:root {
  color-scheme: light;
  --bg: #f7f8fc;
  --bg-soft: #eef1f8;
  --panel: rgba(255,255,255,.72);
  --panel-solid: #ffffff;
  --text: #111827;
  --text-soft: #5b6476;
  --muted: #798396;
  --line: rgba(17,24,39,.10);
  --line-strong: rgba(17,24,39,.16);
  --accent: #6557ff;
  --accent-2: #8f6bff;
  --accent-soft: rgba(101,87,255,.11);
  --shadow: 0 24px 70px rgba(33, 39, 62, .12);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1320px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #080b14;
  --bg-soft: #0d1220;
  --panel: rgba(17,22,37,.72);
  --panel-solid: #111625;
  --text: #f2f5fb;
  --text-soft: #aab3c5;
  --muted: #7d8799;
  --line: rgba(255,255,255,.09);
  --line-strong: rgba(255,255,255,.15);
  --accent: #8b7fff;
  --accent-2: #ae82ff;
  --accent-soft: rgba(139,127,255,.14);
  --shadow: 0 30px 90px rgba(0,0,0,.34);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  letter-spacing: -.01em;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }
.skip-link { position: fixed; left: 18px; top: -60px; background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 10px; z-index: 99; }
.skip-link:focus { top: 18px; }

.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(18px); background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid var(--line); }
.nav-wrap { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.03em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 8px 24px rgba(101,87,255,.22); }
.brand span { font-size: 1.06rem; }
.desktop-nav { display: flex; align-items: center; gap: 26px; color: var(--text-soft); font-size: .94rem; }
.desktop-nav a:hover, .mobile-nav a:hover, .footer-links a:hover { color: var(--text); }
.nav-actions { display: flex; gap: 8px; }
.icon-btn { width: 40px; height: 40px; border: 1px solid var(--line); background: var(--panel); color: var(--text); border-radius: 12px; cursor: pointer; display: grid; place-items: center; font-size: 1rem; }
.icon-btn:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.menu-btn { display: none; }
.mobile-nav { display: none; border-top: 1px solid var(--line); padding: 10px 20px 16px; }
.mobile-nav a { display: block; padding: 10px 0; color: var(--text-soft); }

.hero { position: relative; overflow: hidden; padding: 92px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 64px; min-height: 680px; }
.hero-copy { position: relative; z-index: 2; max-width: 640px; }
.eyebrow, .section-kicker { color: var(--accent); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; padding: 9px 13px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #6ce0ac; box-shadow: 0 0 0 5px rgba(108,224,172,.12); }
.hero h1 { margin: 26px 0 20px; max-width: 700px; font-size: clamp(3.15rem, 7vw, 5.7rem); line-height: .99; letter-spacing: -.06em; }
.gradient-text { background: linear-gradient(100deg, var(--accent), var(--accent-2) 70%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { max-width: 650px; font-size: 1.1rem; color: var(--text-soft); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px; padding: 0 18px; border-radius: 13px; border: 1px solid var(--line-strong); font-weight: 750; font-size: .93rem; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: white; border-color: transparent; background: linear-gradient(135deg, var(--accent), var(--accent-2)); box-shadow: 0 15px 35px rgba(101,87,255,.23); }
.btn-secondary { background: var(--panel); }
.btn-ghost { border-color: transparent; color: var(--text-soft); }
.hero-meta { display: flex; align-items: center; gap: 10px; margin-top: 24px; font-size: .84rem; color: var(--muted); }
.hero-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.hero-steps { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 22px 0 0; padding: 0; list-style: none; }
.hero-steps li { display: inline-flex; align-items: center; gap: 7px; font-size: .8rem; color: var(--text-soft); }
.hero-steps li span { width: 23px; height: 23px; display: grid; place-items: center; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: .72rem; flex: none; }
.hero-visual { position: relative; }
.window-card { position: relative; border-radius: 23px; overflow: hidden; background: var(--panel-solid); border: 1px solid var(--line-strong); box-shadow: var(--shadow); transform: none; }
.window-topbar { height: 42px; display: grid; grid-template-columns: auto auto auto 1fr; gap: 7px; align-items: center; padding: 0 14px; background: color-mix(in srgb, var(--panel-solid) 90%, var(--bg-soft)); border-bottom: 1px solid var(--line); }
.window-topbar > span { width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); }
.window-topbar div { justify-self: center; color: var(--muted); font-size: .73rem; }
.window-card img { width: 100%; height: auto; aspect-ratio: auto; object-fit: contain; object-position: center; display: block; }
.window-overlay { position: absolute; inset: auto 18px 18px 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 14px; border: 1px solid rgba(255,255,255,.14); border-radius: 15px; background: rgba(9,13,24,.74); color: #fff; backdrop-filter: blur(14px); }
.window-overlay strong { display: block; font-size: .88rem; }
.window-overlay small { color: #c8cfdd; }
.privacy-chip { flex: none; border-radius: 999px; padding: 8px 10px; background: rgba(139,127,255,.18); color: #eae7ff; font-size: .72rem; font-weight: 750; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none; opacity: .8; }
.glow-a { width: 480px; height: 480px; left: 42%; top: -180px; background: rgba(101,87,255,.17); }
.glow-b { width: 330px; height: 330px; right: -120px; bottom: 30px; background: rgba(179,116,255,.14); }
.trust-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; padding-top: 15px; }
.trust-item { display: flex; gap: 12px; align-items: center; padding: 15px 16px; border: 1px solid var(--line); background: var(--panel); border-radius: 16px; }
.trust-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: var(--accent-soft); color: var(--accent); font-weight: 800; }
.trust-item strong, .trust-item small { display: block; }
.trust-item strong { font-size: .85rem; }
.trust-item small { font-size: .73rem; color: var(--muted); margin-top: 2px; }

