:root {
  color-scheme: light;
  --ink: #00273d;
  --ink-soft: #334b59;
  --paper: #ffffff;
  --canvas: #f4f8fb;
  --line: #dbe5eb;
  --orange: #ff7a2f;
  --orange-dark: #9d4400;
  --orange-soft: #fff0e7;
  --blue: #0875c9;
  --blue-soft: #e7f3ff;
  --green: #187d52;
  --green-soft: #e4f6eb;
  --yellow-soft: #fff3be;
  --red: #a52722;
  --red-soft: #ffe3e0;
  --shadow: 0 24px 70px rgba(0, 39, 61, .10);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.6; }
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }
.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 { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 14px; background: var(--ink); color: white; }
.skip:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 10px max(24px, calc((100vw - 1240px) / 2));
  background: rgba(255, 255, 255, .88);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: min-height .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled { min-height: 62px; border-color: var(--line); box-shadow: 0 8px 30px rgba(0, 39, 61, .06); }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 850; text-decoration: none; }
.brand-mark { display: grid; width: 42px; height: 42px; flex: 0 0 42px; place-items: center; color: white; background: var(--orange); border-radius: 12px; font-size: 13px; font-weight: 950; line-height: 1; }
.brand > span:not(.brand-mark) { display: flex; flex-direction: column; font-size: 18px; line-height: 1.2; }
.brand small { margin-top: 3px; color: var(--ink-soft); font-size: 10px; font-weight: 650; }
nav { display: flex; align-items: center; gap: 26px; }
nav a, .footer-links a { color: var(--ink-soft); font-size: 14px; font-weight: 650; text-decoration: none; }
nav a { position: relative; padding: 8px 0; }
nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 4px; height: 2px; background: var(--orange); transition: right .2s ease; }
nav a:hover::after, nav a:focus-visible::after { right: 0; }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(8, 117, 201, .35); outline-offset: 3px; }

.hero {
  min-height: calc(100svh - 112px);
  padding: 28px max(24px, calc((100vw - 1240px) / 2)) 24px;
  overflow: hidden;
  background: #f1f6fb;
}
.hero-copy { max-width: 840px; margin: 0 auto 20px; text-align: center; }
.eyebrow { margin: 0 0 9px; color: var(--orange-dark); font-size: 13px; font-weight: 800; }
.hero-copy .eyebrow span { display: inline-block; width: 7px; height: 7px; margin-right: 7px; background: var(--orange); border-radius: 50%; }
.hero h1 { margin: 0; font-size: 64px; line-height: 1.04; font-weight: 900; letter-spacing: 0; }
.hero-copy > p:not(.eyebrow) { margin: 15px auto 20px; color: var(--ink-soft); font-size: 21px; font-weight: 600; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 22px; }
.primary-link { display: inline-flex; min-height: 48px; align-items: center; gap: 18px; padding: 0 22px; background: var(--orange); color: white; font-weight: 800; text-decoration: none; border-radius: 8px; transition: transform .2s ease, background .2s ease; }
.primary-link:hover { background: #e9641d; transform: translateY(-2px); }
.text-link { color: var(--ink); font-size: 14px; font-weight: 750; text-underline-offset: 4px; }

