:root {
  --bg: #010309;
  --cyan: #20e6ff;
  --blue: #087cff;
  --green: #20ff97;
  --poster-ratio: 863 / 1823;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-height: 100%; background: var(--bg); color-scheme: dark; -webkit-text-size-adjust: 100%; }
body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: #f6fbff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.landing {
  position: relative;
  isolation: isolate;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 72% 24%, color-mix(in srgb, var(--blue) 18%, transparent), transparent 36%), var(--bg);
}
.ambient {
  position: fixed;
  z-index: -2;
  inset: -7vmax;
  overflow: hidden;
  pointer-events: none;
  background: #010309;
}
.ambient img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(42px) saturate(1.28) brightness(.45);
  transform: scale(1.1);
  opacity: .76;
}
.ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 18%, rgba(0, 0, 0, .72) 82%), linear-gradient(rgba(0, 3, 10, .2), rgba(0, 1, 5, .84));
}

.poster-stage { width: 100%; display: grid; place-items: center; }
.poster-card {
  position: relative;
  container-type: inline-size;
  width: min(100vw, 863px);
  aspect-ratio: var(--poster-ratio);
  overflow: hidden;
  background: #010208;
  user-select: none;
  -webkit-user-select: none;
}
.poster-art { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }

.brand-lockup {
  position: absolute;
  z-index: 3;
  top: 3.2%;
  left: 5.4%;
  width: 50%;
  display: flex;
  align-items: center;
  gap: 2.2cqw;
}
.brand-logo { width: 10.3cqw; height: 10.3cqw; object-fit: contain; border-radius: 2.2cqw; filter: drop-shadow(0 0 1.4cqw rgba(32, 230, 255, .32)); }
.brand-copy { min-width: 0; display: grid; gap: .9cqw; }
.brand-copy strong { font-size: 3.65cqw; line-height: 1; letter-spacing: .18em; white-space: nowrap; }
.brand-copy span { color: rgba(239, 249, 255, .76); font-size: 1.62cqw; line-height: 1.2; letter-spacing: .22em; white-space: nowrap; }

.lang-switch {
  position: absolute;
  z-index: 6;
  top: 3.5%;
  right: 3.5%;
  max-width: 34%;
  display: flex;
  justify-content: flex-end;
  gap: .65cqw;
  flex-wrap: wrap;
}
.lang-switch button {
  min-width: 4.5cqw;
  padding: .78cqw 1.1cqw;
  border: 1px solid rgba(89, 221, 255, .25);
  border-radius: 999px;
  background: rgba(1, 8, 22, .7);
  color: rgba(235, 249, 255, .68);
  font-size: 1.48cqw;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(10px);
}
.lang-switch button.on { border-color: var(--cyan); background: rgba(5, 96, 170, .42); color: #fff; box-shadow: 0 0 1.2cqw rgba(32, 230, 255, .28); }

.hero-copy { position: absolute; z-index: 3; top: 15.2%; left: 5.4%; width: 58%; }
.hero-kicker { margin: 0 0 1.1cqw; color: #fff; font-size: 3.15cqw; line-height: 1; font-weight: 800; letter-spacing: .08em; }
.hero-copy h1 { margin: 0; max-width: 100%; color: #fff; font-size: 6.85cqw; line-height: .98; font-weight: 900; letter-spacing: -.035em; text-transform: uppercase; text-shadow: 0 .4cqw 1.2cqw rgba(0,0,0,.8); }
.hero-copy h1 em { display: block; margin-top: .8cqw; color: var(--cyan); font-style: normal; letter-spacing: -.02em; text-shadow: 0 0 2cqw rgba(0, 133, 255, .42); }
.hero-desc { margin: 2.5cqw 0 0; width: 92%; color: rgba(247, 251, 255, .9); font-size: 3.05cqw; line-height: 1.38; letter-spacing: -.02em; text-shadow: 0 .4cqw 1.2cqw rgba(0,0,0,.9); }

.top-download-button {
  position: absolute;
  z-index: 6;
  top: 29.45%;
  left: 5.4%;
  width: 45%;
  height: 7.2cqw;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.5cqw;
  padding: 0 2cqw;
  border: .2cqw solid rgba(105, 239, 255, .96);
  border-radius: 1.45cqw;
  background: linear-gradient(180deg, rgba(7, 42, 84, .94), rgba(1, 12, 35, .98));
  box-shadow: 0 0 .75cqw rgba(90, 232, 255, .9), 0 0 2.1cqw rgba(0, 116, 255, .7), inset 0 1px rgba(255,255,255,.22);
  color: #fff;
  font-size: 2.25cqw;
  line-height: 1;
  font-weight: 800;
  letter-spacing: .045em;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
}
.top-download-arrow { color: var(--cyan); font-size: 3.4cqw; line-height: .8; transform: translateY(-.15cqw); }
.top-download-button:hover, .top-download-button:focus-visible { filter: brightness(1.14); box-shadow: 0 0 1cqw rgba(115, 244, 255, 1), 0 0 2.8cqw rgba(0, 126, 255, .92); }
.top-download-button:active { transform: scale(.975); }
.top-download-button.download-busy { pointer-events: none; opacity: .82; }