.section { padding: 115px 0; }
.section-soft { background: var(--bg-soft); }
.section-heading { max-width: 760px; margin-bottom: 50px; }
.section-heading h2, .download-copy h2, .arch-copy h2, .about-card h2, .cta-box h2 { margin: 12px 0 14px; font-size: clamp(2.2rem, 5vw, 3.65rem); line-height: 1.03; letter-spacing: -.045em; }
.section-heading p, .download-copy p, .arch-copy p, .about-card p, .social-card p, .cta-box p { color: var(--text-soft); max-width: 720px; }
.split-heading { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.text-link { color: var(--accent); font-weight: 750; font-size: .92rem; white-space: nowrap; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature-card { border: 1px solid var(--line); background: var(--panel); border-radius: var(--radius); padding: 27px; min-height: 200px; }
.feature-card-wide { grid-column: span 2; display: flex; gap: 20px; align-items: flex-start; }
.feature-card h3 { margin: 13px 0 8px; font-size: 1.1rem; }
.feature-card-wide h3 { margin-top: 2px; }
.feature-card p { margin: 0; color: var(--text-soft); font-size: .92rem; }
.feature-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: var(--accent-soft); color: var(--accent); font-weight: 800; flex: none; }
.dark-inset { background: linear-gradient(140deg, var(--panel), color-mix(in srgb, var(--accent) 5%, var(--panel))); }

.gallery { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.gallery-item { margin: 0; display: flex; flex-direction: column; border-radius: 20px; overflow: hidden; border: 1px solid var(--line); background: var(--panel-solid); box-shadow: 0 1px 0 rgba(0,0,0,.02), 0 18px 40px rgba(0,0,0,.04); transition: transform .3s cubic-bezier(.2,.7,.3,1), border-color .3s ease, box-shadow .3s ease; }
.gallery-item:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.gallery-item img { width: 100%; height: 240px; object-fit: cover; object-position: top center; display: block; background: var(--panel-solid); }
.gallery-item figcaption { display: flex; flex-direction: column; align-items: flex-start; gap: 3px; padding: 16px 18px 20px; }
.gallery-item figcaption .step { display: inline-block; font-size: .68rem; font-weight: 800; letter-spacing: .08em; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 4px 10px; margin-bottom: 6px; line-height: 1; }
.gallery-item figcaption strong { font-size: 1.02rem; letter-spacing: -.015em; }
.gallery-item figcaption p { margin: 4px 0 0; color: var(--text-soft); font-size: .85rem; line-height: 1.5; }
.gallery-item figcaption strong, .gallery-item figcaption span { display: block; }

