:root {
  color-scheme: light dark;
  --background-color: #eef3f5;
  --background-soft-color: #dde8ec;
  --surface-color: #ffffff;
  --surface-muted-color: #e6eef1;
  --text-color: #101418;
  --muted-color: #59646b;
  --border-color: rgba(16, 20, 24, 0.12);
  --shadow-color: rgba(16, 20, 24, 0.16);
  --accent-color: #087ea4;
  --accent-strong-color: #075985;
  --on-accent-color: #ffffff;
  --cyan-color: #14b8a6;
  --violet-color: #6366f1;
  --deck-color: #161b22;
  --deck-dark-color: #080b10;
  --deck-shadow-color: rgba(0, 0, 0, 0.28);
  --deck-shadow-soft-color: rgba(0, 0, 0, 0.18);
  --key-color: #0c0d12;
  --key-soft-color: #171922;
  --key-text-color: #f1f3f8;
  --key-label-color: rgba(241, 243, 248, 0.62);
  --key-highlight-color: rgba(255, 255, 255, 0.06);
  --key-glare-strong-color: rgba(255, 255, 255, 0.08);
  --key-glare-soft-color: rgba(255, 255, 255, 0.03);
  --key-shadow-color: rgba(0, 0, 0, 0.38);
  --key-ring-track-color: rgba(255, 255, 255, 0.12);
  --key-warm-start-color: #102936;
  --key-cool-start-color: #0d2f33;
  --key-filled-end-color: #063244;
  --key-paper-color: #e8eef1;
  --key-paper-text-color: #101418;
  --key-paper-label-color: #617078;
  --key-terminal-start-color: #062021;
  --key-terminal-end-color: #02090b;
  --key-terminal-text-color: #b8fff4;
  --key-terminal-label-color: rgba(184, 255, 244, 0.62);
  --key-terminal-preview-text-color: #a7fff3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #090d11;
    --background-soft-color: #111922;
    --surface-color: #141b22;
    --surface-muted-color: #1d2730;
    --text-color: #f1f7fb;
    --muted-color: #a5b4be;
    --border-color: rgba(255, 255, 255, 0.12);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --accent-color: #38bdf8;
    --accent-strong-color: #0891b2;
    --on-accent-color: #ffffff;
    --cyan-color: #2dd4bf;
    --violet-color: #818cf8;
    --deck-color: #111820;
    --deck-dark-color: #05080b;
    --deck-shadow-color: rgba(0, 0, 0, 0.44);
    --deck-shadow-soft-color: rgba(0, 0, 0, 0.28);
    --key-color: #060a0f;
    --key-soft-color: #101722;
    --key-shadow-color: rgba(0, 0, 0, 0.46);
  }
}

* {
  box-sizing: border-box;
}

html {
  font-family: Inter, "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  background: var(--background-color);
  color: var(--text-color);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, var(--background-soft-color), transparent 28rem),
    var(--background-color);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 2;
  padding: 0.5rem 0.75rem;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  z-index: 1;
  background: var(--background-color);
}

.site-nav {
  width: min(1120px, calc(100% - 2rem));
  min-height: 4.25rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-color);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.brand::before {
  content: "";
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 0.65rem;
  background:
    linear-gradient(135deg, var(--accent-color), var(--accent-strong-color));
  box-shadow: inset 0 0 0 0.45rem rgba(255, 255, 255, 0.18);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.35rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted-color);
  text-decoration: none;
  font-size: 0.9rem;
}

.nav-links a:hover {
  color: var(--text-color);
}

.home-hero,
.studio-hero {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 0.5rem;
  text-align: center;
}

.hero-tag,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--muted-color);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-hero h1,
.studio-hero h1 {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(2.375rem, 6vw, 4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.home-hero h1 span {
  color: var(--accent-color);
}

.hero-lede,
.studio-lede {
  max-width: 620px;
  margin: 0.9rem auto 0;
  color: var(--muted-color);
  font-size: 1.125rem;
}

.hero-actions {
  display: inline-flex;
  justify-content: center;
  gap: 0.875rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}

.action-button {
  display: inline-flex;
  min-width: 0;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1.375rem;
  border: 1px solid var(--border-color);
  border-radius: 0.875rem;
  text-align: left;
  text-decoration: none;
  line-height: 1.08;
  box-shadow: 0 1rem 2.5rem var(--shadow-color);
}

.button-icon {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 0.5rem;
  background: var(--accent-color);
  color: var(--on-accent-color);
  font-size: 1rem;
  font-weight: 900;
}

.button-text {
  display: grid;
  gap: 0.2rem;
}

.button-text small {
  color: inherit;
  font-size: 0.7rem;
  opacity: 0.66;
}

.button-text strong {
  font-size: 1rem;
}

.hero-note {
  margin: 0.875rem 0 0;
  color: var(--muted-color);
  font-size: 0.82rem;
}

.action-button-primary {
  background: var(--text-color);
  color: var(--background-color);
}

.action-button-secondary {
  background: var(--surface-color);
  color: var(--text-color);
}

.action-button-secondary .button-icon {
  background: var(--text-color);
  color: var(--background-color);
}