.assistant-demo {
  position: relative;
  width: min(1080px, 100%);
  margin: 0 auto;
  overflow: hidden;
  color: white;
  background: #08283b;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 28px;
  box-shadow: 0 30px 90px rgba(0, 39, 61, .18);
}
.demo-topbar { display: flex; min-height: 64px; align-items: center; justify-content: space-between; padding: 10px 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
.demo-identity { display: flex; align-items: center; gap: 11px; }
.demo-identity .brand-mark { width: 39px; height: 39px; flex-basis: 39px; border-radius: 11px; }
.demo-identity > span:not(.brand-mark) { display: flex; flex-direction: column; }
.demo-identity strong { font-size: 15px; }
.demo-identity small { color: #aac0cb; font-size: 11px; }
.demo-status { display: inline-flex; align-items: center; gap: 7px; color: #c6dfd2; font-size: 12px; font-weight: 750; }
.demo-status i { width: 8px; height: 8px; background: #65d69a; border-radius: 50%; box-shadow: 0 0 0 5px rgba(101,214,154,.12); }
.demo-body { display: grid; grid-template-columns: .9fr 1.1fr; gap: 14px; padding: 15px; }
.voice-source { display: grid; align-content: center; min-height: 190px; padding: 22px; background: #123c52; border-radius: 18px; }
.voice-source p { margin: 17px 0 8px; color: white; font-size: 17px; font-weight: 700; line-height: 1.65; }
.voice-source > span { color: #95afbd; font-size: 11px; }
.waveform { display: flex; height: 45px; align-items: center; gap: 5px; }
.waveform i { display: block; width: 5px; height: 24px; background: #ff9b62; border-radius: 8px; transform-origin: center; }
.waveform i:nth-child(3n + 1) { height: 14px; }
.waveform i:nth-child(3n + 2) { height: 34px; }
.waveform i:nth-child(4n) { height: 42px; }
.is-playing .waveform i { animation: voiceBar .58s ease-in-out 6 alternate; }
.is-playing .waveform i:nth-child(2n) { animation-delay: .08s; }
.is-playing .waveform i:nth-child(3n) { animation-delay: .16s; }
.understanding { display: grid; align-content: center; gap: 7px; }
.understanding-title { margin: 0 0 2px; color: #b8ccd6; font-size: 12px; font-weight: 750; }
.record-result { display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 10px; min-height: 57px; padding: 8px 11px; color: var(--ink); background: white; border-radius: 12px; }
.result-mark { display: grid; width: 32px; height: 32px; place-items: center; color: var(--orange-dark); background: var(--orange-soft); border-radius: 9px; font-size: 10px; font-weight: 900; }
.record-result.blue .result-mark { color: var(--blue); background: var(--blue-soft); }
.record-result.green .result-mark { color: var(--green); background: var(--green-soft); }
.record-result > span:nth-child(2) { display: flex; min-width: 0; flex-direction: column; }
.record-result strong { font-size: 13px; }
.record-result small { color: var(--ink-soft); font-size: 11px; }
.record-result b { color: var(--green); font-size: 10px; }
.is-playing [data-demo-result] { opacity: 0; animation: resultIn .45s ease forwards; }
.is-playing [data-demo-result]:nth-of-type(2) { animation-delay: .45s; }
.is-playing [data-demo-result]:nth-of-type(3) { animation-delay: .85s; }
.is-playing [data-demo-result]:nth-of-type(4) { animation-delay: 1.25s; }
.demo-reply { display: flex; min-height: 60px; align-items: center; gap: 11px; margin: 0 15px 12px; padding: 9px 64px 9px 12px; color: var(--ink); background: #eaf7ef; border-radius: 14px; }
.reply-avatar { display: grid; width: 34px; height: 34px; flex: 0 0 34px; place-items: center; color: white; background: var(--green); border-radius: 10px; font-size: 10px; font-weight: 900; }
.demo-reply p { margin: 0; font-size: 12px; font-weight: 700; }
.is-playing [data-demo-reply] { opacity: 0; animation: resultIn .45s ease 1.8s forwards; }
.replay-button { position: absolute; right: 24px; bottom: 27px; display: grid; width: 38px; height: 38px; place-items: center; padding: 0; color: white; background: var(--orange); border: 0; border-radius: 50%; cursor: pointer; transition: transform .2s ease, background .2s ease; }
.replay-button:hover { background: #e9641d; transform: rotate(-20deg) scale(1.06); }
.replay-button span { font-size: 21px; line-height: 1; }
.launch-note { margin: 8px 0 0; color: #647987; font-size: 11px; font-weight: 650; text-align: center; }

