:root {
  color-scheme: dark;
  --ink: #f4efe6;
  --muted: #a59a8c;
  --dim: #756b60;
  --black: #080706;
  --panel: #12100e;
  --panel-2: #1a1612;
  --line: rgba(244, 239, 230, 0.12);
  --line-strong: rgba(218, 143, 74, 0.38);
  --copper: #d88a42;
  --copper-2: #f0bd78;
  --ember: rgba(216, 138, 66, 0.16);
  --shadow: 0 34px 120px rgba(0, 0, 0, 0.56);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 12%, rgba(216, 138, 66, 0.15), transparent 31%),
    radial-gradient(circle at 20% 88%, rgba(118, 77, 45, 0.18), transparent 36%),
    linear-gradient(180deg, #080706 0%, #0e0c0a 42%, #080706 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.75), transparent 72%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  mix-blend-mode: soft-light;
  background-image:
    repeating-radial-gradient(circle at 0 0, rgba(255,255,255,0.34) 0 1px, transparent 1px 7px);
}

a {
  color: inherit;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(var(--max), calc(100% - 32px));
  min-height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  backdrop-filter: blur(18px);
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 720;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 13px;
  height: 13px;
  display: inline-block;
  border-radius: 999px;
  background: radial-gradient(circle, #f5c981 0 32%, #d66d28 34% 70%, transparent 72%);
  box-shadow: 0 0 0 7px rgba(216, 138, 66, 0.12), 0 0 30px rgba(216, 138, 66, 0.55);
}

nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

nav a {
  min-width: 74px;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

nav a:hover {
  border-color: var(--line);
  color: var(--ink);
}

.language {
  display: grid;
  grid-template-columns: repeat(2, 42px);
  border: 1px solid var(--line);
  background: rgba(18, 16, 14, 0.64);
}

.language button {
  min-width: 42px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 17px;
  filter: saturate(0.42);
}

.language button.is-active {
  background: var(--ink);
  filter: saturate(1);
}

main,
footer {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 0.76fr);
  align-items: center;
  gap: 64px;
  padding: 32px 0 76px;
}

.overline {
  margin: 0 0 18px;
  color: var(--copper-2);
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 26px;
  font-size: clamp(64px, 8.5vw, 118px);
  line-height: 0.88;
  font-weight: 560;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 760;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, #f0bd78, #c96f30);
  color: #100b07;
  box-shadow: 0 18px 44px rgba(216, 138, 66, 0.22);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.035);
  color: var(--ink);
}

.stage {
  position: relative;
  min-height: 560px;
  display: grid;
  align-content: end;
  padding: 28px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 22%, rgba(216, 138, 66, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.018));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.stage::before {
  content: "";
  position: absolute;
  inset: 26px;
  border: 1px solid rgba(216, 138, 66, 0.2);
  pointer-events: none;
}

.stage-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240, 189, 120, 0.42), transparent);
}

.device-frame {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
}

.device-frame img {
  width: auto;
  max-width: 86%;
  max-height: 330px;
  object-fit: contain;
  filter: drop-shadow(0 36px 42px rgba(0, 0, 0, 0.55));
  transform: translateY(-6px);
}

.signal-readout {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.signal-readout span {
  color: var(--copper-2);
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.signal-readout strong {
  font-size: 30px;
  line-height: 1.05;
}

.signal-readout small {
  max-width: 34ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.48;
}

.builder,
.tour,
.inquiry {
  padding: 92px 0;
  border-top: 1px solid var(--line);
}

.builder-intro,
.tour-head {
  max-width: 780px;
  margin-bottom: 38px;
}

.builder-intro h2,
.tour-head h2,
.inquiry h2 {
  margin-bottom: 18px;
  font-size: clamp(42px, 5.5vw, 82px);
  line-height: 0.94;
  font-weight: 540;
  letter-spacing: 0;
}

.builder-intro p:not(.overline),
.inquiry p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.62;
}

.builder-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.52fr);
  gap: 18px;
  align-items: start;
}

.questions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.question,
.product-option,
.contact {
  border: 1px solid var(--line);
  background: rgba(18, 16, 14, 0.72);
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.question {
  min-height: 174px;
  padding: 22px;
}

