:root {
  --bg: #08090a;
  --bg-2: #0f1012;
  --bg-3: #16181b;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #f2f3f5;
  --muted: #9aa0a8;
  --glow: #c6f4fd;
  --glow-2: #92e3f4;
  --eye: #26303a;
  --radius: 22px;
  --display: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --body: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.05; margin: 0; }
p { margin: 0; }
.wrap { width: min(1160px, 100% - 40px); margin-inline: auto; }
.muted { color: var(--muted); }
.eyebrow {
  font: 500 13px/1 var(--display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--glow-2);
}

/* ---------- Buttons ---------- */
.btn {
  --h: 52px;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: var(--h); padding: 0 26px;
  border-radius: 999px; border: 1px solid transparent;
  font: 600 16px/1 var(--body); text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary { background: var(--glow); color: #061015; box-shadow: 0 0 0 0 rgba(198, 244, 253, 0); }
.btn-primary:hover { background: #dbf9ff; box-shadow: 0 0 40px rgba(198, 244, 253, .35); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn-ghost:hover { border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.03); }
.btn:focus-visible, select:focus-visible, .chip:focus-visible, summary:focus-visible {
  outline: 2px solid var(--glow); outline-offset: 3px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  background: rgba(8, 9, 10, .72);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 600 18px/1 var(--display); letter-spacing: -0.01em; }
.brand img { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--muted); transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav .btn { --h: 40px; padding: 0 18px; font-size: 14px; color: #061015; }
@media (max-width: 640px) { .nav-links a:not(.btn) { display: none; } }

/* ---------- Device (CSS rendering of the real thing) ---------- */
.device {
  --size: 420px;
  position: relative;
  width: var(--size);
  max-width: 100%;
  aspect-ratio: 1;
  flex: none;
}
.device::before { /* glow cast on the desk */
  content: ''; position: absolute; inset: -30%;
  background: radial-gradient(circle, rgba(170, 236, 252, .16) 0%, rgba(170, 236, 252, .05) 35%, transparent 62%);
  pointer-events: none;
}
.device::after { /* contact shadow */
  content: ''; position: absolute; left: 8%; right: 8%; bottom: -9%; height: 12%;
  background: radial-gradient(ellipse at center, rgba(0,0,0,.85), transparent 70%);
  filter: blur(6px); z-index: -1;
}
.ring {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    radial-gradient(circle at 30% 18%, rgba(255,255,255,.14), transparent 40%),
    conic-gradient(from 210deg, rgba(255,255,255,.02), rgba(255,255,255,.09) 18%, rgba(255,255,255,.02) 36%, rgba(255,255,255,.0) 60%, rgba(255,255,255,.05) 82%, rgba(255,255,255,.02)),
    radial-gradient(circle at 50% 50%, #222327 0%, #18191c 66%, #0b0b0d 100%);
  box-shadow:
    inset 0 2px 1px rgba(255,255,255,.14),
    inset 0 -12px 26px rgba(0,0,0,.8),
    0 0 0 1px rgba(255,255,255,.09),
    0 50px 90px -30px rgba(0,0,0,.95);
}
.bezel {
  position: absolute; inset: 12.5%; border-radius: 50%;
  background: #030304;
  box-shadow: 0 0 0 1.5px #202124, 0 0 0 5px #0a0a0b, inset 0 0 10px #000;
}
.screen {
  position: absolute; inset: 3.5%; border-radius: 50%; overflow: hidden;
  background: radial-gradient(circle at 42% 36%, #f3feff 0%, #d2f7fe 42%, #ade9f7 100%);
  box-shadow:
    0 0 50px rgba(170, 236, 252, .45),
    0 0 130px rgba(170, 236, 252, .18),
    inset 0 0 26px rgba(70, 160, 190, .35);
  transition: background .4s ease;
}
.screen::before { /* listening pulse */
  content: ''; position: absolute; inset: 0; border-radius: 50%;
  box-shadow: inset 0 0 0 0 rgba(80, 175, 205, .0);
}
.face {
  position: absolute; inset: 0;
  transform: translate(var(--lx, 0px), var(--ly, 0px));
  transition: transform .45s cubic-bezier(.2, .8, .2, 1);
}
.eye {
  position: absolute; top: 37%;
  width: 13.5%; height: 27%;
  border-radius: 999px;
  background: var(--eye);
  transform-origin: 50% 50%;
  transition: height .28s ease, top .28s ease, width .28s ease, transform .12s ease, border-radius .28s ease, background .2s ease, border-color .2s ease;
}
.eye.l { left: 30%; }
.eye.r { right: 30%; }
.eye::after { /* catch-light */
  content: ''; position: absolute; top: 11%; left: 36%;
  width: 14%; aspect-ratio: 1; border-radius: 50%;
  background: rgba(255,255,255,.8);
  transition: opacity .2s;
}
.device.blink .eye { transform: scaleY(.08); }

