/* Unarrow product page. Dark only, like the app: deep space blue, glass panels, neon accents (Palette, ShapeTheme). */
:root {
  --bg-top: #0D1236;
  --bg: #03040B;
  --ink: #EEF2FF;
  --muted: #8E96C8;
  --glass: rgba(255, 255, 255, .06);
  --glass-line: rgba(255, 255, 255, .13);
  --star: #FFC94D;
  --cyan: #3FF2E6;
  --gold: #FFD23F;
  --blue: #5AA8FF;
  --orange: #FF9A3C;
  --green: #8CFF5A;
  --pink: #FF4FD8;
  --violet: #A27BFF;
  --mint: #3CFFB0;
  --round: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", "Nunito", system-ui, sans-serif;
  --text: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI", system-ui, sans-serif;
  --wrap: 1120px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg) radial-gradient(120% 70% at 50% 0%, var(--bg-top) 0%, #070A1E 45%, var(--bg) 100%) no-repeat;
  color: var(--ink);
  font: 17px/1.6 var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
:lang(ja) body, body:lang(ja) { line-height: 1.75; }
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--round); font-weight: 800; line-height: 1.12; margin: 0; letter-spacing: -.01em; }
p { margin: 0; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }

#stars { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(3, 4, 11, .55); border-bottom: 1px solid rgba(255, 255, 255, .06); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--round); font-weight: 800; font-size: 19px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.langs { display: flex; gap: 2px; padding: 3px; border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-line); }
.langs a { padding: 4px 11px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--muted); text-decoration: none; }
.langs a[aria-current="true"] { background: rgba(255, 255, 255, .14); color: var(--ink); }

/* Hero */
.hero { position: relative; padding: 56px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 40px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.hero h1 { font-size: clamp(44px, 7vw, 84px); margin: 18px 0 20px; }
.hero h1 em { font-style: normal; color: var(--gold); text-shadow: 0 0 28px rgba(255, 210, 63, .45); }
.lead { font-size: clamp(17px, 2vw, 20px); color: #C9CFF0; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; margin-top: 32px; }
.store {
  display: inline-flex; align-items: center; gap: 10px; padding: 11px 22px 11px 18px; border-radius: 14px;
  background: #fff; color: #000; text-decoration: none; transition: transform .15s, box-shadow .15s;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .2), 0 10px 40px rgba(63, 242, 230, .18);
}
.store:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(255, 255, 255, .3), 0 14px 50px rgba(63, 242, 230, .3); }
.store svg { width: 26px; height: 26px; flex: none; }
.store span { display: flex; flex-direction: column; line-height: 1.1; }
.store small { font-size: 11px; font-weight: 500; }
.store b { font-size: 20px; font-weight: 600; letter-spacing: -.01em; }
.facts { font-size: 14px; color: var(--muted); }

.stage { position: relative; display: grid; place-items: center; min-height: 600px; }
.stage .solid { position: absolute; mix-blend-mode: screen; pointer-events: none; animation: float 9s ease-in-out infinite; }
.stage .ico { width: 560px; left: 50%; top: 50%; translate: -50% -50%; opacity: .5; filter: blur(1.5px) saturate(1.2); animation: none; }
.stage .cube { width: 150px; left: 0; bottom: 40px; animation-delay: -3s; z-index: 1; }
.stage .anti { width: 150px; right: 0; top: 50px; animation-delay: -6s; z-index: 1; }
.phone {
  position: relative; width: 270px; aspect-ratio: 886 / 1920; border-radius: 42px; padding: 9px;
  background: linear-gradient(160deg, #2A2F4A, #0B0E1D 40%, #1B1F33);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .12), 0 30px 80px rgba(0, 0, 0, .7), 0 0 120px rgba(63, 242, 230, .12);
}
.phone video { width: 100%; height: 100%; object-fit: cover; border-radius: 34px; background: #05070F; }
@keyframes float { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-14px) rotate(2deg); } }

