:root {
  --bench: #e7e9e4;
  --bench-deep: #d8ddd7;
  --paper: #f5f5ef;
  --ink: #171b19;
  --muted: #5d6762;
  --line: #b9c1ba;
  --line-dark: #59655f;
  --cyan: #73e4e3;
  --cyan-deep: #0f777a;
  --violet: #7155f5;
  --coral: #ec6a53;
  --dark-panel: #161b19;
  --dark-panel-2: #202824;
  --white: #fbfcf5;
  --mono: "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  --display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --body: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bench);
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bench);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(23, 27, 25, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 27, 25, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--violet);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 0 44px;
}

.site-header {
  display: flex;
  min-height: 84px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand,
.header-meta,
.language-switch,
.hero-actions,
.panel-status,
.unit-label,
.receiver-readout,
.site-footer,
.evaluation-row {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  font-size: 0.57rem;
  letter-spacing: -0.04em;
}

.header-meta {
  gap: 16px;
}

.source-link,
.language-switch a,
.site-footer a,
.text-link {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.source-link:hover,
.language-switch a:hover,
.site-footer a:hover,
.text-link:hover {
  color: var(--cyan-deep);
}

.header-divider {
  width: 1px;
  height: 18px;
  background: var(--line);
}

.language-switch {
  gap: 9px;
}

.language-switch a {
  color: var(--muted);
}

.language-current {
  color: var(--ink);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(340px, 0.94fr);
  gap: clamp(44px, 7vw, 112px);
}

.hero {
  min-height: 600px;
  align-items: center;
  padding: 88px 0 82px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow,
.section-kicker,
.panel-tag,
.unit-label,
.mechanism-code,
.caption-note,
.hero-source,
.control-note,
.site-footer,
.fact-cell p,
.evaluation-row,
.schematic-label,
.schematic-stamp {
  font-family: var(--mono);
}

.eyebrow,
.section-kicker {
  margin: 0 0 22px;
  color: var(--cyan-deep);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  line-height: 1.3;
  text-transform: uppercase;
}

.live-dot,
.status-light,
.readout-led {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(236, 106, 83, 0.12);
  vertical-align: 1px;
}

.hero h1,
.section-heading h2,
.evaluation-main h2,
.limits-grid h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.055em;
}

.hero h1 {
  max-width: 860px;
  font-size: clamp(4rem, 8vw, 8.4rem);
  line-height: 0.88;
}

.title-mark {
  color: var(--violet);
}

.hero-deck {
  max-width: 650px;
  margin: 35px 0 0;
  color: #36403b;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.45;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 18px 24px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 47px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 17px;
  border: 1px solid var(--ink);
  border-radius: 0;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--ink);
}

.button-primary:hover {
  color: var(--ink);
  background: var(--cyan);
}

.button-secondary {
  color: var(--ink);
  background: transparent;
}

.button-secondary:hover {
  background: var(--paper);
}

.hero-source {
  max-width: 280px;
  margin: 0;
  color: var(--muted);
  font-size: 0.67rem;
  line-height: 1.45;
}

.hero-schematic {
  position: relative;
  min-height: 410px;
  border: 1px solid var(--line-dark);
  background: rgba(245, 245, 239, 0.45);
  overflow: hidden;
}

.hero-schematic::before,
.hero-schematic::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.hero-schematic::before {
  inset: 22px;
  border: 1px solid rgba(89, 101, 95, 0.35);
}

.hero-schematic::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: rgba(89, 101, 95, 0.17);
}

.schematic-screen {
  position: absolute;
  top: 106px;
  left: 13%;
  width: 54%;
  aspect-ratio: 1.45;
  border: 9px solid var(--ink);
  background: #080d0c;
  box-shadow: 12px 12px 0 rgba(23, 27, 25, 0.12);
}

.schematic-screen-glow {
  position: absolute;
  inset: 12%;
  background: radial-gradient(circle at 35% 45%, rgba(115, 228, 227, 0.28), transparent 22%), linear-gradient(145deg, #243331, #101615 46%, #1d2633);
}