/* listening: eyes open wide, screen breathes */
.device[data-state="listening"] .eye { height: 31%; top: 34.5%; }
.device[data-state="listening"] .screen::before { animation: listen 1.6s ease-in-out infinite; }
@keyframes listen {
  0%, 100% { box-shadow: inset 0 0 0 0 rgba(80, 175, 205, .0); }
  50% { box-shadow: inset 0 0 0 calc(var(--size) * .03) rgba(80, 175, 205, .28); }
}
/* thinking: squint and glance up */
.device[data-state="thinking"] .eye { height: 15%; top: 40%; }
.device[data-state="thinking"] .face { animation: ponder 2.4s ease-in-out infinite; }
@keyframes ponder {
  0%, 100% { transform: translate(calc(var(--size) * .05), calc(var(--size) * -.04)); }
  50% { transform: translate(calc(var(--size) * -.05), calc(var(--size) * -.04)); }
}
/* talking: eyes bob along */
.device[data-state="talking"] .eye { animation: talk .42s ease-in-out infinite alternate; }
.device[data-state="talking"] .eye.r { animation-delay: .08s; }
@keyframes talk {
  from { transform: translateY(0) scaleY(1); }
  to { transform: translateY(calc(var(--size) * -.018)) scaleY(.86); }
}
/* happy: ^ ^ */
.device[data-state="happy"] .eye {
  height: 11%; top: 42%; width: 15%;
  background: transparent;
  border: calc(var(--size) * .03) solid var(--eye);
  border-bottom: 0;
  border-radius: 999px 999px 0 0;
}
.device[data-state="happy"] .eye::after { opacity: 0; }
.device[data-state="happy"] .screen { background: radial-gradient(circle at 42% 36%, #f6ffff 0%, #d9f9ff 42%, #b4ecf9 100%); }

@media (prefers-reduced-motion: reduce) {
  .device *, .device *::before { animation: none !important; transition: none !important; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: 72px 0 96px; }
.hero .wrap {
  display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 48px;
}
.hero h1 { font-size: clamp(48px, 7.2vw, 92px); }
.hero h1 span { color: var(--glow); text-shadow: 0 0 40px rgba(198, 244, 253, .35); }
.hero .lede { margin-top: 22px; font-size: clamp(18px, 1.6vw, 21px); color: #c9cdd3; max-width: 30ch; }
.hero .cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero .fine { margin-top: 20px; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.hero .fine span::before { content: '•'; margin-right: 8px; color: var(--glow-2); }
.hero .fine span:first-child::before { content: none; }
.stage { display: flex; flex-direction: column; align-items: center; gap: 44px; }
.stage .device { --size: min(440px, 76vw); }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; position: relative; z-index: 1; }
.chips-label { width: 100%; text-align: center; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.chip {
  height: 36px; padding: 0 16px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(255,255,255,.02);
  color: var(--muted); font: 500 14px/1 var(--body); cursor: pointer;
  transition: all .2s ease;
}
.chip:hover { color: var(--text); border-color: rgba(255,255,255,.28); }
.chip[aria-pressed="true"] { color: #061015; background: var(--glow); border-color: var(--glow); }

@media (max-width: 900px) {
  .hero { padding: 40px 0 72px; }
  .hero .wrap { grid-template-columns: 1fr; text-align: center; gap: 56px; }
  .hero .lede { margin-inline: auto; }
  .hero .cta, .hero .fine { justify-content: center; }
  .stage { gap: 32px; }
  .stage .device { --size: min(320px, 74vw); }
}

/* ---------- Sections ---------- */
section { position: relative; }
section[id] { scroll-margin-top: 64px; }
.section { padding: 112px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(36px, 4.6vw, 56px); margin-top: 14px; }
.section-head p { margin-top: 18px; color: var(--muted); font-size: 18px; }
@media (max-width: 640px) { .section { padding: 80px 0; } .section-head { margin-bottom: 40px; } }

