:root {
  --bg: #0a0a0b;
  --bg-2: #111113;
  --line: #232326;
  --line-2: #34343a;
  --text: #ece8e1;
  --muted: #9a968f;
  --faint: #5f5d58;
  --accent: #ff5a1f;
  --cyan: #6fd3ff;
  --green: #7dff9a;
  --f-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --f-body: "General Sans", "Helvetica Neue", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
  --pad: clamp(20px, 5vw, 72px);
  --gap: clamp(56px, 8vw, 112px);
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 72px;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
}
.mono {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 200;
  background: var(--accent);
  color: #000;
  padding: 8px 12px;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.tag {
  color: var(--accent);
  margin-bottom: 12px;
}

/* NAV */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px var(--pad);
  border-bottom: 1px solid transparent;
  transition:
    background 0.3s,
    border-color 0.3s;
}
.nav.scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  border-color: var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.08em;
}
.brand-mark {
  width: 28px;
  height: 28px;
}
.nav nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--muted);
}
.nav nav a {
  transition: color 0.2s;
}
.nav nav a:hover,
.nav nav a.on {
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--accent);
  color: #0a0a0b;
  border: 1px solid var(--accent);
  padding: 12px 20px;
  cursor: pointer;
  font-weight: 500;
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
  white-space: nowrap;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-2);
}
.btn-ghost:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-ghost[aria-pressed="true"] {
  background: var(--accent);
  color: #0a0a0b;
  border-color: var(--accent);
}
.btn-sm {
  padding: 7px 12px;
  font-size: 11px;
}

/* HERO / X-RAY */
.hero {
  padding-top: clamp(84px, 11vh, 112px);
  position: relative;
}
.hero-head {
  padding: 0 var(--pad);
  position: relative;
  z-index: 2;
  max-width: 900px;
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  display: inline-block;
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  50% {
    opacity: 0.35;
  }
}
.hero-title {
  font-family: var(--f-display);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.88;
  font-size: clamp(52px, 8vw, 120px);
}
.hero-sub {
  color: var(--muted);
  max-width: 52ch;
  margin-top: 14px;
}
.xray {
  position: relative;
  margin-top: clamp(-72px, -5vw, -24px);
  max-width: 1500px;
  margin-inline: auto;
}
.xray-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1774/887;
  cursor: crosshair;
  overflow: hidden;
  touch-action: pan-y;
  --x: 50%;
  --y: 50%;
  --r: 150px;
  -webkit-mask-image: linear-gradient(
    transparent,
    #000 14%,
    #000 86%,
    transparent
  );
  mask-image: linear-gradient(transparent, #000 14%, #000 86%, transparent);
}
.layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}
.bones {
  -webkit-mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    #000 calc(var(--r) * 0.72),
    transparent var(--r)
  );
  mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    #000 calc(var(--r) * 0.72),
    transparent var(--r)
  );
}
.xray-stage.full .bones {
  -webkit-mask-image: linear-gradient(
    90deg,
    #000 var(--wipe, 100%),
    transparent calc(var(--wipe, 100%) + 4%)
  );
  mask-image: linear-gradient(
    90deg,
    #000 var(--wipe, 100%),
    transparent calc(var(--wipe, 100%) + 4%)
  );
}
.lens-ring {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: calc(var(--r) * 2);
  height: calc(var(--r) * 2);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(111, 211, 255, 0.45);
  pointer-events: none;
  background: repeating-conic-gradient(
    rgba(111, 211, 255, 0.6) 0 0.6deg,
    transparent 0.6deg 10deg
  );
  -webkit-mask: radial-gradient(
    circle,
    transparent calc(var(--r) - 9px),
    #000 calc(var(--r) - 8px)
  );
  mask: radial-gradient(
    circle,
    transparent calc(var(--r) - 9px),
    #000 calc(var(--r) - 8px)
  );
  transition: opacity 0.3s;
}
.lens-ring span {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  white-space: nowrap;
}
.xray-stage.full .lens-ring {
  opacity: 0;
}
.hotspots {
  position: absolute;
  inset: 0;
}
.hs {
  position: absolute;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
  background: none;
  border: 0;
  padding: 6px;
  cursor: pointer;
}
.hs.on {
  opacity: 1;
}
.xray-stage.full .hs {
  pointer-events: auto;
}
.hs i {
  display: block;
  width: 10px;
  height: 10px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: rgba(255, 90, 31, 0.3);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.12);
}
.hs.sel i {
  background: var(--accent);
}
.hs span {
  position: absolute;
  left: 18px;
  bottom: 14px;
  white-space: nowrap;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(10, 10, 11, 0.85);
  border-left: 2px solid var(--accent);
  padding: 3px 7px;
}
.xray-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 var(--pad);
  margin-top: -12px;
  position: relative;
  z-index: 3;
  max-width: 1500px;
  margin-inline: auto;
}
.readout {
  display: flex;
  gap: 14px;
  align-items: baseline;
  min-height: 26px;
  color: var(--muted);
  font-size: 15px;
}
.readout b {
  color: var(--cyan);
  font-weight: 500;
  flex: none;
}