.schematic-screen-lines {
  position: absolute;
  inset: 12%;
  opacity: 0.5;
  background: repeating-linear-gradient(0deg, transparent 0 11px, rgba(115, 228, 227, 0.16) 12px 13px);
}

.schematic-screen-caption {
  position: absolute;
  right: 12px;
  bottom: 8px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
}

.schematic-cable {
  position: absolute;
  top: 238px;
  right: 22%;
  width: 36%;
  height: 2px;
  background: var(--ink);
  transform: rotate(-11deg);
  transform-origin: left center;
}

.schematic-pulse {
  position: absolute;
  top: -3px;
  left: 30%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 5px rgba(236, 106, 83, 0.16);
  animation: pulse-route 2.6s ease-in-out infinite;
}

.schematic-receiver {
  position: absolute;
  right: 10%;
  bottom: 91px;
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.receiver-ring {
  position: absolute;
  width: 44px;
  height: 44px;
  border: 1px solid var(--violet);
  border-radius: 50%;
}

.receiver-core {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 7px rgba(113, 85, 245, 0.14);
}

.schematic-label {
  position: absolute;
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.schematic-label-screen {
  top: 77px;
  left: 13%;
}

.schematic-label-cable {
  top: 271px;
  right: 24%;
  color: var(--coral);
}

.schematic-label-receiver {
  right: 10%;
  bottom: 65px;
}

.schematic-stamp {
  position: absolute;
  right: 29px;
  bottom: 25px;
  color: var(--violet);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-align: center;
}

.schematic-stamp strong {
  display: inline-block;
  margin: 3px 0;
  color: var(--coral);
  font-family: var(--body);
  font-size: 1rem;
}

.fact-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.fact-cell {
  min-height: 136px;
  padding: 22px 24px 19px;
  border-right: 1px solid var(--line);
}

.fact-cell:last-child {
  border-right: 0;
}

.fact-cell strong {
  font-family: var(--display);
  font-size: clamp(2.5rem, 4vw, 4.1rem);
  font-weight: 400;
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.fact-cell > span {
  display: inline-block;
  margin-left: 7px;
  color: var(--cyan-deep);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.fact-cell p {
  max-width: 150px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.63rem;
  line-height: 1.35;
}

.section {
  padding: 124px 0 0;
}

.section-heading {
  align-items: end;
  margin-bottom: 48px;
}

.section-heading h2,
.evaluation-main h2,
.limits-grid h2 {
  font-size: clamp(2.7rem, 5.8vw, 5.7rem);
  line-height: 0.93;
}

.section-intro {
  max-width: 450px;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.55;
}

.simulation-panel {
  color: var(--white);
  background: var(--dark-panel);
  box-shadow: 16px 16px 0 rgba(23, 27, 25, 0.09);
}

.panel-bar {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid #41514a;
}

.panel-tag {
  color: var(--cyan);
  font-size: 0.64rem;
  letter-spacing: 0.09em;
}

.panel-status {
  color: #aabbb1;
  font-family: var(--mono);
  font-size: 0.65rem;
}

.panel-status .status-light {
  width: 6px;
  height: 6px;
  margin-right: 7px;
  background: var(--line-dark);
  box-shadow: none;
}

.simulation-panel.is-running .status-light {
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(236, 106, 83, 0.15);
}

.simulation-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, 0.34fr) minmax(0, 0.9fr);
  gap: 24px;
  align-items: center;
  padding: 30px 28px 34px;
}

.screen-unit,
.receiver-unit {
  min-width: 0;
  margin: 0;
}

.unit-label {
  justify-content: space-between;
  margin-bottom: 13px;
  color: #adbbb3;
  font-size: 0.62rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.unit-label span:last-child {
  color: var(--coral);
}

.monitor {
  position: relative;
  padding-bottom: 22px;
}

.monitor-bezel {
  position: relative;
  padding: 10px;
  border: 1px solid #687b70;
  background: #050807;
}

