:root {
  --primary: #079e9c;
  --primary-dark: #047f7e;
  --primary-deep: #075c61;
  --secondary: #17c7bd;
  --blue: #2879f6;
  --violet: #8556ef;
  --ink: #09233f;
  --text: #35506c;
  --muted: #698097;
  --line: #dbe9ef;
  --line-strong: #c9dde5;
  --surface: #ffffff;
  --surface-soft: #f5fbfc;
  --surface-tint: #ebfbfa;
  --shadow-sm: 0 8px 22px rgba(27, 74, 92, .08);
  --shadow-md: 0 20px 52px rgba(22, 74, 91, .13);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1512px;
  --header-height: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 24px); }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
svg { display: block; }
.svg-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.container { width: min(calc(100% - 64px), var(--container)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 2000; top: 8px; left: 8px; padding: 10px 16px; background: var(--ink); color: #fff; transform: translateY(-150%); border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(207, 224, 231, .82);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
  transition: box-shadow .2s ease, background-color .2s ease;
}
.site-header.scrolled { box-shadow: 0 8px 28px rgba(24, 66, 82, .1); background: rgba(255,255,255,.97); }
.nav-shell { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand, .footer-brand { display: flex; align-items: center; }
.brand img { width: 250px; height: 58px; object-fit: contain; }
.site-nav { height: 100%; display: flex; align-items: center; gap: 42px; font-size: 15px; font-weight: 600; color: #172b42; }
.site-nav a { position: relative; display: grid; align-items: center; min-height: 44px; transition: color .2s ease; }
.site-nav a:not(.nav-download)::after { content: ""; position: absolute; right: 50%; bottom: 3px; left: 50%; height: 2px; background: var(--primary); transition: left .2s ease, right .2s ease; }
.site-nav a:hover, .site-nav a.active { color: var(--primary-dark); }
.site-nav a:hover::after, .site-nav a.active::after { right: 0; left: 0; }
.site-nav .nav-download { min-width: 92px; justify-content: center; padding: 0 22px; color: #fff; background: linear-gradient(135deg, var(--secondary), var(--primary)); border-radius: 9px; box-shadow: 0 8px 20px rgba(7, 158, 156, .2); }
.site-nav .nav-download:hover { color: #fff; background: linear-gradient(135deg, #20d2c7, #068c8b); }
.menu-toggle { display: none; width: 48px; height: 48px; place-items: center; border: 0; background: transparent; color: var(--ink); cursor: pointer; }
.menu-toggle svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.menu-close { display: none; }

.hero { position: relative; min-height: 610px; padding: 44px 0 102px; background: linear-gradient(115deg, #fff 0%, #fbfeff 48%, #f2fbfd 100%); overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 680px; height: 680px; right: -250px; top: -310px; border: 1px solid rgba(0, 180, 180, .14); border-radius: 50%; box-shadow: 0 0 0 58px rgba(0, 188, 181, .025), 0 0 0 118px rgba(34, 125, 246, .022); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(410px, .72fr) minmax(700px, 1.28fr); align-items: center; gap: 56px; }
.hero-copy { padding: 28px 0 42px; }
.product-line { display: flex; align-items: center; gap: 18px; margin-bottom: 16px; color: var(--ink); font-size: clamp(24px, 2.3vw, 38px); line-height: 1.15; font-weight: 800; }
.product-line b { padding: 7px 17px; border: 1px solid #72d9da; border-radius: 999px; color: var(--primary-dark); background: rgba(236, 253, 253, .7); font-size: 15px; line-height: 1; letter-spacing: .02em; }
.hero h1 { max-width: 650px; margin: 0; color: #071d37; font-size: clamp(42px, 4vw, 66px); line-height: 1.18; font-weight: 800; letter-spacing: 0; text-wrap: balance; }
.hero h1 span { display: block; color: var(--primary); }
.hero-lead { max-width: 660px; margin: 24px 0 0; color: var(--text); font-size: clamp(17px, 1.22vw, 20px); line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 20px; margin-top: 30px; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 28px; border: 1px solid transparent; border-radius: 10px; font-weight: 700; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease; }
.button svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-primary { color: #fff; background: linear-gradient(135deg, #18bdb5, #038f91); box-shadow: 0 12px 28px rgba(5, 151, 150, .25); }
.button-primary:hover { box-shadow: 0 16px 34px rgba(5, 151, 150, .32); }
.button-secondary { min-width: 160px; color: var(--primary-dark); border-color: #24acad; background: rgba(255,255,255,.72); }
.button-secondary:hover { background: #effdfc; }
.trust-list { display: flex; flex-wrap: wrap; gap: 28px; margin: 26px 0 0; padding: 0; list-style: none; color: #4a6078; font-size: 14px; }
.trust-list li { display: flex; align-items: center; gap: 9px; }
.trust-list span { width: 20px; height: 20px; display: grid; place-items: center; border: 1px solid #34c7a1; border-radius: 50%; color: #06aa72; }
.trust-list svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 2.6; }

