/*
 * Secreto Hub — Phase 1
 * A lightweight, mobile-first landing page with no external dependencies.
 */

:root {
  color-scheme: dark;
  --color-bg: #050811;
  --color-bg-deep: #03050b;
  --color-surface: #0b1425;
  --color-surface-strong: #101b2c;
  --color-surface-soft: #0a1220;
  --color-border: rgba(112, 171, 255, 0.18);
  --color-border-strong: rgba(61, 139, 255, 0.48);
  --color-primary: #3d8bff;
  --color-primary-light: #70abff;
  --color-accent: #52dcad;
  --color-text: #f7f9ff;
  --color-text-muted: #a8b3cc;
  --color-text-subtle: #7e8aa5;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.35);
  --shadow-blue: 0 18px 60px rgba(26, 104, 255, 0.2);
  --radius-sm: 0.75rem;
  --radius-md: 1.125rem;
  --radius-lg: 1.75rem;
  --container: 74rem;
  --header-height: 5rem;
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% -12%, rgba(61, 139, 255, 0.1), transparent 34rem),
    var(--color-bg);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

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

:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 4px;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 1rem;
  left: 1rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-text);
  color: var(--color-bg);
  font-weight: 800;
  transform: translateY(-200%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header and navigation */
.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  min-height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(5, 8, 17, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(5, 8, 17, 0.9);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.16);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  width: max-content;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid rgba(112, 171, 255, 0.16);
  border-radius: 0.8rem;
  background: linear-gradient(145deg, rgba(61, 139, 255, 0.14), rgba(61, 139, 255, 0.03));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 780;
  letter-spacing: -0.02em;
}

.nav-toggle {
  display: none;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 0.8rem;
  background: var(--color-surface-soft);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  margin: 4px auto;
  border-radius: 1rem;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  padding: 0.55rem 0.85rem;
  border-radius: 0.7rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 650;
  transition: color var(--transition), background var(--transition);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(61, 139, 255, 0.09);
  color: var(--color-text);
}

/* Hero */
.hero {
  position: relative;
  display: grid;
  overflow: hidden;
  overflow: clip;
  min-height: 100svh;
  padding: calc(var(--header-height) + 4rem) 0 5rem;
  place-items: center;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image: linear-gradient(rgba(112, 171, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(112, 171, 255, 0.025) 1px, transparent 1px);
  background-size: 4rem 4rem;
  content: "";
  mask-image: linear-gradient(to bottom, black 5%, transparent 80%);
}

.hero-glow {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-glow-one {
  top: 18%;
  right: -10rem;
  width: 32rem;
  height: 32rem;
  background: radial-gradient(circle, rgba(61, 139, 255, 0.16), transparent 67%);
}

.hero-glow-two {
  bottom: -10rem;
  left: -12rem;
  width: 32rem;
  height: 32rem;
  background: radial-gradient(circle, rgba(38, 100, 210, 0.1), transparent 68%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(31rem, 1.08fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.hero-copy {
  max-width: 37rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.35rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(82, 220, 173, 0.16);
  border-radius: 999px;
  background: rgba(82, 220, 173, 0.06);
  color: #8ceacb;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 0.28rem rgba(82, 220, 173, 0.1), 0 0 1rem rgba(82, 220, 173, 0.4);
}

h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(3.35rem, 6.5vw, 6.25rem);
  font-weight: 820;
  letter-spacing: -0.065em;
  line-height: 0.96;
}

h1 span {
  display: block;
  background: linear-gradient(110deg, var(--color-primary-light), var(--color-primary) 55%, #a6cbff);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-description {
  max-width: 35rem;
  margin: 1.65rem 0 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.76rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.9rem;
  font-size: 0.92rem;
  font-weight: 760;
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, #2b70d6, #1f5fbf);
  box-shadow: 0 12px 32px rgba(61, 139, 255, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.button-primary:hover {
  box-shadow: 0 16px 38px rgba(61, 139, 255, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.button-secondary {
  border-color: var(--color-border);
  background: rgba(16, 27, 44, 0.66);
  color: var(--color-text-muted);
}

.button-secondary:hover {
  border-color: var(--color-border-strong);
  background: var(--color-surface-strong);
  color: var(--color-text);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 1.25rem 0 0;
  color: var(--color-text-subtle);
  font-size: 0.82rem;
}

