:root {
  color-scheme: light;
  --ink: #111814;
  --muted: #53605a;
  --green-950: #032a1d;
  --green-900: #063d2b;
  --green-800: #07563b;
  --green-700: #0b6b4b;
  --green-500: #28b67c;
  --green-200: #96f8c9;
  --green-100: #d8f8e8;
  --signal: #d9ff57;
  --cream: #f4f6f2;
  --surface: #ffffff;
  --surface-soft: #e9eeea;
  --line: #d3ddd7;
  --amber: #805600;
  --amber-bg: #ffe2a8;
  --shadow-soft: 0 20px 60px rgba(3, 42, 29, .09);
  --shadow-strong: 0 30px 80px rgba(3, 42, 29, .18);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 17px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 280px;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

body::before {
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  width: 100%;
  height: 880px;
  background:
    linear-gradient(115deg, transparent 61%, rgba(40, 182, 124, .10) 61.2%, transparent 61.5%),
    radial-gradient(circle at 82% 15%, rgba(150, 248, 201, .55), transparent 29rem),
    linear-gradient(#f8faf7, var(--cream));
  content: "";
}

a { color: inherit; }
h1, h2, h3, p { margin-top: 0; }

.shell { width: min(calc(100% - 36px), var(--max)); margin-inline: auto; }

.skip-link {
  position: fixed;
  z-index: 50;
  top: 8px;
  left: 8px;
  padding: 11px 15px;
  border-radius: 10px;
  background: var(--green-950);
  color: #fff;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(6, 61, 43, .08);
  background: rgba(248, 250, 247, .76);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  width: min(calc(100% - 36px), var(--max));
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-inline: auto;
}

.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 15px;
  background: var(--green-700);
  color: #fff;
  font-weight: 900;
  letter-spacing: -.04em;
  box-shadow: 0 9px 20px rgba(11, 107, 75, .18);
}
.brand-copy strong, .brand-copy small { display: block; }
.brand-copy strong { line-height: 1.2; }
.brand-copy small { margin-top: 2px; color: var(--muted); font-size: .78rem; }

nav { display: flex; gap: 28px; }
nav a { color: var(--muted); font-size: .9rem; font-weight: 700; text-decoration: none; }
nav a:hover { color: var(--green-700); }

.header-download {
  border-radius: 999px;
  padding: 10px 17px;
  background: var(--green-950);
  color: #fff;
  font-size: .85rem;
  font-weight: 800;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(390px, .88fr);
  gap: clamp(42px, 7vw, 96px);
  align-items: center;
  min-height: 710px;
  padding-block: 70px 100px;
}
.hero > * { min-width: 0; }

.eyebrow {
  color: var(--green-700);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .12em;
}
.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 5px rgba(40, 182, 124, .13);
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(3.1rem, 6.8vw, 6.3rem);
  line-height: .91;
  letter-spacing: -.066em;
  text-wrap: balance;
}
h1 em { color: var(--green-700); font-style: normal; }

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4.3vw, 3.7rem);
  line-height: 1;
  letter-spacing: -.052em;
  text-wrap: balance;
}
h3 { margin-bottom: 8px; font-size: 1.24rem; line-height: 1.2; letter-spacing: -.02em; }

.hero-lead {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.25rem);
}

.hero-actions, .final-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 14px 22px;
  font: inherit;
  font-weight: 820;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button:focus-visible, summary:focus-visible, a:focus-visible {
  outline: 4px solid #f6bd61;
  outline-offset: 3px;
}
.button-primary { background: var(--green-700); color: #fff; box-shadow: 0 14px 30px rgba(11,107,75,.22); }
.button-primary:hover { background: var(--green-800); }
.button-dark { background: var(--green-950); color: #fff; box-shadow: 0 14px 30px rgba(3,42,29,.20); }
.button-dark:hover { background: #011e15; }
.button-ghost { border-color: var(--line); background: rgba(255,255,255,.52); color: var(--ink); }
.button-full { width: 100%; }

.trust-row { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 30px; color: var(--muted); font-size: .88rem; }
.trust-row b { color: var(--green-700); }

