  background: var(--navy);
  color: #ffffff;
}

.mock-view .mock-timer output {
  font: 600 clamp(2rem, 5vw, 3.2rem)/1 var(--mono);
  letter-spacing: -0.05em;
}

.mock-view .mock-timer > div {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  margin-top: 0.6rem;
}

.mock-view .mock-timer .quiet-button {
  color: #b8ccd4;
}

.mock-prompt h2 {
  margin: 0.4rem 0 0.65rem;
  font-family: var(--display);
  font-size: 1.7rem;
}

.mock-prompt p {
  margin: 0;
  color: var(--ink-soft);
}

.mock-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(290px, 0.85fr);
  gap: 0.8rem;
}

.mock-work > label {
  display: grid;
  gap: 0.45rem;
  color: var(--ink-soft);
  font: 600 0.62rem/1.3 var(--mono);
}

.mock-work textarea {
  width: 100%;
  min-height: 330px;
  padding: 0.7rem;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background:
    linear-gradient(transparent 31px, var(--line) 32px),
    var(--paper);
  background-size: 100% 32px;
  line-height: 32px;
  resize: vertical;
}

.followup-deck {
  margin-top: 1rem;
}

.followup-deck h2 {
  font-family: var(--display);
  font-size: 1.35rem;
}

.followup-deck details {
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.followup-deck details + details {
  margin-top: 0.4rem;
}

.followup-deck summary {
  cursor: pointer;
  font: 600 0.65rem/1.3 var(--mono);
}

.followup-deck p {
  margin: 0.5rem 0 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.rubric-list {
  display: grid;
  gap: 0.5rem;
  margin: 0.8rem 0;
}

.rubric-list > label {
  display: grid;
  grid-template-columns: 1fr 95px;
  gap: 0.6rem;
  align-items: center;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
}

.rubric-list strong,
.rubric-list small {
  display: block;
}

.rubric-list strong {
  font-family: var(--display);
  font-size: 1rem;
}

.rubric-list small {
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.66rem;
}

.rubric-list select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: var(--paper-strong);
}

.mock-score-readout {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.7rem;
  margin-top: 0.75rem;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.mock-score-readout strong {
  color: var(--provider-a);
  font: 600 1.35rem/1 var(--mono);
}

.notebook-view {
  display: grid;
  gap: 1.1rem;
}

.notebook-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  background:
    linear-gradient(105deg, var(--provider-a-soft), transparent 65%),
    var(--paper-strong);
}

.notebook-header h1 {
  margin: 0.45rem 0 0.55rem;
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: 0.86;
  letter-spacing: -0.06em;
}

.notebook-header p {
  max-width: 46rem;
  margin: 0;
  color: var(--ink-soft);
}

.file-button {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.benchmark-ledger .table-scroll {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.benchmark-ledger td small {
  display: block;
  color: var(--ink-soft);
  font-size: 0.57rem;
}

.benchmark-ledger textarea {
  width: 210px;
  min-height: 60px;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  resize: vertical;
}

.compare-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.7rem;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #edf3f5;
}

.compare-bar p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.notebook-view > .artifact-grid {
  display: block;
}

.drawer-sticky {
  position: sticky;
  top: 0;
  padding-bottom: 1rem;
}

.drawer-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.drawer-readiness {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.7rem;
}

.drawer-readiness button {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  gap: 0.5rem;
  align-items: center;
  min-height: 46px;
  padding: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper-strong);
  color: var(--ink);
  text-align: left;
}

.drawer-readiness button:hover {
  border-color: var(--provider-a);
}

.drawer-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot, var(--provider-a));
}

.drawer-readiness strong,
.drawer-readiness small {
  display: block;
}

.drawer-readiness strong {
  font-family: var(--display);
  font-size: 0.86rem;
}

.drawer-readiness small {
  color: var(--ink-soft);
  font-size: 0.58rem;
}

.drawer-readiness b {
  font: 600 0.62rem/1.3 var(--mono);
}

.latest-run {
  margin-top: 0.65rem;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--provider-a);
  border-radius: 7px;
  background: var(--paper-strong);
}

.latest-run strong,
.latest-run span,
.latest-run small {
  display: block;
}

.latest-run strong {
  font-family: var(--display);
  font-size: 1rem;
}

.latest-run span {
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.66rem;
}

.latest-run small {
  margin-top: 0.35rem;
  color: var(--ink-soft);
  font: 500 0.55rem/1.3 var(--mono);
}

.drawer-empty {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.interview-cue {
  border-left: 4px solid var(--provider-b);
  background: var(--provider-b-soft);
}

.interview-cue p {
  color: #174c48;
  font-size: 0.76rem;
}

@media (max-width: 1500px) {
  :root {
    --rail-width: 258px;
    --drawer-width: 276px;
  }

  .interview-hero {
    grid-template-columns: minmax(280px, 0.76fr) minmax(480px, 1.34fr);
  }

  .console-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .console-metric:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--console-line);
  }

  .console-metric:nth-child(4) {
    border-top: 1px solid var(--console-line);
  }

