:root {
  --ink: #14212b;
  --muted: #60717d;
  --line: #dbe6eb;
  --paper: #ffffff;
  --mist: #f3f8fa;
  --cyan: #079fea;
  --cyan-deep: #0874ca;
  --mint: #46c9a1;
  --coral: #ff7b6f;
  --sun: #f5c75b;
  --navy: #102c3d;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.92);
  border-color: rgba(15,52,69,.1);
  box-shadow: 0 8px 30px rgba(26,63,82,.07);
  backdrop-filter: blur(18px);
}
.nav-shell, .section-shell {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
}
.nav-shell {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; font-size: 18px; }
.brand img { width: 38px; height: 38px; border-radius: 8px; box-shadow: 0 7px 16px rgba(0,140,219,.2); }
nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 600; }
nav a { color: #42535f; transition: color .2s ease; }
nav a:hover { color: var(--cyan-deep); }
.nav-cta { padding: 10px 16px; color: white !important; background: var(--ink); border-radius: 6px; }
.menu-button { display: none; width: 42px; height: 42px; padding: 10px; border: 0; background: transparent; }
.menu-button span { display: block; height: 2px; margin: 5px 0; background: var(--ink); }

.hero {
  position: relative;
  min-height: min(830px, 95vh);
  padding: 116px 0 54px;
  overflow: hidden;
  background: #f7fbff;
}
.hero-backdrop { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 40%; opacity: .82; }
.hero::after { content: ""; position: absolute; inset: 0; background: rgba(247,251,255,.46); }
.hero-inner {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: 72px;
}
.hero-copy { padding: 26px 0 58px; }
.beta-kicker { display: flex; align-items: center; gap: 9px; color: #36505d; font-size: 13px; font-weight: 700; }
.beta-kicker span { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 6px rgba(255,123,111,.15); }
.hero h1 { margin: 22px 0 4px; font-size: clamp(42px, 5.6vw, 76px); line-height: 1; font-weight: 820; }
.hero-lead { margin: 0; color: var(--cyan-deep); font-size: clamp(36px, 4.8vw, 65px); line-height: 1.08; font-weight: 760; }
.hero-note { max-width: 520px; margin: 26px 0 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.hero-actions { display: flex; align-items: center; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid transparent; border-radius: 6px; font-size: 15px; font-weight: 720; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: white; background: var(--cyan-deep); box-shadow: 0 12px 26px rgba(8,116,202,.2); }
.button.primary:hover { background: #0566b5; box-shadow: 0 16px 30px rgba(8,116,202,.25); }
.button.secondary { border-color: #bfd0d9; background: rgba(255,255,255,.72); }
.button.dark { color: white; background: var(--ink); }
.platform-line { display: flex; align-items: center; gap: 10px; margin-top: 25px; color: #71818b; font-size: 13px; }
.platform-line i { width: 1px; height: 13px; background: #bfcbd1; }
.apple-mark { width: 18px; height: 18px; line-height: 15px; color: var(--ink); font-size: 17px; }

