@font-face {
  font-family: "Nunito Sans";
  src: url("assets/fonts/NunitoSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Nunito Sans";
  src: url("assets/fonts/NunitoSans-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Noto Sans SC";
  src: url("assets/fonts/NotoSansSC-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Noto Sans SC";
  src: url("assets/fonts/NotoSansSC-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

:root {
  --violet: #7047ff;
  --violet-deep: #5428ec;
  --violet-soft: #ece5ff;
  --ink: #2f215b;
  --ink-soft: #6f6585;
  --night: #211a34;
  --night-deep: #181129;
  --cream: #fffcf8;
  --lavender-white: #faf7ff;
  --line: rgba(85, 61, 137, 0.12);
  --yellow: #ffd95a;
  --shadow: 0 24px 70px rgba(78, 42, 170, 0.16);
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--lavender-white);
  font-family: "Nunito Sans", "Noto Sans SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 14px;
  color: white;
  background: var(--ink);
  border-radius: 12px;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }
.shell { width: var(--shell); margin-inline: auto; }
.section { padding: 116px 0; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background 220ms ease, box-shadow 220ms ease, backdrop-filter 220ms ease;
}

.site-header.scrolled {
  background: rgba(250, 247, 255, 0.86);
  box-shadow: 0 1px 0 rgba(68, 42, 120, 0.08);
  backdrop-filter: blur(20px) saturate(150%);
}

.nav-shell {
  width: var(--shell);
  height: 82px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; font-size: 22px; font-weight: 700; letter-spacing: -0.6px; }
.brand img { border-radius: 12px; box-shadow: 0 8px 20px rgba(83, 43, 220, 0.25); }
.site-nav { display: flex; gap: 42px; color: #4d3e73; font-size: 15px; font-weight: 700; }
.site-nav a { position: relative; padding: 12px 0; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 5px; height: 2px; border-radius: 999px; background: var(--violet); transition: right 180ms ease; }
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 0; }
.header-cta { justify-self: end; }
.menu-button { display: none; }

.button {
  border: 0;
  border-radius: 18px;
  min-height: 54px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button svg { width: 20px; height: 20px; fill: currentColor; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid rgba(112, 71, 255, 0.32); outline-offset: 3px; }
.button-primary, .header-cta { color: white; background: linear-gradient(135deg, #805cff, #6032f3); box-shadow: 0 14px 30px rgba(91, 49, 235, 0.25); }
.button-primary:hover, .header-cta:hover { box-shadow: 0 18px 38px rgba(91, 49, 235, 0.34); }
.button-small { min-height: 44px; padding-inline: 19px; border-radius: 15px; font-size: 14px; }
.button-ghost { color: var(--violet-deep); border: 1.5px solid rgba(112, 71, 255, 0.45); background: rgba(255, 255, 255, 0.56); }
.play-icon { width: 25px; height: 25px; display: grid; place-items: center; padding-left: 2px; border: 1px solid currentColor; border-radius: 50%; font-size: 8px; }

.hero {
  min-height: 900px;
  padding-top: 82px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 18%, rgba(139, 100, 255, 0.28), transparent 32%),
    linear-gradient(145deg, #fffcf8 0%, #faf7ff 47%, #f1eaff 100%);
}

.hero::before { content: ""; position: absolute; width: 520px; height: 520px; left: -330px; top: 300px; border-radius: 45%; background: rgba(133, 96, 255, 0.07); transform: rotate(28deg); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(4px); opacity: 0.8; pointer-events: none; }
.hero-glow-one { width: 520px; height: 520px; right: -180px; top: -190px; background: rgba(122, 73, 255, 0.18); }
.hero-glow-two { width: 340px; height: 340px; left: 42%; top: 390px; background: rgba(253, 226, 113, 0.07); }
.hero-grid { min-height: 765px; display: grid; grid-template-columns: 0.92fr 1.08fr; align-items: center; gap: 50px; position: relative; z-index: 2; }
.hero-copy { padding-bottom: 24px; }
.eyebrow, .section-kicker { color: var(--violet); font-size: 12px; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; }
.eyebrow { width: max-content; padding: 9px 14px; border: 1px solid rgba(112, 71, 255, 0.16); border-radius: 999px; background: rgba(255, 255, 255, 0.55); letter-spacing: 0.08em; }
.eyebrow span { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: #46d889; box-shadow: 0 0 0 4px rgba(70, 216, 137, 0.14); }
.hero h1 { margin: 28px 0 24px; font-size: clamp(54px, 5.5vw, 80px); line-height: 1.08; letter-spacing: -4px; }
.hero h1 em { color: var(--violet); font-style: normal; }
.hero-lede { max-width: 580px; margin: 0; color: var(--ink-soft); font-size: 19px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.trust-list { list-style: none; padding: 0; margin: 34px 0 0; display: flex; flex-wrap: wrap; gap: 24px; color: #514374; font-size: 14px; font-weight: 700; }
.trust-list li { display: flex; align-items: center; gap: 8px; }
.trust-icon { width: 26px; height: 26px; display: grid; place-items: center; color: var(--violet); border: 1px solid rgba(112, 71, 255, 0.22); border-radius: 8px; }