.hero-note span {
  display: grid;
  width: 1.25rem;
  height: 1.25rem;
  place-items: center;
  border-radius: 50%;
  background: rgba(82, 220, 173, 0.1);
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 900;
}

/* Product visual contained entirely within the hero. */
.product-preview {
  position: relative;
  overflow: hidden;
  padding: clamp(1rem, 2vw, 1.4rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(16, 27, 44, 0.96), rgba(7, 14, 26, 0.98));
  box-shadow: var(--shadow-soft), var(--shadow-blue), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.product-preview::before {
  position: absolute;
  top: -11rem;
  left: 28%;
  width: 25rem;
  height: 25rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 139, 255, 0.16), transparent 68%);
  content: "";
  pointer-events: none;
}

.preview-topbar,
.preview-footer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.preview-topbar {
  padding: 0.15rem 0.25rem 1rem;
  border-bottom: 1px solid rgba(112, 171, 255, 0.11);
}

.preview-brand,
.receiver-status,
.preview-footer span {
  display: flex;
  align-items: center;
}

.preview-brand {
  gap: 0.55rem;
  font-size: 0.85rem;
  font-weight: 760;
}

.receiver-status {
  gap: 0.45rem;
  color: #8ceacb;
  font-size: 0.72rem;
  font-weight: 750;
}

.receiver-status i,
.preview-footer i {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0.75rem rgba(82, 220, 173, 0.5);
}

.device-stage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 7rem minmax(0, 1fr);
  align-items: center;
  min-height: 22.5rem;
  padding: 2.2rem 0.25rem;
}

.device-card {
  position: relative;
  z-index: 2;
  padding: 0.75rem;
  border: 1px solid rgba(112, 171, 255, 0.16);
  border-radius: 1.35rem;
  background: rgba(10, 18, 32, 0.9);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.receiver-card {
  transform: translateY(-0.65rem);
}

.device-label {
  display: block;
  margin: 0.1rem 0 0.55rem;
  color: var(--color-text-subtle);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.device-screen {
  min-height: 10.5rem;
  overflow: hidden;
  border: 1px solid rgba(112, 171, 255, 0.11);
  border-radius: 0.9rem;
  background: #07101e;
}

.browser-bar {
  display: flex;
  gap: 0.28rem;
  padding: 0.55rem;
  border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  background: #0d192b;
}

.browser-bar i {
  width: 0.32rem;
  height: 0.32rem;
  border-radius: 50%;
  background: #40506a;
}

.file-chip {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 2.3rem 0.7rem;
  padding: 0.75rem;
  border: 1px solid rgba(112, 171, 255, 0.14);
  border-radius: 0.8rem;
  background: #101c2e;
}

.file-chip span:last-child {
  min-width: 0;
}

.file-chip b,
.file-chip small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-chip b {
  font-size: 0.7rem;
}

.file-chip small {
  color: var(--color-text-subtle);
  font-size: 0.58rem;
}

.file-icon {
  position: relative;
  flex: 0 0 auto;
  width: 1.6rem;
  height: 1.9rem;
  border-radius: 0.25rem;
  background: #f7f9ff;
}

.file-icon::after {
  position: absolute;
  top: 0;
  right: 0;
  border-width: 0 0.5rem 0.5rem 0;
  border-style: solid;
  border-color: transparent #4a97ff transparent transparent;
  content: "";
}

.tv-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.tv-screen img {
  margin-bottom: 1.15rem;
  filter: drop-shadow(0 8px 16px rgba(61, 139, 255, 0.26));
}

.progress-track {
  width: 100%;
  height: 0.32rem;
  overflow: hidden;
  border-radius: 1rem;
  background: #16233a;
}

.progress-track span {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.tv-screen small {
  margin-top: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.62rem;
}

.device-name {
  display: block;
  margin-top: 0.6rem;
  color: var(--color-text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-align: center;
}

.transfer-path {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 7rem;
  place-items: center;
}

.path-line {
  position: absolute;
  top: 50%;
  right: -0.6rem;
  left: -0.6rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 139, 255, 0.8), transparent);
}

.path-pulse {
  position: absolute;
  top: calc(50% - 3px);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary-light);
  box-shadow: 0 0 1rem var(--color-primary);
  animation: transfer 2.2s ease-in-out infinite;
}

