:root {
  --ink: #0a0a0b;
  --steel: #141416;
  --iron: #1b1c1f;
  --plate: #2c2f33;
  --ash: #8d9298;
  --mist: #b9bcc0;
  --bone: #ece9e6;
  --blood: #d61c24;
  --blood-hot: #f0323a;
  --blood-deep: #5a0b0f;
  --f-display: "Big Shoulders Display", "Arial Narrow", Impact, sans-serif;
  --f-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  background: var(--ink);
}

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  color: var(--bone);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

b {
  font-weight: 600;
}

:focus-visible {
  outline: 2px solid var(--blood-hot);
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 11, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--plate);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  flex-shrink: 0;
}

.site-header nav {
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-header nav::-webkit-scrollbar {
  display: none;
}

.site-header ul {
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header nav a {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ash);
  white-space: nowrap;
  padding-block: 6px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.site-header nav a:hover {
  color: var(--bone);
  border-color: var(--blood);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blood-hot);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--blood);
  flex-shrink: 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding-block: 72px 88px;
}

.hero-copy {
  min-width: 0;
}

h1 {
  margin: 0 0 26px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(3.3rem, 9.4vw, 8rem);
  line-height: 0.86;
  letter-spacing: -0.005em;
  text-transform: uppercase;
}

h1 .line {
  display: block;
}

h1 .red {
  color: var(--blood);
}

.lede {
  max-width: 46ch;
  margin: 0 0 30px;
  font-size: 1.15rem;
  color: var(--mist);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hint {
  margin: 16px 0 0;
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--ash);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 26px;
  border: 1px solid var(--plate);
  border-radius: 2px;
  background: transparent;
  color: var(--bone);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn-red {
  background: var(--blood);
  border-color: var(--blood);
}

.btn-red:hover {
  background: var(--blood-hot);
  border-color: var(--blood-hot);
}

.btn-ghost:hover {
  border-color: var(--bone);
}

.btn[aria-pressed="true"] {
  border-color: var(--blood);
  color: var(--blood-hot);
}

.btn:active,
.btn.down {
  transform: translateY(2px) scale(0.985);
}

.btn:disabled {
  cursor: default;
  opacity: 0.7;
}

.rev-btn {
  min-width: 190px;
  touch-action: none;
}

.tach-wrap {
  width: 100%;
  max-width: 470px;
  margin-inline: auto;
  transition: filter 0.3s;
}

.tach-wrap.hot {
  filter: drop-shadow(0 0 30px rgba(214, 28, 36, 0.5));
}

.tach-wrap svg {
  display: block;
  width: 100%;
  height: auto;
}

.tach-bezel {
  fill: #101113;
  stroke: var(--plate);
  stroke-width: 4;
}

.tach-face {
  fill: #0c0c0e;
  stroke: #000;
  stroke-width: 2;
}

.tick {
  stroke: var(--ash);
  stroke-width: 1.5;
}

.tick.major {
  stroke: var(--bone);
  stroke-width: 3;
}

.tick.hot {
  stroke: var(--blood);
}

.tick-label {
  fill: var(--bone);
  font-family: var(--f-display);
  font-size: 22px;
  font-weight: 700;
}

.tick-label.hot {
  fill: var(--blood);
}

.tach-red {
  fill: none;
  stroke: var(--blood);
  stroke-width: 5;
  stroke-linecap: butt;
}

.tach-unit {
  fill: var(--ash);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
}

.tach-read {
  fill: var(--bone);
  font-family: var(--f-display);
  font-size: 40px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.needle {
  stroke: var(--blood);
  stroke-width: 4;
  stroke-linecap: round;
}

.hub {
  fill: var(--plate);
  stroke: var(--ink);
  stroke-width: 3;
}

.tach-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
}

.tach-meta b {
  color: var(--bone);
  font-weight: 500;
}

#revStatus {
  color: var(--bone);
}

.tach-wrap.hot #revStatus {
  color: var(--blood-hot);
}

.hazard {
  height: 10px;
  background: repeating-linear-gradient(-45deg, var(--blood) 0 14px, var(--ink) 14px 28px);
}

.section {
  padding-block: 96px;
  border-top: 1px solid var(--plate);
}

.hazard + .section {
  border-top: 0;
}

.sec-head {
  max-width: 62ch;
  margin-bottom: 40px;
}

.sec-head p:last-child {
  margin-bottom: 0;
}

h2 {
  margin: 0 0 16px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
  line-height: 0.95;
  text-transform: uppercase;
  text-wrap: balance;
}

.sec-head p {
  color: var(--mist);
}

.scope {
  border: 1px solid var(--plate);
  background: #0c0c0d;
}

#screamCanvas {
  display: block;
  width: 100%;
  height: 260px;
}

.scope-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 14px 18px;
  border-top: 1px solid var(--plate);
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ash);
}

.scope-meta b {
  color: var(--bone);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

#screamNote {
  color: var(--blood-hot);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 24px;
  background: var(--steel);
  border: 1px solid var(--plate);
  border-radius: 2px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--blood);
  transform: translateY(-4px);
  box-shadow: 0 14px 30px -18px rgba(214, 28, 36, 0.6);
}

.tag {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ash);
}

.card h3 {
  margin: 10px 0 12px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 2.5rem;
  line-height: 0.95;
  text-transform: uppercase;
}

.card p:not(.tag) {
  flex: 1;
  margin: 0 0 22px;
  font-size: 0.95rem;
  color: var(--mist);
}

