:root {
  color: #eefbf8;
  background: #03070c;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
  --bg: #03070c;
  --bg-soft: #071118;
  --surface: rgba(11, 18, 28, 0.74);
  --surface-strong: rgba(14, 24, 37, 0.9);
  --surface-soft: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.075);
  --line-strong: rgba(124, 255, 223, 0.2);
  --text: #eefbf8;
  --muted: #98abb8;
  --subtle: #667987;
  --accent: #20c7b4;
  --accent-2: #7df4a8;
  --accent-3: #6be4ff;
  --danger: #f87171;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --mx: 0;
  --my: 0;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(120deg, rgba(32, 199, 180, 0.14), transparent 24rem) 0 0 / 100%
      48rem no-repeat,
    linear-gradient(210deg, rgba(107, 228, 255, 0.1), transparent 30rem) 100% 0 / 100%
      50rem no-repeat,
    radial-gradient(ellipse at 50% -12%, rgba(255, 255, 255, 0.06), transparent 34rem),
    linear-gradient(180deg, #071017 0%, #03070c 48%, #04070b 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 70%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 4%, rgba(32, 199, 180, 0.07) 24%, transparent 44%),
    linear-gradient(245deg, transparent 14%, rgba(125, 244, 168, 0.05) 36%, transparent 58%);
  opacity: 0.8;
}

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

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

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

.site-shell {
  width: min(1220px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 36px;
}

.nav-shell {
  position: sticky;
  top: 14px;
  z-index: 40;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 10px 12px;
  background: rgba(5, 11, 18, 0.76);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  box-shadow: 0 10px 24px rgba(32, 199, 180, 0.18);
}

.nav-links,
.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #aabcc8;
  font-size: 14px;
  font-weight: 750;
}

.nav-links a,
.footer-links a {
  border-radius: 12px;
  padding: 10px 12px;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.nav-links a:hover,
.footer-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
}

.nav-download,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 15px;
  padding: 0 18px;
  font-weight: 900;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.nav-download,
.btn-primary {
  color: #03110f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 18px 42px rgba(32, 199, 180, 0.18);
}

.btn-secondary {
  color: #e5f4ef;
  border-color: rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.055);
}

.nav-download:hover,
.btn:hover {
  transform: translateY(-2px);
}

.section {
  position: relative;
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent),
    rgba(7, 13, 22, 0.72);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.035),
    0 18px 58px rgba(0, 0, 0, 0.22);
}

.section-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

.section-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(440px, 1.08fr);
  gap: 36px;
  align-items: center;
  min-height: calc(100svh - 86px);
  margin-top: 14px;
  padding: 64px 0 56px;
  border: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

.hero-backdrop {
  position: absolute;
  inset: 18px -4vw 0;
  z-index: -1;
  border-radius: 42px;
  background:
    linear-gradient(125deg, rgba(32, 199, 180, 0.08), transparent 34%),
    linear-gradient(245deg, rgba(107, 228, 255, 0.07), transparent 42%),
    rgba(255, 255, 255, 0.012);
  mask-image: linear-gradient(180deg, black, rgba(0, 0, 0, 0.86), transparent);
}

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

.badge,
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(125, 244, 168, 0.18);
  border-radius: 999px;
  padding: 9px 12px;
  background: rgba(32, 199, 180, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(46px, 7.5vw, 92px);
  line-height: 0.93;
  letter-spacing: -0.06em;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(30px, 4.5vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.hero-subtitle,
.section-heading p,
.security-copy p,
.download p,
.web-cta p,
.feature-card p,
.mode-grid p,
.showcase-card p,
.intro-strip p,
.faq p,
.footer p {
  color: var(--muted);
  line-height: 1.68;
}

.hero-subtitle {
  max-width: 650px;
  margin-bottom: 30px;
  font-size: clamp(17px, 1.8vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.hero-actions .btn {
  min-height: 54px;
  padding-inline: 22px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.trust-row span {
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  padding: 8px 11px;
  color: #b4c6cf;
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
  font-weight: 800;
}

.hero-stage {
  min-width: 0;
  perspective: 1400px;
}

.product-orbit {
  position: relative;
  min-height: 560px;
  transform:
    rotateX(calc(var(--my) * -0.7deg + 7deg))
    rotateY(calc(var(--mx) * 0.9deg - 10deg));
  transform-style: preserve-3d;
  transition: transform 0.4s ease;
}