.deck-stage,
.studio-deck {
  width: min(880px, calc(100% - 2rem));
  margin: 3.5rem auto 4rem;
  perspective: 1400px;
}

.stream-deck,
.studio-device {
  padding: 1.375rem;
  border-radius: 1.75rem;
  background: linear-gradient(180deg, var(--deck-color), var(--deck-dark-color));
  box-shadow:
    0 1.875rem 3.75rem var(--deck-shadow-color),
    0 0.5rem 1.125rem var(--deck-shadow-soft-color),
    inset 0 1px 0 var(--key-highlight-color);
}

.stream-deck {
  margin-bottom: 0;
  transform: rotateX(8deg);
  transform-origin: center bottom;
}

.studio-device {
  transform: rotateX(18deg) rotateZ(-1deg);
  transform-origin: center bottom;
}

.deck-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.875rem;
}

.metric-key {
  position: relative;
  min-width: 0;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 0.75rem;
  border-radius: 0.75rem;
  background: linear-gradient(160deg, var(--key-soft-color), var(--key-color));
  color: var(--key-text-color);
  box-shadow:
    inset 0 1px 0 var(--key-highlight-color),
    0 0.45rem 0.8rem var(--key-shadow-color);
}

.metric-key::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, var(--key-glare-strong-color), transparent 45%, var(--key-glare-soft-color));
  pointer-events: none;
}

.metric-key span {
  color: var(--key-label-color);
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.metric-key strong {
  font-size: 1.375rem;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.key-warm {
  background: linear-gradient(160deg, var(--key-warm-start-color), var(--key-color));
}

.key-warm strong,
.key-warm svg polyline {
  color: var(--accent-color);
  stroke: var(--accent-color);
}

.key-cool,
.key-glass {
  background: linear-gradient(160deg, var(--key-cool-start-color), var(--key-color));
}

.key-cool strong,
.key-cool svg polyline,
.key-glass strong {
  color: var(--cyan-color);
  stroke: var(--cyan-color);
}

.key-filled {
  background: linear-gradient(160deg, var(--accent-strong-color), var(--key-filled-end-color));
}

.key-paper {
  background: var(--key-paper-color);
  color: var(--key-paper-text-color);
}

.key-paper span {
  color: var(--key-paper-label-color);
}

.key-terminal {
  background: linear-gradient(160deg, var(--key-terminal-start-color), var(--key-terminal-end-color));
  color: var(--key-terminal-text-color);
}

.key-terminal span {
  color: var(--key-terminal-label-color);
}

.key-ring i {
  position: absolute;
  right: 0.65rem;
  bottom: 0.65rem;
  width: 2.25rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(currentColor calc(var(--progress) * 360deg), var(--key-ring-track-color) 0);
  color: var(--accent-color);
  mask: radial-gradient(circle, transparent 42%, black 44%);
}

.key-cool.key-ring i,
.key-glass.key-ring i {
  color: var(--cyan-color);
}

.key-paper.key-ring i {
  color: var(--accent-strong-color);
  background: conic-gradient(currentColor calc(var(--progress) * 360deg), var(--border-color) 0);
}

.metric-key svg {
  width: 100%;
  height: 1.5rem;
}

.metric-key polyline,
.mini-key polyline {
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 2.5;
}

.step-grid,
.home-panel,
.faq-panel,
.feature-row,
.sellpoint-section,
.variant-gallery,
.page-shell {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.sellpoint-section {
  width: min(1480px, calc(100% - 2.5rem));
  padding: 8rem 0 4rem;
}

.sellpoint-section header {
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
}

.sellpoint-section h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1;
}

.sellpoint-section header p {
  margin: 1.25rem 0 0;
  color: var(--muted-color);
  font-size: 1.35rem;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 0 4rem;
}

.step-card {
  min-height: 13rem;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--surface-color);
  box-shadow: 0 1rem 2.5rem var(--shadow-color);
}

.step-number,
.feature-row span {
  color: var(--accent-strong-color);
  font-size: 0.78rem;
  font-weight: 800;
}

.step-card h2,
.feature-row h2,
.feature-row h3 {
  margin: 0.65rem 0 0.45rem;
  font-size: 1.12rem;
}

.step-card p,
.feature-row p,
.home-panel p,
.faq-panel p,
.page-content p,
.page-content li,
.content-panel p {
  color: var(--muted-color);
}

.home-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: start;
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
}

.home-panel h2,
.variant-gallery h2 {
  margin: 0;
  max-width: 620px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
}

.faq-panel {
  padding: 1rem 0 4rem;
}

details {
  border-top: 1px solid var(--border-color);
  padding: 1rem 0;
}

details:last-child {
  border-bottom: 1px solid var(--border-color);
}

summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 800;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  color: var(--muted-color);
  font-size: 1.35rem;
  font-weight: 400;
}

details[open] summary::after {
  content: "-";
}

.studio-hero {
  width: min(1320px, calc(100% - 2rem));
  padding: 7rem 0 0;
  padding-bottom: 0;
}

.studio-hero h1 {
  max-width: 1240px;
  font-size: clamp(4.2rem, 7.2vw, 7.2rem);
  line-height: 1.02;
}