.promise { display: grid; grid-template-columns: repeat(3, 1fr); padding: 0 max(24px, calc((100vw - 1240px) / 2)); background: white; border-bottom: 1px solid var(--line); }
.promise div { display: flex; min-height: 104px; align-items: center; gap: 14px; padding: 22px 28px; border-left: 1px solid var(--line); }
.promise div:last-child { border-right: 1px solid var(--line); }
.promise span { color: var(--orange); font-size: 12px; font-weight: 850; }
.promise strong { font-size: 16px; }

.product-stage { padding: 100px max(24px, calc((100vw - 1240px) / 2)); background: white; }
.section-heading { max-width: 800px; }
.section-heading p, .family-band-copy > p { margin: 0 0 8px; color: var(--orange-dark); font-size: 13px; font-weight: 850; }
.section-heading h2, .family-band h2, .trust-band h2, .closing-band h2, .legal-head h1 { margin: 0; font-size: 46px; line-height: 1.2; letter-spacing: 0; }
.section-heading > span { display: block; max-width: 700px; margin-top: 17px; color: var(--ink-soft); font-size: 16px; }
.product-tabs { display: inline-grid; grid-template-columns: repeat(4, 1fr); margin: 38px 0 24px; padding: 5px; background: var(--canvas); border: 1px solid var(--line); border-radius: 12px; }
.product-tabs button { min-width: 96px; min-height: 42px; padding: 0 18px; background: transparent; border: 0; border-radius: 8px; font-weight: 800; cursor: pointer; transition: color .2s ease, background .2s ease, transform .2s ease; }
.product-tabs button:hover { transform: translateY(-1px); }
.product-tabs button[aria-selected="true"] { color: white; background: var(--ink); }
.product-panels { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-panel { display: grid; grid-template-columns: minmax(0, .92fr) minmax(380px, 1.08fr); align-items: center; gap: 74px; min-height: 680px; padding: 54px 0; }
.product-panel.is-active { animation: panelIn .42s ease; }
.panel-copy > span { color: var(--orange-dark); font-size: 12px; font-weight: 850; }
.panel-copy h3 { max-width: 580px; margin: 12px 0 18px; font-size: 36px; line-height: 1.28; letter-spacing: 0; }
.panel-copy > p { max-width: 600px; margin: 0; color: var(--ink-soft); font-size: 17px; }
.panel-copy ul { display: grid; gap: 13px; margin: 26px 0 0; padding: 0; list-style: none; }
.panel-copy li { position: relative; padding-left: 24px; color: var(--ink); font-size: 14px; font-weight: 700; }
.panel-copy li::before { content: ""; position: absolute; left: 0; top: 9px; width: 10px; height: 3px; background: var(--orange); border-radius: 4px; }