.stat {
  display: grid;
  gap: 6px;
  margin-top: 12px;
}

.stat span {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
}

.meter {
  height: 4px;
  background: var(--plate);
}

.meter i {
  display: block;
  height: 100%;
  width: var(--v);
  background: var(--blood);
}

.pit {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.pit .sec-head {
  margin-bottom: 0;
}

.pit .btn {
  margin-top: 26px;
}

.pads {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.pad {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  aspect-ratio: 1 / 1;
  padding: 16px;
  background: var(--steel);
  border: 1px solid var(--plate);
  border-radius: 2px;
  color: var(--bone);
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.08s, border-color 0.08s, transform 0.08s;
}

.pad b {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1;
}

.pad small {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ash);
}

.pad.on {
  background: var(--blood);
  border-color: var(--blood-hot);
  transform: scale(0.97);
}

.pad.on small {
  color: var(--bone);
}

.bench {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.bench > div {
  min-width: 0;
}

.bench .sec-head {
  margin-bottom: 28px;
}

.panel {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 32px 18px 24px;
  background: #101113;
  border: 1px solid var(--plate);
  border-radius: 2px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.panel::before,
.panel::after {
  content: "";
  position: absolute;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #555a60, #22242a);
}

.panel::before {
  left: 10px;
}

.panel::after {
  right: 10px;
}

.panel.live {
  border-color: var(--blood);
  box-shadow: 0 0 40px -10px rgba(214, 28, 36, 0.7);
}

.breaker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 8px 4px;
  background: transparent;
  border: 0;
  color: var(--bone);
  cursor: pointer;
  touch-action: manipulation;
}

.led {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blood-deep);
  transition: background 0.2s, box-shadow 0.2s;
}

.breaker[aria-pressed="true"] .led {
  background: var(--blood-hot);
  box-shadow: 0 0 16px 2px var(--blood);
}

.slot {
  position: relative;
  width: 46px;
  height: 94px;
  background: #050506;
  border: 1px solid var(--plate);
  border-radius: 6px;
}

.slot::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 46px;
  width: 34px;
  height: 40px;
  background: linear-gradient(#9aa0a6, #5d6268);
  border-radius: 4px;
  transition: top 0.15s, background 0.15s;
}

.breaker[aria-pressed="true"] .slot::after {
  top: 6px;
  background: linear-gradient(var(--blood-hot), var(--blood));
}

.b-name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.b-sub {
  font-family: var(--f-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ash);
  text-align: center;
}

.panel-status {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 18px 0 0;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.panel-status b {
  color: var(--blood-hot);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.spec {
  margin: 0;
  border-top: 1px dashed var(--plate);
}

.spec .row {
  display: grid;
  grid-template-columns: minmax(110px, 190px) 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--plate);
}

.spec dt {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
  padding-top: 3px;
}

.spec dd {
  margin: 0;
  color: var(--bone);
}

.cert {
  position: relative;
  max-width: 780px;
  margin-inline: auto;
  padding: 56px 48px 40px;
  background: var(--bone);
  color: var(--ink);
  box-shadow: inset 0 0 0 8px var(--bone), inset 0 0 0 11px var(--blood), 0 30px 60px -30px rgba(0, 0, 0, 0.9);
  overflow: hidden;
}

.cert-kicker {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #5b5f64;
}

.cert h2 {
  margin: 0 0 22px;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  color: var(--ink);
}

.cert h2 span {
  color: var(--blood);
}

.cert-body {
  max-width: 52ch;
  margin: 0 0 36px;
  font-size: 1.08rem;
  color: #26282b;
}

.cert-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.sign {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 200px;
}

.sign-name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 2.2rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sign-line {
  padding-top: 8px;
  border-top: 1px solid var(--ink);
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5b5f64;
}

.stamp {
  display: grid;
  place-items: center;
  min-width: 190px;
  padding: 10px 20px;
  border: 3px dashed #9a9ea3;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 2.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9a9ea3;
}

.stamp-on {
  display: none;
}

.cert.stamped .stamp {
  border: 5px solid var(--blood);
  color: var(--blood);
  transform: rotate(-12deg);
  animation: stampIn 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
}

.cert.stamped .stamp-off {
  display: none;
}

.cert.stamped .stamp-on {
  display: block;
}

.cert-action {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}

.letter {
  max-width: 760px;
}

.letter p:not(.eyebrow):not(.signature) {
  max-width: 62ch;
  margin: 0 0 20px;
  color: var(--mist);
}

.signature {
  margin: 28px 0 0;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 3rem;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blood);
}

.site-footer {
  border-top: 1px solid var(--plate);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-block: 32px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
}

.foot a {
  text-decoration: none;
}

.foot a:hover {
  color: var(--bone);
}

.rise {
  animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.d1 {
  animation-delay: 0.05s;
}

.d2 {
  animation-delay: 0.18s;
}

.d3 {
  animation-delay: 0.3s;
}

.d4 {
  animation-delay: 0.42s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes stampIn {
  from {
    opacity: 0;
    transform: rotate(-12deg) scale(1.9);
  }
  to {
    opacity: 0.95;
    transform: rotate(-12deg) scale(1);
  }
}

@media (max-width: 1000px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pit,
  .bench {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 48px 64px;
  }

  .section {
    padding-block: 72px;
  }
}

@media (max-width: 560px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .cert {
    padding: 40px 28px 32px;
  }

  .spec .row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .rev-btn {
    flex: 1 1 100%;
  }

  #screamCanvas {
    height: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}