/* Sections */
section { padding: 72px 0; }
.head { max-width: 640px; margin-bottom: 40px; }
.head h2 { font-size: clamp(32px, 4.4vw, 48px); margin-bottom: 14px; }
.head p { color: var(--muted); font-size: 18px; }
.center { text-align: center; margin-inline: auto; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; }
.step { position: relative; padding: 26px 24px 24px; border-radius: 22px; background: var(--glass); border: 1px solid var(--glass-line); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 18px;
  border-radius: 12px; font: 800 18px var(--round); color: var(--c); border: 1.5px solid var(--c); box-shadow: 0 0 18px color-mix(in srgb, var(--c) 45%, transparent), inset 0 0 12px color-mix(in srgb, var(--c) 30%, transparent); }
.step h3 { font-size: 21px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 16px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { padding: 26px 24px; border-radius: 22px; background: linear-gradient(180deg, color-mix(in srgb, var(--c) 9%, transparent), transparent 70%), var(--glass);
  border: 1px solid color-mix(in srgb, var(--c) 28%, var(--glass-line)); }
.feature.wide { grid-column: span 2; }
.feature h3 { font-size: 21px; margin-bottom: 8px; color: var(--c); text-shadow: 0 0 22px color-mix(in srgb, var(--c) 45%, transparent); }
.feature p { color: #C2C8EA; font-size: 16px; }
.feature ul { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.feature li { display: flex; gap: 10px; font-size: 15px; color: #C2C8EA; }
.feature li b { color: var(--ink); font-weight: 650; }
.feature li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 9px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }

.shapes { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.shapes span { padding: 5px 12px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--c);
  border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); background: color-mix(in srgb, var(--c) 10%, transparent); }

.gallery { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 6px 16px 18px;
  margin-inline: calc(50% - 50vw); padding-inline: max(16px, calc(50vw - var(--wrap) / 2)); scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.2) transparent; }
.gallery img { flex: none; width: 250px; aspect-ratio: 1206 / 2622; border-radius: 28px; scroll-snap-align: center;
  border: 1px solid var(--glass-line); box-shadow: 0 20px 60px rgba(0, 0, 0, .5); background: #070A18; }

.faq { display: grid; gap: 12px; max-width: 760px; }
.faq details { border-radius: 18px; background: var(--glass); border: 1px solid var(--glass-line); padding: 0 22px; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 650; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 24px/1 var(--round); color: var(--muted); transition: rotate .2s; }
.faq details[open] summary::after { rotate: 45deg; }
.faq details p { padding: 0 0 20px; color: #C2C8EA; font-size: 16px; }
.faq a, .prose a { color: var(--cyan); text-decoration-color: rgba(63, 242, 230, .4); text-underline-offset: 3px; }

.final { text-align: center; padding: 96px 0 110px; }
.final img { width: 112px; height: 112px; border-radius: 26px; margin: 0 auto 26px; box-shadow: 0 0 0 1px rgba(255,255,255,.1), 0 0 80px rgba(63, 242, 230, .25); }
.final h2 { font-size: clamp(34px, 5vw, 56px); margin-bottom: 14px; }
.final p { color: var(--muted); margin-bottom: 30px; }
.final .cta { justify-content: center; }

footer { border-top: 1px solid rgba(255, 255, 255, .07); padding: 30px 0 40px; font-size: 14px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px 28px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }
.legal { flex-basis: 100%; font-size: 12px; color: #5D6490; }

/* Text pages (privacy) */
.prose { max-width: 720px; padding: 56px 0 80px; }
.prose h1 { font-size: clamp(34px, 5vw, 48px); margin-bottom: 26px; }
.prose h2 { font-size: 21px; margin: 34px 0 10px; }
.prose p { color: #C9CFF0; margin-bottom: 12px; }
.prose .meta { color: var(--muted); font-size: 15px; }

@media (max-width: 900px) {
  .hero { padding-top: 36px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  .lead { margin-inline: auto; }
  .cta { justify-content: center; }
  .eyebrow { justify-content: center; }
  .stage { min-height: 520px; }
  .stage .ico { width: 420px; }
  .stage .cube { left: calc(50% - 250px); }
  .stage .anti { right: calc(50% - 250px); }
  .phone { width: 240px; }
  .features, .steps { grid-template-columns: 1fr 1fr; }
  .feature.wide { grid-column: span 2; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  section { padding: 56px 0; }
  .features, .steps { grid-template-columns: 1fr; }
  .feature.wide { grid-column: auto; }
  .stage .ico { width: 340px; }
  .stage .cube { width: 110px; left: 0; }
  .stage .anti { width: 110px; right: 0; }
  .gallery img { width: 210px; border-radius: 24px; }
  .langs a { padding: 4px 9px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stage .solid { animation: none; }
}