:root {
  --bg: #0c0c0d;
  --surface: #151516;
  --surface-2: #1b1b1c;
  --surface-3: #242425;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #ecebea;
  --muted: #9ea2a3;
  --faint: #6c7071;
  --accent: #4edea3;
  --accent-2: #5cc8ff;
  --accent-ink: #00301f;
  --warn: #f5c35b;
  --radius: 18px;
  --max: 1160px;
  /* System fonts only: no third-party font requests on a privacy product's site. */
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", system-ui, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.i {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.nav.scrolled {
  background: rgba(12, 12, 13, 0.72);
  border-bottom-color: var(--line);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 650;
  text-decoration: none;
}

.brand-mark {
  display: block;
  width: 34px;
  height: 34px;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  font-size: 15px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 12px;
  background: linear-gradient(180deg, #62e8b1, var(--accent));
  color: var(--accent-ink);
  font-weight: 650;
  text-decoration: none;
  box-shadow: 0 0 0 1px rgba(78, 222, 163, 0.5), 0 8px 30px rgba(78, 222, 163, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(78, 222, 163, 0.7), 0 12px 40px rgba(78, 222, 163, 0.35);
}

.btn .i {
  stroke-width: 2.2;
  transition: transform 0.15s ease;
}

.btn:hover .i {
  transform: translateX(3px);
}

.btn-small {
  padding: 9px 18px;
  font-size: 15px;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 88px 24px 40px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  inset: -120px 0 auto;
  height: 900px;
  z-index: -1;
  background:
    radial-gradient(520px 320px at 50% 18%, rgba(78, 222, 163, 0.22), transparent 70%),
    radial-gradient(620px 380px at 78% 58%, rgba(92, 200, 255, 0.12), transparent 70%),
    radial-gradient(560px 360px at 20% 62%, rgba(78, 222, 163, 0.1), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: -80px -200px auto;
  height: 820px;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 55% 60% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 55% 60% at 50% 30%, #000 20%, transparent 75%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 28px;
  padding: 7px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 14px;
}

.eyebrow .dot {
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 2px var(--accent);
    opacity: 0.6;
  }
}

.hero h1 {
  font-size: clamp(48px, 8.4vw, 104px);
  font-weight: 760;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.gradient {
  background: linear-gradient(100deg, var(--accent) 10%, #9df5d0 45%, var(--accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 36em;
  margin: 28px auto 36px;
  color: var(--muted);
  font-size: 19px;
}

.lede strong {
  color: var(--text);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.hero-proof li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-proof .i {
  color: var(--accent);
  font-size: 16px;
}

/* ---------- app mockup ---------- */

.app {
  position: relative;
  margin: 72px auto 0;
  max-width: 1000px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: #111112;
  text-align: left;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.6),
    0 40px 120px rgba(0, 0, 0, 0.7),
    0 0 90px rgba(78, 222, 163, 0.08);
  overflow: hidden;
}

.app::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.app-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  border-bottom: 1px solid var(--line);
  background: #171718;
}

.lights {
  position: absolute;
  left: 14px;
  display: flex;
  gap: 8px;
}

.lights i {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff5f57;
}

.lights i:nth-child(2) {
  background: #febc2e;
}

.lights i:nth-child(3) {
  background: #28c840;
}

.app-title {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.app-main {
  display: grid;
  grid-template-columns: 210px 1fr;
  height: 520px;
}

.app-side {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 12px;
  border-right: 1px solid var(--line);
  background: #0f0f10;
  font-size: 14px;
}

.side-mark {
  width: 30px;
  height: 30px;
  margin: 0 0 18px 8px;
}

.side-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 9px;
  color: var(--muted);
}

.side-item .i {
  font-size: 17px;
}

.side-item.active {
  background: rgba(78, 222, 163, 0.1);
  color: var(--accent);
}

.side-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 10px;
  color: var(--faint);
  font-size: 12px;
}

.app-chat {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.app-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.bell {
  position: relative;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--muted);
  font-size: 18px;
}

.bell b {
  position: absolute;
  top: 0;
  right: 0;
  display: grid;
  place-items: center;
  min-width: 15px;
  height: 15px;
  border-radius: 99px;
  background: #f0b429;
  color: #000;
  font-size: 10px;
}

.chat {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 14px;
  padding: 24px 28px 12px;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, transparent, #000 18%);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 18%);
}

.msg {
  flex-shrink: 0;
  max-width: 82%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 15px;
  line-height: 1.55;
}

.msg.user {
  align-self: flex-end;
  background: var(--surface-3);
  border-bottom-right-radius: 5px;
}

.msg.bot {
  align-self: flex-start;
  border: 1px solid var(--line);
  background: var(--surface);
  border-bottom-left-radius: 5px;
}

.msg.enter {
  animation: rise 0.45s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
}

.msg.thinking {
  display: inline-flex;
  gap: 5px;
  padding: 16px 18px;
}

.msg.thinking i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: blink 1s infinite ease-in-out;
}