.product-visual { position: relative; height: 650px; display: flex; align-items: center; justify-content: center; }
.phone {
  position: relative;
  z-index: 3;
  width: 306px;
  height: 625px;
  padding: 9px;
  border: 2px solid #172833;
  border-radius: 44px;
  background: #172833;
  box-shadow: 0 34px 70px rgba(25,84,115,.24), 0 5px 15px rgba(8,37,54,.12);
  transform: rotate(3deg);
}
.phone-screen { position: relative; height: 100%; overflow: hidden; border-radius: 34px; background: #edf4f6; }
.dynamic-island { position: absolute; z-index: 5; top: 10px; left: 50%; width: 90px; height: 25px; border-radius: 16px; background: #111b21; transform: translateX(-50%); }
.chat-head { height: 92px; padding: 41px 15px 12px; display: flex; align-items: center; gap: 9px; background: white; border-bottom: 1px solid #e3ebee; }
.chat-head .back { color: var(--cyan-deep); font-size: 29px; line-height: 1; }
.chat-head b { display: block; font-size: 14px; }
.chat-head small { display: block; margin-top: 2px; color: #6e818b; font-size: 10px; }
.more { margin-left: auto; color: #546874; font-weight: 700; }
.avatar { display: grid; flex: 0 0 auto; place-items: center; color: white; font-weight: 760; }
.chat-head .avatar { width: 33px; height: 33px; border-radius: 9px; font-size: 12px; }
.avatar-blue { background: var(--cyan-deep); }
.avatar-coral { background: var(--coral); }
.chat-day { margin: 15px auto 10px; color: #81919a; font-size: 9px; text-align: center; }
.message-row { display: flex; align-items: flex-start; gap: 7px; padding: 6px 12px; }
.message-row > .avatar { width: 28px; height: 28px; border-radius: 7px; font-size: 10px; }
.message-row .bubble { max-width: 207px; padding: 8px 10px; border-radius: 5px 11px 11px 11px; background: white; box-shadow: 0 4px 12px rgba(41,77,94,.07); }
.message-row .bubble small { color: var(--coral); font-size: 8px; }
.message-row .bubble p { margin: 2px 0 0; font-size: 10px; line-height: 1.6; }
.message-row.outgoing { justify-content: flex-end; margin-top: 5px; }
.message-row.outgoing .bubble { color: #073953; background: #a9e9fb; border-radius: 11px 5px 11px 11px; }
.message-row.outgoing .bubble span { display: block; color: #39758c; font-size: 7px; text-align: right; }
.file-bubble { width: 202px; margin: 12px 12px 0; padding: 11px; display: flex; gap: 10px; align-items: center; border-radius: 5px 11px 11px 11px; background: white; box-shadow: 0 4px 12px rgba(41,77,94,.07); }
.file-icon { display: grid; width: 34px; height: 39px; place-items: center; border-radius: 4px; color: white; background: var(--coral); font-size: 8px; font-weight: 800; }
.file-bubble p { margin: 0; font-size: 9px; }
.file-bubble b, .file-bubble small { display: block; }
.file-bubble small { margin-top: 4px; color: #85949c; }
.voice-bubble { width: 128px; margin: 12px 12px 0 auto; padding: 11px 13px; display: flex; justify-content: space-between; color: #094664; border-radius: 11px 5px 11px 11px; background: #a9e9fb; font-size: 10px; }
.composer { position: absolute; left: 0; right: 0; bottom: 0; height: 55px; padding: 9px 10px; display: flex; align-items: center; gap: 8px; background: white; border-top: 1px solid #dfe8ec; color: #52707e; }
.composer p { flex: 1; margin: 0; padding: 9px 12px; border-radius: 5px; background: #f1f5f6; color: #97a5ab; font-size: 10px; }
.composer span:last-child { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 50%; color: white; background: var(--cyan-deep); }
.floating-app-icon { position: absolute; z-index: 5; right: 70px; bottom: 48px; width: 112px; border: 7px solid rgba(255,255,255,.92); border-radius: 28px; box-shadow: 0 18px 38px rgba(12,95,145,.25); transform: rotate(-4deg); }
.ambient-card { position: absolute; z-index: 4; width: 190px; padding: 13px 15px; display: flex; align-items: center; gap: 11px; border: 1px solid rgba(135,174,193,.35); border-radius: 8px; background: rgba(255,255,255,.88); box-shadow: 0 16px 35px rgba(38,93,121,.13); backdrop-filter: blur(14px); }
.ambient-card p { margin: 0; }
.ambient-card b, .ambient-card small { display: block; }
.ambient-card b { font-size: 12px; }
.ambient-card small { margin-top: 3px; color: #71828b; font-size: 9px; }
.mini-icon { display: grid; width: 33px; height: 33px; place-items: center; border-radius: 50%; color: white; font-weight: 800; }
.mini-icon.coral { background: var(--coral); }
.mini-icon.mint { background: var(--mint); }
.card-one { left: 10px; top: 150px; }
.card-two { right: 2px; top: 245px; }
.hero-bottom { position: absolute; z-index: 3; bottom: 18px; left: 50%; display: flex; flex-direction: column; align-items: center; gap: 6px; color: #78909b; font-size: 10px; transform: translateX(-50%); }
.hero-bottom i { width: 1px; height: 24px; background: #9db0b9; }

