:root {
  --ink: #1C1C1E;
  --ink2: #3A3A3C;
  --muted: #6C6C70;
  --line: #E5E5EA;
  --bg: #FBFBFD;
  --card: #FFFFFF;
  --soft: #F5F6F8;
  --bv: #4B3FE0;
  --bv-deep: #3730A3;
  --bv-soft: #EEECFC;
  --bv-lav: #F4F1FF;
  --bv-muted: #6B6790;
  --sm: #007AFF;
  --sm-mint: #129C7E;
  --sm-ink: #0B1F33;
  --sm-soft: #F5F9FF;
  --ts: #2A6E57;
  --ts-mint: #6DBB98;
  --ts-warm: #E9875B;
  --ts-bg: #FAF7F2;
  --ts-soft: #E4F4EB;
  --no: #0A84FF;
  --no-tick: #34C759;
  --no-ink: #1C1C1E;
  --no-soft: #F5F6F8;
  --radius: 22px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 12px 40px rgba(28,28,30,.06);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.wrap { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.skip {
  position: absolute; left: -999px; top: 0; background: #000; color: #fff;
  padding: 8px 12px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: saturate(180%) blur(16px);
  background: rgba(251,251,253,.82);
  border-bottom: 1px solid rgba(0,0,0,.04);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.02em; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, #4B3FE0 0%, #0A84FF 42%, #2A6E57 72%, #34C759 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.25);
}
.brand-mark.sm { width: 20px; height: 20px; border-radius: 6px; }
.brand-name { font-size: 17px; }
.nav nav { display: flex; gap: 26px; }
.nav nav a { font-size: 14px; color: var(--muted); font-weight: 500; }
.nav nav a:hover { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center; height: 36px; padding: 0 14px;
  border-radius: 980px; background: var(--ink); color: #fff;
  font-size: 13px; font-weight: 600;
}
@media (max-width: 820px) {
  .nav nav, .nav-cta { display: none; }
}

/* Shared */
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 12px;
}
.sec-head { text-align: center; margin-bottom: 36px; }
.sec-head h2 {
  margin: 0 0 10px; font-size: clamp(28px, 3.5vw, 36px);
  letter-spacing: -.03em; font-weight: 700;
}
.sub { margin: 0 auto; max-width: 520px; color: var(--muted); font-size: 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 20px; border-radius: 980px;
  font-weight: 600; font-size: 15px; border: 0; cursor: pointer;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: .94; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line);
}

/* Hero */
.hero {
  position: relative; overflow: hidden;
  padding: 72px 0 64px;
}
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none;
}
.g1 { width: 360px; height: 360px; background: #4B3FE0; top: -100px; left: 4%; opacity: .16; }
.g2 { width: 280px; height: 280px; background: #0A84FF; top: 60px; right: 6%; opacity: .12; }
.g3 { width: 240px; height: 240px; background: #6DBB98; bottom: -20px; left: 38%; opacity: .16; }
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
}
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.pill-badge {
  display: inline-flex; align-items: center; height: 28px; padding: 0 12px;
  border-radius: 980px; font-size: 12px; font-weight: 650;
}
.pill-badge.bv { background: var(--bv-soft); color: var(--bv-deep); }
.pill-badge.soon { background: var(--soft); color: var(--muted); border: 1px solid var(--line); }
.hero h1 {
  margin: 0 0 16px; font-size: clamp(40px, 6vw, 64px); line-height: 1.05;
  letter-spacing: -.04em; font-weight: 750;
}
.lead {
  margin: 0 0 24px; max-width: 480px; font-size: 18px; color: var(--ink2); line-height: 1.55;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.hero-points {
  list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px;
}
.hero-points li {
  position: relative; padding-left: 22px; color: var(--ink2); font-size: 14px; font-weight: 500;
}
.hero-points li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 10px; height: 10px; border-radius: 50%; background: var(--bv);
}