.hero-visual { height: 660px; position: relative; }
.hero-moon { position: absolute; width: 520px; height: 520px; border-radius: 50%; right: -25px; top: 60px; background: linear-gradient(145deg, rgba(255,255,255,.78), rgba(220,205,255,.52)); box-shadow: inset -40px -30px 70px rgba(111, 71, 240, 0.1), 0 40px 100px rgba(94, 48, 210, 0.16); }
.hero-moon::after { content: ""; position: absolute; inset: 8%; border: 1px solid rgba(255,255,255,.7); border-radius: inherit; }
.hero-bear { position: absolute; width: 315px; right: -55px; bottom: 20px; z-index: 4; filter: drop-shadow(0 28px 30px rgba(54, 28, 120, 0.17)); }
.phone { padding: 11px; border-radius: 52px; background: linear-gradient(145deg, #3e3454, #0d0914 70%); box-shadow: 0 40px 80px rgba(41, 22, 85, 0.3), inset 0 0 0 2px rgba(255,255,255,.28); }
.phone-hero { position: absolute; width: 306px; top: 22px; left: 40px; z-index: 3; transform: rotate(-2deg); }
.phone-speaker { position: absolute; z-index: 5; top: 17px; left: 50%; width: 90px; height: 24px; transform: translateX(-50%); background: #07050a; border-radius: 999px; }
.phone-screen { overflow: hidden; border-radius: 42px; background: #faf7ff; }
.phone-screen img { width: 100%; }
.floating-card { position: absolute; z-index: 6; display: flex; align-items: center; padding: 14px 16px; border: 1px solid rgba(255,255,255,.8); background: rgba(255,255,255,.84); backdrop-filter: blur(18px); box-shadow: 0 16px 40px rgba(64, 34, 125, 0.17); }
.sound-card { left: 4px; bottom: 73px; width: 320px; border-radius: 21px; gap: 12px; transform: rotate(1.5deg); }
.sound-card-icon { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; color: var(--violet); background: var(--violet-soft); border-radius: 14px; }
.sound-card strong, .sound-card span { display: block; }
.sound-card strong { font-size: 13px; }
.sound-card span { margin-top: 3px; color: var(--ink-soft); font-size: 10px; }
.tiny-wave { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.tiny-wave i { width: 2px; height: 10px; border-radius: 2px; background: var(--violet); }
.tiny-wave i:nth-child(2), .tiny-wave i:nth-child(6) { height: 18px; }
.tiny-wave i:nth-child(3), .tiny-wave i:nth-child(5) { height: 25px; }
.tiny-wave i:nth-child(4) { height: 31px; }
.star { position: absolute; z-index: 7; color: var(--yellow); text-shadow: 0 8px 18px rgba(226, 169, 0, 0.25); }
.star-one { left: 12px; top: 100px; font-size: 28px; transform: rotate(10deg); }
.star-two { right: 8px; top: 240px; font-size: 34px; }
.star-three { right: 85px; top: 64px; font-size: 18px; }
.hand-note { margin: 0; color: #6650aa; font-family: "Noto Sans SC", sans-serif; font-size: 14px; line-height: 1.7; font-style: italic; transform: rotate(-3deg); }
.note-one { position: absolute; right: -16px; bottom: 12px; z-index: 6; }
.wave-divider { position: absolute; z-index: 3; inset: auto 0 -1px; height: 110px; }
.wave-divider svg { width: 100%; height: 100%; }
.wave-divider path { fill: var(--cream); }