  .course-shell {
    grid-template-columns: var(--rail-width) minmax(0, 1fr);
  }

  .course-stage {
    grid-column: 2;
  }

  .context-drawer {
    display: none;
  }
}

@media (max-width: 1400px) {
  .decagon-hero {
    grid-template-columns: minmax(270px, 0.7fr) minmax(0, 1.3fr);
    gap: clamp(1.2rem, 2vw, 2rem);
    min-height: 0;
  }

  .decagon-hero .hero-copy {
    max-width: 420px;
    padding-block: 1rem;
  }

  .decagon-hero .hero-title {
    max-width: 10ch;
    font-size: clamp(3.6rem, 5.2vw, 5.8rem);
  }

  .hero-console-wrap {
    min-width: 0;
    min-height: 560px;
    padding-block: 0;
  }
}

@media (max-width: 1240px) {
  .interview-hero,
  .decagon-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .interview-hero-copy,
  .decagon-hero .hero-copy {
    max-width: 780px;
    padding-block: 1rem 0;
  }

  .interview-hero-copy h1,
  .decagon-hero .hero-title {
    max-width: 10ch;
    font-size: clamp(4.2rem, 10vw, 7rem);
  }

  .gateway-race-console,
  .gateway-console,
  .race-console {
    min-height: 600px;
  }

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

  .topology-diagram,
  .architecture-board {
    grid-template-columns: repeat(2, minmax(150px, 1fr));
  }

  .hero-console-wrap {
    min-height: 610px;
    padding-block: 0;
  }

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

@media (max-width: 1060px) {
  .interview-track-grid,
  .track-grid,
  .readiness-grid {
    grid-template-columns: 1fr;
  }

  .track-card,
  .readiness-card {
    min-height: 220px;
  }

  .simulator-grid {
    grid-template-columns: minmax(220px, 0.52fr) minmax(0, 1.48fr);
  }

  .control-grid {
    grid-template-columns: 1fr;
  }

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

  .crawler-stage,
  .mock-stage {
    grid-template-columns: 1fr;
  }

  .gateway-layout {
    grid-template-columns: minmax(210px, 0.48fr) minmax(0, 1.52fr);
  }

  .module-actions,
  .mock-layout {
    grid-template-columns: 1fr;
  }

  .capacity-output .metric-strip,
  .crawler-output .metric-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .capacity-result-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  body {
    background-size: 22px 22px;
  }

  #course-view {
    padding-right: 0.85rem;
    padding-left: 0.85rem;
  }

  .course-topbar::after {
    right: 0.8rem;
    left: 0.8rem;
  }

  .decagon-home {
    gap: 4rem;
  }

  .interview-hero,
  .decagon-hero {
    gap: 1.8rem;
  }

  .interview-hero-copy h1,
  .decagon-hero .hero-title {
    max-width: 8ch;
    font-size: clamp(3.7rem, 19vw, 5.8rem);
  }

  .interview-hero-copy > p,
  .decagon-hero .hero-lede {
    font-size: 1rem;
  }

  .hero-console-wrap {
    min-height: 0;
  }

  .gateway-race-console,
  .gateway-console,
  .race-console {
    min-height: 0;
    border-radius: 12px;
    box-shadow: 7px 7px 0 rgb(47 91 211 / 16%);
  }

  .race-stage {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .race-path {
    min-height: 330px;
    border-right: 0;
    border-bottom: 1px solid var(--console-line);
  }

  .decision-trace {
    max-height: 260px;
  }

  .provider-lane {
    grid-template-columns: 88px 1fr;
  }

  .provider-result {
    grid-column: 2;
    text-align: left;
  }

  .console-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .dependency-map {
    grid-template-columns: 1fr;
  }

  .dependency-section .dependency-map {
    grid-template-columns: 1fr;
  }

  .dependency-arrow {
    min-height: 28px;
    transform: rotate(90deg);
  }

  .artifact-grid {
    grid-template-columns: 1fr;
  }

  .diagram-shell,
  .systems-diagram {
    padding: 0.8rem;
  }

  .diagram-head {
    align-items: stretch;
    flex-direction: column;
  }

  .diagram-readout {
    grid-template-columns: 1fr;
  }

  .state-diagram {
    align-items: stretch;
    flex-direction: column;
  }

  .state-arrow,
  .diagram-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .state-node,
  .diagram-node,
  .topology-node {
    width: 100%;
  }

  .topology-diagram,
  .architecture-board {
    grid-template-columns: 1fr;
  }

  .topology-lane,
  .architecture-lane {
    min-height: 0;
  }

  .simulator-shell,
  .gateway-simulator,
  .crawler-simulator {
    border-radius: 10px;
  }

  .simulator-head {
    align-items: stretch;
    flex-direction: column;
  }

  .simulation-tabs {
    display: grid;
  }

  .simulator-grid {
    display: block;
    min-height: 0;
  }

  .simulator-controls,
  .simulator-stage {
    border: 0;
  }

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

  .control-grid {
    grid-template-columns: 1fr;
  }

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

  .waterfall {
    overflow-x: auto;
  }

  .waterfall-head,
  .waterfall-row {
    min-width: 580px;
  }

  .benchmark-head {
    align-items: stretch;
    flex-direction: column;
  }

  .benchmark-note {
    width: 220px;
  }

  .comparison-strip {
    grid-template-columns: 1fr;
  }

  .comparison-strip > span {
    transform: rotate(90deg);
    text-align: center;
  }