/* meet */
.meet { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.photo {
  position: relative; margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-2);
}
.photo img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.photo figcaption {
  position: absolute; left: 14px; bottom: 14px;
  padding: 7px 12px; border-radius: 999px;
  background: rgba(8, 9, 10, .7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-size: 13px; color: #d5d8dc;
}
.features { display: grid; gap: 28px; margin: 0; padding: 0; list-style: none; }
.features li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.features .ico {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--bg-3); border: 1px solid var(--line);
  color: var(--glow);
}
.features .ico svg { width: 22px; height: 22px; }
.features h3 { font-size: 20px; letter-spacing: -0.01em; }
.features p { margin-top: 6px; color: var(--muted); font-size: 16px; }
@media (max-width: 900px) { .meet { grid-template-columns: 1fr; gap: 44px; } }

/* how */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step {
  position: relative; padding: 32px 28px 30px; border-radius: var(--radius);
  background: linear-gradient(180deg, var(--bg-2), rgba(15, 16, 18, .4));
  border: 1px solid var(--line);
}
.step .num { font: 500 14px/1 var(--display); color: var(--glow-2); letter-spacing: .1em; }
.step .mini { --size: 92px; margin: 26px 0 26px; }
.step .mini::before { inset: -40%; }
.step h3 { font-size: 24px; }
.step p { margin-top: 10px; color: var(--muted); font-size: 16px; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* buy */
.buy {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border-radius: 28px; overflow: hidden;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
}
.buy-stage { position: relative; min-height: 420px; background: #2b2118; border-right: 1px solid var(--line); }
.buy-stage img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.buy-body { padding: 48px 44px; display: flex; flex-direction: column; }
.buy-body h2 { font-size: clamp(34px, 3.6vw, 46px); margin-top: 12px; }
.price { margin-top: 14px; display: flex; align-items: baseline; gap: 12px; }
.price strong { font: 600 40px/1 var(--display); letter-spacing: -0.02em; }
.price span { color: var(--muted); font-size: 15px; }
.buy-body .desc { margin-top: 18px; color: #c4c8ce; font-size: 16px; }
.field { margin-top: 28px; }
.field label { display: block; font-size: 14px; font-weight: 500; color: var(--muted); margin-bottom: 8px; }
.select-wrap { position: relative; }
.select-wrap::after {
  content: ''; position: absolute; right: 18px; top: 50%; width: 8px; height: 8px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
select {
  appearance: none; -webkit-appearance: none;
  width: 100%; height: 52px; padding: 0 44px 0 18px;
  border-radius: 14px; border: 1px solid var(--line-2);
  background: var(--bg-3); color: var(--text);
  font: 500 16px/1 var(--body); cursor: pointer;
}
.summary { margin: 22px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; font-size: 15px; }
.summary div { display: flex; justify-content: space-between; gap: 16px; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; font-variant-numeric: tabular-nums; }
.summary .total { padding-top: 10px; border-top: 1px dashed var(--line-2); font-weight: 600; font-size: 17px; }
.summary .total dt { color: var(--text); }
.buy-body .btn { margin-top: 26px; width: 100%; --h: 58px; font-size: 17px; }
.secure { margin-top: 14px; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 13px; color: var(--muted); text-align: center; }
.secure svg { width: 14px; height: 14px; flex: none; }
.notice {
  margin-top: 18px; padding: 12px 14px; border-radius: 12px; font-size: 14px;
  background: rgba(255, 120, 100, .08); border: 1px solid rgba(255, 120, 100, .3); color: #ffc9bf;
}
@media (max-width: 900px) {
  .buy { grid-template-columns: 1fr; }
  .buy-stage { border-right: 0; border-bottom: 1px solid var(--line); min-height: 0; aspect-ratio: 1 / 1; }
  .buy-body { padding: 36px 24px; }
}

/* faq */
.faq { max-width: 780px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 24px 0; font: 500 19px/1.35 var(--display); letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; flex: none; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid var(--line-2);
  color: var(--muted); font: 400 18px/1 var(--body); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer { padding: 0 0 24px; color: var(--muted); max-width: 64ch; }
.faq .answer ul { margin: 10px 0 0; padding-left: 20px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 48px 0 56px; font-size: 14px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px 40px; align-items: flex-start; }
footer .legal { max-width: 560px; font-size: 13px; line-height: 1.6; }