.msg.thinking i:nth-child(2) {
  animation-delay: 0.15s;
}

.msg.thinking i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes blink {
  0%,
  80%,
  100% {
    opacity: 0.25;
  }
  40% {
    opacity: 1;
  }
}

.msg table {
  width: 100%;
  margin: 10px 0 2px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.msg th,
.msg td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

.msg th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
}

.msg tr:last-child td {
  border-bottom: 0;
}

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.tag.warn {
  background: rgba(245, 195, 91, 0.12);
  color: var(--warn);
}

.source {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--accent);
  font-size: 12.5px;
}

.source.fact {
  color: var(--accent-2);
}

.choices {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.choices span {
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  font-size: 13px;
}

.composer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 8px 20px 20px;
  padding: 12px 12px 12px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface);
  color: var(--faint);
  font-size: 15px;
}

.composer.typing {
  color: var(--text);
}

.composer.typing #composer-text::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 2px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: caret 1s steps(1) infinite;
}

@keyframes caret {
  50% {
    opacity: 0;
  }
}

.send {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 15px;
}

.send .i {
  stroke-width: 2.2;
}

/* ---------- marquee ---------- */

.marquee {
  position: relative;
  margin: 72px 0 24px;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee-track {
  display: flex;
  gap: 12px;
  width: max-content;
  animation: scroll 60s linear infinite;
}

.marquee-track span {
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--muted);
  font-size: 15px;
  white-space: nowrap;
}

@keyframes scroll {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- sections ---------- */

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 112px 24px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}

.kicker {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section h2 {
  font-size: clamp(34px, 4.6vw, 54px);
  font-weight: 720;
}

.section-lede {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

/* ---------- bento ---------- */

.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.card {
  grid-column: span 2;
  position: relative;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:nth-child(4),
.card:nth-child(5) {
  grid-column: span 3;
}

.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.card::after {
  content: "";
  position: absolute;
  inset: auto -40% -60% auto;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(78, 222, 163, 0.1), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.card:hover::after {
  opacity: 1;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  border: 1px solid rgba(78, 222, 163, 0.25);
  border-radius: 12px;
  background: rgba(78, 222, 163, 0.08);
  color: var(--accent);
  font-size: 21px;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
}

/* ---------- memory ---------- */

.memory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.memory-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.memory-card h3 {
  margin-bottom: 12px;
  font-size: 26px;
}

.memory-card > p {
  margin: 0;
  color: var(--muted);
}

.memory-tag {
  margin: 0 0 8px !important;
  color: var(--accent) !important;
  font-size: 14px;
  font-weight: 600;
}

.memory-card:nth-child(2) .memory-tag {
  color: var(--accent-2) !important;
}

.tech {
  display: inline-block;
  margin-top: 20px !important;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--faint) !important;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12.5px;
}

.memory-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  height: 172px;
  margin-bottom: 28px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(300px 140px at 80% 100%, rgba(78, 222, 163, 0.1), transparent 70%),
    #0f0f10;
  overflow: hidden;
}

.memory-visual.facts {
  background:
    radial-gradient(300px 140px at 80% 100%, rgba(92, 200, 255, 0.1), transparent 70%),
    #0f0f10;
}

.doc,
.fact-line {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface-2);
  font-size: 14px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

.doc .i {
  color: var(--accent);
}

.fact-line .i {
  color: var(--accent-2);
}

.doc.d2 {
  margin-left: 36px;
}

.doc.d3 {
  margin-left: 72px;
}

.fact-line:nth-child(2) {
  margin-left: 24px;
}

.fact-line:nth-child(3) {
  margin-left: 48px;
}

/* ---------- alerts ---------- */

.alerts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.checks {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.checks li {
  position: relative;
  padding: 7px 0 7px 32px;
  color: var(--text);
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234edea3' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E")
      center / 12px no-repeat,
    rgba(78, 222, 163, 0.14);
}

.alerts-visual {
  position: relative;
  padding: 36px 0 0 36px;
}

.notif {
  position: absolute;
  top: 0;
  right: -12px;
  z-index: 2;
  display: flex;
  gap: 12px;
  width: 330px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: rgba(50, 50, 52, 0.72);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
  animation: float 6s ease-in-out infinite;
}

.notif img {
  width: 38px;
  height: 38px;
}

.notif p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.35;
}

.notif-app {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px !important;
}

.notif-title {
  font-weight: 650;
}

.notif-body {
  color: #cfd0d0;
}

@keyframes float {
  50% {
    transform: translateY(-6px);
  }
}

.panel {
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.panel-head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.panel-head p {
  margin: 0;
  font-weight: 650;
  font-size: 15px;
}

.panel-head span,
.panel-row span {
  color: var(--muted);
  font-size: 12.5px;
}

.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.panel-row:last-child {
  border-bottom: 0;
}

.panel-row p {
  margin: 0;
  font-size: 14.5px;
}

.panel-row .tag {
  padding: 4px 11px;
}

/* ---------- privacy ---------- */

.private {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(600px 300px at 0% 0%, rgba(78, 222, 163, 0.12), transparent 70%),
    radial-gradient(500px 300px at 100% 100%, rgba(92, 200, 255, 0.08), transparent 70%),
    var(--surface);
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.stats div {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.25);
}