.hero-stage { position: relative; min-height: 520px; }
.stage-glow {
  position: absolute;
  inset: 50px 10px 20px 30px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(40,182,124,.27), transparent 67%);
  filter: blur(18px);
}
.signal-panel {
  position: absolute;
  top: 42px;
  right: 16px;
  left: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 30px;
  background: linear-gradient(145deg, #063d2b, #021d14);
  box-shadow: var(--shadow-strong);
  color: #f2fff8;
  transform: rotate(2deg);
}
.signal-header, .signal-footer { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; }
.signal-header { border-bottom: 1px solid rgba(255,255,255,.10); }
.signal-header span { color: var(--green-200); font-size: .7rem; font-weight: 850; letter-spacing: .1em; }
.signal-header i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--signal); }
.signal-header strong { font-size: .86rem; }
.signal-event { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 13px; align-items: center; margin: 20px; border: 1px solid rgba(255,255,255,.11); border-radius: 18px; padding: 16px; background: rgba(255,255,255,.07); }
.signal-event small, .signal-event strong { display: block; }
.signal-event small { margin-bottom: 3px; color: #9ec3b2; font-size: .63rem; font-weight: 850; letter-spacing: .1em; }
.event-icon { display: grid; width: 44px; height: 44px; place-items: center; border-radius: 13px; background: rgba(150,248,201,.12); color: var(--green-200); font-size: .73rem; font-weight: 900; }
.event-state { border-radius: 999px; padding: 6px 9px; background: rgba(255,255,255,.08); color: #c9e1d6; font-size: .68rem; }
.signal-success { border-color: rgba(217,255,87,.34); background: rgba(217,255,87,.10); }
.signal-success .event-icon { background: var(--signal); color: var(--green-950); }
.signal-success .event-state { background: var(--signal); color: var(--green-950); font-weight: 850; }
.signal-line { height: 42px; margin: -20px 0; }
.signal-line span { display: block; width: 1px; height: 100%; margin-left: 62px; background: linear-gradient(var(--green-200), var(--signal)); }
.signal-footer { border-top: 1px solid rgba(255,255,255,.10); color: #9ec3b2; font-size: .72rem; }
.signal-footer b { color: var(--signal); }
.speed-chip { position: absolute; z-index: 2; border: 1px solid rgba(6,61,43,.15); border-radius: 999px; padding: 9px 13px; background: rgba(255,255,255,.88); box-shadow: var(--shadow-soft); color: var(--green-800); font-size: .66rem; font-weight: 900; letter-spacing: .1em; backdrop-filter: blur(10px); }
.speed-chip-one { top: 18px; right: 6px; transform: rotate(5deg); }
.speed-chip-two { bottom: 20px; left: -10px; transform: rotate(-5deg); }

.download-section { padding-block: 100px 120px; }
.section-heading { max-width: 760px; margin-bottom: 42px; }
.section-heading > p:last-child { color: var(--muted); font-size: 1.03rem; }
.section-heading.centered { margin-inline: auto; text-align: center; }

.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.download-card {
  display: grid;
  gap: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: clamp(26px, 4vw, 42px);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.android-card { border-color: rgba(11,107,75,.25); background: linear-gradient(145deg, #fff, #effbf5); }
.chrome-card { background: linear-gradient(145deg, #fff, #edf1ee); }
.card-topline { display: flex; min-height: 54px; align-items: center; justify-content: space-between; gap: 14px; }
.platform-icon { display: grid; width: 54px; height: 54px; flex: 0 0 54px; place-items: center; border-radius: 17px; font-weight: 900; }
.android-icon { background: var(--green-700); color: #fff; box-shadow: 0 10px 24px rgba(11,107,75,.20); }
.chrome-icon { position: relative; border-radius: 50%; background: conic-gradient(#e94235 0 33%, #f7c945 0 66%, #31a853 0); }
.chrome-icon::before { position: absolute; width: 25px; height: 25px; border: 4px solid #fff; border-radius: 50%; background: #4285f4; content: ""; }
.recommended, .desktop-label { border-radius: 999px; padding: 7px 10px; font-size: .67rem; font-weight: 900; letter-spacing: .08em; }
.recommended { background: var(--green-100); color: var(--green-800); }
.desktop-label { background: var(--surface-soft); color: var(--muted); }
.platform-name { margin-bottom: 7px; color: var(--green-700); font-size: .72rem; font-weight: 900; letter-spacing: .12em; }
.download-card h3 { font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.045em; }
.card-description { min-height: 3.2em; margin-bottom: 0; color: var(--muted); }
.product-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; margin: 0; border: 1px solid var(--line); border-radius: 15px; background: var(--line); }
.product-meta div { padding: 13px; background: rgba(255,255,255,.88); }
.product-meta dt { color: var(--muted); font-size: .68rem; font-weight: 800; text-transform: uppercase; }
.product-meta dd { margin: 2px 0 0; font-size: .9rem; font-weight: 850; }
.download-note { margin: -16px 0 0; color: var(--muted); font-size: .82rem; text-align: center; }