.phone-tool { position: relative; justify-self: center; width: min(390px, 100%); min-height: 610px; overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 34px; box-shadow: var(--shadow); }
.phone-tool::before { content: ""; position: absolute; z-index: 4; top: 8px; left: 50%; width: 68px; height: 5px; background: rgba(0,39,61,.16); border-radius: 8px; transform: translateX(-50%); }
.phone-head { display: flex; min-height: 75px; align-items: center; gap: 10px; padding: 22px 22px 12px; background: white; }
.phone-head .brand-mark { width: 38px; height: 38px; flex-basis: 38px; border-radius: 12px; font-size: 11px; }
.phone-head > span:not(.brand-mark) { display: flex; flex: 1; flex-direction: column; }
.phone-head strong { font-size: 15px; }
.phone-head small { color: var(--ink-soft); font-size: 10px; }
.phone-head b { color: var(--ink-soft); }
.chat-day { margin: 25px 0 18px; color: #82929c; font-size: 11px; text-align: center; }
.chat-user { width: 74%; margin-left: auto; margin-right: 20px; padding: 14px 16px; color: white; background: var(--orange); border-radius: 18px 18px 5px 18px; font-size: 13px; font-weight: 650; }
.chat-ai { display: flex; width: 82%; align-items: flex-start; gap: 9px; margin: 20px 20px 0; }
.chat-ai > span { display: grid; width: 31px; height: 31px; flex: 0 0 31px; place-items: center; color: white; background: var(--ink); border-radius: 9px; font-size: 9px; font-weight: 900; }
.chat-ai p { margin: 0; padding: 13px 14px; background: var(--canvas); border-radius: 5px 18px 18px; font-size: 12px; font-weight: 650; }
.assistant-actions { display: flex; gap: 7px; margin: 14px 0 0 60px; }
.assistant-actions span { padding: 5px 9px; color: var(--orange-dark); background: var(--orange-soft); border-radius: 6px; font-size: 9px; font-weight: 800; }
.composer { position: absolute; right: 16px; bottom: 20px; left: 16px; display: grid; grid-template-columns: 34px 1fr 24px 38px; min-height: 58px; align-items: center; gap: 4px; padding: 8px; background: var(--canvas); border: 1px solid var(--line); border-radius: 20px; }
.composer button { display: grid; width: 34px; height: 34px; place-items: center; padding: 0; background: white; border: 0; border-radius: 50%; cursor: pointer; }
.composer button:last-child { color: white; background: var(--orange); font-size: 20px; }
.composer span { overflow: hidden; color: #6e7f89; font-size: 10px; white-space: nowrap; text-overflow: ellipsis; }
.composer i { width: 8px; height: 20px; justify-self: center; background: var(--ink-soft); border-radius: 8px; box-shadow: 5px 0 0 -3px white; }

.screenshot-tool { height: 650px; background: #f5f8ff; }
.screenshot-tool .overlay { position: absolute; z-index: 3; top: 0; right: 0; left: 0; border-bottom: 1px solid var(--line); }
.screenshot-tool > img { width: 100%; max-width: none; margin-top: 0; }
.dashboard-tool { padding-bottom: 24px; background: #fbfdff; }
.dashboard-summary { margin: 0 18px 12px; padding: 14px 16px; color: var(--ink); background: var(--yellow-soft); border-radius: 14px; }
.dashboard-summary span, .dashboard-summary small { display: block; font-size: 10px; }
.dashboard-summary strong { display: block; margin: 2px 0; font-size: 16px; }
.dashboard-summary small { color: var(--ink-soft); }
.metric-row { display: flex; align-items: center; justify-content: space-between; margin: 7px 18px; padding: 11px 14px; background: var(--canvas); border-radius: 12px; }
.metric-row span { display: flex; flex-direction: column; }
.metric-row small { color: var(--ink-soft); font-size: 9px; }
.metric-row strong { font-size: 14px; }
.metric-row > b { color: var(--green); font-size: 9px; }
.trend-card { margin: 12px 18px; padding: 14px 14px 2px; background: white; border: 1px solid var(--line); border-radius: 14px; }
.trend-card > div { display: flex; align-items: center; justify-content: space-between; }
.trend-card span { display: flex; flex-direction: column; }
.trend-card strong { font-size: 13px; }
.trend-card small { color: var(--ink-soft); font-size: 9px; }
.trend-card > div > b { color: var(--orange-dark); font-size: 18px; }
.trend-card svg { width: 100%; height: 110px; overflow: visible; }
.grid-line { fill: none; stroke: #dbeaf2; stroke-width: 1; }
.trend-area { fill: #e8f4ff; }
.trend-line { fill: none; stroke: var(--orange); stroke-width: 6; stroke-linecap: round; stroke-dasharray: 500; stroke-dashoffset: 0; }
.is-active .trend-line { animation: drawLine 1.3s ease both; }
.timeline-row { display: flex; align-items: center; gap: 10px; margin: 11px 22px; }
.timeline-row i { width: 10px; height: 10px; flex: 0 0 10px; background: var(--orange); border-radius: 50%; }
.timeline-row.blue-dot i { background: var(--blue); }
.timeline-row span { display: flex; flex-direction: column; }
.timeline-row strong { font-size: 11px; }
.timeline-row small { color: var(--ink-soft); font-size: 9px; }