.feature-list {
  position: absolute;
  z-index: 4;
  top: 33.9%;
  left: 18.2%;
  width: 40.5%;
  height: 38.1%;
  display: grid;
  grid-template-rows: repeat(4, 1fr);
}
.feature-item { align-self: center; display: grid; gap: 1cqw; padding: 1.1cqw 1.3cqw; border-radius: 1.4cqw; outline: none; transition: background .18s ease, transform .18s ease, box-shadow .18s ease; }
.feature-item strong { color: #fff; font-size: 2.72cqw; line-height: 1.12; letter-spacing: -.015em; text-shadow: 0 .35cqw 1cqw #000; }
.feature-item span { color: rgba(246, 251, 255, .84); font-size: 2.12cqw; line-height: 1.43; text-shadow: 0 .35cqw 1cqw #000; }
.feature-item:hover, .feature-item:focus-visible { transform: translateX(.8cqw); background: rgba(3, 45, 94, .44); box-shadow: inset 0 0 0 1px rgba(32, 230, 255, .18), 0 0 2cqw rgba(0, 100, 255, .16); }

.conversion-zone { position: absolute; z-index: 5; left: 0; right: 0; top: 87.15%; bottom: 0; text-align: center; }
.download-button {
  position: relative;
  width: 52.3%;
  height: 10.9cqw;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 2.2cqw;
  padding: 0 3cqw;
  overflow: hidden;
  border: .24cqw solid rgba(118, 241, 255, .98);
  border-radius: 1.8cqw;
  background: linear-gradient(180deg, rgba(10, 32, 68, .96), rgba(2, 9, 28, .98));
  box-shadow: 0 0 .9cqw rgba(118, 241, 255, 1), 0 0 2.8cqw rgba(0, 118, 255, .9), inset 0 0 1.4cqw rgba(49, 199, 255, .18), inset 0 1px rgba(255,255,255,.25);
  color: #fff;
  font-size: 3.35cqw;
  line-height: 1;
  font-weight: 750;
  letter-spacing: .035em;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
}
.download-button::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 0%, rgba(81, 224, 255, .2), transparent 62%); pointer-events: none; }
.download-button::after { content: ""; position: absolute; top: -50%; bottom: -50%; left: -26%; width: 16%; transform: skewX(-20deg); background: linear-gradient(90deg, transparent, rgba(255,255,255,.42), transparent); transition: left .65s ease; }
.download-button:hover::after, .download-button:focus-visible::after { left: 112%; }
.download-button:hover, .download-button:focus-visible { filter: brightness(1.13); box-shadow: 0 0 1.25cqw rgba(132, 248, 255, 1), 0 0 3.5cqw rgba(0, 126, 255, 1), inset 0 0 1.5cqw rgba(71, 218, 255, .24); }
.download-button:active { transform: scale(.975); }
.download-button.download-busy { pointer-events: none; opacity: .82; }
.download-icon { position: relative; width: 4.3cqw; height: 4.8cqw; border-bottom: .46cqw solid currentColor; border-radius: 0 0 .5cqw .5cqw; }
.download-icon::before { content: ""; position: absolute; left: 50%; top: -.1cqw; width: .45cqw; height: 3.25cqw; border-radius: 99px; background: currentColor; transform: translateX(-50%); }
.download-icon::after { content: ""; position: absolute; left: 50%; top: 1.55cqw; width: 1.7cqw; height: 1.7cqw; border-right: .44cqw solid currentColor; border-bottom: .44cqw solid currentColor; transform: translateX(-50%) rotate(45deg); }
.download-button > span { z-index: 1; }
.cta-sub { margin: 1.25cqw 0 0; color: rgba(218, 242, 255, .72); font-size: 1.65cqw; letter-spacing: .06em; }
.live-note { margin: .7cqw 0 0; color: rgba(209, 246, 255, .72); font-size: 1.55cqw; }
.live-note b { color: var(--cyan); }
.risk-note { margin: .7cqw auto 0; max-width: 72%; color: rgba(217, 230, 242, .48); font-size: 1.42cqw; line-height: 1.3; }
.backup-row { margin: .8cqw auto 0; max-width: 84%; display: flex; align-items: center; justify-content: center; gap: .75cqw; flex-wrap: wrap; }
.backup-row a, .backup-row button { padding: .72cqw 1.15cqw; border: 1px solid rgba(90, 215, 255, .3); border-radius: 999px; background: rgba(3, 15, 35, .88); color: #eafaff; font-size: 1.35cqw; cursor: pointer; }
.poster-footer { position: absolute; z-index: 4; left: 4%; right: 4%; bottom: .55%; display: flex; justify-content: center; gap: 1.2cqw; color: rgba(201, 222, 237, .35); font-size: 1.05cqw; text-align: center; }