.how-section { background: var(--cream); }
.section-heading { max-width: 760px; margin: 0 auto 58px; text-align: center; }
.section-heading h2, .journey-copy h2, .privacy-copy h2, .cta-copy h2, .faq-heading h2 { margin: 14px 0 16px; font-size: clamp(38px, 4vw, 56px); line-height: 1.16; letter-spacing: -2px; }
.section-heading p, .journey-copy > p, .faq-heading p { margin: 0; color: var(--ink-soft); font-size: 17px; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: start; }
.feature-card { min-width: 0; padding: 32px 28px 26px; border: 1px solid var(--line); border-radius: 30px; background: rgba(250,247,255,.6); box-shadow: 0 12px 40px rgba(78, 43, 150, 0.06); }
.feature-card-lift { margin-top: 38px; }
.card-number { width: 44px; height: 44px; display: grid; place-items: center; color: var(--violet); background: var(--violet-soft); border-radius: 50%; font-size: 13px; font-weight: 700; }
.feature-card h3 { margin: 21px 0 12px; font-size: 25px; line-height: 1.3; letter-spacing: -0.6px; }
.feature-card > p:not(.hand-note) { min-height: 83px; margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.feature-card > .hand-note { margin: 22px 8px 0 auto; width: max-content; text-align: center; }
.feature-demo { height: 246px; margin-top: 24px; overflow: hidden; border: 1px solid rgba(82, 54, 142, 0.1); border-radius: 23px; background: white; box-shadow: 0 14px 35px rgba(66, 38, 123, 0.09); }
.waveform-demo { padding: 22px; }
.demo-label { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; }
.demo-label strong { font-size: 13px; }
.demo-label b { color: var(--ink-soft); font-size: 9px; font-weight: 400; }
.round-control { width: 34px; height: 34px; display: grid; place-items: center; color: white; background: var(--violet); border-radius: 50%; font-size: 11px; }
.wave-bars { height: 78px; display: flex; align-items: center; justify-content: center; gap: 4px; }
.wave-bars i { width: 3px; height: 12px; background: #936fff; border-radius: 4px; }
.wave-bars i:nth-child(3n) { height: 32px; }
.wave-bars i:nth-child(4n) { height: 48px; }
.wave-bars i:nth-child(5n) { height: 22px; }
.result-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 13px; border-radius: 16px; background: #faf7ff; }
.result-row > span { width: 34px; height: 34px; display: grid; place-items: center; color: var(--violet); background: #ece5ff; border-radius: 12px; }
.result-row small, .result-row strong { display: block; }
.result-row small { color: var(--ink-soft); font-size: 9px; }
.result-row strong { margin-top: 2px; font-size: 15px; }
.result-row b { color: var(--violet); font-size: 22px; }
.event-demo { position: relative; background: #faf7ff; }
.event-demo img { width: 100%; transform: translateY(-120px); }
.event-demo::after { content: "真实应用界面"; position: absolute; right: 12px; bottom: 10px; padding: 6px 9px; color: #62557e; background: rgba(255,255,255,.9); border-radius: 10px; font-size: 9px; }
.chart-demo { padding: 22px 20px 16px; }
.chart-head { display: flex; align-items: center; justify-content: space-between; font-size: 11px; font-weight: 700; }
.chart-head b { padding: 5px 8px; color: var(--violet); background: var(--violet-soft); border-radius: 9px; font-size: 8px; }
.chart-bars { height: 145px; display: flex; align-items: flex-end; justify-content: space-around; gap: 8px; padding-top: 20px; border-bottom: 1px solid #eee8fa; }
.chart-bars i { width: 22px; height: var(--h); border-radius: 7px 7px 3px 3px; background: linear-gradient(#bda8ff, #e3d9ff); }
.chart-bars i.active { background: linear-gradient(#764cff, #9a7aff); box-shadow: 0 7px 16px rgba(112,71,255,.24); }
.chart-days { display: flex; justify-content: space-around; padding-top: 10px; color: #8a809e; font-size: 7px; }