.app-preview {
  position: absolute;
  inset: 32px 0 30px;
  display: grid;
  grid-template-rows: 50px 1fr;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 30px;
  background:
    linear-gradient(130deg, rgba(32, 199, 180, 0.08), transparent 42%),
    linear-gradient(180deg, rgba(17, 29, 43, 0.94), rgba(5, 9, 15, 0.94));
  box-shadow:
    0 38px 120px rgba(0, 0, 0, 0.46),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  transform: translateZ(34px);
}

.app-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.025), transparent),
    repeating-linear-gradient(90deg, transparent 0 68px, rgba(255, 255, 255, 0.022) 69px 70px);
}

.preview-topbar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0 14px;
  background: rgba(8, 14, 22, 0.62);
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.preview-search {
  margin-left: auto;
  width: min(210px, 42%);
  border-radius: 999px;
  padding: 8px 12px;
  color: #718697;
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
}

.preview-body {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 54px 158px minmax(0, 1fr) 132px;
  gap: 8px;
  min-height: 0;
  padding: 10px;
}

.preview-rail,
.preview-list,
.preview-chat,
.preview-info {
  border: 1px solid rgba(255, 255, 255, 0.055);
  background: rgba(8, 14, 23, 0.68);
}

.preview-rail {
  display: grid;
  align-content: start;
  justify-items: center;
  gap: 12px;
  border-radius: 18px;
  padding: 12px 8px;
}

.preview-rail span {
  width: 34px;
  height: 34px;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.08);
}

.preview-rail .rail-logo {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 28px rgba(32, 199, 180, 0.24);
}

.preview-list,
.preview-chat,
.preview-info {
  border-radius: 20px;
  padding: 12px;
}

.list-title,
.list-search,
.chat-header-line,
.composer-line,
.profile-card,
.mini-card {
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.07);
}

.list-title {
  height: 32px;
  margin-bottom: 12px;
}

.list-search {
  height: 34px;
  margin-bottom: 10px;
  background: rgba(3, 7, 12, 0.55);
}

.dialog-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  border-radius: 15px;
  padding: 8px;
}

.dialog-row.active {
  background: rgba(32, 199, 180, 0.12);
}

.dialog-row > span,
.avatar {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: linear-gradient(135deg, #28d0bd, #8ff0ac);
}

.dialog-row div {
  flex: 1;
}

.dialog-row b,
.dialog-row i,
.bubble b,
.bubble i,
.bubble em {
  display: block;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.dialog-row b {
  width: 72%;
  margin-bottom: 7px;
}

.dialog-row i {
  width: 94%;
  opacity: 0.55;
}

.preview-chat {
  display: grid;
  grid-template-rows: 42px auto auto auto 1fr 44px;
  gap: 14px;
  min-width: 0;
}

.chat-header-line {
  height: 42px;
}

.message-line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.message-line.second {
  margin-left: 24px;
}

.avatar.alt {
  background: linear-gradient(135deg, #9b7cff, #28d0bd);
}

.bubble,
.voice-card {
  width: min(100%, 360px);
  border: 1px solid rgba(255, 255, 255, 0.065);
  border-radius: 18px;
  padding: 14px;
  background: rgba(18, 29, 44, 0.86);
}

.bubble.wide {
  width: min(100%, 430px);
}

.bubble b {
  width: 42%;
  margin-bottom: 10px;
  background: rgba(32, 199, 180, 0.55);
}

.bubble i {
  width: 92%;
  margin-bottom: 8px;
}

.bubble em {
  width: 62%;
  opacity: 0.55;
}

.voice-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(100%, 420px);
  margin-left: 44px;
}

.play {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 28px rgba(32, 199, 180, 0.2);
}

.wave {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 4px;
  height: 30px;
}

.wave span {
  width: 3px;
  height: 32%;
  border-radius: 999px;
  background: rgba(32, 199, 180, 0.78);
  animation: wave 1.6s ease-in-out infinite;
}

.wave span:nth-child(2n) {
  height: 62%;
  animation-delay: -0.3s;
}

.wave span:nth-child(3n) {
  height: 86%;
  animation-delay: -0.6s;
}

.wave span:nth-child(5n) {
  height: 44%;
  animation-delay: -0.9s;
}

.composer-line {
  align-self: end;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
}

.preview-info {
  display: grid;
  align-content: start;
  gap: 12px;
}

.profile-card {
  height: 136px;
  background:
    linear-gradient(135deg, rgba(32, 199, 180, 0.14), transparent),
    rgba(255, 255, 255, 0.07);
}