/* Hero demo */
.hero-demo-wrap { display: flex; flex-direction: column; gap: 10px; }
.hero-demo {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
  min-height: 460px;
}
.demo-chrome {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid #EEECF5; background: #F7F6FC;
}
.demo-dots { display: flex; gap: 6px; }
.demo-dots i { width: 10px; height: 10px; border-radius: 50%; background: #C9C6D9; display: block; }
.demo-title { font-size: 13px; font-weight: 600; color: var(--bv-muted); }
.demo-body {
  padding: 18px 18px 16px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F7F6FE 100%);
  display: flex; flex-direction: column; gap: 14px; min-height: 400px;
}
.demo-thread { display: flex; }
.bubble.in {
  background: #EEEDF5; color: var(--ink);
  border-radius: 16px 16px 16px 6px;
  padding: 10px 14px; font-size: 14px; max-width: 80%;
}
.demo-stage { display: grid; gap: 10px; min-height: 148px; }
.demo-card {
  background: #fff; border: 1px solid #EEECF5; border-radius: 16px;
  padding: 14px 16px; box-shadow: 0 8px 24px rgba(55,48,163,.08);
  opacity: 0; transform: translateY(8px); transition: opacity .35s ease, transform .35s ease;
}
.demo-card.is-on { opacity: 1; transform: none; }
.lbl {
  font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 6px;
}
.lbl.said { color: #D97706; }
.lbl.wrote { color: var(--bv); }
.said-text { margin: 0; color: var(--bv-muted); font-size: 15px; line-height: 1.45; min-height: 1.45em; }
.wrote-text { margin: 0; font-weight: 650; font-size: 16px; line-height: 1.4; min-height: 1.4em; }
.cleaning {
  margin-top: 8px; font-size: 13px; font-weight: 650; color: var(--bv);
  animation: pulse 1.1s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .45; } }
.composer {
  background: #fff; border: 1.5px solid var(--line); border-radius: 14px; padding: 12px 14px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.composer.is-active {
  border-color: var(--bv);
  box-shadow: 0 0 0 4px rgba(75,63,224,.12);
}
.composer-label { font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.composer-field { font-size: 15px; line-height: 1.45; min-height: 48px; color: var(--ink); }
.caret {
  display: inline-block; width: 2px; height: 1.05em; background: var(--bv);
  margin-left: 1px; vertical-align: -2px; animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.demo-pill-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto;
}
.listen-pill {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 16px 0 12px; border-radius: 22px;
  background: var(--bv-deep); color: #fff; font-weight: 700; font-size: 14px;
  box-shadow: 0 10px 24px rgba(55,48,163,.35);
}
.listen-pill.is-listening .wave i { animation-play-state: running; }
.wave { display: inline-flex; align-items: flex-end; gap: 3px; height: 16px; }
.wave i {
  display: block; width: 3px; border-radius: 2px; background: #fff;
  transform-origin: center bottom;
  animation: wave 1s ease-in-out infinite; animation-play-state: paused;
}
.wave i:nth-child(1) { height: 7px; animation-delay: 0s; }
.wave i:nth-child(2) { height: 14px; animation-delay: .1s; }
.wave i:nth-child(3) { height: 10px; animation-delay: .2s; }
.wave i:nth-child(4) { height: 16px; animation-delay: .05s; }
.wave i:nth-child(5) { height: 8px; animation-delay: .15s; }
@keyframes wave {
  0%, 100% { transform: scaleY(.55); opacity: .75; }
  50% { transform: scaleY(1); opacity: 1; }
}
.demo-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 14px; border-radius: 980px;
  border: 1px solid var(--line); background: #fff; color: var(--ink2);
  font-size: 13px; font-weight: 600; cursor: pointer;
}
.demo-toggle .ico-pause,
.demo-toggle .ico-play {
  width: 10px; height: 12px; display: inline-block; position: relative;
}
.demo-toggle .ico-pause::before,
.demo-toggle .ico-pause::after {
  content: ""; position: absolute; top: 0; width: 3px; height: 12px;
  background: currentColor; border-radius: 1px;
}
.demo-toggle .ico-pause::before { left: 0; }
.demo-toggle .ico-pause::after { right: 0; }
.demo-toggle .ico-play {
  width: 0; height: 0; border-style: solid;
  border-width: 6px 0 6px 10px;
  border-color: transparent transparent transparent currentColor;
  background: none;
}
.demo-toggle[aria-pressed="true"] .ico-pause { display: none; }
.demo-toggle[aria-pressed="false"] .ico-play { display: none; }
.demo-toggle[aria-pressed="true"] .ico-play { display: inline-block; }
.demo-caption { margin: 0; text-align: center; font-size: 12px; color: var(--muted); }