/* LABS INTRO */
.labs-intro {
  padding: var(--gap) var(--pad) 0;
  border-top: 1px solid var(--line);
  margin-top: clamp(40px, 5vw, 64px);
  display: flex;
  align-items: baseline;
  gap: 32px;
  flex-wrap: wrap;
}
.labs-intro .tag {
  margin: 0;
}
.intro-text {
  font-size: clamp(18px, 1.6vw, 22px);
  color: var(--muted);
  max-width: 60ch;
}

/* LAB LAYOUT */
.lab {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
  padding: var(--gap) var(--pad) 0;
  max-width: 1500px;
  margin: 0 auto;
}
.lab-flip .lab-copy {
  order: 2;
}
.lab-copy h2,
.lab-wide h2 {
  font-family: var(--f-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(32px, 3.4vw, 52px);
  line-height: 0.95;
  margin-bottom: 14px;
}
.lab-copy > p:not(.tag):not(.formula) {
  color: var(--muted);
  max-width: 52ch;
}
.controls {
  margin-top: 24px;
  display: grid;
  gap: 16px;
}
.ctl span {
  display: flex;
  justify-content: space-between;
  color: var(--faint);
  margin-bottom: 6px;
}
.ctl b {
  color: var(--text);
  font-weight: 500;
}
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 24px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--accent) var(--p, 50%),
    var(--line-2) var(--p, 50%)
  );
}
input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--line-2);
}
input[type="range"]::-moz-range-progress {
  height: 2px;
  background: var(--accent);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -7px;
  background: var(--text);
  border: 3px solid var(--accent);
  border-radius: 0;
  transform: rotate(45deg);
}
input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--text);
  border: 3px solid var(--accent);
  border-radius: 0;
}
.stats {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.stats div {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.stats div:nth-child(odd) {
  padding-right: 16px;
}
.stats dt {
  color: var(--faint);
  font-size: 10px;
}
.stats dd {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(22px, 2vw, 30px);
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.stats dd.warn {
  color: var(--accent);
}
.stats dd.good {
  color: var(--green);
}
.stats dd.cold {
  color: var(--cyan);
}
.formula {
  margin-top: 14px;
  color: var(--faint);
  font-size: 10px;
  text-transform: none;
  letter-spacing: 0.03em;
}

.panel {
  background: var(--bg-2);
  border: 1px solid var(--line);
  position: relative;
}
.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--accent);
  z-index: 2;
  pointer-events: none;
}
.panel::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}
.panel::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}
.lab-viz {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.lab-viz canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.viz-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
}
.brake-viz img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 0.25s;
}
.brake-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 45% 50%,
    rgba(255, 110, 40, 0.55),
    transparent 55%
  );
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.25s;
}
.brake-viz canvas {
  top: auto;
  height: 38%;
  background: linear-gradient(transparent, rgba(10, 10, 11, 0.92) 30%);
}