.mini-card {
  height: 86px;
}

.mini-card.short {
  height: 62px;
}

.floating-callout {
  position: absolute;
  z-index: 3;
  display: grid;
  gap: 4px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(11, 19, 30, 0.84);
  box-shadow: 0 20px 58px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(14px);
  transform: translateZ(74px);
}

.floating-callout strong {
  font-size: 14px;
}

.floating-callout span {
  color: var(--muted);
  font-size: 12px;
}

.callout-one {
  top: 9px;
  right: 28px;
}

.callout-two {
  left: 4px;
  bottom: 12px;
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
}

.intro-strip article,
.feature-card,
.mode-grid article,
.security-list article,
.showcase-card,
.download-card,
.faq details {
  border: 1px solid rgba(255, 255, 255, 0.065);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent),
    rgba(255, 255, 255, 0.045);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.intro-strip article {
  border-radius: 20px;
  padding: 20px;
}

.intro-strip span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 950;
}

.intro-strip strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.intro-strip p {
  margin: 0;
  font-size: 14px;
}

.features,
.modes,
.security,
.showcase,
.download,
.web-cta,
.faq {
  padding: clamp(24px, 4vw, 46px);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 26px;
}

.section-heading p {
  max-width: 720px;
  font-size: 16px;
}

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

.feature-card {
  min-height: 226px;
  border-radius: 20px;
  padding: 20px;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.feature-card:hover,
.mode-grid article:hover,
.showcase-card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 244, 168, 0.18);
  background:
    linear-gradient(180deg, rgba(32, 199, 180, 0.07), transparent),
    rgba(255, 255, 255, 0.05);
}

.icon-badge {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  margin-bottom: 22px;
  border: 1px solid rgba(125, 244, 168, 0.18);
  border-radius: 14px;
  padding: 0 10px;
  color: #bffbe8;
  background: rgba(32, 199, 180, 0.11);
  font-size: 12px;
  font-weight: 950;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.mode-grid article {
  min-height: 250px;
  border-radius: 20px;
  padding: 16px;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.mode-visual {
  position: relative;
  height: 96px;
  margin-bottom: 18px;
  border-radius: 18px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(32, 199, 180, 0.16), transparent),
    rgba(5, 10, 17, 0.78);
}

.mode-visual::before,
.mode-visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.mode-visual::before {
  width: 42px;
  height: 42px;
  left: 18px;
  top: 18px;
}

.mode-visual::after {
  width: 70px;
  height: 12px;
  left: 72px;
  top: 30px;
}

.mode-visual.teams::after {
  width: 98px;
}

.mode-visual.community::before {
  box-shadow:
    38px 10px 0 rgba(255, 255, 255, 0.08),
    18px 42px 0 rgba(255, 255, 255, 0.06);
}

.mode-visual.calls::after {
  height: 34px;
  background: repeating-linear-gradient(
    90deg,
    rgba(32, 199, 180, 0.72) 0 3px,
    transparent 3px 9px
  );
}

.mode-visual.files::before {
  border-radius: 12px;
}

.security {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 28px;
  align-items: center;
}

.security-copy p {
  max-width: 620px;
  font-size: 17px;
}

.security-list {
  display: grid;
  gap: 12px;
}

.security-list article {
  border-radius: 18px;
  padding: 18px;
}

.security-list strong,
.security-list span {
  display: block;
}

.security-list strong {
  margin-bottom: 7px;
}

.security-list span {
  color: var(--muted);
  line-height: 1.55;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 12px;
}

.showcase-card {
  border-radius: 22px;
  padding: 18px;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.showcase-card.large {
  grid-row: span 2;
}

.showcase-ui {
  display: grid;
  gap: 9px;
  align-content: center;
  min-height: 210px;
  margin-bottom: 18px;
  border-radius: 20px;
  padding: 18px;
  background:
    linear-gradient(135deg, rgba(32, 199, 180, 0.16), transparent),
    rgba(3, 7, 12, 0.72);
}

.showcase-card.large .showcase-ui {
  min-height: 360px;
}

.showcase-ui span {
  display: block;
  width: 78%;
  height: 42px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.09);
}

.showcase-ui span:nth-child(2) {
  width: 92%;
  margin-left: 26px;
  background: rgba(32, 199, 180, 0.13);
}