.journey-section { background: #f6f1ff; overflow: hidden; }
.journey-grid { display: grid; grid-template-columns: 0.86fr 1.14fr; align-items: center; gap: 90px; }
.journey-copy > p { max-width: 530px; }
.check-list { list-style: none; padding: 0; margin: 30px 0; display: grid; gap: 15px; color: #55476f; }
.check-list li { display: flex; align-items: center; gap: 12px; }
.check-list span { width: 24px; height: 24px; display: grid; place-items: center; flex: 0 0 auto; color: white; background: var(--violet); border-radius: 50%; font-size: 12px; }
.text-link { display: inline-flex; align-items: center; gap: 9px; color: var(--violet); font-weight: 700; }
.text-link span { transition: transform 180ms ease; }
.text-link:hover span { transform: translateX(4px); }
.screen-gallery { height: 630px; position: relative; }
.screen-gallery::before { content: ""; position: absolute; width: 500px; height: 500px; inset: 70px -40px auto auto; border-radius: 50%; background: radial-gradient(circle, #e3d7ff, rgba(227,215,255,0)); }
.screen-card { position: absolute; width: 235px; padding: 8px; border-radius: 38px; background: linear-gradient(145deg, #554967, #17111f); box-shadow: 0 28px 60px rgba(47, 26, 98, 0.2); overflow: hidden; }
.screen-card img { border-radius: 31px; }
.screen-back { top: 40px; left: 18px; transform: rotate(-10deg) scale(.89); opacity: .8; }
.screen-middle { top: 18px; right: 15px; transform: rotate(8deg) scale(.9); opacity: .86; }
.screen-front { left: 50%; top: 8px; z-index: 2; transform: translateX(-50%); }
.gallery-bear { position: absolute; z-index: 4; width: 245px; right: -10px; bottom: -20px; filter: drop-shadow(0 25px 28px rgba(65, 35, 140, .15)); }

.privacy-section { position: relative; overflow: hidden; padding-bottom: 160px; color: white; background: radial-gradient(circle at 78% 52%, #463276, transparent 33%), linear-gradient(135deg, #211a34, #33214f 55%, #201730); }
.privacy-section::before { content: ""; position: absolute; width: 600px; height: 600px; left: -240px; bottom: -270px; border: 1px solid rgba(255,255,255,.05); border-radius: 50%; box-shadow: 0 0 0 80px rgba(255,255,255,.015), 0 0 0 160px rgba(255,255,255,.01); }
.privacy-stars { position: absolute; right: 5%; top: 70px; color: rgba(255, 217, 90, .75); letter-spacing: 12px; }
.privacy-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 80px; position: relative; z-index: 2; }
.section-kicker-light { color: #ac92ff; }
.privacy-copy h2 { font-size: clamp(44px, 5vw, 66px); }
.privacy-copy > p { max-width: 660px; color: #d4cce3; font-size: 17px; line-height: 1.85; }
.privacy-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.privacy-points > div { min-width: 0; }
.privacy-points span { width: 48px; height: 48px; display: grid; place-items: center; color: white; border: 1px solid rgba(255,255,255,.2); border-radius: 16px; background: rgba(132, 96, 255, .34); }
.privacy-points strong, .privacy-points small { display: block; }
.privacy-points strong { margin-top: 14px; font-size: 14px; }
.privacy-points small { margin-top: 5px; color: #bcb3ca; font-size: 10px; line-height: 1.5; }
.privacy-art { min-height: 480px; position: relative; display: grid; place-items: center; }
.privacy-art::before { content: ""; position: absolute; width: 390px; height: 390px; border-radius: 50%; background: rgba(118, 78, 230, .17); box-shadow: 0 0 80px rgba(132, 91, 255, .18); }
.privacy-art img { position: relative; z-index: 2; width: 390px; filter: drop-shadow(0 30px 35px rgba(0,0,0,.25)); }
.shield { position: absolute; z-index: 3; right: 35px; bottom: 40px; width: 125px; height: 138px; }
.shield svg { width: 100%; height: 100%; }
.shield svg > path:first-child { fill: #7047ff; stroke: #a990ff; stroke-width: 3; }
.shield rect { fill: #f6f1ff; }
.shield svg > path:last-child { fill: none; stroke: #f6f1ff; stroke-width: 7; stroke-linecap: round; }
.privacy-art .hand-note { position: absolute; right: -10px; top: 65px; color: #c7b8f7; }
.wave-divider-light path { fill: var(--lavender-white); }

.cta-section { padding-top: 70px; background: var(--lavender-white); }
.cta-shell { min-height: 420px; position: relative; display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; gap: 40px; padding: 55px 90px; overflow: hidden; border: 1px solid rgba(112,71,255,.1); border-radius: 44px; background: radial-gradient(circle at 4% 100%, #e9e0ff, transparent 35%), linear-gradient(135deg, #fff 0%, #f5efff 100%); box-shadow: var(--shadow); }
.cta-shell::before { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -100px; border-radius: 50%; background: rgba(112,71,255,.08); }
.cta-shell > img { align-self: end; width: 310px; margin: 0 auto -95px -30px; filter: drop-shadow(0 24px 30px rgba(65,35,140,.12)); }
.cta-copy { position: relative; z-index: 2; text-align: center; }
.cta-copy h2 { font-size: clamp(36px, 4vw, 52px); }
.cta-copy p { margin: 0 auto 28px; color: var(--ink-soft); font-size: 16px; }
.cta-copy small { display: block; margin-top: 15px; color: #9187a4; font-size: 10px; }
.cta-star { position: absolute; color: var(--yellow); }
.cta-star-one { left: 32px; top: 42px; font-size: 28px; }
.cta-star-two { right: 65px; bottom: 45px; font-size: 18px; }