.hero-product { position: relative; min-width: 0; }
.screen-halo { position: absolute; inset: 4% 2% -8% 10%; border: 1px solid rgba(20, 181, 180, .22); border-radius: 50%; transform: rotate(-5deg); }
.app-window { position: relative; z-index: 2; margin: 0; padding: 0; overflow: hidden; border: 1px solid rgba(174, 205, 216, .9); border-radius: 16px; background: #fff; box-shadow: 0 28px 68px rgba(22, 74, 91, .18); }
.app-window img { width: 100%; aspect-ratio: 1.598 / 1; object-fit: cover; object-position: center; }
.floating-status { position: absolute; z-index: 3; display: flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 14px; border: 1px solid rgba(202, 224, 230, .85); border-radius: 9px; background: rgba(255,255,255,.92); box-shadow: var(--shadow-sm); color: #274862; font-size: 12px; font-weight: 600; backdrop-filter: blur(12px); }
.floating-status i { width: 8px; height: 8px; border-radius: 50%; background: #18ba87; box-shadow: 0 0 0 5px rgba(24, 186, 135, .12); }
.floating-status svg { width: 16px; height: 16px; fill: none; stroke: var(--primary); stroke-width: 2; }
.status-live { right: -16px; top: 36px; }
.status-voice { left: -20px; bottom: 34px; }
.hero-wave { position: absolute; z-index: 1; right: 0; bottom: -1px; left: 0; width: 100%; height: 168px; }
.wave-soft { fill: rgba(160, 244, 230, .31); }
.wave-bright { fill: rgba(32, 211, 199, .2); }

.section { padding: 92px 0; }
.section-heading { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.section-heading.compact { margin-bottom: 38px; }
.eyebrow { display: inline-block; margin-bottom: 10px; color: var(--primary-dark); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.section-heading h2, .showcase-copy h2, .faq-intro h2, .download-copy h2 { margin: 0; color: var(--ink); font-size: clamp(30px, 2.8vw, 44px); line-height: 1.25; font-weight: 800; text-wrap: balance; }
.section-heading p { margin: 16px auto 0; color: var(--muted); font-size: 17px; }

