:root {
  --black: #000;
  --black-2: #050505;
  --black-3: #0c0c0e;
  --white: #f5f5f7;
  --muted: #a1a1a6;
  --muted-2: #6e6e73;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.24);
  --blue: #0071e3;
  --blue-soft: rgba(0, 113, 227, 0.22);
  --max: 1180px;
  --font: "Avenir Next", "SF Pro Display", "PingFang SC", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

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

button {
  font: inherit;
}

.intro {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  gap: 18px;
  align-content: center;
  background: #000;
  color: var(--white);
  transition: opacity 720ms ease, visibility 720ms ease;
}

.intro span {
  font-size: clamp(2.4rem, 8vw, 7.4rem);
  font-weight: 700;
  letter-spacing: -0.08em;
}

.intro strong {
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.intro.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  height: 58px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 0 max(22px, 4vw);
  color: rgba(255, 255, 255, 0.86);
  background: rgba(0, 0, 0, 0.46);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background 240ms ease, border-color 240ms ease;
}

.nav.is-scrolled {
  background: rgba(0, 0, 0, 0.76);
  border-color: var(--line);
}

.brand {
  justify-self: start;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.nav nav {
  display: flex;
  gap: 24px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.85rem;
}

.nav nav a:hover,
.nav-cta:hover {
  color: var(--white);
}

.nav-cta {
  justify-self: end;
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 650;
}

.scene {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
}

.eyebrow {
  margin: 0;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 650;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

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

.button.primary {
  background: var(--blue);
  color: #fff;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.hero {
  display: grid;
  align-items: center;
  padding: 90px max(24px, 6vw) 56px;
}

.signal-canvas,
.noise-canvas,
.final-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero::after,
.noise::after,
.final::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 45%, transparent 0 24%, rgba(0, 0, 0, 0.18) 55%, rgba(0, 0, 0, 0.82) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.2), #000 98%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(860px, 100%);
}

.hero h1 {
  margin: 18px 0 0;
  font-size: clamp(5.2rem, 14vw, 13.5rem);
  line-height: 0.82;
  letter-spacing: -0.11em;
}

.hero-line {
  margin: 28px 0 0;
  max-width: 780px;
  font-size: clamp(2.35rem, 6.8vw, 6.8rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.075em;
}

.hero-sub {
  max-width: 580px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(1.05rem, 1.8vw, 1.38rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.hero-proof {
  position: absolute;
  z-index: 3;
  right: max(24px, 6vw);
  bottom: 8vh;
  width: min(360px, calc(100% - 48px));
  padding: 22px;
  border-top: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.proof-kicker {
  color: var(--muted);
  font-size: 0.84rem;
}

.hero-proof h2 {
  margin: 10px 0 0;
  font-size: 1.8rem;
  letter-spacing: -0.05em;
}

.hero-proof p {
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.6;
}

.proof-meter {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.proof-meter span {
  position: relative;
  display: block;
  padding-top: 10px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.proof-meter span::before,
.proof-meter span::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  border-radius: 999px;
}

.proof-meter span::before {
  width: 100%;
  background: rgba(255, 255, 255, 0.12);
}

.proof-meter span::after {
  width: var(--w);
  background: var(--blue);
  transform-origin: left;
  animation: grow-meter 1200ms ease both;
}

.scroll-hint {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 24px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.8rem;
  transform: translateX(-50%);
}

.noise {
  display: grid;
  align-items: center;
  padding: 96px max(24px, 7vw);
}

.noise-copy {
  position: relative;
  z-index: 2;
  width: min(780px, 100%);
}

.noise-copy h2,
.section-title h2,
.persona-copy h2,
.final-copy h2 {
  margin: 16px 0 0;
  font-size: clamp(3rem, 7vw, 7.2rem);
  line-height: 0.98;
  letter-spacing: -0.075em;
}

.noise-copy p:not(.eyebrow),
.section-title p:not(.eyebrow),
.persona-copy p,
.final-copy p:not(.eyebrow) {
  max-width: 660px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  line-height: 1.75;
}

.noise-verdict {
  position: absolute;
  z-index: 2;
  right: max(24px, 8vw);
  bottom: 12vh;
  width: min(360px, calc(100% - 48px));
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.noise-verdict span {
  color: var(--muted-2);
  font-size: 0.85rem;
}