.faq-section { background: var(--lavender-white); }
.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.faq-heading { position: sticky; top: 120px; align-self: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 25px 4px; display: flex; align-items: center; justify-content: space-between; gap: 24px; list-style: none; cursor: pointer; font-size: 17px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--violet); font-size: 24px; font-weight: 400; transition: transform 180ms ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list p { max-width: 700px; margin: -4px 0 26px; padding-right: 45px; color: var(--ink-soft); font-size: 14px; line-height: 1.8; }

.site-footer { padding: 38px 0; border-top: 1px solid var(--line); background: var(--cream); }
.footer-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 28px; }
.footer-brand span span, .footer-brand small { display: block; }
.footer-brand small { margin-top: 3px; color: var(--ink-soft); font-size: 10px; font-weight: 400; letter-spacing: 0; }
.site-footer nav { display: flex; gap: 28px; color: var(--ink-soft); font-size: 12px; }
.site-footer > .shell > p { margin: 0; color: #746987; text-align: right; font-size: 11px; }
.site-footer p small { color: #9b91aa; }

.launch-dialog { width: min(480px, calc(100% - 32px)); padding: 48px; color: var(--ink); border: 1px solid rgba(112,71,255,.13); border-radius: 32px; background: #fffcf8; box-shadow: 0 30px 100px rgba(33, 17, 71, .32); text-align: center; }
.launch-dialog::backdrop { background: rgba(23, 14, 39, .56); backdrop-filter: blur(8px); }
.launch-dialog img { margin: 0 auto 20px; border-radius: 18px; box-shadow: 0 13px 28px rgba(82, 39, 205, .23); }
.launch-dialog h2 { margin: 12px 0; font-size: 30px; letter-spacing: -1px; }
.launch-dialog p { margin: 0 0 25px; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.dialog-close { position: absolute; top: 13px; right: 16px; width: 38px; height: 38px; border: 0; border-radius: 50%; color: var(--ink); background: #f3eefb; font-size: 24px; cursor: pointer; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1020px) {
  .header-cta { display: none; }
  .nav-shell { grid-template-columns: 1fr auto; }
  .site-nav { justify-self: end; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .hero h1 { font-size: 58px; }
  .phone-hero { left: 10px; }
  .hero-bear { right: -130px; }
  .feature-grid { gap: 14px; }
  .feature-card { padding-inline: 20px; }
  .journey-grid { gap: 34px; }
  .privacy-grid { gap: 30px; }
  .privacy-points { gap: 10px; }
  .cta-shell { padding-inline: 55px; }
}