/* Story */
.story { padding: 72px 0 40px; }
.timeline {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 28px;
}
@media (max-width: 820px) {
  .timeline { grid-template-columns: 1fr; }
}
.step {
  display: flex; gap: 14px; align-items: flex-start; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  padding: 16px 16px 18px; cursor: pointer; transition: border-color .2s ease, box-shadow .2s ease;
}
.step:hover { border-color: #D7D3F0; }
.step.is-active {
  border-color: rgba(75,63,224,.35);
  box-shadow: 0 0 0 3px rgba(75,63,224,.10);
}
.num {
  flex: none; width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bv-soft); color: var(--bv-deep); font-weight: 750; font-size: 13px;
}
.step.is-active .num { background: var(--bv); color: #fff; }
.step-copy { display: flex; flex-direction: column; gap: 4px; }
.step-copy strong { font-size: 15px; letter-spacing: -.01em; }
.step-copy span { font-size: 13px; color: var(--muted); line-height: 1.4; }
.device-stage {
  position: relative;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bv-lav) 100%);
  border: 1px solid var(--line); border-radius: 28px;
  padding: 28px; min-height: 420px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.device-frame {
  margin: 0; width: min(100%, 920px);
  border-radius: 18px; overflow: hidden;
  box-shadow: 0 18px 50px rgba(28,28,30,.12);
  opacity: 0; transform: translateY(10px) scale(.985);
  transition: opacity .4s ease, transform .4s ease;
  position: absolute;
}
.device-frame.is-active {
  position: relative; opacity: 1; transform: none;
}
.device-frame[hidden] { display: none; }
.device-frame img { width: 100%; height: auto; }

/* Features */
.features { padding: 56px 0 40px; }
.feat-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
}
@media (max-width: 820px) {
  .feat-grid { grid-template-columns: 1fr; }
}
.feat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 12px;
}
.feat h3 { margin: 0; font-size: 18px; letter-spacing: -.02em; }
.feat > p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.feat-demo {
  background: linear-gradient(180deg, #FBFAFF 0%, #F4F1FF 100%);
  border: 1px solid #EEECF5; border-radius: 16px; padding: 14px; min-height: 132px;
}
.dict-row {
  display: flex; gap: 10px; align-items: center; padding: 8px 0;
  border-bottom: 1px solid #EEECF5;
}
.dict-row:last-child { border-bottom: 0; }
.dict-row .ic {
  width: 32px; height: 32px; border-radius: 10px; background: var(--bv); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-weight: 750; font-size: 13px;
}
.dict-row .ic.alt { background: #0EA5E9; }
.dict-row .ic.mint { background: #10B981; }
.dict-row b { display: block; font-size: 14px; }
.dict-row small { color: var(--bv-muted); font-size: 12px; }
.style-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.schip {
  display: inline-flex; padding: 6px 12px; border-radius: 980px;
  font-size: 12px; font-weight: 700; background: #fff; color: var(--bv-deep);
  border: 1px solid #E5E1F7; transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.schip.is-active { color: #fff; border-color: transparent; }
.style-sample { margin: 0; font-size: 14px; font-weight: 600; line-height: 1.45; min-height: 2.9em; }
.tr-line { margin-bottom: 10px; }
.tr-line .tag {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .04em;
  color: #D97706; margin-bottom: 4px;
}
.tr-line.out .tag { color: var(--bv); }
.tr-line b { display: block; font-size: 14px; font-weight: 650; }
.tr-note { font-size: 12px; color: var(--bv-muted); font-weight: 600; }
.sync-row {
  display: flex; align-items: center; gap: 10px; padding: 8px 0;
  font-size: 14px; font-weight: 600; border-bottom: 1px solid #EEECF5;
}
.sync-row:last-child { border-bottom: 0; }
.sync-row em {
  margin-left: auto; font-style: normal; font-size: 11px; font-weight: 650;
  color: var(--muted); background: #fff; border: 1px solid var(--line);
  border-radius: 980px; padding: 3px 8px;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%; background: #C9C6D9;
}
.dot.on { background: var(--bv); box-shadow: 0 0 0 4px rgba(75,63,224,.12); }