.features { background: #fff; }
.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.feature-card { grid-column: span 3; position: relative; min-height: 250px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); overflow: hidden; transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease; }
.feature-card::after { content: ""; position: absolute; right: -42px; bottom: -58px; width: 132px; height: 132px; border: 22px solid rgba(0, 169, 164, .035); border-radius: 50%; }
.feature-card:hover { transform: translateY(-5px); border-color: #a8dddf; box-shadow: 0 18px 40px rgba(25, 82, 99, .12); }
.feature-card h3 { margin: 20px 0 8px; font-size: 21px; }
.feature-card p { margin: 0; color: var(--text); font-size: 14px; line-height: 1.8; }
.feature-card > span { display: block; margin-top: 18px; color: var(--primary-dark); font-size: 12px; font-weight: 700; }
.feature-icon { width: 60px; height: 60px; display: grid; place-items: center; border-radius: 14px; }
.feature-icon svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.feature-icon.teal { color: #058f90; background: #e4f9f7; }
.feature-icon.blue { color: #176ee5; background: #e8f1ff; }
.feature-icon.violet { color: #7a3ee8; background: #f1eaff; }
.feature-icon.cyan { color: #079ca7; background: #e5f8fa; }
.feature-icon.mint { color: #0a9d70; background: #e6f8f1; }
.feature-icon.navy { color: #416d9c; background: #edf3fa; }
.feature-card-small { grid-column: span 6; min-height: 124px; display: flex; align-items: center; gap: 22px; padding: 24px 30px; }
.feature-card-small h3 { margin: 0 0 5px; }

.product-showcase { background: linear-gradient(180deg, #f5fbfc 0%, #eef9fa 100%); }
.showcase-grid { display: grid; grid-template-columns: 1.16fr .84fr; align-items: center; gap: 72px; }
.showcase-screen { position: relative; padding: 14px; border: 1px solid var(--line-strong); border-radius: 18px; background: #fff; box-shadow: var(--shadow-md); }
.showcase-screen img { border-radius: 10px; }
.showcase-label { position: absolute; z-index: 2; top: -19px; left: 34px; min-height: 38px; display: flex; align-items: center; gap: 9px; padding: 0 15px; border: 1px solid #bbe5df; border-radius: 8px; background: #fff; box-shadow: var(--shadow-sm); color: var(--primary-deep); font-size: 12px; font-weight: 700; }
.showcase-label i { width: 8px; height: 8px; border-radius: 50%; background: #12b981; }
.showcase-copy > p { margin: 20px 0 0; color: var(--text); font-size: 17px; }
.capability-list { display: grid; gap: 14px; margin: 30px 0 0; padding: 0; list-style: none; }
.capability-list li { display: flex; gap: 16px; padding: 16px; border: 1px solid rgba(202, 224, 230, .9); border-radius: 12px; background: rgba(255,255,255,.75); }
.capability-list li > span { flex: 0 0 auto; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 10px; color: var(--primary); background: var(--surface-tint); }
.capability-list svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.capability-list b, .capability-list small { display: block; }
.capability-list b { font-size: 16px; }
.capability-list small { margin-top: 3px; color: var(--muted); font-size: 13px; line-height: 1.6; }

.workflow { background: #fff; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); list-style: none; overflow: hidden; }
.step { position: relative; min-height: 180px; display: grid; grid-template-columns: auto 1fr; align-content: center; column-gap: 18px; padding: 34px 30px; background: #fff; }
.step + .step { border-left: 1px solid var(--line); }
.step-number { position: absolute; top: 18px; right: 22px; color: #b9d0d7; font-family: Arial, sans-serif; font-size: 30px; line-height: 1; font-weight: 800; }
.step-icon { width: 58px; height: 58px; display: grid; place-items: center; border: 7px solid #d9f5f2; border-radius: 50%; color: #fff; background: linear-gradient(145deg, #18bdb5, #058b8e); box-shadow: 0 8px 18px rgba(6, 145, 145, .2); }
.step-icon svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.step h3 { margin: 0; font-size: 18px; }
.step p { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.faq-section { background: #f6fbfc; }
.faq-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; align-items: start; }
.faq-intro { position: sticky; top: calc(var(--header-height) + 32px); }
.faq-intro p { max-width: 520px; margin: 20px 0 0; color: var(--text); font-size: 17px; }
.text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 26px; color: var(--primary-dark); font-weight: 700; }
.text-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; transition: transform .2s ease; }
.text-link:hover svg { transform: translateX(4px); }
.faq-list { border-top: 1px solid var(--line-strong); }
.faq-list details { border-bottom: 1px solid var(--line-strong); }
.faq-list summary { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--ink); font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid #b9dadd; border-radius: 50%; color: var(--primary); font-size: 19px; font-weight: 400; transition: transform .2s ease; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { max-width: 760px; margin: -3px 54px 22px 0; color: var(--text); font-size: 14px; }