.noise-verdict strong {
  display: block;
  margin-top: 10px;
  font-size: 1.55rem;
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.filter,
.persona,
.little-me,
.trust,
.final {
  padding: 116px max(24px, 6vw);
}

.section-title {
  position: relative;
  z-index: 1;
  width: min(980px, 100%);
  margin: 0 auto 68px;
  text-align: center;
}

.section-title.left {
  margin-left: 0;
  text-align: left;
}

.filter-stage {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 300px 360px;
  gap: 34px;
  align-items: center;
}

.signal-cloud {
  position: relative;
  min-height: 520px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-cloud span {
  position: absolute;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.9rem;
  animation: drift 9s ease-in-out infinite alternate;
}

.signal-cloud span:nth-child(1) { left: 8%; top: 18%; }
.signal-cloud span:nth-child(2) { left: 44%; top: 8%; animation-delay: -1s; }
.signal-cloud span:nth-child(3) { left: 22%; top: 42%; animation-delay: -2s; }
.signal-cloud span:nth-child(4) { left: 58%; top: 36%; color: var(--white); border-color: var(--blue); }
.signal-cloud span:nth-child(5) { left: 12%; top: 72%; animation-delay: -3s; }
.signal-cloud span:nth-child(6) { left: 66%; top: 72%; color: var(--white); }
.signal-cloud span:nth-child(7) { left: 42%; top: 58%; animation-delay: -4s; }
.signal-cloud span:nth-child(8) { left: 72%; top: 16%; animation-delay: -5s; }
.signal-cloud span:nth-child(9) { left: 34%; top: 84%; color: var(--white); border-color: rgba(255, 255, 255, 0.34); }
.signal-cloud span:nth-child(10) { left: 4%; top: 50%; color: var(--white); animation-delay: -2.5s; }
.signal-cloud span:nth-child(11) { left: 76%; top: 52%; border-color: rgba(0, 113, 227, 0.5); animation-delay: -4.5s; }
.signal-cloud span:nth-child(12) { left: 54%; top: 86%; animation-delay: -6s; }

.filter-stack {
  display: grid;
  gap: 14px;
}

.filter-layer {
  min-height: 92px;
  padding: 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: rgba(255, 255, 255, 0.48);
  text-align: left;
  cursor: pointer;
  transition: border-color 220ms ease, color 220ms ease, transform 220ms ease, background 220ms ease;
}

.filter-layer:hover,
.filter-layer.is-active {
  color: var(--white);
  border-color: rgba(0, 113, 227, 0.72);
  background: rgba(0, 113, 227, 0.08);
  transform: translateX(6px);
}

.filter-layer span {
  display: block;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.filter-layer strong {
  display: block;
  margin-top: 10px;
  font-size: 1.05rem;
}

.clear-match {
  min-height: 420px;
  display: grid;
  align-content: center;
  padding: 30px 0 30px 30px;
  border-left: 1px solid var(--line);
}

.clear-match p {
  color: var(--muted-2);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.clear-match h3 {
  margin: 12px 0 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.clear-match span {
  display: block;
  max-width: 300px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.7;
}

.signal-evidence {
  width: min(310px, 100%);
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.signal-evidence b {
  display: block;
  color: var(--white);
  font-size: 2.8rem;
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.signal-evidence em {
  display: block;
  margin-top: 8px;
  color: var(--blue);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-evidence small {
  display: block;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.54);
  line-height: 1.65;
}

.persona {
  display: grid;
  grid-template-columns: minmax(340px, 0.86fr) minmax(420px, 1.14fr);
  gap: 56px;
  align-items: center;
}

.persona-copy {
  position: relative;
  z-index: 2;
}

.persona-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(560px, 100%);
  margin-top: 38px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.persona-stats div {
  padding: 18px 16px;
  background: var(--black);
}

.persona-stats span {
  display: block;
  color: var(--muted-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.persona-stats strong {
  display: block;
  margin-top: 12px;
  font-size: 2.4rem;
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.persona-map {
  position: relative;
  width: min(680px, 100%);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