/* Apps */
.apps { padding: 56px 0 24px; }
.app-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
}
@media (max-width: 820px) {
  .app-grid { grid-template-columns: 1fr; }
}
.tile {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 28px 24px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 10px; min-height: 300px;
}
.tile-top { display: flex; align-items: flex-start; justify-content: space-between; }
.icon {
  width: 72px; height: 72px; border-radius: 18px; object-fit: cover;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
}
.badge {
  font-size: 12px; font-weight: 600; letter-spacing: .02em;
  color: var(--muted); background: var(--soft);
  border: 1px solid var(--line); border-radius: 980px; padding: 6px 12px;
}
.tile h3 { margin: 6px 0 0; font-size: 28px; letter-spacing: -.03em; line-height: 1.15; }
.tagline { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink2); }
.benefit { margin: 0; flex: 1; color: var(--muted); font-size: 15px; line-height: 1.55; }
.chips { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: 12px; font-weight: 550; color: var(--ink2);
  background: var(--soft); border-radius: 8px; padding: 5px 10px;
}
.wm-bv { font-weight: 700; color: var(--ink); }
.wm-bv span { color: var(--bv); }
.wm-sm { font-family: "Nunito", var(--font); font-weight: 800; font-size: 30px; letter-spacing: -.02em; }
.wm-sm .stak { color: var(--sm-ink); }
.wm-sm .mint { color: var(--sm-mint); }
.wm-ts { font-family: "Fraunces", Georgia, serif; font-weight: 700; color: var(--ts); font-size: 28px; }
.wm-no { font-weight: 700; }
.wm-no .note { color: var(--no-ink); }
.wm-no .outline { color: var(--no); }
.tile-bv { background: linear-gradient(180deg, #FFFFFF 0%, #F7F6FE 100%); }
.tile-sm { background: linear-gradient(180deg, #FFFFFF 0%, #F5F9FF 100%); }
.tile-ts { background: linear-gradient(180deg, #FFFFFF 0%, #FAF7F2 100%); }
.tile-no { background: linear-gradient(180deg, #FFFFFF 0%, #F5F6F8 100%); }
.tile-bv .chips li { background: var(--bv-soft); color: #3D36A8; }
.tile-sm .chips li { background: #E8F1FF; color: #0051A8; }
.tile-ts .chips li { background: var(--ts-soft); color: var(--ts); }
.tile-no .chips li { background: #E8F2FF; color: #0060C0; }
.accent-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; }
.accent-bar.bv { background: linear-gradient(90deg, #4B3FE0, #8B83F2); }
.accent-bar.sm { background: linear-gradient(90deg, #6FA2F5, #007AFF, #2EC4A0); }
.accent-bar.ts { background: linear-gradient(90deg, #2A6E57, #6DBB98, #E9875B); }
.accent-bar.no { background: linear-gradient(90deg, #3A9BFF, #0A84FF, #34C759); }

/* FAQ */
.faq { background: var(--soft); margin-top: 56px; padding: 72px 0; }
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.faq-list details {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 4px 18px;
}
.faq-list summary {
  cursor: pointer; list-style: none; padding: 14px 0; font-weight: 650; font-size: 15px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list details p {
  margin: 0 0 14px; color: var(--muted); font-size: 14px; line-height: 1.55;
}
.faq-list details a { color: var(--bv); font-weight: 600; }

/* Contact */
.contact { padding: 72px 0 48px; text-align: center; }
.contact h2 {
  margin: 0 0 10px; font-size: clamp(28px, 3.5vw, 36px); letter-spacing: -.03em; font-weight: 700;
}
.contact-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* Footer */
footer {
  border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 13px;
}
.foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink); }
.foot p { margin: 0; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .demo-card, .device-frame, .btn, .schip { transition: none !important; }
  .wave i, .cleaning, .caret { animation: none !important; }
  .demo-card { opacity: 1; transform: none; }
}