.monitor-bezel::after {
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(115, 228, 227, 0.14);
  content: "";
  pointer-events: none;
}

#screen-canvas {
  display: block;
  width: 100%;
  height: auto;
  background: #0a0f0e;
}

.monitor-scanline {
  position: absolute;
  top: 10px;
  right: 10px;
  bottom: 10px;
  left: 10px;
  background: linear-gradient(to bottom, transparent 0 47%, rgba(115, 228, 227, 0.13) 48%, transparent 49% 100%);
  background-size: 100% 12px;
  opacity: 0.42;
  pointer-events: none;
}

.monitor-neck {
  position: absolute;
  bottom: 5px;
  left: 47%;
  width: 15%;
  height: 18px;
  border-right: 1px solid #687b70;
  border-bottom: 1px solid #687b70;
  border-left: 1px solid #687b70;
}

.monitor-foot {
  position: absolute;
  bottom: 0;
  left: 37%;
  width: 35%;
  height: 6px;
  border: 1px solid #687b70;
  background: var(--dark-panel-2);
}

figcaption {
  margin-top: 12px;
  color: #8fa299;
  font-size: 0.72rem;
}

.signal-route {
  min-width: 0;
  align-self: center;
}

.route-line {
  position: relative;
  height: 26px;
  margin: 0 6px 18px;
  border-top: 1px solid #5e776b;
  border-bottom: 1px solid #5e776b;
}

.route-line::before,
.route-line::after {
  position: absolute;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  content: "";
}

.route-line::before {
  left: -5px;
}

.route-line::after {
  right: -5px;
  background: var(--violet);
}

.route-trace {
  position: absolute;
  top: 11px;
  right: 0;
  left: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 3px, transparent 3px 8px);
  opacity: 0.4;
}

.route-packet {
  position: absolute;
  top: 7px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 5px rgba(236, 106, 83, 0.12);
  opacity: 0;
  transform: translateX(0);
}

.simulation-panel.is-running .route-packet {
  opacity: 1;
  animation: packet-route 2.2s linear infinite;
}

.route-labels {
  display: grid;
  gap: 8px;
  color: #8fa299;
  font-family: var(--mono);
  font-size: 0.56rem;
  line-height: 1.25;
  text-align: center;
  text-transform: uppercase;
}

.receiver-panel {
  min-height: 204px;
  padding: 12px;
  border: 1px solid #687b70;
  background: #080d0c;
}

#trace-canvas {
  display: block;
  width: 100%;
  height: auto;
}

.receiver-readout {
  min-height: 25px;
  margin-top: 7px;
  color: #8fa299;
  font-family: var(--mono);
  font-size: 0.6rem;
}

.readout-led {
  width: 5px;
  height: 5px;
  margin-right: 7px;
  background: #52635a;
  box-shadow: none;
}

.simulation-panel.is-running .readout-led {
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(236, 106, 83, 0.14);
}

.simulation-controls {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 36px;
  align-items: end;
  padding: 23px 28px 25px;
  border-top: 1px solid #41514a;
}

.mode-fieldset {
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
  border: 0;
}

.mode-fieldset legend {
  margin-bottom: 13px;
  color: #adbbb3;
  font-family: var(--mono);
  font-size: 0.61rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.mode-option {
  display: flex;
  min-width: 0;
  gap: 9px;
  cursor: pointer;
  color: #e5ece4;
}

.mode-option input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  accent-color: var(--cyan);
}

.mode-option span {
  display: grid;
  gap: 3px;
}

.mode-option strong {
  font-size: 0.82rem;
  font-weight: 500;
}

.mode-option small {
  color: #8fa299;
  font-size: 0.68rem;
  line-height: 1.35;
}

.control-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.control-actions .button-primary {
  border-color: var(--cyan);
  color: var(--ink);
  background: var(--cyan);
}

.control-actions .button-primary:hover {
  color: var(--white);
  background: var(--violet);
}