.path-lock {
  position: relative;
  z-index: 2;
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid rgba(82, 220, 173, 0.22);
  border-radius: 50%;
  background: #0d1f25;
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 900;
  box-shadow: 0 0 1.4rem rgba(82, 220, 173, 0.15);
}

.transfer-path small {
  position: absolute;
  top: calc(50% + 1.35rem);
  color: var(--color-text-subtle);
  font-size: 0.55rem;
  font-weight: 700;
  white-space: nowrap;
}

.preview-footer {
  padding: 0.85rem 0.25rem 0.15rem;
  border-top: 1px solid rgba(112, 171, 255, 0.11);
  color: var(--color-text-subtle);
  font-size: 0.64rem;
}

.preview-footer span {
  gap: 0.45rem;
}

.preview-footer strong {
  color: var(--color-text-muted);
  font-weight: 650;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(112, 171, 255, 0.1);
  background: var(--color-bg-deep);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  min-height: 10rem;
  padding-block: 2.25rem;
}

.footer-brand > span:last-child {
  display: flex;
  flex-direction: column;
}

.footer-brand small {
  color: var(--color-text-subtle);
  font-size: 0.68rem;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
}

.footer-nav a,
.copyright {
  color: var(--color-text-subtle);
  font-size: 0.78rem;
}

.footer-nav a {
  transition: color var(--transition);
}

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

.copyright {
  margin: 0;
  text-align: right;
}

@keyframes transfer {
  0%,
  100% {
    transform: translateX(-2.25rem);
    opacity: 0;
  }
  15%,
  85% {
    opacity: 1;
  }
  50% {
    transform: translateX(2.25rem);
  }
}

@media (max-width: 62rem) {
  .hero {
    padding-top: calc(var(--header-height) + 3rem);
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .hero-copy {
    max-width: 44rem;
    text-align: center;
    justify-self: center;
  }

  h1 {
    max-width: 12ch;
  }

  .hero-description {
    margin-inline: auto;
  }

  .hero-actions,
  .hero-note {
    justify-content: center;
  }

  .product-preview {
    width: min(100%, 42rem);
    justify-self: center;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
  }

  .copyright {
    grid-column: 1 / -1;
    text-align: center;
  }
}

@media (max-width: 46rem) {
  :root {
    --header-height: 4.5rem;
  }

  .container {
    width: min(calc(100% - 1.35rem), var(--container));
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.55rem);
    right: 0;
    left: 0;
    display: grid;
    gap: 0.25rem;
    padding: 0.55rem;
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    background: var(--color-surface-soft);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.5rem) scale(0.98);
    transform-origin: top;
    transition: opacity var(--transition), transform var(--transition);
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .site-nav a {
    padding: 0.75rem;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + 3rem) 0 4rem;
  }

  .hero-grid {
    gap: 3rem;
  }

  h1 {
    font-size: clamp(3rem, 14vw, 4.6rem);
  }

  .hero-description {
    font-size: 1rem;
  }

  .device-stage {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 1.5rem 0;
  }

  .device-card {
    width: min(100%, 16rem);
  }

  .sender-card {
    justify-self: start;
  }

  .receiver-card {
    justify-self: end;
    transform: none;
  }

  .transfer-path {
    min-height: 5.5rem;
  }

  .path-line {
    top: -0.5rem;
    right: 50%;
    bottom: -0.5rem;
    left: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(transparent, rgba(61, 139, 255, 0.8), transparent);
  }

  .path-pulse {
    top: 0;
    animation-name: transfer-mobile;
  }

  .transfer-path small {
    top: calc(50% + 1.25rem);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .copyright {
    grid-column: auto;
  }
}

@media (max-width: 30rem) {
  .brand-name {
    font-size: 0.95rem;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 18rem);
    justify-content: center;
  }

  .button {
    width: 100%;
  }

  .product-preview {
    padding: 0.85rem;
    border-radius: 1.35rem;
  }

  .preview-topbar {
    align-items: flex-start;
  }

  .receiver-status {
    max-width: 5.5rem;
    justify-content: flex-end;
    text-align: right;
  }

  .preview-footer strong {
    max-width: 9.5rem;
    text-align: right;
  }

  .footer-nav {
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-inner {
    gap: 1.5rem;
  }
}

