:root {
  --ink: #12263c;
  --muted: #64788d;
  --sky: #229ed9;
  --sky-dark: #1682b6;
  --line: #d7e9f2;
  --panel: #edf9fd;
  --shadow: 0 22px 70px rgba(19, 65, 95, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }

.hero {
  position: relative;
  isolation: isolate;
  min-height: 630px;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(125deg, #102b4c 0%, #183f66 52%, #156594 100%);
}
.hero::before, .hero::after {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  content: "";
}
.hero::before { width: 620px; height: 620px; top: -175px; right: -170px; background: rgba(74, 201, 242, .19); }
.hero::after { width: 280px; height: 280px; bottom: -185px; left: 42%; background: rgba(214, 247, 255, .08); }
.topbar { display: flex; align-items: center; justify-content: space-between; height: 94px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 21px; font-weight: 750; letter-spacing: -.4px; }
.brand-mark { display: grid; width: 35px; height: 35px; place-items: center; border-radius: 50%; background: var(--sky); color: #fff; }
.brand-mark svg { width: 20px; height: 20px; transform: translateX(-1px); }
.header-link { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.7); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.hero-content { display: flex; align-items: center; justify-content: space-between; min-height: 536px; gap: 40px; padding: 25px 0 70px; }
.hero-copy { position: relative; z-index: 2; width: min(650px, 100%); }
.eyebrow { display: flex; align-items: center; gap: 8px; margin: 0 0 18px; color: inherit; font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.eyebrow span { width: 22px; height: 2px; border-radius: 2px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(46px, 6vw, 78px); font-weight: 800; line-height: 1.12; letter-spacing: -.075em; }
h1 em { color: #89dcff; font-style: normal; }
.lead { margin-bottom: 32px; color: rgba(255,255,255,.8); font-size: 16px; line-height: 2; }
.hero-cta, .download-button { display: inline-flex; align-items: center; gap: 10px; min-height: 46px; border-radius: 6px; font-size: 13px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.hero-cta { padding: 13px 18px; background: #fff; color: #15456b; }
.hero-cta span { color: var(--sky); font-size: 18px; }
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 25px rgba(0,0,0,.18); }
.hero-cta.is-disabled { opacity: .76; cursor: not-allowed; }
.hero-cta.is-disabled:hover { transform: none; box-shadow: none; }

.hero-visual { position: relative; flex: 0 0 405px; height: 405px; }
.plane-disc { position: absolute; inset: 78px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; background: radial-gradient(circle at 35% 30%, #4abcf0, #1787c1 72%); box-shadow: 0 22px 65px rgba(5,22,41,.32), inset 0 1px rgba(255,255,255,.3); color: #fff; }
.plane-disc::before { position: absolute; inset: 16px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; content: ""; }
.plane-disc svg { position: relative; width: 112px; height: 112px; filter: drop-shadow(0 7px 10px rgba(0,0,0,.12)); }
.visual-orbit { position: absolute; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; }
.orbit-a { inset: 16px; border-style: dashed; transform: rotate(-18deg); }
.orbit-b { inset: 0; border-color: rgba(255,255,255,.09); }
.float-chip { position: absolute; padding: 8px 11px; border: 1px solid rgba(255,255,255,.24); border-radius: 5px; background: rgba(255,255,255,.12); box-shadow: 0 12px 25px rgba(8,31,54,.16); font-size: 10px; font-weight: 800; letter-spacing: .14em; backdrop-filter: blur(8px); }
.chip-one { top: 102px; left: 16px; }
.chip-two { right: 0; bottom: 98px; }