.intro-band { padding: 110px 0; border-top: 1px solid #e2edf1; background: white; }
.intro-grid { display: grid; grid-template-columns: .45fr 1.55fr; gap: 68px; }
.eyebrow { margin: 0 0 22px; color: var(--cyan-deep); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.intro-grid h2, .section-heading h2, .privacy-copy h2, .beta-title-block h2, .support-inner h2 { margin: 0; font-size: clamp(34px, 4.6vw, 58px); line-height: 1.16; font-weight: 780; }
.intro-grid > div > p { max-width: 720px; margin: 30px 0 0; color: var(--muted); font-size: 19px; line-height: 1.9; }

.features { padding: 112px 0 126px; background: var(--mist); }
.section-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 54px; }
.section-heading h2 { max-width: 680px; font-size: clamp(33px, 4vw, 50px); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #cbdade; border-left: 1px solid #cbdade; }
.feature { position: relative; min-height: 440px; padding: 30px 34px 34px; border-right: 1px solid #cbdade; border-bottom: 1px solid #cbdade; overflow: hidden; background: rgba(255,255,255,.45); }
.feature-number { position: absolute; top: 24px; right: 28px; color: #8da0a9; font-size: 11px; font-weight: 800; }
.feature h3 { margin: 28px 0 10px; font-size: 25px; }
.feature > p { max-width: 450px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.feature-art { height: 250px; position: relative; overflow: hidden; border-radius: 6px; }
.chat-art { padding: 65px 32px; background: #e3f5fb; }
.art-bubble { width: fit-content; max-width: 82%; padding: 13px 17px; border-radius: 5px 13px 13px 13px; background: white; box-shadow: 0 8px 22px rgba(25,90,116,.1); font-size: 13px; }
.art-bubble.right { margin: 16px 0 0 auto; color: #07507a; border-radius: 13px 5px 13px 13px; background: #a7e7f8; }
.typing { position: absolute; left: 32px; bottom: 25px; display: flex; gap: 4px; }
.typing i { width: 5px; height: 5px; border-radius: 50%; background: #7fb0c2; animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; }
.typing i:nth-child(3) { animation-delay: .3s; }
.people-art { background: #fff4ef; }
.person { position: absolute; display: grid; width: 70px; height: 70px; place-items: center; border: 6px solid white; border-radius: 50%; color: white; font-size: 19px; font-weight: 800; box-shadow: 0 10px 23px rgba(57,64,67,.13); }
.p1 { left: 13%; top: 28%; background: var(--coral); }
.p2 { left: 42%; top: 12%; background: var(--cyan-deep); }
.p3 { right: 12%; top: 37%; background: var(--mint); }
.p4 { left: 39%; bottom: 12%; background: #7259c9; }
.link-lines { position: absolute; inset: 25% 20%; border: 2px dashed rgba(204,124,105,.35); border-radius: 50%; }
.call-art { display: grid; place-items: center; background: #eef0ff; }
.call-avatar { display: grid; width: 86px; height: 86px; place-items: center; border-radius: 50%; color: white; background: #7259c9; box-shadow: 0 12px 28px rgba(78,65,142,.2); font-size: 26px; font-weight: 800; }
.call-art > span { position: absolute; bottom: 28px; color: #665f8a; font-size: 12px; font-weight: 700; }
.wave { position: absolute; left: 50%; bottom: 62px; display: flex; align-items: center; gap: 5px; transform: translateX(-50%); }
.wave i { width: 4px; height: 15px; border-radius: 3px; background: #9d91e4; animation: wave 1.1s ease-in-out infinite alternate; }
.wave i:nth-child(2), .wave i:nth-child(6) { height: 25px; animation-delay: .2s; }
.wave i:nth-child(3), .wave i:nth-child(5) { height: 35px; animation-delay: .35s; }
.wave i:nth-child(4) { height: 45px; animation-delay: .5s; }
.control-art { display: flex; align-items: center; justify-content: center; gap: 22px; background: #e7f6ef; }
.shield { display: grid; width: 92px; height: 106px; place-items: center; color: white; background: var(--mint); clip-path: polygon(50% 0, 92% 18%, 86% 72%, 50% 100%, 14% 72%, 8% 18%); font-size: 34px; font-weight: 900; }
.control-art p { margin: 0; }
.control-art span, .control-art b { display: block; }
.control-art span { color: #5d8071; font-size: 12px; }
.control-art b { margin-top: 5px; color: #1d6e55; font-size: 21px; }