@keyframes transfer-mobile {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0;
  }
  15%,
  85% {
    opacity: 1;
  }
  50% {
    transform: translateY(4rem);
  }
}


/* v1.1 visual media polish: preserve complete product screenshots */
.gallery-item:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 4px;
}

.demo-device,
.step-card,
.gallery-item {
  isolation: isolate;
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --color-border: rgba(112, 171, 255, 0.45);
    --color-text-muted: #c7d0e4;
    --color-text-subtle: #aeb9d0;
  }
}

/* --------------------------------------------------------------------------
 * Phase 2 — product sections and shared interior-page components
 * ----------------------------------------------------------------------- */

.section {
  position: relative;
  padding: clamp(5rem, 8vw, 8rem) 0;
}

.section-contrast {
  border-block: 1px solid rgba(112, 171, 255, 0.09);
  background:
    radial-gradient(circle at 50% 0, rgba(61, 139, 255, 0.08), transparent 30rem),
    rgba(3, 5, 11, 0.6);
}

.section-heading {
  max-width: 43rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-heading-centered {
  margin-inline: auto;
  text-align: center;
}

.section-kicker,
.comparison-label {
  margin: 0 0 0.8rem;
  color: #8ceacb;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section h2,
.page-hero h1,
.not-found h1 {
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.5rem);
  font-weight: 820;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.section-heading > p:not(.section-kicker),
.privacy-copy > p:not(.section-kicker),
.status-card > div > p:not(.status-badge),
.page-hero p,
.not-found p {
  margin: 1.2rem 0 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.75;
}

.section-note {
  max-width: 58rem;
  margin: 2rem auto 0;
  color: var(--color-text-subtle);
  font-size: 0.82rem;
  line-height: 1.7;
  text-align: center;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: var(--color-primary-light);
  font-weight: 750;
  transition: color var(--transition), gap var(--transition);
}

.text-link:hover {
  gap: 0.72rem;
  color: var(--color-text);
}

/* Trust highlights */
.trust-strip {
  border-block: 1px solid rgba(112, 171, 255, 0.1);
  background: rgba(3, 5, 11, 0.72);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: 7.25rem;
  align-items: center;
}

.trust-grid > div {
  display: flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1rem;
  border-right: 1px solid rgba(112, 171, 255, 0.1);
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.trust-grid > div:last-child {
  border-right: 0;
}

.trust-grid span {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border-radius: 50%;
  background: rgba(61, 139, 255, 0.09);
  color: var(--color-primary-light);
  font-size: 0.72rem;
}

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.comparison-card,
.scenario-card,
.device-test-grid article {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(16, 27, 44, 0.86), rgba(7, 14, 26, 0.92));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.feature-card {
  min-height: 14.5rem;
  padding: clamp(1.35rem, 3vw, 2rem);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transform: translateY(-4px);
}

.card-number {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid rgba(61, 139, 255, 0.2);
  border-radius: 0.7rem;
  background: rgba(61, 139, 255, 0.08);
  color: var(--color-primary-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  font-weight: 800;
}

.feature-card h3,
.comparison-card h3,
.step-card h3,
.device-test-grid h3,
.content-card h2,
.content-card h3 {
  margin: 1.6rem 0 0;
  color: var(--color-text);
  font-size: 1.18rem;
  letter-spacing: -0.025em;
}

.feature-card p,
.comparison-card li,
.step-card p,
.device-test-grid p,
.scenario-grid li {
  color: var(--color-text-muted);
}

.feature-card p,
.step-card p,
.device-test-grid p {
  margin: 0.6rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Product comparison */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  max-width: 61rem;
  margin-inline: auto;
}

.comparison-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.75rem, 4vw, 3rem);
}

.comparison-card::before {
  position: absolute;
  top: -8rem;
  right: -8rem;
  width: 17rem;
  height: 17rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 139, 255, 0.12), transparent 68%);
  content: "";
}

.comparison-traditional {
  opacity: 0.78;
}

.comparison-secreto {
  border-color: rgba(61, 139, 255, 0.45);
  box-shadow: var(--shadow-blue), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.comparison-card h3 {
  margin-top: 0;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

.check-list {
  display: grid;
  gap: 0.8rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.65rem;
}