/* DATA LAB */
.lab-wide {
  padding: var(--gap) var(--pad) 0;
  max-width: 1500px;
  margin: 0 auto;
}
.lab-copy.wide {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: end;
  margin-bottom: 24px;
}
.lab-copy.wide .tag {
  grid-column: 1/-1;
  margin: 0;
}
.lab-copy.wide h2 {
  margin: 0;
}
.tele .panel-head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  flex-wrap: wrap;
}
.seg {
  display: flex;
  border: 1px solid var(--line-2);
}
.seg button {
  background: none;
  border: 0;
  padding: 7px 12px;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.seg button[aria-selected="true"] {
  background: var(--text);
  color: var(--bg);
}
.lapinfo {
  margin-left: auto;
}
.lapinfo b {
  color: var(--text);
  font-weight: 500;
}
#trace {
  width: 100%;
  height: clamp(200px, 24vw, 280px);
  display: block;
}
.gauges {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
}
.gauges div {
  padding: 12px 14px;
  border-right: 1px solid var(--line);
}
.gauges div:last-child {
  border-right: 0;
}
.gauges span {
  display: block;
  color: var(--faint);
  font-size: 10px;
  margin-bottom: 2px;
}
.gauges b {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(24px, 2.4vw, 36px);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
#gGear {
  color: var(--accent);
}
.view-bus {
  height: calc(clamp(200px, 24vw, 280px) + 64px);
  display: flex;
  flex-direction: column;
}
.can-cols,
.can-log li {
  display: grid;
  grid-template-columns: 72px 52px 34px minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 10px;
  padding: 0 14px;
}
.can-cols {
  color: var(--faint);
  font-size: 10px;
  padding-block: 8px;
  border-bottom: 1px solid var(--line);
}
.can-log {
  list-style: none;
  flex: 1;
  overflow: hidden;
  font-size: 11px;
  padding: 4px 0;
  text-transform: none;
  letter-spacing: 0.02em;
  -webkit-mask-image: linear-gradient(#000 70%, transparent);
  mask-image: linear-gradient(#000 70%, transparent);
}
.can-log li {
  padding-block: 3px;
  color: var(--muted);
  white-space: nowrap;
}
.can-log li > span {
  overflow: hidden;
  text-overflow: ellipsis;
}
.can-log li:first-child {
  color: var(--text);
  background: rgba(111, 211, 255, 0.06);
}
.can-log .id {
  color: var(--cyan);
}
.can-log .m {
  color: var(--faint);
}
.howto {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.howto li {
  color: var(--muted);
  font-size: 15px;
  padding-left: 22px;
  position: relative;
}
.howto li b {
  color: var(--text);
  font-weight: 500;
}
.howto i {
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 3px;
}
.c-speed {
  background: var(--cyan);
}
.c-thr {
  background: var(--green);
}
.c-brk {
  background: var(--accent);
}

/* NEXT + DELTA */
.next {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding: var(--gap) var(--pad);
  max-width: 1500px;
  margin: 0 auto;
  align-items: end;
}
.next-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.next-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
}
.next-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  filter: grayscale(0.6) brightness(0.6);
  transition:
    filter 0.5s,
    transform 0.8s var(--ease);
}
.next-card:hover img {
  filter: none;
  transform: scale(1.03);
}
.next-card figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  background: linear-gradient(transparent, rgba(10, 10, 11, 0.95));
  font-weight: 500;
}
.next-card figcaption span {
  display: block;
  color: var(--accent);
  font-size: 10px;
  margin-bottom: 2px;
}
.delta {
  padding: 24px;
}
.delta h3 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 32px;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 10px;
}
.delta p:not(.tag) {
  color: var(--muted);
  font-size: 15px;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 22px var(--pad);
  border-top: 1px solid var(--line);
  color: var(--faint);
}

@media (max-width: 960px) {
  .lab,
  .lab-copy.wide,
  .next {
    grid-template-columns: 1fr;
  }
  .lab-flip .lab-copy {
    order: 0;
  }
  .howto {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}
@media (max-width: 640px) {
  .nav nav {
    gap: 16px;
    font-size: 13px;
  }
  .brand span {
    display: none;
  }
  .xray {
    margin-top: 12px;
    overflow: hidden;
  }
  .xray-stage {
    width: 135%;
    margin-left: -17.5%;
  }
  .xray-bar {
    margin-top: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .readout {
    flex-direction: column;
    gap: 2px;
  }
  .hs span {
    display: none;
  }
  .gauges {
    grid-template-columns: repeat(3, 1fr);
  }
  .gauges div:nth-child(3) {
    border-right: 0;
  }
  .gauges div:nth-child(n + 4) {
    border-top: 1px solid var(--line);
  }
  .can-cols,
  .can-log li {
    grid-template-columns: 64px 48px minmax(0, 1fr);
  }
  .can-cols span:nth-child(3),
  .can-cols span:nth-child(5),
  .can-log li > span:nth-child(3),
  .can-log li > span:nth-child(5) {
    display: none;
  }
  .next-grid {
    grid-template-columns: 1fr;
  }
  .lapinfo {
    margin-left: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
.view[hidden] {
  display: none !important;
}

