:root {
  color-scheme: dark;
  --bg: #090b0f;
  --surface: #11161d;
  --surface-2: #171d26;
  --surface-3: #1d2530;
  --line: #303a47;
  --line-strong: #52606f;
  --text: #f4f7fb;
  --muted: #aab5c3;
  --dim: #7f8b9a;
  --cyan: #43dce8;
  --green: #9ce56d;
  --coral: #ff8b73;
  --amber: #ffd06a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(135deg, #080a0d 0%, #111720 52%, #0b0d12 100%);
  background-size: 28px 28px, 28px 28px, auto;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(67, 220, 232, 0.08), transparent 34%),
    linear-gradient(110deg, transparent 0 56%, rgba(255, 139, 115, 0.08) 56% 72%, transparent 72%);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

code {
  padding: 0.08rem 0.34rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 0.95em;
}

.site-header,
main,
.site-footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  background: rgba(9, 11, 15, 0.82);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #050607;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  flex-wrap: wrap;
}

.site-nav a,
.back-link {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 9px 12px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 650;
  font-size: 0.92rem;
}

.site-nav a:hover,
.back-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

main {
  padding: 18px 0 46px;
}

.hero,
.section {
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(23, 29, 38, 0.92), rgba(14, 18, 24, 0.94));
  box-shadow: var(--shadow);
}

.hero {
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 28px;
  padding: clamp(24px, 5vw, 58px);
  overflow: hidden;
}

.hero-home {
  position: relative;
}

.hero-home::after,
.device-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 42%;
  height: 6px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--coral));
}

.hero-copy {
  max-width: 680px;
}

.eyebrow,
.kicker,
.status,
.chip {
  margin: 0 0 12px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.76rem;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0 0 16px;
  max-width: 12ch;
  font-size: clamp(3.2rem, 8vw, 7.6rem);
  line-height: 0.9;
}

h2 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 0.98;
}

h3 {
  margin: 0;
  font-size: 1.18rem;
}

.lede {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.24rem);
  line-height: 1.66;
}

.hero-actions,
.firmware-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.button,
.download-button,
.install-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 12px 16px;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary,
.install-button {
  background: var(--cyan);
  color: #041114;
}

.button.secondary,
.download-button {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.button:hover,
.download-button:hover,
.install-button:hover {
  transform: translateY(-1px);
}

.hero-media {
  min-height: 360px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, rgba(67, 220, 232, 0.09), transparent 46%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.hero-media img {
  width: min(100%, 480px);
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.4));
}

.section {
  margin-top: 16px;
  padding: clamp(22px, 4vw, 42px);
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.section-head p:last-child,
.split p,
.device-card p,
.steps-grid p,
.panel p,
.firmware-copy,
.microcopy,
.status-box,
.empty-state {
  color: var(--muted);
  line-height: 1.62;
}

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

.device-card,
.steps-grid article,
.panel,
.file-card,
.check-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.device-card {
  min-height: 360px;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 18px;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.device-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: rgba(67, 220, 232, 0.055);
}

.device-card img {
  width: 100%;
  height: 190px;
  object-fit: contain;
  border-radius: var(--radius);
  background: #0a0d12;
}

.device-card p {
  margin: 0;
}

.text-link {
  color: var(--green);
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 28px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.steps-grid article {
  padding: 16px;
}

.steps-grid span {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: var(--radius);
  background: var(--green);
  color: #081107;
  font-weight: 900;
}

.firmware-section {
  background:
    linear-gradient(90deg, rgba(67, 220, 232, 0.08), transparent 42%),
    linear-gradient(180deg, rgba(23, 29, 38, 0.94), rgba(14, 18, 24, 0.94));
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 0 0 28px;
  color: var(--dim);
  font-size: 0.92rem;
}

.device-hero {
  position: relative;
  grid-template-columns: minmax(240px, 360px) 1fr;
  min-height: 430px;
}

.device-hero .hero-media {
  min-height: 270px;
}

.device-hero h1 {
  max-width: 14ch;
  font-size: clamp(2.6rem, 6vw, 5.6rem);
}

.quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.quick-nav a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 9px 11px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 750;
}

.quick-nav a:hover {
  color: var(--text);
  border-color: var(--cyan);
}

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

.check-card {
  padding: 14px;
}

.check-card strong {
  display: block;
  margin-bottom: 6px;
}

.check-card span {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.48;
}

.attention {
  border-color: rgba(255, 208, 106, 0.34);
  background:
    linear-gradient(110deg, rgba(255, 208, 106, 0.12), transparent 50%),
    linear-gradient(180deg, rgba(34, 31, 24, 0.94), rgba(17, 21, 27, 0.96));
}

.ordered-steps {
  margin: 16px 0 0;
  padding-left: 1.45rem;
  line-height: 1.72;
}

.ordered-steps li + li {
  margin-top: 6px;
}

.note {
  margin-top: 16px;
  border: 1px solid rgba(255, 208, 106, 0.32);
  border-radius: var(--radius);
  padding: 12px 14px;
  background: rgba(255, 208, 106, 0.07);
  color: #fff2ca;
  line-height: 1.58;
}