.question span {
  display: block;
  margin-bottom: 30px;
  font-size: 21px;
  line-height: 1.2;
  font-weight: 620;
}

.question small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.question.is-active,
.product-option.is-active {
  border-color: var(--line-strong);
  background:
    linear-gradient(135deg, rgba(216, 138, 66, 0.2), rgba(18, 16, 14, 0.78));
  box-shadow: inset 0 0 0 1px rgba(240, 189, 120, 0.08);
}

.recommendation {
  position: sticky;
  top: 96px;
  padding: 24px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255,255,255,0.025)),
    #100e0c;
  box-shadow: var(--shadow);
}

.recommendation h3 {
  margin-bottom: 12px;
  font-size: 30px;
  line-height: 1.05;
}

.recommendation p {
  color: var(--muted);
  line-height: 1.58;
}

.device-choice {
  display: grid;
  gap: 10px;
  margin: 24px 0;
}

.product-option {
  min-height: 76px;
  padding: 16px;
}

.product-option span,
.contact span {
  display: block;
  font-size: 17px;
  font-weight: 720;
}

.product-option small,
.contact small {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.price-block {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.price-block span {
  display: block;
  color: var(--copper-2);
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.price-block strong {
  display: block;
  margin: 8px 0;
  font-size: 38px;
}

.price-block small {
  color: var(--dim);
  line-height: 1.4;
}

.capability-rail {
  display: grid;
  border-top: 1px solid var(--line);
}

.capability {
  display: grid;
  grid-template-columns: 90px minmax(220px, 0.52fr) minmax(0, 1fr);
  gap: 28px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.capability span {
  color: var(--copper-2);
  font-weight: 820;
  letter-spacing: 0.12em;
}

.capability h3 {
  margin-bottom: 0;
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.02;
  font-weight: 520;
}

.capability p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.62;
}

.inquiry {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 0.72fr);
  gap: 46px;
  align-items: start;
}

.inquiry-panel {
  border: 1px solid var(--line);
  background: rgba(18, 16, 14, 0.72);
  box-shadow: var(--shadow);
}

pre {
  min-height: 220px;
  margin: 0;
  padding: 24px;
  white-space: pre-wrap;
  color: #d9d0c4;
  border-bottom: 1px solid var(--line);
  font: 14px/1.7 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.contact-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact {
  min-height: 92px;
  display: block;
  padding: 18px;
  border-width: 0 1px 0 0;
  text-decoration: none;
}

.contact:last-child {
  border-right: 0;
}

.contact:hover {
  background: var(--ember);
}

.contact.is-muted {
  opacity: 0.62;
}

footer {
  padding: 38px 0 58px;
  color: var(--dim);
  border-top: 1px solid var(--line);
}

footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .topbar {
    min-height: auto;
    padding: 16px 0;
    flex-wrap: wrap;
  }

  nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  nav a {
    flex: 1;
    border-color: var(--line);
    background: rgba(18, 16, 14, 0.54);
  }

  .hero,
  .builder-grid,
  .inquiry {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 36px;
    padding: 42px 0 56px;
  }

  .stage {
    min-height: 480px;
  }

  .recommendation {
    position: static;
  }

  .capability {
    grid-template-columns: 64px 1fr;
  }

  .capability p {
    grid-column: 2;
  }
}

@media (max-width: 640px) {
  main,
  footer,
  .topbar {
    width: min(100% - 24px, var(--max));
  }

  h1 {
    font-size: clamp(54px, 17vw, 76px);
  }

  .hero-actions,
  .questions,
  .contact-actions {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .stage {
    min-height: 420px;
    padding: 20px;
  }

  .stage::before {
    inset: 16px;
  }

  .device-frame {
    min-height: 270px;
  }

  .device-frame img {
    max-height: 240px;
  }

  .builder,
  .tour,
  .inquiry {
    padding: 66px 0;
  }

  .question {
    min-height: 138px;
  }

  .question span {
    margin-bottom: 22px;
    font-size: 19px;
  }

  .capability {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .capability p {
    grid-column: auto;
  }

  .contact {
    border-width: 0 0 1px;
  }

  .contact:last-child {
    border-bottom: 0;
  }
}