.check-list li::before {
  position: absolute;
  top: 0.25rem;
  left: 0;
  display: grid;
  width: 1rem;
  height: 1rem;
  place-items: center;
  border-radius: 50%;
  background: rgba(82, 220, 173, 0.1);
  color: var(--color-accent);
  content: "✓";
  font-size: 0.6rem;
  font-weight: 900;
}

.muted-list li::before {
  background: rgba(126, 138, 165, 0.1);
  color: var(--color-text-subtle);
  content: "–";
}

/* Real browser-to-TV demonstration */
.real-demo {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) 7rem minmax(0, 0.92fr);
  align-items: center;
}

.demo-device {
  position: relative;
  z-index: 2;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.demo-device figcaption {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  color: var(--color-text-muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.demo-device figcaption span {
  color: var(--color-primary-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.demo-device img {
  display: block;
  width: 100%;
  height: clamp(24rem, 34vw, 34rem);
  padding: clamp(0.55rem, 1.2vw, 0.9rem);
  object-fit: contain;
  object-position: center;
  background:
    radial-gradient(circle at 50% 46%, rgba(61, 139, 255, 0.09), transparent 54%),
    #02050c;
}

.demo-browser {
  transform: rotate(-1deg);
}

.demo-tv {
  transform: rotate(1deg);
}

.demo-connection {
  position: relative;
  z-index: 3;
  display: grid;
  min-height: 8rem;
  place-items: center;
}

.demo-line {
  position: absolute;
  right: -1rem;
  left: -1rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.demo-connection i {
  position: relative;
  z-index: 2;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  border: 1px solid rgba(82, 220, 173, 0.25);
  border-radius: 50%;
  background: #0b1820;
  color: #8ceacb;
  font-size: 0.65rem;
  font-style: normal;
  font-weight: 800;
  box-shadow: 0 0 2rem rgba(82, 220, 173, 0.14);
}

.demo-packet {
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-primary-light);
  box-shadow: 0 0 1rem var(--color-primary);
  animation: demo-transfer 2.8s ease-in-out infinite;
}

@keyframes demo-transfer {
  0%, 100% { opacity: 0; transform: translateX(-3rem); }
  15%, 85% { opacity: 1; }
  50% { transform: translateX(3rem); }
}

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-card {
  overflow: hidden;
  padding-bottom: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(10, 18, 32, 0.78);
}

.step-image {
  display: grid;
  min-height: clamp(12rem, 18vw, 16rem);
  margin-bottom: 1.4rem;
  padding: 0.65rem;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(61, 139, 255, 0.05), transparent 55%),
    var(--color-bg-deep);
}

.step-image img {
  display: block;
  width: 100%;
  height: clamp(11rem, 17vw, 15rem);
  object-fit: contain;
  object-position: center;
}

.step-card > span,
.step-card > h3,
.step-card > p {
  margin-inline: 1.25rem;
}

.step-card > span {
  color: var(--color-primary-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.step-card h3 {
  margin-top: 0.45rem;
}

/* Screenshot gallery and lightbox */
.gallery-section {
  overflow: hidden;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}

.gallery-item {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: zoom-in;
  text-align: left;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.18);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28), 0 0 2rem rgba(61, 139, 255, 0.08);
  transform: translateY(-3px);
}

.gallery-item img {
  display: block;
  width: 100%;
  height: clamp(18rem, 30vw, 27rem);
  padding: clamp(0.5rem, 1vw, 0.8rem);
  object-fit: contain;
  object-position: center;
  background:
    radial-gradient(circle at 50% 45%, rgba(61, 139, 255, 0.1), transparent 58%),
    #02050b;
  transition: transform 500ms ease, filter 500ms ease;
}

.gallery-item:hover img {
  filter: brightness(1.04);
  transform: scale(1.008);
}

.gallery-item > span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.4rem;
  padding: 0.95rem 1.05rem;
  border-top: 1px solid rgba(112, 171, 255, 0.1);
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 760;
}

.gallery-item i {
  color: var(--color-primary-light);
  font-style: normal;
}

.gallery-wide {
  grid-column: span 2;
}

.gallery-wide img {
  height: clamp(22rem, 38vw, 34rem);
}

.gallery-tall img {
  height: clamp(22rem, 36vw, 32rem);
}

.lightbox {
  width: min(calc(100% - 2rem), 75rem);
  max-width: none;
  max-height: calc(100dvh - 2rem);
  padding: 0;
  overflow: visible;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: #070d18;
  color: var(--color-text);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.7);
}