.share-strip { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 18px; align-items: center; margin-top: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 18px; background: rgba(255,255,255,.60); }
.qr-mini { display: grid; width: 112px; height: 112px; place-items: center; overflow: hidden; border-radius: 15px; background: #fff; }
.qr-mini img { width: 100%; height: 100%; }
.share-strip strong { font-size: 1.05rem; }
.share-strip p { margin: 3px 0 7px; color: var(--muted); }
.share-strip code { color: var(--green-700); font-weight: 850; }
.share-status { grid-column: 2 / -1; min-height: 0; margin: -12px 0 0; color: var(--green-700); font-size: .82rem; }

.workflow { padding-block: 100px; }
.workflow-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; counter-reset: workflow; }
.workflow-list li { position: relative; display: grid; min-height: 250px; align-content: space-between; overflow: hidden; border-radius: var(--radius-lg); padding: 24px; background: var(--green-950); color: #f3fff8; }
.workflow-list li::after { position: absolute; right: -40px; bottom: -65px; width: 170px; height: 170px; border: 1px solid rgba(150,248,201,.18); border-radius: 50%; content: ""; }
.workflow-list span { color: var(--signal); font-size: .75rem; font-weight: 900; letter-spacing: .1em; }
.workflow-list p { margin-bottom: 0; color: #bad3c7; }

.notice { display: flex; gap: 15px; align-items: flex-start; border: 1px solid rgba(128,86,0,.25); border-radius: var(--radius-lg); padding: 22px; }
.notice-warning { background: var(--amber-bg); color: #281800; }
.notice h2 { margin-bottom: 3px; font-size: 1.2rem; letter-spacing: -.02em; }
.notice p { margin-bottom: 0; }
.notice-symbol { display: grid; width: 36px; height: 36px; flex: 0 0 36px; place-items: center; border-radius: 50%; background: #281800; color: #fff; font-weight: 900; }

.install-section { padding-block: 120px; }
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.guide-card { border: 1px solid var(--line); border-radius: var(--radius-xl); padding: clamp(24px, 4vw, 38px); background: var(--surface); }
.guide-card-dark { border-color: var(--green-950); background: var(--green-950); color: #f3fff8; }
.guide-heading { display: flex; align-items: center; gap: 15px; margin-bottom: 30px; }
.guide-heading p { margin-bottom: 2px; color: var(--green-700); font-size: .68rem; font-weight: 900; letter-spacing: .1em; }
.guide-card-dark .guide-heading p { color: var(--green-200); }
.guide-heading h3 { margin-bottom: 0; font-size: 1.55rem; }
.guide-card ol { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; }
.guide-card li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 11px; align-items: start; }
.guide-card li span { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 10px; background: var(--green-100); color: var(--green-800); font-size: .72rem; font-weight: 900; }
.guide-card li p { padding-top: 4px; margin-bottom: 0; }
.guide-card-dark li span { background: rgba(150,248,201,.12); color: var(--green-200); }
.guide-card details { margin-top: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-soft); }
summary { min-height: 52px; padding: 14px 16px; font-weight: 800; cursor: pointer; }
.details-body { padding: 0 16px 16px; color: var(--muted); }
.guide-warning { margin-top: 22px; border: 1px solid rgba(217,255,87,.28); border-radius: 14px; padding: 14px; background: rgba(217,255,87,.08); color: #d7e8df; font-size: .9rem; }

.prepare-section { background: var(--green-950); color: #f3fff8; }
.prepare-inner { padding-block: 110px; }
.prepare-section .section-heading .eyebrow { color: var(--green-200); }
.prepare-section .section-heading > p:last-child { color: #b6d0c3; }
.prepare-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.prepare-grid article { border: 1px solid rgba(255,255,255,.10); border-radius: var(--radius-lg); padding: 22px; background: rgba(255,255,255,.055); }
.prepare-grid span { display: block; margin-bottom: 38px; color: var(--signal); font-size: .72rem; font-weight: 900; letter-spacing: .1em; }
.prepare-grid p { margin-bottom: 0; color: #b6d0c3; font-size: .9rem; }