.changelog { padding-top: 72px; background: #fff; }
.changelog-card { display: grid; grid-template-columns: .82fr 1.18fr; align-items: center; gap: 64px; padding: 44px 52px; border: 1px solid var(--line); border-radius: var(--radius-md); background: linear-gradient(110deg, #f4fdfc 0%, #fff 48%, #f8fbff 100%); box-shadow: var(--shadow-sm); }
.changelog-card h2 { margin: 0; color: var(--ink); font-size: 36px; }
.changelog-card p { margin: 8px 0 0; color: var(--text); }
.changelog-card ul { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 28px; margin: 0; padding: 0; list-style: none; color: #34516b; font-size: 14px; }
.changelog-card li { display: flex; gap: 10px; align-items: flex-start; }
.changelog-card svg { flex: 0 0 auto; width: 19px; height: 19px; margin-top: 2px; fill: none; stroke: #0ca67f; stroke-width: 2.5; }

.download-section { padding: 24px 0 72px; }
.download-card { position: relative; min-height: 210px; display: grid; grid-template-columns: 1.12fr .8fr 220px; align-items: center; gap: 40px; padding: 44px 54px; border: 1px solid #cde8e9; border-radius: var(--radius-lg); background: linear-gradient(110deg, #f7fefe 0%, #e9fbfa 58%, #edf7ff 100%); box-shadow: var(--shadow-sm); overflow: hidden; }
.download-copy > span { color: var(--primary-dark); font-size: 13px; font-weight: 800; letter-spacing: .06em; }
.download-copy h2 { margin-top: 8px; font-size: clamp(28px, 2.5vw, 40px); }
.download-copy p { margin: 10px 0 0; color: var(--text); }
.download-action { position: relative; z-index: 2; text-align: center; }
.button-large { width: 100%; min-height: 60px; }
.download-action small { display: block; margin-top: 10px; color: var(--muted); }
.download-visual { position: relative; height: 140px; }
.download-visual::before, .download-visual::after { content: ""; position: absolute; border-radius: 24px; transform: rotate(12deg); }
.download-visual::before { width: 116px; height: 102px; right: 58px; top: 30px; background: rgba(31, 223, 204, .35); filter: blur(1px); }
.download-visual::after { width: 118px; height: 100px; right: 8px; top: 19px; background: rgba(46, 121, 246, .24); }
.download-tile { position: absolute; z-index: 2; right: 30px; top: 0; width: 112px; height: 112px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.86); border-radius: 22px; color: #fff; background: linear-gradient(145deg, #28d4c5, #2879f6); box-shadow: 0 18px 35px rgba(38, 132, 190, .25); transform: rotate(8deg); }
.download-tile svg { width: 54px; height: 54px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.site-footer { border-top: 1px solid var(--line); background: #fbfdfe; }
.footer-main { min-height: 100px; display: grid; grid-template-columns: 230px 1fr auto auto; align-items: center; gap: 28px; color: var(--muted); font-size: 13px; }
.footer-brand img { width: 190px; height: 54px; object-fit: contain; }
.company { color: #536b82; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { min-height: 44px; display: grid; align-items: center; }
.footer-links a:hover { color: var(--primary-dark); }