.lightbox::backdrop {
  background: rgba(0, 2, 8, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.lightbox-panel {
  position: relative;
  padding: clamp(0.75rem, 2vw, 1.25rem);
}

.lightbox figure {
  margin: 0;
}

.lightbox figure img {
  width: 100%;
  max-height: calc(100dvh - 9.5rem);
  border-radius: 1rem;
  object-fit: contain;
  background: #02040a;
}

.lightbox figcaption {
  padding: 0.8rem 0.25rem 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.lightbox-close {
  position: absolute;
  z-index: 2;
  top: -1rem;
  right: -1rem;
  display: grid;
  width: 3rem;
  height: 3rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  background: #101b2c;
  color: var(--color-text);
  cursor: pointer;
  font-size: 1.7rem;
  line-height: 1;
}

.lightbox-controls {
  position: absolute;
  right: 1.25rem;
  bottom: 0.9rem;
  display: flex;
  gap: 0.5rem;
}

.lightbox-controls button {
  min-height: 2.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0.65rem;
  background: var(--color-surface-strong);
  color: var(--color-text-muted);
  cursor: pointer;
  font-weight: 700;
}

body.lightbox-open {
  overflow: hidden;
}

/* Testing, privacy, and compatibility */
.testing-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1.1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
}

.testing-layout .section-heading {
  margin-bottom: 0;
}

.version-row,
.platform-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.version-row span,
.platform-row span {
  padding: 0.5rem 0.72rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(61, 139, 255, 0.06);
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 750;
}

.scenario-card {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 1.3rem 0 0;
  padding: 0;
  list-style: none;
}

.scenario-grid li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.83rem;
}

.scenario-grid li::before {
  position: absolute;
  top: 0.55rem;
  left: 0;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
  box-shadow: 0 0 0.75rem rgba(82, 220, 173, 0.35);
}

.testing-note {
  grid-column: 1 / -1;
}

.privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(24rem, 1.1fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
}

.privacy-copy h2 {
  max-width: 10ch;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.privacy-grid li {
  display: flex;
  min-height: 4rem;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.9rem;
  background: rgba(10, 18, 32, 0.68);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 680;
}

.privacy-grid span {
  color: var(--color-accent);
}

.platform-row {
  justify-content: center;
  margin-top: -1.75rem;
  margin-bottom: 2rem;
}

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

.device-test-grid article {
  padding: 1.5rem;
}

.device-test-grid article > span {
  color: var(--color-primary-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7rem;
  font-weight: 800;
}

.device-test-grid h3 {
  margin-top: 0.8rem;
}

/* FAQs */
.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(26rem, 1.28fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.faq-layout .section-heading {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  margin-bottom: 0;
}

.faq-list {
  border-top: 1px solid var(--color-border);
}

.faq-list details {
  border-bottom: 1px solid var(--color-border);
}

.faq-list summary {
  position: relative;
  padding: 1.35rem 3rem 1.35rem 0;
  color: var(--color-text);
  cursor: pointer;
  font-weight: 730;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 1.25rem;
  right: 0;
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-primary-light);
  content: "+";
  transition: transform var(--transition), background var(--transition);
}

.faq-list details[open] summary::after {
  background: rgba(61, 139, 255, 0.08);
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 50rem;
  margin: -0.3rem 3rem 1.4rem 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* Development status, video, and attribution */
.status-section {
  padding-top: 2rem;
}

.status-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  overflow: hidden;
  padding: clamp(2rem, 6vw, 4rem);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 80% 20%, rgba(61, 139, 255, 0.15), transparent 18rem),
    linear-gradient(145deg, #101b2c, #08101d);
  box-shadow: var(--shadow-blue);
}

.status-card h2 {
  max-width: 16ch;
  font-size: clamp(2rem, 4.5vw, 3.7rem);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  color: #8ceacb;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-badge span {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 1rem rgba(82, 220, 173, 0.55);
}

.status-action {
  display: grid;
  max-width: 14rem;
  gap: 0.75rem;
  text-align: center;
}