.announce { position: fixed; z-index: 30; top: 0; left: 0; right: 0; padding: 10px 50px; background: #087cff; color: #fff; font-size: 13px; text-align: center; box-shadow: 0 8px 30px rgba(0,0,0,.3); }
.floating-cta { position: fixed; z-index: 18; left: 50%; bottom: max(14px, env(safe-area-inset-bottom)); transform: translate(-50%, 120px); display: inline-flex; align-items: center; gap: 9px; padding: 12px 22px; border: 1px solid var(--cyan); border-radius: 999px; background: rgba(2, 12, 31, .92); box-shadow: 0 0 25px rgba(0, 128, 255, .45); color: #fff; font-weight: 750; opacity: 0; transition: .25s ease; backdrop-filter: blur(14px); }
.floating-cta.show { transform: translate(-50%, 0); opacity: 1; }
.contact-btn { position: fixed; z-index: 19; right: 16px; bottom: max(16px, env(safe-area-inset-bottom)); padding: 11px 15px; border: 1px solid rgba(32,230,255,.5); border-radius: 999px; background: rgba(2, 12, 31, .9); box-shadow: 0 12px 35px rgba(0,0,0,.38); font-size: 13px; }

.state-mask, .modal { position: fixed; z-index: 50; inset: 0; display: grid; place-items: center; padding: 24px; background: rgba(0, 3, 10, .9); backdrop-filter: blur(18px); }
.state-mask > div, .modal-card { width: min(420px, 100%); padding: 30px; border: 1px solid rgba(82, 218, 255, .28); border-radius: 22px; background: linear-gradient(150deg, rgba(8, 28, 61, .98), rgba(1, 7, 21, .98)); box-shadow: 0 30px 100px rgba(0,0,0,.65), 0 0 40px rgba(0, 108, 255, .18); text-align: center; }
.state-mask img { width: 66px; height: 66px; }
.state-mask h2, .modal-card h2 { margin: 18px 0 9px; }
.state-mask p, .modal-card p { margin: 0 0 22px; color: rgba(232, 244, 255, .72); line-height: 1.6; }
.modal-card button { width: 100%; margin-top: 9px; padding: 12px 16px; border: 1px solid var(--cyan); border-radius: 12px; background: linear-gradient(135deg, var(--blue), #034da8); color: #fff; cursor: pointer; }
.modal-card button.ghost { background: transparent; border-color: rgba(143, 216, 255, .28); }
.modal-icon { display: grid; place-items: center; width: 56px; height: 56px; margin: auto; border: 1px solid rgba(32,230,255,.45); border-radius: 50%; color: var(--cyan); font-size: 28px; }
.noscript { position: fixed; z-index: 80; inset: auto 16px 16px; padding: 12px; border-radius: 10px; background: #101a2d; color: #fff; text-align: center; }

@media (min-width: 864px) {
  .landing { padding: 24px; }
  .poster-card { width: min(863px, calc(100vw - 48px), calc((100dvh - 48px) * .4734)); border: 1px solid rgba(77, 190, 255, .22); border-radius: 24px; box-shadow: 0 36px 115px rgba(0,0,0,.82), 0 0 90px rgba(0, 111, 255, .17); }
  .poster-art { border-radius: inherit; }
}
@media (max-width: 863px) {
  .ambient { display: none; }
  .landing { align-items: start; }
  .poster-card { width: 100vw; }
  .poster-footer { display: none; }
}
@supports not (font-size: 1cqw) {
  .brand-copy strong { font-size: clamp(13px, 3.65vw, 31px); }
  .hero-copy h1 { font-size: clamp(25px, 6.85vw, 59px); }
  .feature-item strong { font-size: clamp(10px, 2.72vw, 23px); }
  .feature-item span { font-size: clamp(8px, 2.12vw, 18px); }
  .download-button { font-size: clamp(14px, 3.35vw, 29px); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}