  .crawl-pipeline {
    grid-template-columns: 1fr;
  }

  .crawl-step + .crawl-step::before {
    top: -0.48rem;
    left: 50%;
    transform: translate(-50%, -50%) rotate(90deg);
  }

  .host-queue {
    grid-template-columns: 1fr auto;
  }

  .url-queue {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .failure-injector {
    grid-template-columns: 1fr;
  }

  .mock-control-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .mock-timer {
    justify-content: space-between;
  }

  .prompt-facts {
    grid-template-columns: 1fr;
  }

  .spoken-check-head {
    align-items: stretch;
    flex-direction: column;
  }

  .mobile-action-bar {
    position: sticky;
    z-index: 12;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    gap: 0.55rem;
    margin: 1rem -0.85rem -5rem;
    padding: 0.7rem 0.85rem calc(0.7rem + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line-dark);
    background: rgb(245 248 250 / 94%);
    backdrop-filter: blur(12px);
  }

  .mobile-action-bar > * {
    min-height: 46px;
    flex: 1;
  }

  .gateway-layout,
  .code-workbench,
  .capacity-workbench,
  .crawler-workbench {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .gateway-console .sim-controls,
  .code-brief,
  .capacity-inputs,
  .crawler-controls {
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .gateway-console .sim-controls {
    max-height: none;
  }

  .metric-strip,
  .capacity-output .metric-strip,
  .crawler-output .metric-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .module-card-grid,
  .module-actions,
  .mechanics-grid,
  .lesson-callouts,
  .choice-grid,
  .sources-section ul,
  .field-note-grid,
  .decision-grid,
  .host-queue-grid,
  .mock-card-grid,
  .mock-layout {
    grid-template-columns: 1fr;
  }

  .module-card-grid .module-card {
    min-height: 255px;
  }

  .module-progress-card {
    justify-self: start;
  }

  .lesson-row {
    grid-template-columns: 42px minmax(0, 1fr) auto;
  }

  .lesson-row > span:last-child {
    display: none;
  }

  .lesson-duration {
    grid-column: 2;
  }

  .action-card {
    grid-template-columns: 44px 1fr;
  }

  .visual-flow {
    align-items: stretch;
    flex-direction: column;
    overflow: visible;
  }

  .visual-flow .flow-node {
    width: 100%;
    min-height: 64px;
  }

  .visual-flow .flow-arrow {
    transform: rotate(90deg);
  }

  .lesson-footer,
  .lab-footer,
  .lab-header,
  .notebook-header {
    align-items: stretch;
    flex-direction: column;
  }

  .lesson-footer button,
  .lab-footer button {
    width: 100%;
  }

  .topology-flow {
    grid-template-columns: 1fr;
  }

  .topology-flow > span {
    transform: rotate(90deg);
  }

  .topology-branches {
    grid-column: auto;
  }

  .failure-injector,
  .rubric-list > label {
    grid-template-columns: 1fr;
  }

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

  .mock-view .mock-timer {
    width: 100%;
    min-width: 0;
  }

  .notebook-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .notebook-actions > * {
    width: 100%;
    min-height: 42px;
  }

  .compare-bar {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .console-toolbar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .console-chip {
    min-width: 0;
    justify-content: space-between;
  }

  .console-metrics,
  .metrics-grid,
  .simulation-metrics {
    grid-template-columns: 1fr;
  }

  .metric-strip,
  .provider-state-row,
  .capacity-output .metric-strip,
  .crawler-output .metric-strip {
    grid-template-columns: 1fr;
  }

  .capacity-result-grid {
    grid-template-columns: 1fr;
  }

  .control-pair {
    grid-template-columns: 1fr;
  }

  .console-title-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .request-waterfall .waterfall-row {
    grid-template-columns: 34px minmax(100px, 1fr) 64px;
  }

  .host-queue-grid dl {
    grid-template-columns: 1fr;
  }

  .console-metric + .console-metric,
  .console-metric:nth-child(3) {
    border-top: 1px solid var(--console-line);
    border-left: 0;
  }

  .score-control button {
    width: 38px;
    min-height: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .console-status::before,
  .status-dot,
  .request-track > span,
  .waterfall-bar {
    animation: none !important;
  }
}

@media print {
  body {
    background: #ffffff;
  }

  .course-rail,
  .course-topbar,
  .context-drawer,
  .search-dialog,
  .toast,
  .mobile-action-bar,
  .simulator-actions,
  .component-palette,
  .mock-control-bar {
    display: none !important;
  }

  .course-shell,
  .course-stage {
    display: block;
    width: 100%;
    margin: 0;
  }

  #course-view {
    max-width: none;
    padding: 0;
  }

  .architecture-board,
  .topology-diagram,
  .benchmark-notebook,
  .mock-brief {
    break-inside: avoid;
    box-shadow: none;
  }
}