.status-action small {
  color: var(--color-text-subtle);
  font-size: 0.68rem;
  line-height: 1.5;
}

.video-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(24rem, 1.18fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
}

.video-layout .section-heading {
  margin-bottom: 0;
}

.video-placeholder {
  position: relative;
  display: grid;
  min-height: 22rem;
  place-items: center;
  align-content: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(61, 139, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 139, 255, 0.035) 1px, transparent 1px),
    radial-gradient(circle at center, rgba(61, 139, 255, 0.12), transparent 50%),
    var(--color-surface-soft);
  background-size: 3rem 3rem, 3rem 3rem, auto, auto;
  box-shadow: var(--shadow-soft);
}

.video-placeholder strong,
.video-placeholder small {
  display: block;
}

.video-placeholder strong {
  margin-top: 1.25rem;
  font-size: 1rem;
}

.video-placeholder small {
  margin-top: 0.35rem;
  color: var(--color-text-subtle);
}

.play-mark {
  display: grid;
  width: 4.5rem;
  height: 4.5rem;
  padding-left: 0.2rem;
  place-items: center;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  background: rgba(61, 139, 255, 0.12);
  color: var(--color-primary-light);
  box-shadow: 0 0 2rem rgba(61, 139, 255, 0.2);
}

.developer-section {
  padding-top: 1rem;
}

.developer-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2.25rem;
  border-top: 1px solid rgba(112, 171, 255, 0.1);
  text-align: left;
}

.developer-card img {
  flex: 0 0 auto;
  filter: drop-shadow(0 10px 24px rgba(61, 139, 255, 0.22));
}

.developer-card h2 {
  font-size: clamp(1.5rem, 3vw, 2.3rem);
}

.developer-card p:last-child {
  margin: 0.45rem 0 0;
  color: var(--color-text-muted);
}

.developer-card a,
.copyright a {
  color: var(--color-primary-light);
}

.footer-nav-expanded {
  flex-wrap: wrap;
  justify-content: center;
}

/* Interior pages */
.page-main {
  min-height: calc(100svh - 10rem);
  padding-top: var(--header-height);
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 10vw, 8.5rem) 0 clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  background:
    linear-gradient(rgba(112, 171, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(112, 171, 255, 0.025) 1px, transparent 1px),
    radial-gradient(circle at 50% 0, rgba(61, 139, 255, 0.13), transparent 32rem);
  background-size: 4rem 4rem, 4rem 4rem, auto;
}

.page-hero .container {
  max-width: 58rem;
}

.page-hero .eyebrow {
  margin-bottom: 1.4rem;
}

.page-hero h1 {
  max-width: 14ch;
}

.page-content {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.content-layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 47rem);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: start;
  justify-content: center;
}

.page-toc {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(10, 18, 32, 0.7);
}

.page-toc strong {
  padding: 0.35rem 0.5rem;
  color: var(--color-text-subtle);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-toc a {
  padding: 0.45rem 0.5rem;
  border-radius: 0.55rem;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  transition: background var(--transition), color var(--transition);
}

.page-toc a:hover {
  background: rgba(61, 139, 255, 0.08);
  color: var(--color-text);
}

.content-card {
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
  padding: 0 0 2.5rem;
  border-bottom: 1px solid rgba(112, 171, 255, 0.12);
}

.content-card + .content-card {
  padding-top: 2.5rem;
}

.content-card:last-child {
  border-bottom: 0;
}

.content-card h2 {
  margin-top: 0;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
}

.content-card h3 {
  font-size: 1.05rem;
}

.content-card p,
.content-card li {
  color: var(--color-text-muted);
  line-height: 1.8;
}

.content-card ul,
.content-card ol {
  display: grid;
  gap: 0.65rem;
  padding-left: 1.25rem;
}

.content-card a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.content-callout {
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(82, 220, 173, 0.18);
  border-radius: 0.85rem;
  background: rgba(82, 220, 173, 0.045);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.page-faq {
  max-width: 52rem;
  margin-inline: auto;
}

.changelog-entry {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(16, 27, 44, 0.88), rgba(7, 14, 26, 0.94));
}

.changelog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.5rem;
}

.changelog-meta span {
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-subtle);
  font-size: 0.7rem;
}

.not-found {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  padding: 5rem 0;
  place-items: center;
  text-align: center;
}