.studio-lede {
  max-width: 860px;
  margin-top: 1.2rem;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
}

.studio-deck {
  width: min(1120px, calc(100% - 2rem));
  margin-top: 3rem;
  margin-bottom: 9rem;
  perspective: 1500px;
}

.feature-row {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
}

.feature-row article {
  min-height: 14rem;
  padding: 2rem 2rem 1.25rem;
}

.feature-row article + article {
  border-left: 1px solid var(--border-color);
}

.variant-preview {
  display: grid;
  grid-template-columns: repeat(4, 5.25rem);
  justify-content: center;
  gap: 1.3rem clamp(2rem, 7vw, 5.5rem);
  margin: 2.75rem auto 0;
  padding: 2.25rem 0 2.5rem;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background:
    radial-gradient(circle at 50% 0, color-mix(in srgb, var(--accent-color) 9%, transparent), transparent 34rem),
    linear-gradient(180deg, transparent, color-mix(in srgb, var(--surface-color) 34%, transparent), transparent);
}

.variant-preview .mini-key {
  justify-self: center;
  width: 5.25rem;
  margin: 0;
  box-shadow:
    0 0.9rem 1.8rem var(--shadow-color),
    inset 0 1px 0 var(--key-highlight-color);
}

.variant-gallery {
  padding: 4.5rem 0 5rem;
}

.variant-gallery header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.mini-key {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 0.5rem;
  border-radius: 0.625rem;
  background: var(--key-color);
  color: var(--key-text-color);
  box-shadow: 0 1rem 2.5rem var(--shadow-color);
}

.mini-key span {
  color: var(--key-label-color);
  font-size: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mini-key strong {
  font-size: 1rem;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.mini-warm {
  background: linear-gradient(160deg, var(--key-warm-start-color), var(--key-color));
  color: var(--accent-color);
}

.mini-cool {
  background: linear-gradient(160deg, var(--key-cool-start-color), var(--key-color));
  color: var(--cyan-color);
}

.mini-terminal {
  background: linear-gradient(160deg, var(--key-terminal-start-color), var(--key-terminal-end-color));
  color: var(--key-terminal-preview-text-color);
}

.mini-paper {
  background: var(--key-paper-color);
  color: var(--key-paper-text-color);
}

.mini-paper span {
  color: var(--key-paper-label-color);
}

.mini-ring::after {
  content: "";
  position: absolute;
  right: 0.375rem;
  bottom: 0.375rem;
  width: 1.625rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(currentColor 151deg, var(--key-ring-track-color) 0);
  mask: radial-gradient(circle, transparent 42%, black 44%);
}

.mini-paper.mini-ring::after {
  background: conic-gradient(var(--accent-strong-color) 151deg, var(--border-color) 0);
}

.mini-bar b {
  display: block;
  height: 0.32rem;
  margin-top: 0.4rem;
  border-radius: 999px;
  background: var(--key-ring-track-color);
}

.mini-bar b::after {
  content: "";
  display: block;
  width: 42%;
  height: 100%;
  border-radius: inherit;
  background: currentColor;
}

.mini-paper.mini-bar b {
  background: var(--border-color);
}

.mini-line svg {
  width: 100%;
  height: 1.625rem;
}

.page-header {
  max-width: 760px;
  padding: 4.5rem 0 1rem;
}

.page-header p:last-child {
  color: var(--muted-color);
  font-size: 1.12rem;
}

.page-content,
.content-panel {
  max-width: 760px;
  padding: 2rem 0 4rem;
}

.page-content code {
  padding: 0.1rem 0.3rem;
  background: var(--surface-muted-color);
  border-radius: 0.25rem;
  color: var(--text-color);
}

.link-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 2rem;
}

.link-list a {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--surface-color);
  color: var(--text-color);
  text-decoration: none;
}

.link-list small {
  color: var(--muted-color);
}

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

.site-footer p {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0;
  color: var(--muted-color);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .feature-row,
  .step-grid,
  .home-panel {
    grid-template-columns: 1fr;
  }

  .feature-row article + article {
    border-left: 0;
    border-top: 1px solid var(--border-color);
  }

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

  .variant-preview {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    padding: 1.5rem 0;
  }

  .variant-preview .mini-key {
    width: 4.75rem;
  }
}

@media (max-width: 720px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .home-hero,
  .studio-hero {
    padding-top: 3rem;
    text-align: left;
  }

  .home-hero h1,
  .studio-hero h1 {
    font-size: clamp(3.2rem, 15vw, 4.8rem);
  }

  .hero-lede,
  .studio-lede {
    margin-left: 0;
    margin-right: 0;
  }

  .hero-actions {
    display: grid;
    width: 100%;
  }

  .action-button {
    min-width: 0;
    width: 100%;
  }

  .stream-deck,
  .studio-device {
    margin-bottom: 0;
    transform: none;
    border-radius: 0.85rem;
  }

  .deck-grid {
    gap: 0.45rem;
  }

  .metric-key {
    border-radius: 0.55rem;
  }

  .studio-deck {
    margin-bottom: 4rem;
  }
}

@media (max-width: 520px) {
  .deck-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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