.stats b {
  display: block;
  font-family: var(--display);
  font-size: 46px;
  font-weight: 750;
  line-height: 1;
  letter-spacing: -0.03em;
}

.stats span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.tech-grid article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tech-grid .i {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 22px;
}

.tech-grid h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.tech-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- steps ---------- */

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 44px;
  right: calc(33% - 20px);
  height: 1px;
  background: linear-gradient(90deg, rgba(78, 222, 163, 0.5), rgba(78, 222, 163, 0.05));
}

.steps li {
  position: relative;
}

.step {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  border: 1px solid rgba(78, 222, 163, 0.4);
  border-radius: 50%;
  background: var(--bg);
  color: var(--accent);
  font-weight: 700;
  box-shadow: 0 0 24px rgba(78, 222, 163, 0.2);
}

.steps h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.steps p {
  margin: 0;
  max-width: 22em;
  color: var(--muted);
  font-size: 15.5px;
}

/* ---------- faq ---------- */

.faq {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.faq .section-head {
  margin: 0;
}

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

.faq-list details:first-child {
  border-top: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 22px 40px 22px 0;
  font-size: 18px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 24px;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-list details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-list details p {
  margin: -6px 0 22px;
  max-width: 38em;
  color: var(--muted);
}

/* ---------- beta ---------- */

.beta {
  position: relative;
  max-width: 880px;
  margin: 128px auto 112px;
  padding: 72px 40px;
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  background: var(--surface);
  text-align: center;
  overflow: hidden;
}

.beta-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(420px 240px at 50% 0%, rgba(78, 222, 163, 0.25), transparent 70%),
    radial-gradient(360px 200px at 50% 110%, rgba(92, 200, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.beta > * {
  position: relative;
}

.beta-mark {
  width: 72px;
  height: 72px;
  margin-bottom: 24px;
  filter: drop-shadow(0 10px 30px rgba(78, 222, 163, 0.3));
}

.beta h2 {
  font-size: clamp(32px, 4.4vw, 50px);
  font-weight: 740;
}

.beta > p {
  max-width: 32em;
  margin: 18px auto 32px;
  color: var(--muted);
  font-size: 18px;
}

.beta > .signup-pending {
  display: inline-block;
  margin: 0;
  padding: 13px 22px;
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  color: var(--text);
  font-size: 16px;
}

.requirements {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 26px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.requirements li::before {
  content: "✓ ";
  color: var(--accent);
}

/* ---------- footer ---------- */

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

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 24px 44px;
  font-size: 14px;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
}

.footer-inner .muted {
  margin-left: auto;
  color: var(--faint);
}

.faq-list details p a,
.footer-inner a:not(.brand),
.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- terms and uninstall ---------- */

.prose {
  max-width: 720px;
  color: var(--muted);
}

.prose h3 {
  margin: 40px 0 10px;
  color: var(--text);
  font-size: 21px;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 14px;
}

.prose li {
  margin-bottom: 8px;
}

.prose strong,
.prose code {
  color: var(--text);
}

.prose code {
  font-size: 0.88em;
  overflow-wrap: anywhere;
}

/* ---------- scroll reveal ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.js .reveal.shown {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1000px) {
  .bento {
    grid-template-columns: 1fr 1fr;
  }

  .card,
  .card:nth-child(4),
  .card:nth-child(5) {
    grid-column: span 1;
  }

  .card:nth-child(5) {
    grid-column: span 2;
  }

  .alerts,
  .private,
  .faq {
    grid-template-columns: 1fr;
  }

  .alerts {
    gap: 40px;
  }

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

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .nav-links {
    display: none;
  }

  .nav-inner {
    justify-content: space-between;
  }

  .hero {
    padding-top: 56px;
  }

  .app-main {
    grid-template-columns: 1fr;
    height: 470px;
  }

  .app-side {
    display: none;
  }

  .chat {
    padding: 18px 14px 8px;
  }

  .msg {
    max-width: 94%;
    font-size: 14px;
  }

  .msg th,
  .msg td {
    padding: 6px;
    font-size: 12px;
  }

  .bento,
  .memory,
  .tech-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .card:nth-child(5) {
    grid-column: span 1;
  }

  .memory-card {
    padding: 22px;
  }

  .memory-visual {
    padding: 16px;
  }

  .doc,
  .fact-line {
    font-size: 13px;
    white-space: nowrap;
  }

  .doc.d2,
  .fact-line:nth-child(2) {
    margin-left: 12px;
  }

  .doc.d3,
  .fact-line:nth-child(3) {
    margin-left: 24px;
  }

  .steps::before {
    display: none;
  }

  .section {
    padding-top: 88px;
  }

  .private {
    padding: 32px 22px;
  }

  .alerts-visual {
    padding: 72px 0 0;
  }

  .notif {
    right: 0;
    left: 0;
    width: auto;
    max-width: 340px;
    margin: 0 auto;
  }

  .beta {
    margin: 96px 16px 80px;
    padding: 52px 22px;
  }

  .footer-inner .muted {
    margin-left: 0;
  }
}