.persona-map svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 40px 90px rgba(0, 113, 227, 0.18));
}

.map-ring,
.map-lines line {
  fill: none;
  stroke: rgba(255, 255, 255, 0.18);
  stroke-width: 1;
}

.map-ring.soft {
  stroke: rgba(255, 255, 255, 0.1);
}

.map-lines line {
  stroke-dasharray: 5 8;
}

.map-fill {
  fill: rgba(0, 113, 227, 0.2);
  stroke: rgba(98, 181, 255, 0.9);
  stroke-width: 2;
  transform-origin: center;
  animation: radar-in 1000ms ease both;
}

.map-fill.second {
  fill: rgba(255, 255, 255, 0.08);
  stroke: rgba(255, 255, 255, 0.42);
}

.map-core {
  fill: var(--blue);
}

.persona-controls {
  position: absolute;
  inset: 0;
}

.persona-controls button {
  position: absolute;
  min-width: 112px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.74);
  color: rgba(255, 255, 255, 0.72);
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.persona-controls button:hover,
.persona-controls button.is-active {
  color: var(--white);
  border-color: var(--blue);
  transform: scale(1.04);
}

.persona-controls button:nth-child(1) { left: 50%; top: 0; transform: translateX(-50%); }
.persona-controls button:nth-child(2) { right: 2%; top: 24%; }
.persona-controls button:nth-child(3) { right: 6%; bottom: 19%; }
.persona-controls button:nth-child(4) { left: 50%; bottom: 0; transform: translateX(-50%); }
.persona-controls button:nth-child(5) { left: 2%; bottom: 19%; }
.persona-controls button:nth-child(6) { left: 2%; top: 24%; }

.little-me {
  min-height: auto;
}

.calibration {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.phone-demo {
  min-height: 640px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 42px;
  background: linear-gradient(180deg, #111, #050505);
  box-shadow: 0 42px 120px rgba(0, 0, 0, 0.58);
}

.phone-bar {
  width: 92px;
  height: 5px;
  margin: 0 auto 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.24);
}

.chat-feed {
  min-height: 460px;
  display: grid;
  align-content: end;
  gap: 14px;
}

.bubble {
  max-width: 86%;
  padding: 13px 15px;
  border-radius: 20px;
  color: var(--white);
  line-height: 1.48;
  animation: bubble-in 360ms ease both;
}

.bubble.user {
  justify-self: end;
  background: var(--blue);
}

.bubble.me {
  justify-self: start;
  background: rgba(255, 255, 255, 0.09);
}

.model-state {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.model-state span {
  color: var(--muted);
  font-size: 0.85rem;
}

.model-state div {
  height: 3px;
  margin-top: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.model-state i {
  display: block;
  width: var(--w);
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
  transition: width 420ms ease;
}

.model-state ul {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.model-state li {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.88rem;
}

.model-state li::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--blue);
  vertical-align: middle;
}

.calibration-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(260px, 1fr));
  gap: 16px;
  overflow-x: auto;
  padding: 8px 0 18px;
  scroll-snap-type: x mandatory;
}

.calibration-card {
  min-height: 320px;
  padding: 24px;
  border: 1px solid var(--line);
  background: transparent;
  color: rgba(255, 255, 255, 0.54);
  text-align: left;
  cursor: pointer;
  scroll-snap-align: start;
  transition: color 220ms ease, border-color 220ms ease, background 220ms ease, transform 220ms ease;
}

.calibration-card:hover,
.calibration-card.is-active {
  color: var(--white);
  border-color: rgba(0, 113, 227, 0.72);
  background: rgba(0, 113, 227, 0.08);
  transform: translateY(-6px);
}

.calibration-card span {
  color: var(--blue);
  font-weight: 800;
}

.calibration-card strong {
  display: block;
  margin-top: 88px;
  font-size: 1.7rem;
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.calibration-card p {
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.65;
}

.calibration-card small {
  display: block;
  margin-top: 34px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.44);
  font-size: 0.82rem;
}

.trust-grid {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}

.cost-control,
.privacy-control {
  min-height: 560px;
  padding: 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.control-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.control-tabs button {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.58);
  cursor: pointer;
}