.availability-dialog {
  width: min(calc(100% - 32px), 430px);
  max-width: 430px;
  padding: 0;
  border: 0;
  border-radius: 20px;
  background: transparent;
  color: var(--ink);
  box-shadow: 0 28px 80px rgba(7, 35, 63, .24);
}
.availability-dialog::backdrop { background: rgba(7, 27, 48, .5); backdrop-filter: blur(5px); }
.availability-panel { position: relative; padding: 42px 36px 34px; border: 1px solid rgba(202, 224, 230, .9); border-radius: 20px; background: #fff; text-align: center; }
.dialog-close { position: absolute; top: 14px; right: 14px; width: 44px; height: 44px; display: grid; place-items: center; padding: 0; border: 0; border-radius: 50%; color: #6b8195; background: transparent; cursor: pointer; transition: color .18s ease, background-color .18s ease; }
.dialog-close:hover { color: var(--ink); background: #eff6f7; }
.dialog-close svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.dialog-icon { width: 66px; height: 66px; display: grid; place-items: center; margin: 0 auto 20px; border: 8px solid #dff7f4; border-radius: 50%; color: #fff; background: linear-gradient(145deg, #18bdb5, #058b8e); box-shadow: 0 12px 24px rgba(6, 145, 145, .2); }
.dialog-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.availability-dialog h2 { margin: 0; font-size: 28px; line-height: 1.3; }
.availability-dialog p { margin: 12px 0 26px; color: var(--text); font-size: 15px; line-height: 1.75; }
.dialog-confirm { min-width: 150px; min-height: 48px; }
body.dialog-open { overflow: hidden; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .42s ease, transform .42s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.legal-page { min-height: 100vh; background: #f6fbfc; }
.legal-header { height: 72px; border-bottom: 1px solid var(--line); background: #fff; }
.legal-header .container { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.legal-header img { width: 220px; height: 54px; object-fit: contain; }
.legal-header a:last-child { color: var(--primary-dark); font-weight: 700; }
.legal-content { max-width: 900px; margin: 48px auto 80px; padding: 52px 58px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow-sm); }
.legal-content h1 { margin: 0 0 10px; font-size: 38px; }
.legal-content .updated { margin: 0 0 36px; color: var(--muted); }
.legal-content h2 { margin: 34px 0 10px; font-size: 21px; }
.legal-content p, .legal-content li { color: var(--text); }

@media (max-width: 1280px) {
  :root { --container: 1180px; }
  .container { width: min(calc(100% - 48px), var(--container)); }
  .site-nav { gap: 26px; }
  .hero { min-height: 560px; padding-top: 34px; }
  .hero-grid { grid-template-columns: minmax(390px, .82fr) minmax(560px, 1.18fr); gap: 42px; }
  .status-live { right: -8px; }
  .feature-card { padding: 25px; }
  .showcase-grid { gap: 48px; }
  .step { padding-inline: 22px; }
  .download-card { grid-template-columns: 1fr .75fr 170px; }
}

@media (max-width: 1024px) {
  :root { --header-height: 66px; }
  .container { width: min(calc(100% - 40px), 940px); }
  .brand img { width: 215px; height: 52px; }
  .menu-toggle { display: grid; }
  .site-nav { position: fixed; inset: var(--header-height) 0 auto 0; height: auto; max-height: calc(100dvh - var(--header-height)); display: grid; align-items: stretch; gap: 0; padding: 12px 20px 24px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.98); box-shadow: 0 18px 36px rgba(26, 68, 84, .12); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: transform .22s ease, opacity .18s ease; overflow-y: auto; }
  .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav a { min-height: 52px; padding: 0 12px; border-bottom: 1px solid #edf3f5; }
  .site-nav a:not(.nav-download)::after { display: none; }
  .site-nav .nav-download { margin-top: 12px; border-bottom: 0; }
  .menu-toggle[aria-expanded="true"] .menu-open { display: none; }
  .menu-toggle[aria-expanded="true"] .menu-close { display: block; }
  .hero { padding: 50px 0 110px; }
  .hero-grid { grid-template-columns: 1fr; gap: 42px; }
  .hero-copy { max-width: 760px; padding: 0; }
  .hero h1 span { display: inline; }
  .hero-product { width: min(100%, 820px); }
  .feature-card { grid-column: span 6; }
  .showcase-grid { grid-template-columns: 1fr; gap: 54px; }
  .showcase-copy { max-width: 760px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step + .step { border-left: 0; }
  .step:nth-child(even) { border-left: 1px solid var(--line); }
  .step:nth-child(n+3) { border-top: 1px solid var(--line); }
  .faq-grid { grid-template-columns: 1fr; gap: 38px; }
  .faq-intro { position: static; max-width: 680px; }
  .changelog-card { grid-template-columns: 1fr; gap: 30px; }
  .download-card { grid-template-columns: 1fr .9fr; }
  .download-visual { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr; padding: 24px 0; }
  .footer-links { justify-content: flex-end; }
}