.update-card { display: flex; gap: 40px; align-items: center; justify-content: space-between; margin-block: 110px; border-radius: var(--radius-xl); padding: clamp(28px, 6vw, 58px); background: var(--green-100); color: var(--green-950); }
.update-copy { max-width: 720px; }
.update-copy p:last-child { margin-bottom: 0; }
.version-stack { display: grid; gap: 9px; flex: 0 0 220px; }
.version-stack span { display: flex; justify-content: space-between; border-radius: 999px; padding: 10px 14px; background: rgba(255,255,255,.58); font-size: .87rem; }

.security { display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; align-items: start; padding-block: 70px; border-top: 1px solid var(--line); }
.security > div > p:last-child { color: var(--muted); }
.hash-list { display: grid; gap: 10px; }
.hash-list details { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.hash-list code { display: block; padding: 0 16px 16px; color: var(--green-700); font-size: .76rem; overflow-wrap: anywhere; }

.final-cta { padding-block: 100px 130px; text-align: center; }
.final-cta h2 { max-width: 820px; margin-inline: auto; }
.final-actions { justify-content: center; margin-top: 28px; }
.final-actions .button { min-width: 180px; }

footer { padding-block: 34px; background: #021d14; color: #bad3c7; }
.footer-inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 34px; align-items: center; }
.footer-brand { color: #fff; }
.footer-brand .brand-copy small { color: #9bb9aa; }
.footer-inner p { max-width: 600px; margin-bottom: 0; font-size: .84rem; }
.footer-inner > a { font-size: .85rem; font-weight: 800; }

@media (max-width: 940px) {
  nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-stage { width: min(100%, 560px); min-height: 500px; }
  .download-grid, .guide-grid { grid-template-columns: 1fr; }
  .workflow-list { grid-template-columns: 1fr; }
  .workflow-list li { min-height: 210px; }
  .prepare-grid { grid-template-columns: repeat(2, 1fr); }
  .security { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 650px) {
  .shell, .header-inner { width: min(calc(100% - 24px), var(--max)); }
  .header-inner { min-height: 70px; }
  .brand-mark { width: 43px; height: 43px; }
  .header-download { display: none; }
  .hero { gap: 30px; padding-block: 54px 72px; }
  h1 { font-size: clamp(3rem, 15vw, 4.3rem); }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  .trust-row { display: grid; }
  .hero-stage { min-height: 420px; }
  .signal-panel { top: 28px; right: 0; left: 0; }
  .signal-event { grid-template-columns: 42px minmax(0, 1fr); }
  .event-state { display: none; }
  .speed-chip-two { bottom: 0; left: 0; }
  .download-section, .install-section { padding-block: 82px; }
  .download-card { border-radius: 25px; }
  .product-meta { grid-template-columns: 1fr; }
  .card-description { min-height: 0; }
  .share-strip { grid-template-columns: 1fr; text-align: center; }
  .qr-mini { margin-inline: auto; }
  .share-status { grid-column: 1; margin-top: -8px; }
  .workflow { padding-block: 80px; }
  .notice { width: min(calc(100% - 24px), var(--max)); }
  .prepare-grid { grid-template-columns: 1fr; }
  .prepare-grid span { margin-bottom: 20px; }
  .update-card { display: grid; margin-block: 82px; }
  .version-stack { width: 100%; flex-basis: auto; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-brand { justify-content: center; }
  .footer-inner p { margin-inline: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ink: #e2e9e5;
    --muted: #b5c2bc;
    --cream: #0d1410;
    --surface: #151e19;
    --surface-soft: #202b25;
    --line: #35443c;
    --green-100: #0a4b34;
    --shadow-soft: 0 20px 60px rgba(0,0,0,.28);
  }
  body::before { background: radial-gradient(circle at 82% 15%, rgba(0,82,54,.50), transparent 29rem), linear-gradient(#0d1510, var(--cream)); }
  .site-header { background: rgba(13,20,16,.80); }
  .button-ghost, .share-strip { background: rgba(21,30,25,.72); }
  .android-card { background: linear-gradient(145deg, #151e19, #10281d); }
  .chrome-card { background: linear-gradient(145deg, #151e19, #1b2420); }
  .product-meta div { background: #151e19; }
  .download-note { color: #b5c2bc; }
  .notice-warning { background: #614000; color: #ffdea1; }
  .notice-symbol { background: #ffdea1; color: #432c00; }
  .update-card { background: #0a4b34; color: #d8f8e8; }
  .version-stack span { background: rgba(0,0,0,.18); }
}