.firmware-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 16px;
  align-items: start;
}

.panel {
  padding: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 850;
}

select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 12px 14px;
  appearance: none;
  background: #0d1117;
  color: var(--text);
  font: inherit;
}

.microcopy {
  margin: 10px 0 0;
  font-size: 0.94rem;
}

.installer-zone {
  min-height: 144px;
  display: grid;
  gap: 12px;
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.install-wrap {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.status-box {
  min-height: 48px;
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.035);
}

.status-box.good {
  border-color: rgba(156, 229, 109, 0.4);
  color: #d7ffc2;
}

.status-box.warn {
  border-color: rgba(255, 139, 115, 0.45);
  color: #ffd5cd;
}

.file-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.file-card {
  display: grid;
  gap: 7px;
  padding: 12px;
}

.file-card strong {
  font-size: 0.98rem;
}

.file-card span,
.file-card small {
  color: var(--muted);
  line-height: 1.45;
}

.file-card small {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  word-break: break-all;
}

.empty-state {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 14px;
}

details.keypad-details {
  margin-top: 16px;
}

details.keypad-details summary {
  cursor: pointer;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
}

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

.summary-pill {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.keypad-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

@media (max-width: 980px) {
  .hero,
  .device-hero,
  .split,
  .firmware-layout,
  .keypad-body {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: stretch;
    flex-direction: column;
  }

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

  .site-nav a {
    flex: 1 1 auto;
  }

  .hero,
  .section {
    padding: 20px;
  }

  .hero {
    min-height: auto;
  }

  .device-grid,
  .check-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .button,
  .download-button,
  .install-button {
    width: 100%;
  }

  .summary-row {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* Remote Console */
.software-promo,
.source-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background:
    linear-gradient(105deg, rgba(67, 220, 232, 0.11), transparent 44%),
    linear-gradient(180deg, rgba(23, 29, 38, 0.94), rgba(14, 18, 24, 0.94));
}

.software-promo p:not(.kicker) { max-width: 65ch; color: var(--muted); line-height: 1.62; }
.software-promo-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; flex: 0 0 auto; }
.remote-console-hero h1 { max-width: 10ch; font-size: clamp(3rem, 7vw, 6.7rem); }

.console-preview {
  align-self: stretch;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid #3c3058;
  border-radius: var(--radius);
  background: #160b2a;
  box-shadow: 0 34px 80px rgba(0, 0, 0, .42);
  transform: perspective(1000px) rotateY(-3deg) rotateX(1deg);
}

.console-preview-bar { min-height: 44px; display: flex; align-items: center; gap: 7px; padding: 0 14px; border-bottom: 1px solid #493366; background: #24123f; color: #b9a8ca; font-size: .74rem; }
.console-preview-bar i { width: 8px; height: 8px; border-radius: 50%; background: #ff4f86; }
.console-preview-bar i:nth-child(2) { background: #ffd06a; }
.console-preview-bar i:nth-child(3) { background: #9ce56d; }
.console-preview-bar span { margin-left: 7px; }
.console-preview-body { min-height: 316px; display: grid; grid-template-columns: 92px 1fr; }
.console-preview-nav { display: grid; align-content: start; gap: 16px; padding: 26px 14px; border-right: 1px solid #432b60; background: #201139; }
.console-preview-nav b { height: 9px; border-radius: 999px; background: #59416e; }
.console-preview-nav b.active { background: #ff3d79; box-shadow: 0 0 16px rgba(255, 61, 121, .45); }
.console-preview-content { display: grid; align-content: start; gap: 12px; padding: 28px; }
.console-preview-content small { color: #ff5b8d; font-size: .62rem; letter-spacing: .12em; }
.console-preview-content strong { margin-bottom: 10px; font-size: 1.25rem; }
.console-preview-content span { height: 43px; border: 1px solid #563773; border-radius: 7px; background: linear-gradient(90deg, #342050, #291743); }

.download-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.download-card { min-height: 260px; display: flex; flex-direction: column; align-items: flex-start; gap: 12px; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, .035); }
.download-card.featured { border-color: rgba(67, 220, 232, .48); background: linear-gradient(145deg, rgba(67, 220, 232, .09), rgba(255, 255, 255, .025)); }
.download-card p { flex: 1; margin: 0; color: var(--muted); line-height: 1.55; }
.download-card .button { width: 100%; }
.platform-badge { display: inline-flex; padding: 6px 9px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--cyan); font-size: .72rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.remote-steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.source-strip h2 { font-size: clamp(1.8rem, 3vw, 3rem); }
.source-strip .button { flex: 0 0 auto; }

@media (max-width: 980px) {
  .software-promo, .source-strip { align-items: flex-start; flex-direction: column; }
  .software-promo-actions { justify-content: flex-start; }
  .download-grid, .remote-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .console-preview { min-height: 300px; transform: none; }
}

@media (max-width: 720px) {
  .download-grid, .remote-steps { grid-template-columns: 1fr; }
  .software-promo-actions, .software-promo-actions .button, .source-strip .button { width: 100%; }
  .console-preview-body { grid-template-columns: 64px 1fr; }
  .console-preview-content { padding: 20px 14px; }
}