.privacy-band { padding: 120px 0; color: white; background: var(--navy); }
.privacy-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: center; }
.eyebrow.light { color: #7de0c1; }
.privacy-copy p:not(.eyebrow) { max-width: 520px; margin: 28px 0 24px; color: #b8cbd4; font-size: 16px; line-height: 1.85; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--cyan-deep); font-size: 14px; font-weight: 760; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }
.light-link { color: #8ce7ca; }
.privacy-points { border-top: 1px solid #315163; }
.privacy-points > div { display: grid; grid-template-columns: 48px 1fr; gap: 15px; padding: 25px 0; border-bottom: 1px solid #315163; }
.privacy-points b { color: #6a8998; font-size: 11px; }
.privacy-points p { margin: 0; }
.privacy-points strong, .privacy-points span { display: block; }
.privacy-points strong { font-size: 18px; }
.privacy-points span { margin-top: 8px; color: #a9bec8; font-size: 14px; line-height: 1.6; }

.beta-section { padding: 125px 0; }
.beta-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; }
.status-dot { display: block; width: 13px; height: 13px; margin-bottom: 26px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 8px rgba(255,123,111,.13); }
.beta-title-block .eyebrow { margin-bottom: 14px; }
.beta-details .large-copy { margin: 0 0 40px; color: #435762; font-size: 20px; line-height: 1.8; }
.beta-details dl { margin: 0; border-top: 1px solid var(--line); }
.beta-details dl div { padding: 16px 0; display: flex; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.beta-details dt { color: #71818a; font-size: 13px; }
.beta-details dd { margin: 0; font-size: 14px; font-weight: 720; text-align: right; }
.beta-actions { margin-top: 35px; display: flex; align-items: center; gap: 25px; }

.support-strip { padding: 65px 0; border-top: 1px solid var(--line); background: #f7fafb; }
.support-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.support-inner .eyebrow { margin-bottom: 12px; }
.support-inner h2 { font-size: clamp(28px, 3.8vw, 43px); }

footer { padding: 46px 0; background: white; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 44px; height: 44px; border-radius: 10px; }
.footer-brand b, .footer-brand span { display: block; }
.footer-brand b { font-size: 15px; }
.footer-brand span { margin-top: 3px; color: #7d8c94; font-size: 11px; }
.footer-links { display: flex; gap: 24px; color: #536670; font-size: 12px; }
.footer-links a:hover { color: var(--cyan-deep); }
.copyright { grid-column: 1 / -1; margin: 14px 0 0; padding-top: 22px; border-top: 1px solid #edf1f3; color: #8b989e; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }
@keyframes blink { 0%, 70%, 100% { opacity: .35; } 35% { opacity: 1; } }
@keyframes wave { from { transform: scaleY(.65); } to { transform: scaleY(1.12); } }