@media (max-width: 680px) {
  :root { --radius-md: 14px; }
  .container { width: min(calc(100% - 32px), 620px); }
  .brand img { width: 178px; height: 46px; }
  .hero { min-height: auto; padding: 38px 0 84px; }
  .hero::before { width: 430px; height: 430px; right: -270px; top: -180px; }
  .product-line { flex-wrap: wrap; gap: 10px; margin-bottom: 14px; font-size: 24px; }
  .product-line b { padding: 6px 12px; font-size: 12px; }
  .hero h1 { font-size: clamp(36px, 10.5vw, 48px); }
  .hero-lead { margin-top: 18px; font-size: 16px; line-height: 1.8; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 12px; margin-top: 26px; }
  .button { width: 100%; }
  .trust-list { gap: 14px 20px; margin-top: 22px; }
  .hero-grid { gap: 32px; }
  .app-window { border-radius: 11px; transform: none; }
  .floating-status { display: none; }
  .hero-wave { height: 90px; }
  .section { padding: 66px 0; }
  .section-heading { margin-bottom: 34px; text-align: left; }
  .section-heading h2, .showcase-copy h2, .faq-intro h2, .download-copy h2 { font-size: 30px; }
  .section-heading p { font-size: 15px; }
  .feature-grid { grid-template-columns: 1fr; gap: 14px; }
  .feature-card, .feature-card-small { grid-column: auto; min-height: 0; padding: 24px; }
  .feature-card-small { display: flex; }
  .showcase-screen { margin-top: 14px; padding: 8px; border-radius: 13px; }
  .showcase-label { left: 16px; }
  .showcase-copy > p { font-size: 15px; }
  .capability-list li { padding: 14px; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: 154px; }
  .step:nth-child(even) { border-left: 0; }
  .step:nth-child(n+2) { border-top: 1px solid var(--line); }
  .faq-list summary { min-height: 72px; font-size: 15px; }
  .faq-list details p { margin-right: 0; }
  .changelog { padding-top: 52px; }
  .changelog-card { padding: 30px 24px; }
  .changelog-card ul { grid-template-columns: 1fr; }
  .download-section { padding: 12px 0 56px; }
  .download-card { min-height: 0; grid-template-columns: 1fr; gap: 28px; padding: 32px 24px; border-radius: 18px; }
  .download-action { text-align: left; }
  .footer-main { grid-template-columns: 1fr; gap: 8px; text-align: left; }
  .footer-links { flex-wrap: wrap; justify-content: flex-start; gap: 4px 22px; margin-top: 8px; }
  .legal-content { margin: 28px 16px 52px; padding: 32px 24px; }
  .legal-content h1 { font-size: 30px; }
  .availability-panel { padding: 38px 24px 28px; }
  .dialog-confirm { width: 100%; }
}

@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; }
}

:focus-visible { outline: 3px solid rgba(7, 158, 156, .42); outline-offset: 3px; }
@media (forced-colors: active) { .button, .feature-card, .step { border: 1px solid ButtonText; } }