.download-section { padding: 118px 0 108px; }
.section-heading { max-width: 630px; margin-bottom: 50px; }
.section-heading .eyebrow { color: var(--sky); }
h2 { margin-bottom: 18px; font-size: clamp(36px, 4vw, 51px); line-height: 1.2; letter-spacing: -.06em; }
.section-heading > p:last-child { margin: 0; color: var(--muted); font-size: 15px; }
.android-panel { position: relative; display: flex; min-height: 416px; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg, var(--panel) 0%, #fff 66%); box-shadow: var(--shadow); }
.panel-copy { position: relative; z-index: 2; flex: 1 1 55%; align-self: center; padding: 48px 30px 48px 52px; }
.platform-label { display: block; margin-bottom: 8px; color: #56849d; font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.panel-copy h3 { margin-bottom: 9px; font-size: clamp(27px, 3.2vw, 39px); line-height: 1.25; letter-spacing: -.05em; }
.panel-copy p { max-width: 370px; margin-bottom: 27px; color: var(--muted); font-size: 14px; }
.download-button { padding: 11px 15px; border: 1px solid var(--sky); background: var(--sky); color: #fff; }
.download-button:hover { transform: translateY(-2px); background: var(--sky-dark); box-shadow: 0 12px 24px rgba(34,158,217,.25); }
.download-button.is-disabled { opacity: .72; cursor: not-allowed; }
.download-button.is-disabled:hover { transform: none; background: var(--sky); box-shadow: none; }
.button-icon { display: inline-grid; width: 18px; height: 18px; place-items: center; }
.button-icon svg { width: 18px; height: 18px; }
.panel-visual { position: relative; flex: 1 1 45%; min-height: 360px; overflow: hidden; }
.panel-circle { position: absolute; width: 440px; height: 440px; top: 48%; left: 45%; border-radius: 50%; transform: translate(-50%, -50%); background: #cceef8; }
.panel-visual img { position: absolute; z-index: 1; width: min(510px, 118%); right: -35px; bottom: -12px; object-fit: contain; }

footer { padding: 28px 0; background: #0d1d30; color: rgba(255,255,255,.65); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-brand { color: #fff; font-size: 16px; }
.footer-brand .brand-mark { width: 28px; height: 28px; }
.footer-brand .brand-mark svg { width: 16px; height: 16px; }
footer p { margin: 0; font-size: 11px; }
.toast { position: fixed; z-index: 10; bottom: 22px; left: 50%; width: min(480px, calc(100% - 36px)); padding: 13px 16px; border-radius: 7px; transform: translate(-50%, 20px); background: #102b4c; box-shadow: 0 14px 32px rgba(8,30,48,.25); color: #fff; font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .22s ease, transform .22s ease; }
.toast.is-visible { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 820px) {
  .hero { min-height: unset; }
  .hero-content { flex-direction: column; align-items: flex-start; min-height: unset; padding-top: 50px; }
  .hero-visual { align-self: center; width: min(405px, 92vw); flex-basis: auto; }
  .android-panel { min-height: 620px; flex-direction: column; }
  .panel-copy { flex: 0 0 auto; padding: 42px 34px 0; }
  .panel-visual { min-height: 340px; flex: 1 1 auto; }
  .panel-visual img { width: min(520px, 100%); right: 0; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 32px, 1120px); }
  .topbar { height: 76px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 31px; height: 31px; }
  .header-link { font-size: 10px; }
  .hero-content { padding: 34px 0 52px; }
  h1 { font-size: 45px; }
  .lead { font-size: 14px; }
  .hero-visual { height: min(360px, 85vw); }
  .plane-disc { inset: 17.5%; }
  .plane-disc svg { width: 95px; height: 95px; }
  .download-section { padding: 76px 0 68px; }
  .section-heading { margin-bottom: 34px; }
  h2 { font-size: 35px; }
  .android-panel { min-height: 562px; border-radius: 14px; }
  .panel-copy { padding: 32px 25px 0; }
  .panel-copy h3 { font-size: 29px; }
  .panel-copy p { font-size: 13px; }
  .panel-visual { min-height: 292px; }
  .panel-circle { width: 340px; height: 340px; }
  .panel-visual img { width: 460px; right: -40px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

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