.control-tabs button.is-active {
  color: var(--white);
  border-color: var(--blue);
}

.cost-bars {
  display: grid;
  gap: 24px;
  margin-top: 72px;
}

.cost-bars div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 18px;
  align-items: center;
}

.cost-bars span {
  color: var(--muted);
  font-size: 0.9rem;
}

.cost-bars i {
  position: relative;
  height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.cost-bars i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w);
  border-radius: inherit;
  background: var(--blue);
  transition: width 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.cost-control p {
  max-width: 470px;
  margin-top: 28px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.18rem;
  line-height: 1.7;
}

.cost-readout {
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.cost-readout strong {
  display: block;
  font-size: 2rem;
  line-height: 1.1;
  letter-spacing: -0.05em;
}

.cost-readout span {
  display: block;
  max-width: 420px;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.65;
}

.privacy-layers {
  display: grid;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.privacy-layer {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 16px;
  align-items: center;
  min-height: 72px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: rgba(255, 255, 255, 0.52);
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease, transform 180ms ease;
}

.privacy-layer:last-child {
  border-bottom: 0;
}

.privacy-layer:hover,
.privacy-layer.is-active {
  color: var(--white);
  transform: translateX(6px);
}

.privacy-layer span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
}

.privacy-layer strong {
  font-size: 1.18rem;
  letter-spacing: -0.035em;
}

.privacy-layer em {
  color: rgba(255, 255, 255, 0.38);
  font-size: 0.78rem;
  font-style: normal;
  text-transform: uppercase;
}

.privacy-panel {
  margin-top: 42px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  transition: opacity 160ms ease, transform 160ms ease;
}

.privacy-panel span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.privacy-panel strong {
  display: block;
  margin-top: 16px;
  font-size: 2.25rem;
  line-height: 1.13;
  letter-spacing: -0.05em;
}

.privacy-panel p {
  max-width: 430px;
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.72;
}

.privacy-panel dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.privacy-panel div {
  padding: 16px 14px;
  background: var(--black);
}

.privacy-panel dt {
  color: var(--muted-2);
  font-size: 0.76rem;
}

.privacy-panel dd {
  margin: 8px 0 0;
  color: var(--white);
  font-size: 0.95rem;
}

.final {
  display: grid;
  place-items: center;
  text-align: center;
}

.final-copy {
  position: relative;
  z-index: 2;
}

.final-copy .hero-actions {
  justify-content: center;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 760ms ease, transform 760ms ease;
}

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

@keyframes grow-meter {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes drift {
  from { transform: translate3d(-12px, 8px, 0); }
  to { transform: translate3d(16px, -10px, 0); }
}

@keyframes bubble-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 980px) {
  .nav {
    grid-template-columns: 1fr auto;
  }

  .nav nav {
    display: none;
  }

  .hero {
    align-items: start;
    padding-top: 92px;
  }

  .hero-proof {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 56px;
  }

  .filter-stage,
  .persona,
  .calibration,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .signal-cloud {
    min-height: 360px;
  }

  .clear-match {
    min-height: auto;
    padding: 30px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .persona-map {
    max-width: 600px;
  }

  .persona-stats {
    max-width: 620px;
  }

  .phone-demo {
    width: min(360px, 100%);
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .hero,
  .noise,
  .filter,
  .persona,
  .little-me,
  .trust,
  .final {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero h1 {
    font-size: 4.6rem;
  }

  .hero-line,
  .noise-copy h2,
  .section-title h2,
  .persona-copy h2,
  .final-copy h2 {
    font-size: 3rem;
  }

  .noise-verdict {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 70px;
  }

  .persona-controls {
    position: static;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    margin-top: 18px;
    padding-bottom: 10px;
  }

  .persona-controls button {
    position: static;
    flex: 0 0 auto;
    transform: none !important;
  }

  .persona-stats {
    grid-template-columns: 1fr;
  }

  .calibration-track {
    grid-template-columns: repeat(4, minmax(238px, 78vw));
  }

  .cost-control,
  .privacy-control {
    padding: 24px 0;
  }

  .privacy-layer {
    grid-template-columns: 34px 1fr;
    padding: 14px 0;
  }

  .privacy-layer em {
    grid-column: 2;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}