.control-actions .button-secondary {
  border-color: #687b70;
  color: #e5ece4;
}

.control-actions .button-secondary:hover {
  color: var(--ink);
  background: var(--white);
}

.control-note {
  flex: 1 1 100%;
  margin: 3px 0 0;
  color: #8fa299;
  font-size: 0.6rem;
  line-height: 1.35;
  text-align: right;
}

.caption-note {
  max-width: 670px;
  margin: 24px 0 0 auto;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.5;
}

.caption-note span {
  display: inline-block;
  margin-right: 6px;
  color: var(--coral);
  font-size: 1rem;
}

.mechanism-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.mechanism-card {
  min-height: 300px;
  padding: 24px 26px 27px;
  border-right: 1px solid var(--line);
}

.mechanism-card:last-child {
  border-right: 0;
}

.mechanism-card-active {
  background: var(--bench-deep);
  box-shadow: inset 0 -4px 0 var(--cyan-deep);
}

.mechanism-number {
  margin-bottom: 51px;
  color: var(--violet);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.mechanism-card h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 2.1rem;
  font-weight: 400;
  letter-spacing: -0.04em;
}

.mechanism-card p {
  max-width: 305px;
  margin: 13px 0 24px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.mechanism-code {
  color: var(--cyan-deep);
  font-size: 0.61rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.evaluation-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 0.74fr);
  gap: 48px;
  padding: 46px 48px 50px;
  color: var(--white);
  background: #28315a;
}

.evaluation-main .section-kicker {
  color: var(--cyan);
}

.evaluation-main h2 {
  max-width: 680px;
}

.evaluation-main p:not(.section-kicker) {
  max-width: 590px;
  margin: 28px 0 0;
  color: #d6e0da;
  line-height: 1.6;
}

.evaluation-list {
  align-self: end;
  border-top: 1px solid rgba(115, 228, 227, 0.6);
}

.evaluation-row {
  min-height: 66px;
  gap: 10px;
  border-bottom: 1px solid rgba(115, 228, 227, 0.27);
  color: #b6c8c1;
  font-size: 0.64rem;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.evaluation-row strong {
  min-width: 52px;
  color: var(--cyan);
  font-family: var(--display);
  font-size: 2.7rem;
  font-weight: 400;
  letter-spacing: -0.07em;
  line-height: 1;
  text-align: right;
}

.limits-section {
  padding-bottom: 124px;
}

.limits-grid {
  align-items: start;
}

.limits-copy {
  max-width: 500px;
  margin-top: 4px;
}

.limits-copy p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.58;
}

.text-link {
  display: inline-block;
  margin-top: 7px;
  color: var(--cyan-deep);
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.site-footer {
  min-height: 92px;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--ink);
  color: var(--muted);
  font-size: 0.63rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.not-found {
  display: grid;
  min-height: 100vh;
  max-width: 720px;
  align-content: center;
  margin: 0 auto;
  padding: 40px 24px;
}

.not-found h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.4rem, 8vw, 6.8rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.9;
}

.not-found p:not(.section-kicker) {
  max-width: 440px;
  margin: 24px 0 28px;
  color: var(--muted);
}

.site-footer > div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-mark {
  color: var(--ink);
}

@keyframes packet-route {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(100% - 9px)); }
}

@keyframes pulse-route {
  0%, 100% { opacity: 0.3; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(20px); }
}

@media (max-width: 980px) {
  .site-shell {
    padding: 0 25px;
  }

  .content-grid {
    grid-template-columns: minmax(0, 1fr) minmax(270px, 0.8fr);
    gap: 42px;
  }

  .hero {
    min-height: 520px;
    padding-top: 70px;
  }

  .hero h1 {
    font-size: clamp(3.8rem, 9vw, 6rem);
  }

  .simulation-stage {
    grid-template-columns: minmax(0, 1fr) minmax(95px, 0.28fr) minmax(0, 0.9fr);
    gap: 16px;
    padding-right: 19px;
    padding-left: 19px;
  }