.not-found-inner {
  max-width: 38rem;
}

.not-found img {
  width: 7rem;
  margin: 0 auto 2rem;
  filter: drop-shadow(0 18px 35px rgba(61, 139, 255, 0.26));
}

.not-found-code {
  margin: 0 0 0.75rem;
  color: var(--color-primary-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.not-found .button {
  margin-top: 1.7rem;
}

@media (max-width: 64rem) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .gallery-wide {
    grid-column: span 2;
  }

  .testing-layout,
  .privacy-layout,
  .video-layout {
    grid-template-columns: 1fr;
  }

  .testing-layout .section-heading,
  .video-layout .section-heading {
    max-width: 46rem;
  }

  .privacy-copy h2 {
    max-width: 15ch;
  }
}

@media (max-width: 52rem) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-grid > div:nth-child(2) {
    border-right: 0;
  }

  .trust-grid > div:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  }

  .real-demo {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .demo-browser,
  .demo-tv {
    transform: none;
  }

  .demo-connection {
    min-height: 6.5rem;
  }

  .demo-line {
    top: -0.5rem;
    right: 50%;
    bottom: -0.5rem;
    left: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(transparent, var(--color-primary), transparent);
  }

  .demo-packet {
    animation-name: demo-transfer-mobile;
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .faq-layout .section-heading {
    position: static;
  }

  .status-card {
    grid-template-columns: 1fr;
  }

  .status-action {
    max-width: 18rem;
    text-align: left;
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .page-toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-toc strong {
    grid-column: 1 / -1;
  }
}

@keyframes demo-transfer-mobile {
  0%, 100% { opacity: 0; transform: translateY(-2.5rem); }
  15%, 85% { opacity: 1; }
  50% { transform: translateY(2.5rem); }
}

@media (max-width: 46rem) {
  .section {
    padding: 4.75rem 0;
  }

  .site-nav {
    max-height: calc(100dvh - var(--header-height) - 1rem);
    overflow-y: auto;
  }

  .comparison-grid,
  .feature-grid,
  .steps-grid,
  .gallery-grid,
  .device-test-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: auto;
  }

  .gallery-wide {
    grid-column: span 1;
  }

  .gallery-item img,
  .gallery-wide img,
  .gallery-tall img {
    height: auto;
    aspect-ratio: 16 / 10;
    padding: 0.4rem;
  }

  .demo-device img {
    height: auto;
    max-height: 32rem;
    aspect-ratio: 16 / 10;
  }

  .step-image,
  .step-image img {
    min-height: 0;
    height: auto;
  }

  .step-image img {
    aspect-ratio: 16 / 10;
  }

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

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

  .platform-row {
    margin-top: -1rem;
  }

  .developer-card {
    flex-direction: column;
    text-align: center;
  }

  .lightbox {
    width: calc(100% - 1rem);
    max-height: calc(100dvh - 1rem);
  }

  .lightbox-panel {
    padding: 0.5rem 0.5rem 4.25rem;
  }

  .lightbox figure img {
    max-height: calc(100dvh - 10rem);
  }

  .lightbox-close {
    top: 0.8rem;
    right: 0.8rem;
  }

  .lightbox figcaption {
    padding-inline: 0.5rem;
  }

  .lightbox-controls {
    right: 0.75rem;
    bottom: 0.7rem;
    left: 0.75rem;
    justify-content: space-between;
  }

  .page-toc {
    grid-template-columns: 1fr;
  }

  .page-toc strong {
    grid-column: auto;
  }
}

@media (max-width: 30rem) {
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .trust-grid > div {
    justify-content: flex-start;
    border-right: 0;
    border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  }

  .trust-grid > div:nth-child(2) {
    border-bottom: 1px solid rgba(112, 171, 255, 0.1);
  }

  .trust-grid > div:last-child {
    border-bottom: 0;
  }

  .comparison-card,
  .scenario-card {
    padding: 1.35rem;
  }

  .status-card {
    width: calc(100% - 1.35rem);
  }

  .footer-nav-expanded {
    display: grid;
    grid-template-columns: repeat(2, auto);
  }
}

@media (prefers-reduced-motion: reduce) {
  .demo-packet {
    display: none;
  }

  .gallery-item img {
    transition: none;
  }
}