/* Legal and support pages */
.subpage { background: #f6fafc; }
.subpage .site-header { background: rgba(255,255,255,.94); border-bottom-color: var(--line); }
.article-hero { padding: 150px 0 68px; border-bottom: 1px solid var(--line); background: white; }
.article-hero .eyebrow { margin-bottom: 14px; }
.article-hero h1 { max-width: 780px; margin: 0; font-size: clamp(38px, 5vw, 60px); line-height: 1.14; }
.article-hero > div > p:last-child { max-width: 700px; margin: 22px 0 0; color: var(--muted); font-size: 17px; line-height: 1.8; }
.article-layout { width: min(calc(100% - 48px), 920px); margin: 0 auto; padding: 72px 0 110px; display: grid; grid-template-columns: 210px 1fr; gap: 62px; }
.article-nav { position: sticky; top: 112px; align-self: start; }
.article-nav a { display: block; padding: 9px 0; color: #687982; font-size: 13px; }
.article-nav a:hover { color: var(--cyan-deep); }
.article-body section { margin: 0 0 48px; scroll-margin-top: 110px; }
.article-body h2 { margin: 0 0 16px; font-size: 25px; }
.article-body h3 { margin: 28px 0 10px; font-size: 17px; }
.article-body p, .article-body li { color: #4f626d; font-size: 15px; line-height: 1.85; }
.article-body ul, .article-body ol { padding-left: 21px; }
.article-body li { margin: 7px 0; }
.article-body a { color: var(--cyan-deep); text-decoration: underline; text-underline-offset: 3px; }
.notice { padding: 18px 20px; border-left: 4px solid var(--cyan); border-radius: 0 6px 6px 0; background: #eaf7fd; color: #335565 !important; }
.support-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 25px; }
.support-option { padding: 22px; border: 1px solid var(--line); border-radius: 6px; background: white; }
.support-option b, .support-option span { display: block; }
.support-option b { font-size: 16px; }
.support-option span { margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.6; }

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr 1fr; gap: 24px; }
  .product-visual { transform: scale(.88); }
  .card-one { left: -35px; }
  .card-two { right: -28px; }
  .floating-app-icon { right: 20px; }
  .privacy-grid, .beta-layout { gap: 55px; }
}

@media (max-width: 760px) {
  .nav-shell, .section-shell, .hero-inner { width: min(calc(100% - 34px), var(--max)); }
  .nav-shell { height: 68px; }
  .brand img { width: 34px; height: 34px; }
  .menu-button { display: block; }
  nav { position: absolute; top: 68px; left: 0; width: 100%; padding: 18px; display: none; align-items: stretch; flex-direction: column; gap: 0; border-top: 1px solid var(--line); background: white; box-shadow: 0 18px 28px rgba(28,58,73,.1); }
  nav.open { display: flex; }
  nav a { padding: 13px 8px; }
  .nav-cta { margin-top: 5px; text-align: center; }
  .hero { min-height: auto; padding: 100px 0 44px; }
  .hero::after { background: rgba(247,251,255,.68); }
  .hero-inner { grid-template-columns: 1fr; gap: 0; }
  .hero-copy { padding: 0; text-align: center; }
  .beta-kicker, .hero-actions, .platform-line { justify-content: center; }
  .hero h1 { margin-top: 18px; }
  .hero-note { margin: 20px auto 0; font-size: 16px; }
  .hero-actions { margin-top: 25px; }
  .product-visual { height: 580px; margin-top: 15px; transform: scale(.85); transform-origin: center top; }
  .ambient-card { width: 165px; }
  .card-one { left: -45px; top: 145px; }
  .card-two { right: -50px; top: 250px; }
  .floating-app-icon { right: -4px; bottom: 28px; }
  .hero-bottom { display: none; }
  .intro-band, .features, .privacy-band, .beta-section { padding: 78px 0; }
  .intro-grid, .privacy-grid, .beta-layout { grid-template-columns: 1fr; gap: 34px; }
  .intro-grid > div > p { font-size: 17px; }
  .section-heading { display: block; margin-bottom: 34px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: 400px; padding: 24px; }
  .feature-art { height: 225px; }
  .support-inner { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; gap: 14px 22px; }
  .copyright { grid-column: auto; }
  .article-hero { padding: 120px 0 52px; }
  .article-layout { width: min(calc(100% - 34px), 920px); padding: 52px 0 80px; grid-template-columns: 1fr; gap: 30px; }
  .article-nav { position: static; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .article-nav a { display: inline-block; margin-right: 17px; }
  .support-options { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .hero-actions, .beta-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .product-visual { width: 118%; margin-left: -9%; transform: scale(.77); }
  .hero { padding-bottom: 0; }
  .platform-line { flex-wrap: wrap; }
}

@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; transform: none; }
}