  .simulation-controls,
  .evaluation-card {
    grid-template-columns: 1fr;
  }

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

  .control-note {
    text-align: left;
  }
}

@media (max-width: 700px) {
  html {
    scroll-behavior: auto;
  }

  .site-shell {
    padding: 0 18px;
  }

  .site-header {
    min-height: 72px;
    font-size: 0.61rem;
  }

  .header-meta {
    gap: 10px;
  }

  .source-link {
    display: none;
  }

  .content-grid {
    display: block;
  }

  .hero {
    min-height: auto;
    padding: 61px 0 58px;
  }

  .hero h1 {
    max-width: 600px;
    font-size: clamp(3.65rem, 16vw, 5.6rem);
    line-height: 0.88;
  }

  .hero-deck {
    margin-top: 27px;
    font-size: 1.14rem;
  }

  .hero-schematic {
    min-height: 330px;
    margin-top: 48px;
  }

  .schematic-screen {
    top: 78px;
    left: 12%;
    width: 60%;
  }

  .schematic-label-screen {
    top: 52px;
  }

  .schematic-cable {
    top: 203px;
    right: 16%;
    width: 40%;
  }

  .schematic-label-cable {
    top: 235px;
    right: 18%;
  }

  .schematic-receiver {
    right: 7%;
    bottom: 60px;
    width: 58px;
    height: 58px;
  }

  .schematic-label-receiver {
    right: 7%;
    bottom: 37px;
  }

  .schematic-stamp {
    right: 20px;
    bottom: 18px;
  }

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

  .fact-cell {
    min-height: 119px;
    padding: 19px 15px 16px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .fact-cell:nth-child(2n) {
    border-right: 0;
  }

  .fact-cell:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .fact-cell strong {
    font-size: 3.25rem;
  }

  .section {
    padding-top: 88px;
  }

  .section-heading {
    margin-bottom: 31px;
  }

  .section-heading h2,
  .evaluation-main h2,
  .limits-grid h2 {
    font-size: clamp(2.9rem, 13vw, 4.6rem);
  }

  .section-intro {
    margin-top: 23px;
    font-size: 0.97rem;
  }

  .simulation-panel {
    box-shadow: 8px 8px 0 rgba(23, 27, 25, 0.09);
  }

  .panel-bar {
    min-height: 48px;
    padding: 0 15px;
  }

  .simulation-stage {
    display: block;
    padding: 24px 15px 28px;
  }

  .signal-route {
    padding: 23px 0 25px;
  }

  .route-line {
    margin-right: 6px;
    margin-left: 6px;
  }

  .route-labels {
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }

  .simulation-controls {
    display: block;
    padding: 21px 15px 22px;
  }

  .mode-fieldset {
    display: grid;
    gap: 15px;
  }

  .control-actions {
    margin-top: 23px;
  }

  .control-actions .button {
    flex: 1 1 135px;
  }

  .control-note {
    margin-top: 5px;
  }

  .caption-note {
    margin-top: 20px;
    font-size: 0.67rem;
  }

  .mechanism-grid {
    display: block;
  }

  .mechanism-card {
    min-height: 0;
    padding: 22px 20px 25px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .mechanism-card:last-child {
    border-bottom: 0;
  }

  .mechanism-number {
    margin-bottom: 27px;
  }

  .mechanism-card h3 {
    font-size: 2rem;
  }

  .evaluation-card {
    gap: 33px;
    padding: 29px 21px 30px;
  }

  .evaluation-main p:not(.section-kicker) {
    margin-top: 20px;
    font-size: 0.94rem;
  }

  .evaluation-row strong {
    min-width: 42px;
    font-size: 2.35rem;
  }

  .limits-section {
    padding-bottom: 85px;
  }

  .limits-copy {
    margin-top: 26px;
  }

  .limits-copy p {
    font-size: 0.96rem;
  }

  .site-footer {
    min-height: 110px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}