.family-tool { padding-bottom: 22px; background: #fff; }
.baby-profile { display: flex; align-items: center; gap: 12px; margin: 5px 20px 24px; padding: 15px; background: var(--orange-soft); border-radius: 16px; }
.baby-photo { display: grid; width: 48px; height: 48px; place-items: center; color: white; background: var(--orange); border-radius: 50%; font-weight: 900; }
.baby-profile div { display: flex; flex: 1; flex-direction: column; }
.baby-profile strong { font-size: 14px; }
.baby-profile small { color: var(--ink-soft); font-size: 9px; }
.baby-profile b { color: var(--orange-dark); font-size: 9px; }
.family-label { margin: 0 22px 8px; font-size: 12px; font-weight: 850; }
.member { display: flex; align-items: center; gap: 11px; min-height: 66px; margin: 0 20px; border-bottom: 1px solid var(--line); }
.member > span, .avatar { display: grid; width: 38px; height: 38px; flex: 0 0 38px; place-items: center; color: var(--orange-dark); background: var(--orange-soft); border-radius: 50%; font-size: 11px; font-weight: 850; }
.member p { display: flex; flex: 1; flex-direction: column; margin: 0; }
.member strong { font-size: 12px; }
.member small { color: var(--ink-soft); font-size: 9px; }
.member b { color: var(--ink-soft); font-size: 9px; }
.blue-avatar { color: var(--blue) !important; background: var(--blue-soft) !important; }
.green-avatar { color: var(--green) !important; background: var(--green-soft) !important; }
.family-activity { margin: 22px 20px 0; padding: 14px; color: white; background: var(--ink); border-radius: 14px; }
.family-activity strong, .family-activity span { display: block; }
.family-activity strong { font-size: 12px; }
.family-activity span { color: #bcd0db; font-size: 9px; }

.family-band { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; padding: 95px max(24px, calc((100vw - 1240px) / 2)); background: var(--yellow-soft); }
.family-band-copy > span { display: block; max-width: 570px; margin-top: 20px; color: var(--ink-soft); font-size: 16px; }
.family-live { position: relative; padding: 18px 24px; background: white; border: 1px solid rgba(0,39,61,.12); border-radius: 24px; box-shadow: 0 22px 60px rgba(94, 78, 0, .10); }
.family-live > div:not(.sync-line) { display: flex; min-height: 78px; align-items: center; gap: 13px; border-bottom: 1px solid var(--line); }
.family-live > div:nth-child(3) { border-bottom: 0; }
.family-live p { display: flex; flex: 1; flex-direction: column; margin: 0; }
.family-live strong { font-size: 13px; }
.family-live small { color: var(--ink-soft); font-size: 10px; }
.family-live b { color: #788992; font-size: 9px; }
.orange-avatar { color: var(--orange-dark); background: var(--orange-soft); }
.sync-line { position: absolute; right: 22px; bottom: -18px; display: flex; align-items: center; gap: 7px; padding: 8px 12px; color: white; background: var(--green); border-radius: 8px; font-size: 10px; font-weight: 750; }
.sync-line i { width: 6px; height: 6px; background: white; border-radius: 50%; }

.trust-band { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; padding: 100px max(24px, calc((100vw - 1240px) / 2)); color: white; background: var(--ink); }
.trust-heading .eyebrow { color: #ffb58c; }
.trust-principles { display: grid; }
.trust-principles > div { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 22px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.trust-principles > div:first-child { padding-top: 0; }
.trust-principles > div:last-child { border-bottom: 0; }
.trust-principles > div > span { color: #ffb58c; font-size: 11px; font-weight: 900; }
.trust-principles p { display: flex; flex-direction: column; margin: 0; }
.trust-principles strong { font-size: 15px; }
.trust-principles small { margin-top: 5px; color: #bed0d9; font-size: 12px; }