@media (max-width: 780px) {
  :root { --shell: min(100% - 32px, 640px); }
  .section { padding: 84px 0; }
  .nav-shell { height: 70px; }
  .brand { font-size: 20px; }
  .brand img { width: 38px; height: 38px; }
  .menu-button { width: 44px; height: 44px; padding: 0; display: grid; align-content: center; justify-content: center; gap: 7px; border: 0; border-radius: 14px; background: rgba(255,255,255,.7); }
  .menu-button span:not(.sr-only) { width: 21px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform 180ms ease; }
  .menu-button[aria-expanded="true"] span:nth-last-child(2) { transform: translateY(4.5px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 70px 16px auto; display: grid; gap: 2px; padding: 14px; border: 1px solid rgba(112,71,255,.12); border-radius: 22px; background: rgba(255,252,248,.98); box-shadow: 0 24px 60px rgba(52,30,102,.18); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 180ms ease; }
  .site-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .site-nav a { padding: 14px 16px; border-radius: 13px; }
  .site-nav a:hover { background: var(--violet-soft); }
  .site-nav a::after { display: none; }
  .hero { padding-top: 70px; min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 70px; text-align: center; }
  .hero-copy { position: relative; z-index: 5; }
  .eyebrow { margin-inline: auto; }
  .hero h1 { margin-top: 22px; font-size: clamp(47px, 13vw, 67px); letter-spacing: -2.8px; }
  .hero-lede { margin-inline: auto; font-size: 17px; }
  .hero-actions, .trust-list { justify-content: center; }
  .hero-visual { height: 630px; margin-top: 4px; }
  .hero-moon { width: 470px; height: 470px; right: 50%; transform: translateX(50%); }
  .phone-hero { width: 282px; left: 50%; transform: translateX(-50%) rotate(-2deg); }
  .hero-bear { width: 255px; right: calc(50% - 280px); }
  .sound-card { left: calc(50% - 250px); }
  .note-one { right: calc(50% - 280px); }
  .feature-grid { grid-template-columns: 1fr; max-width: 520px; margin-inline: auto; }
  .feature-card-lift { margin-top: 0; }
  .feature-card > p:not(.hand-note) { min-height: 0; }
  .feature-demo { height: 290px; }
  .event-demo img { transform: translateY(-100px); }
  .journey-grid { grid-template-columns: 1fr; }
  .journey-copy { text-align: center; }
  .journey-copy > p { margin-inline: auto; }
  .check-list { width: max-content; max-width: 100%; margin-inline: auto; text-align: left; }
  .screen-gallery { height: 610px; }
  .privacy-grid { grid-template-columns: 1fr; text-align: center; }
  .privacy-copy > p { margin-inline: auto; }
  .privacy-points { max-width: 600px; margin-inline: auto; }
  .privacy-points span { margin-inline: auto; }
  .privacy-art { min-height: 390px; }
  .privacy-art img { width: 330px; }
  .shield { right: calc(50% - 210px); }
  .privacy-art .hand-note { right: calc(50% - 250px); }
  .cta-shell { min-height: 590px; grid-template-columns: 1fr; padding: 60px 28px 0; }
  .cta-shell > img { grid-row: 2; width: 260px; margin: 0 auto -75px; }
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .faq-heading { position: static; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .site-footer > .shell > p { text-align: center; }
}

@media (max-width: 520px) {
  .hero-grid { padding-top: 50px; }
  .hero h1 { font-size: 47px; line-height: 1.12; }
  .hero-lede { font-size: 16px; }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  .trust-list { gap: 12px 16px; font-size: 12px; }
  .hero-visual { width: calc(100% + 32px); height: 570px; margin-left: -16px; }
  .hero-moon { width: 400px; height: 400px; top: 68px; }
  .phone-hero { width: 246px; }
  .phone { border-radius: 43px; padding: 9px; }
  .phone-screen { border-radius: 35px; }
  .phone-speaker { top: 14px; width: 74px; height: 20px; }
  .hero-bear { width: 220px; right: -60px; bottom: 15px; }
  .sound-card { width: 255px; left: 0; bottom: 54px; padding: 11px; }
  .tiny-wave { display: none; }
  .note-one { display: none; }
  .section-heading h2, .journey-copy h2, .privacy-copy h2, .cta-copy h2, .faq-heading h2 { font-size: 36px; letter-spacing: -1.5px; }
  .section-heading { margin-bottom: 38px; }
  .feature-card { padding: 26px 20px; }
  .feature-demo { height: 245px; }
  .event-demo img { transform: translateY(-95px); }
  .screen-gallery { height: 475px; margin-inline: -14px; }
  .screen-card { width: 180px; border-radius: 30px; padding: 6px; }
  .screen-card img { border-radius: 24px; }
  .screen-back { left: 0; }
  .screen-middle { right: 0; }
  .gallery-bear { width: 190px; right: -15px; }
  .privacy-section { padding-bottom: 130px; }
  .privacy-points { grid-template-columns: 1fr; gap: 24px; }
  .privacy-points > div { display: grid; grid-template-columns: auto 1fr; column-gap: 14px; text-align: left; }
  .privacy-points span { grid-row: 1 / 3; margin: 0; }
  .privacy-points strong { margin-top: 3px; }
  .privacy-points small { margin-top: 0; }
  .privacy-art { min-height: 340px; }
  .privacy-art img { width: 280px; }
  .shield { width: 90px; right: 0; bottom: 25px; }
  .privacy-art .hand-note { right: 0; top: 40px; }
  .cta-shell { width: calc(100% - 24px); min-height: 560px; border-radius: 32px; }
  .faq-list summary { font-size: 15px; }
  .launch-dialog { padding: 42px 24px 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}