/* Compact aero bench: controls and their changing chart stay together. */
#aero {
  display: block;
}
#aero > .lab-copy {
  max-width: 960px;
  margin-bottom: 24px;
}
#aero .lab-copy h2 {
  font-size: clamp(30px, 3.2vw, 48px);
}
#aero .lab-copy > p:not(.tag) {
  max-width: 78ch;
}
.aero-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 1fr);
}
.aero-chart {
  min-width: 0;
  border-right: 1px solid var(--line);
}
.chart-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.aero-plot {
  position: relative;
  height: 320px;
  overflow: hidden;
}
.aero-plot canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.aero-settings {
  padding: 16px 22px;
  min-width: 0;
}
.aero-instruction {
  font-size: 13px;
  color: var(--muted);
}
.aero-settings .controls {
  margin-top: 10px;
  gap: 8px;
}
.aero-settings .stats {
  margin-top: 8px;
}
.aero-settings .stats dt {
  font-size: 9px;
}
.aero-settings .stats dd {
  font-size: clamp(24px, 2.2vw, 32px);
}
.aero-settings .stats div {
  padding: 8px 0;
}
.control-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}
.control-label > span {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  color: var(--text);
  margin: 0;
  white-space: nowrap;
}
.aero-notes {
  grid-column: 1 / -1;
  padding: 8px 16px 12px;
  border-top: 1px solid var(--line);
}
.aero-notes .formula {
  margin: 0;
}
.unit-hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}
.unit-toggle {
  background: transparent;
  border: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0;
  line-height: 1.3;
  text-transform: none;
  color: var(--cyan);
  padding: 4px 2px;
  cursor: pointer;
  text-decoration: underline dotted;
  text-underline-offset: 4px;
}
.unit-toggle:hover {
  color: var(--text);
  background: #6fd3ff12;
}
.units-setting {
  background: #111113;
  border: 1px solid var(--line-2);
  padding: 7px 10px;
  color: var(--text);
  cursor: pointer;
  font-family: var(--f-mono);
  font-size: 11px;
  white-space: nowrap;
  min-height: 36px;
}
.units-setting:hover {
  border-color: var(--cyan);
}
.nav nav {
  margin-left: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.gauges .gauge-unit {
  display: block;
  margin-bottom: 2px;
}
.gauges .gauge-temperature {
  display: flex;
  align-items: center;
  gap: 4px;
}
.raw-units {
  font-size: 9px;
  color: var(--muted);
  padding: 6px 14px;
  text-transform: none;
}
@media (max-width: 760px) {
  .aero-workbench {
    grid-template-columns: 1fr;
  }
  .aero-chart {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .aero-plot {
    height: clamp(210px, 45vw, 280px);
  }
  .aero-settings {
    padding: 12px 16px;
  }
  .aero-settings .controls {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .aero-settings .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .aero-settings .stats div {
    padding-right: 8px;
  }
  .aero-settings .stats dt {
    min-height: 26px;
  }
  .nav {
    gap: 12px;
    padding: 10px var(--pad);
    flex-wrap: wrap;
  }
  .nav nav {
    gap: 14px;
  }
}
@media (max-width: 480px) {
  .units-prefix {
    display: none;
  }
  :root {
    --pad: 16px;
  }
  .nav {
    gap: 8px;
    padding: 8px 16px;
  }
  .nav nav {
    gap: 10px;
    font-size: 12px;
  }
  .brand {
    gap: 0;
  }
  .brand-mark {
    width: 22px;
    height: 22px;
  }
  .units-setting {
    min-height: 36px;
    padding: 6px;
    font-size: 10px;
  }
  #aero {
    padding-top: 48px;
  }
  #aero > .lab-copy {
    margin-bottom: 16px;
  }
  #aero .lab-copy h2 {
    font-size: 32px;
  }
  #aero .lab-copy > p:not(.tag) {
    font-size: 14px;
  }
  .chart-caption {
    font-size: 10px;
    padding: 6px 12px;
  }
  .aero-settings .stats {
    grid-template-columns: 1fr 1fr;
  }
  .aero-settings .stats dt {
    min-height: 0;
  }
  .aero-notes {
    padding: 8px 12px;
  }
  .unit-toggle {
    min-height: 32px;
  }
  .control-label {
    font-size: 10px;
  }
  .aero-settings input[type="range"] {
    height: 32px;
  }
}