.showcase-ui span:nth-child(3) {
  width: 66%;
}

.download {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
  gap: 28px;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(32, 199, 180, 0.12), transparent 40%),
    rgba(7, 13, 22, 0.74);
}

.requirements {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.requirements li {
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  padding: 9px 12px;
  color: #c9d9d5;
  background: rgba(255, 255, 255, 0.045);
  font-size: 13px;
  font-weight: 800;
}

.download-card {
  display: grid;
  justify-items: stretch;
  gap: 12px;
  border-radius: 24px;
  padding: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent),
    rgba(10, 18, 29, 0.9);
}

.download-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  color: #03110f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-size: 28px;
  font-weight: 950;
}

.download-card strong {
  font-size: 22px;
}

.download-card span {
  color: var(--muted);
}

.download-card .btn {
  width: 100%;
}

.web-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background:
    linear-gradient(120deg, rgba(107, 228, 255, 0.08), transparent 44%),
    rgba(7, 13, 22, 0.72);
}

.web-cta p {
  margin-bottom: 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.faq details {
  border-radius: 18px;
  padding: 18px 20px;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq details p {
  margin: 12px 0 0;
}

.footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 22px;
  margin-top: 28px;
  padding: 28px 4px 0;
  color: var(--subtle);
}

.footer .brand {
  color: #fff;
}

.footer p {
  max-width: 410px;
  margin: 10px 0 0;
  font-size: 14px;
}

.copyright {
  white-space: nowrap;
}

@keyframes wave {
  0%,
  100% {
    transform: scaleY(0.45);
    opacity: 0.52;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .section-reveal {
    opacity: 1;
    transform: none;
  }

  .product-orbit {
    transform: none;
  }
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    max-width: 860px;
  }

  .product-orbit {
    min-height: 520px;
    transform: none;
  }

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

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

  .security,
  .download {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .nav-shell {
    grid-template-columns: auto auto;
  }

  .nav-links {
    grid-column: 1 / -1;
    order: 3;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-download {
    justify-self: end;
  }

  .preview-body {
    grid-template-columns: 52px 150px minmax(0, 1fr);
  }

  .preview-info {
    display: none;
  }

  .intro-strip,
  .showcase-grid,
  .faq-grid,
  .footer {
    grid-template-columns: 1fr;
  }

  .showcase-card.large {
    grid-row: auto;
  }

  .showcase-card.large .showcase-ui,
  .showcase-ui {
    min-height: 240px;
  }

  .web-cta {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(100% - 20px, 1220px);
    padding-top: calc(env(safe-area-inset-top) + 10px);
  }

  .nav-shell {
    position: static;
    border-radius: 18px;
    gap: 10px;
  }

  .brand {
    font-size: 16px;
  }

  .brand img {
    width: 32px;
    height: 32px;
    border-radius: 10px;
  }

  .nav-links {
    gap: 4px;
    font-size: 12px;
  }

  .nav-links a {
    padding: 8px 9px;
  }

  .nav-download {
    min-height: 40px;
    border-radius: 13px;
    padding-inline: 13px;
    font-size: 13px;
  }

  .hero {
    gap: 24px;
    padding: 42px 0 26px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 58px);
    letter-spacing: -0.055em;
  }

  h2 {
    font-size: clamp(30px, 10vw, 42px);
  }

  .badge {
    font-size: 10px;
    letter-spacing: 0.12em;
  }

  .hero-actions,
  .hero-actions .btn,
  .web-cta .btn {
    width: 100%;
  }

  .trust-row span {
    font-size: 11px;
  }

  .product-orbit {
    min-height: 430px;
  }

  .app-preview {
    inset: 24px 0 28px;
    border-radius: 24px;
  }

  .preview-body {
    grid-template-columns: 1fr;
    padding: 8px;
  }

  .preview-rail,
  .preview-list {
    display: none;
  }

  .preview-chat {
    min-height: 330px;
    border-radius: 18px;
  }

  .message-line.second,
  .voice-card {
    margin-left: 0;
  }

  .floating-callout {
    display: none;
  }

  .features,
  .modes,
  .security,
  .showcase,
  .download,
  .web-cta,
  .faq {
    border-radius: 22px;
    padding: 22px;
  }

  .feature-grid,
  .mode-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .mode-grid article {
    min-height: 0;
  }

  .showcase-card.large .showcase-ui,
  .showcase-ui {
    min-height: 190px;
  }

  .download-card {
    padding: 18px;
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
  }
}