.closing-band { padding: 86px 24px; text-align: center; background: #eef6ff; }
.closing-mark { width: 72px; height: 72px; margin: 0 auto 16px; border-radius: 18px; font-size: 20px; box-shadow: 0 15px 30px rgba(0,39,61,.12); }
.closing-band p { margin: 0 0 7px; color: var(--orange-dark); font-size: 13px; font-weight: 850; }
.closing-band > span:not(.brand-mark) { display: block; margin-top: 15px; color: var(--ink-soft); font-size: 13px; }

.legal-head { padding: 96px max(24px, calc((100vw - 920px) / 2)) 58px; background: #edf5ff; border-bottom: 1px solid var(--line); }
.legal-head .eyebrow { color: var(--orange-dark); }
.legal-head > p:last-child { max-width: 760px; color: var(--ink-soft); font-size: 16px; }
.legal-body { width: min(920px, calc(100% - 48px)); margin: 0 auto; padding: 50px 0 80px; }
.legal-body section { padding: 26px 0; border-bottom: 1px solid var(--line); }
.legal-body h2, .support-grid h2 { margin: 0 0 10px; font-size: 21px; letter-spacing: 0; }
.legal-body p { margin: 0; color: var(--ink-soft); }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); width: min(920px, calc(100% - 48px)); margin: 48px auto 8px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.support-grid div { min-width: 0; padding: 26px; background: white; border-right: 1px solid var(--line); }
.support-grid div:last-child { border-right: 0; }
.support-grid p { overflow-wrap: anywhere; color: var(--ink-soft); }

footer { display: grid; grid-template-columns: 1fr auto; gap: 28px; padding: 44px max(24px, calc((100vw - 1240px) / 2)); color: var(--ink-soft); background: white; border-top: 1px solid var(--line); }
footer > div:first-child { display: flex; flex-direction: column; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.footer-links a:hover, .footer-links a:focus-visible { color: var(--orange-dark); }
.records { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 18px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 12px; }

.reveal { opacity: 1; transform: none; }
.js .reveal:not(.is-visible) { opacity: 0; transform: translateY(18px); }
.reveal.is-visible { transition: opacity .7s ease, transform .7s ease; }

@keyframes voiceBar { to { transform: scaleY(.35); opacity: .6; } }
@keyframes resultIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes panelIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes drawLine { from { stroke-dashoffset: 500; } to { stroke-dashoffset: 0; } }

@media (max-width: 900px) {
  nav { gap: 16px; }
  nav a:nth-child(2) { display: none; }
  .hero { padding-top: 30px; }
  .hero h1 { font-size: 60px; }
  .demo-body { grid-template-columns: 1fr; }
  .voice-source { min-height: 150px; }
  .product-panel { grid-template-columns: 1fr; gap: 38px; min-height: 0; }
  .panel-copy { max-width: 700px; }
  .family-band, .trust-band { grid-template-columns: 1fr; gap: 45px; }
}