.download-panel { display: grid; grid-template-columns: .82fr 1.18fr; gap: 34px; padding: 38px; border: 1px solid var(--line-strong); background: linear-gradient(145deg, var(--panel-solid), color-mix(in srgb, var(--accent) 4%, var(--panel-solid))); border-radius: 28px; box-shadow: var(--shadow); }
.release-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 23px; }
.release-links a { color: var(--accent); font-size: .86rem; font-weight: 750; }
.download-grid { display: grid; gap: 12px; }
.download-card { display: grid; grid-template-columns: 44px 1fr 22px; align-items: center; gap: 14px; padding: 17px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); transition: transform .2s ease, border-color .2s ease; }
.download-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 38%, var(--line-strong)); }
.platform-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--accent-soft); color: var(--accent); font-weight: 850; }
.download-card strong, .download-card span { display: block; }
.download-card strong { font-size: .94rem; }
.download-card span { color: var(--muted); font-size: .75rem; margin-top: 2px; }
.download-card b { color: var(--accent); }
.download-card b.offline-chip { display: inline-block; margin-top: 6px; width: fit-content; font-size: .64rem; font-weight: 800; letter-spacing: .04em; padding: 3px 8px; border-radius: 999px; background: rgba(34,168,107,.14); color: #1c9c65; }
.download-note { margin-top: 14px; color: var(--muted); font-size: .82rem; }

/* FAQ */
.faq-list { display: grid; gap: 12px; max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel-solid); overflow: hidden; transition: border-color .2s ease, box-shadow .2s ease; }
.faq-item[open] { border-color: var(--line-strong); box-shadow: 0 14px 34px rgba(0,0,0,.06); }
.faq-item summary { cursor: pointer; list-style: none; padding: 18px 20px; font-weight: 700; font-size: 1rem; display: flex; align-items: center; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; margin-left: auto; font-size: 1.35rem; font-weight: 600; color: var(--accent); flex: none; line-height: 1; transition: transform .2s ease; }
.faq-item[open] summary::after { content: "–"; }
.faq-item > p { margin: 0; padding: 0 20px 19px; color: var(--text-soft); font-size: .92rem; line-height: 1.65; }
.faq-item code { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; font-size: .85em; }
.faq-more { text-align: center; margin: 28px 0 0; color: var(--muted); font-size: .85rem; }
.faq-more a { color: var(--accent); font-weight: 600; }
.download-note a { color: var(--accent); }

.architecture-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 40px; align-items: center; }
.tech-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 25px; }
.tech-pills span { padding: 7px 10px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); color: var(--text-soft); font-size: .76rem; }
.architecture-card { padding: 24px; border-radius: 24px; border: 1px solid var(--line); background: radial-gradient(circle at 50% 0, var(--accent-soft), transparent 45%), var(--panel); }
.arch-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.arch-row.three { grid-template-columns: repeat(3,1fr); }
.arch-node { padding: 16px; text-align: center; border: 1px solid var(--line-strong); background: var(--panel-solid); border-radius: 15px; box-shadow: 0 8px 25px rgba(0,0,0,.05); }
.arch-node b, .arch-node small { display: block; }
.arch-node b { font-size: .86rem; }
.arch-node small { margin-top: 5px; font-size: .69rem; color: var(--muted); }
.arch-top { max-width: 330px; margin: 0 auto; border-color: color-mix(in srgb, var(--accent) 40%, var(--line-strong)); }
.arch-line { width: 1px; height: 22px; margin: 0 auto; background: var(--line-strong); }
.arch-node.small { padding: 13px 10px; }

.about-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 14px; }
.about-card, .social-card { border: 1px solid var(--line); border-radius: 24px; background: var(--panel); padding: 32px; }
.about-card .btn { margin-top: 15px; }
.social-card h3 { margin: 12px 0 8px; font-size: 1.55rem; letter-spacing: -.025em; }
.social-links { display: grid; gap: 10px; margin-top: 24px; }
.social-links a { display: grid; grid-template-columns: 40px 1fr 18px; gap: 12px; align-items: center; padding: 12px; border-radius: 14px; border: 1px solid var(--line); background: var(--panel-solid); }
.social-links a:hover { border-color: var(--line-strong); }
.social-symbol { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: var(--accent-soft); color: var(--accent); font-weight: 850; }
.social-links strong, .social-links small { display: block; }
.social-links strong { font-size: .84rem; }
.social-links small { font-size: .69rem; color: var(--muted); margin-top: 1px; }
.social-links b { color: var(--muted); }