@media (max-width: 640px) {
  .site-header { min-height: 62px; padding: 8px 18px; }
  .brand > .brand-mark { width: 36px; height: 36px; flex-basis: 36px; border-radius: 10px; font-size: 11px; }
  .brand span { font-size: 16px; }
  .brand small { display: none; }
  nav { gap: 15px; }
  nav a { font-size: 12px; }
  nav a:nth-child(3) { display: none; }
  .hero { min-height: calc(100svh - 98px); padding: 28px 16px 20px; }
  .hero-copy { margin-bottom: 22px; }
  .hero h1 { font-size: 50px; }
  .hero-copy > p:not(.eyebrow) { max-width: 340px; margin: 10px auto 16px; font-size: 17px; }
  .eyebrow { font-size: 11px; }
  .hero-actions { gap: 14px; }
  .primary-link { min-height: 44px; padding: 0 16px; font-size: 13px; }
  .text-link { font-size: 12px; }
  .assistant-demo { border-radius: 20px; }
  .demo-topbar { min-height: 54px; padding: 8px 12px; }
  .demo-identity .brand-mark { width: 34px; height: 34px; flex-basis: 34px; }
  .demo-identity strong { font-size: 13px; }
  .demo-identity small { font-size: 9px; }
  .demo-status { font-size: 9px; }
  .demo-body { grid-template-columns: 1fr; gap: 8px; padding: 9px; }
  .voice-source { min-height: 92px; padding: 12px; }
  .voice-source p { margin: 8px 0 3px; font-size: 12px; }
  .waveform { height: 24px; gap: 3px; }
  .waveform i { width: 3px; height: 15px; }
  .waveform i:nth-child(3n + 1) { height: 8px; }
  .waveform i:nth-child(3n + 2) { height: 21px; }
  .waveform i:nth-child(4n) { height: 24px; }
  .understanding { grid-template-columns: 1fr; gap: 5px; }
  .understanding-title { display: none; }
  .record-result { min-height: 42px; grid-template-columns: 28px 1fr auto; padding: 5px 8px; border-radius: 9px; }
  .result-mark { width: 25px; height: 25px; border-radius: 7px; font-size: 8px; }
  .record-result strong { font-size: 11px; }
  .record-result small, .record-result b { font-size: 8px; }
  .demo-reply { min-height: 54px; margin: 0 9px 9px; padding: 8px 50px 8px 8px; border-radius: 10px; }
  .reply-avatar { width: 28px; height: 28px; flex-basis: 28px; border-radius: 8px; font-size: 8px; }
  .demo-reply p { font-size: 9px; }
  .replay-button { right: 16px; bottom: 19px; width: 30px; height: 30px; }
  .launch-note { display: none; }
  .promise { grid-template-columns: 1fr; padding: 0 18px; }
  .promise div { min-height: 65px; padding: 12px 6px; border-left: 0; border-bottom: 1px solid var(--line); }
  .promise div:last-child { border-right: 0; border-bottom: 0; }
  .promise strong { font-size: 14px; }
  .product-stage { padding: 72px 18px; }
  .section-heading h2, .family-band h2, .trust-band h2, .closing-band h2, .legal-head h1 { font-size: 34px; }
  .section-heading > span, .family-band-copy > span { font-size: 14px; }
  .product-tabs { display: grid; width: 100%; grid-template-columns: repeat(4, 1fr); margin-top: 30px; }
  .product-tabs button { min-width: 0; min-height: 40px; padding: 0 7px; font-size: 12px; }
  .product-panel { padding: 35px 0; }
  .panel-copy h3 { font-size: 27px; }
  .panel-copy > p { font-size: 15px; }
  .phone-tool { width: min(350px, 100%); min-height: 570px; border-radius: 28px; }
  .screenshot-tool { height: 590px; }
  .family-band, .trust-band { padding: 72px 20px; }
  .family-live { padding: 12px 16px; border-radius: 18px; }
  .family-live > div:not(.sync-line) { min-height: 72px; }
  .trust-principles > div { grid-template-columns: 34px 1fr; }
  .closing-band { padding: 70px 20px; }
  .legal-head { padding: 70px 24px 42px; }
  .legal-body { width: calc(100% - 40px); }
  .support-grid { grid-template-columns: 1fr; width: calc(100% - 40px); }
  .support-grid div { border-right: 0; border-bottom: 1px solid var(--line); }
  .support-grid div:last-child { border-bottom: 0; }
  footer { grid-template-columns: 1fr; padding: 36px 20px; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}