.cta-section { padding-top: 30px; padding-bottom: 40px; }
.cta-box { display: flex; justify-content: space-between; align-items: center; gap: 28px; padding: 33px; border-radius: 25px; border: 1px solid var(--line); background: linear-gradient(120deg, var(--accent-soft), transparent 62%), var(--panel); }
.cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cta-box h2 { margin-bottom: 8px; }
.cta-box p { margin: 0; }
.site-footer { padding: 45px 0 55px; border-top: 1px solid var(--line); }
.footer-wrap { display: grid; grid-template-columns: 1.2fr auto auto; gap: 25px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 11px; }
.footer-brand img { width: 32px; height: 32px; border-radius: 8px; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { font-size: .85rem; }
.footer-brand span { color: var(--muted); font-size: .69rem; margin-top: 1px; }
.footer-links { display: flex; gap: 18px; font-size: .78rem; color: var(--text-soft); }
.footer-note { color: var(--muted); font-size: .7rem; white-space: nowrap; }

@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; padding-bottom: 30px; }
  .hero-copy { max-width: 820px; }
  .hero-visual { max-width: 820px; }
  .trust-row { grid-template-columns: repeat(2,1fr); }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .feature-card-wide { grid-column: span 2; }
  .gallery { grid-template-columns: repeat(2,1fr); }
  .download-panel, .architecture-grid, .about-grid { grid-template-columns: 1fr; }
  .footer-wrap { grid-template-columns: 1fr auto; }
  .footer-note { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .desktop-nav { display: none; }
  .menu-btn { display: grid; }
  .mobile-nav.open { display: block; }
  .hero { padding-top: 58px; }
  .hero h1 { font-size: clamp(2.65rem, 15vw, 4.25rem); }
  .hero-lead { font-size: 1rem; }
  .window-card { transform: none; }
  .window-overlay { align-items: flex-start; flex-direction: column; }
  .trust-row, .feature-grid, .gallery { grid-template-columns: 1fr; }
  .feature-card-wide { grid-column: span 1; }
  .section { padding: 86px 0; }
  .split-heading { align-items: flex-start; flex-direction: column; }
  .download-panel, .about-card, .social-card, .cta-box { padding: 25px; border-radius: 20px; }
  .cta-box { align-items: flex-start; flex-direction: column; }
  .footer-wrap { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
  .footer-note { grid-column: auto; }
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}


/* YouTube product walkthrough */
.walkthroughs { padding-top: 60px; }
.walkthroughs .section-heading { margin-inline: auto; text-align: center; margin-bottom: 2rem; }
.walkthroughs .section-heading .section-kicker { display: inline-flex; }
.video-frame {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--border, rgba(127,127,127,.22));
  background: #000;
  box-shadow: 0 24px 70px rgba(0,0,0,.18);
}
.video-poster {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  background: linear-gradient(140deg, #0b0d16, #1a1440 60%, #0b0d16), radial-gradient(circle at 50% 40%, rgba(101,87,255,.25), transparent 60%);
  background-blend-mode: overlay;
  color: #f2f5fb;
  transition: transform .3s cubic-bezier(.2,.7,.3,1), border-color .3s ease;
}
.video-poster:hover .video-play { transform: scale(1.12); }
.video-play {
  width: 74px; height: 74px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 1.7rem; padding-left: 3px;
  background: var(--accent); color: #fff;
  box-shadow: 0 18px 50px rgba(101,87,255,.5);
  transition: transform .25s ease;
}
.video-title { font-weight: 650; font-size: 1.05rem; opacity: .92; }
.video-actions {
  display: flex;
  justify-content: center;
  margin-top: 1.25rem;
}
@media (max-width: 640px) {
  .video-frame { border-radius: 16px; }
}