:root {
  --primary: #03A9F4;
  --primary-deep: #0288D1;
  --primary-soft: #B3E5FC;
  --primary-tint: #E8F6FE;
  --bg: #ffffff;
  --text: #141C29;
  --text-sub: #525E70;
  --text-mute: #8693a5;
  --line: #E6ECF2;
  --card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(20,28,41,.04), 0 2px 8px rgba(20,28,41,.04);
  --shadow-md: 0 4px 16px rgba(20,28,41,.06), 0 12px 32px rgba(20,28,41,.05);
  --shadow-lg: 0 24px 60px -20px rgba(2,136,209,.18), 0 12px 28px rgba(20,28,41,.06);
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --max: 1100px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans JP', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt";
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(20,28,41,.06);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: url('images/apple-touch-icon.png') center/cover;
  display: inline-block; flex: none;
  box-shadow: 0 4px 10px rgba(2,136,209,.32);
}
.brand-name { font-size: 17px; letter-spacing: .02em; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--text);
  color: white; font-weight: 700; font-size: 13px;
  padding: 8px 14px; border-radius: 999px;
}
.nav-cta:hover { opacity: .92; }
@media (max-width: 640px) { .nav-cta { display: none; } }

/* Language switcher (i18n) */
.nav-lang { display: flex; gap: 2px; align-items: center; }
.nav-lang a {
  padding: 5px 9px; border-radius: 8px;
  font-size: 12px; font-weight: 600; color: var(--text-sub);
  text-decoration: none; line-height: 1; letter-spacing: .03em;
}
.nav-lang a:hover { background: var(--primary-tint); color: var(--primary-deep); }
.nav-lang a.active {
  background: var(--primary); color: white;
}
@media (max-width: 480px) {
  .nav-lang a { padding: 4px 6px; font-size: 11px; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #EAF6FD 60%, #D8EEFA 100%);
  overflow: hidden;
  padding: 72px 0 96px;
}
.hero-deco { position: absolute; pointer-events: none; }
.hero-deco.cloud-1 { top: 80px; right: 6%; width: 90px; opacity: .55; }
.hero-deco.cloud-2 { top: 220px; left: 4%; width: 64px; opacity: .4; }
.hero-deco.drop-1 { top: 120px; right: 18%; width: 28px; opacity: .55; }
.hero-deco.drop-2 { top: 320px; right: 10%; width: 18px; opacity: .45; }
.hero-deco.sun { top: 60px; left: 8%; width: 56px; opacity: .35; }

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-copy h1 {
  font-size: clamp(34px, 5.2vw, 60px);
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.25;
  margin: 0 0 24px;
  text-wrap: pretty;
}
.hero-copy h1 .accent { color: var(--primary-deep); }
.hero-copy h1 .quote {
  background: linear-gradient(180deg, transparent 62%, rgba(179,229,252,.7) 62%);
  padding: 0 4px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: white;
  border: 1px solid var(--primary-soft);
  color: var(--primary-deep);
  font-size: 12px; font-weight: 700;
  padding: 6px 12px; border-radius: 999px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.hero-sub {
  font-size: 16px;
  color: var(--text-sub);
  margin: 0 0 28px;
  max-width: 480px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-row.center { justify-content: center; }

.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  background: #0a0a0a; color: white;
  padding: 12px 20px 12px 18px; border-radius: 14px;
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 6px 18px rgba(20,28,41,.18);
}
.store-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(20,28,41,.22); }
.store-btn svg { width: 26px; height: 26px; flex: none; }
.store-btn .label { display: flex; flex-direction: column; line-height: 1.1; text-align: left; white-space: nowrap; }
.store-btn .label small { font-size: 10px; opacity: .85; font-weight: 400; white-space: nowrap; }
.store-btn .label span { font-size: 17px; font-weight: 700; letter-spacing: .01em; white-space: nowrap; }

/* "Coming soon" non-interactive variant for Android (until the Play release) */
.store-btn-soon {
  background: transparent; color: var(--text-sub);
  border: 1.5px dashed rgba(2,136,209,.35);
  box-shadow: none; cursor: default;
}
.store-btn-soon:hover { transform: none; box-shadow: none; }
.store-btn-soon svg { opacity: .55; }
.store-btn-soon .label small { opacity: .7; }
.store-btn-soon .label span { color: var(--text); }

.hero-meta {
  display: flex; gap: 22px; margin-top: 28px;
  color: var(--text-sub); font-size: 13px; flex-wrap: wrap;
}
.hero-meta .check { color: var(--primary-deep); margin-right: 4px; font-weight: 800; }

/* ===== Phone frame ===== */
.phone {
  position: relative;
  width: 280px;
  aspect-ratio: 1284 / 2778;
  background: #0c1014;
  border-radius: 44px;
  padding: 9px;
  box-shadow:
    0 0 0 2px rgba(255,255,255,.5) inset,
    0 30px 60px -20px rgba(2,136,209,.25),
    0 18px 40px -10px rgba(20,28,41,.18);
  margin: 0 auto;
}
.phone::before {
  content: ""; position: absolute; left: 50%; top: 16px;
  transform: translateX(-50%);
  width: 92px; height: 28px; background: #0c1014; border-radius: 16px; z-index: 3;
}
.phone-screen {
  width: 100%; height: 100%;
  border-radius: 36px;
  overflow: hidden;
  background: white;
  position: relative;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.phone.lg { width: 320px; }
.phone.sm { width: 250px; }

.hero-phone-wrap {
  position: relative;
  display: grid; place-items: center;
}
.hero-phone-wrap::after {
  content: "";
  position: absolute; bottom: -18px; left: 10%; right: 10%;
  height: 30px;
  background: radial-gradient(ellipse at center, rgba(2,136,209,.22), transparent 70%);
  filter: blur(4px);
  z-index: -1;
}
.hero-badge {
  position: absolute;
  top: 20%; left: -10px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 14px;
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600;
  animation: float 6s ease-in-out infinite;
}
.hero-badge .ico {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--primary-tint); display: grid; place-items: center; color: var(--primary-deep);
  font-size: 16px;
}
.hero-badge.b2 {
  top: auto; bottom: 14%; left: auto; right: -16px;
  animation-delay: -3s;
}
.hero-badge .v { font-size: 11px; color: var(--text-sub); font-weight: 500; }
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ===== Section structure ===== */
section { padding: 96px 0; }
.section-eyebrow {
  color: var(--primary-deep);
  font-size: 12px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 900;
  margin: 0 0 16px;
  letter-spacing: -.005em;
  line-height: 1.35;
}
.section-lead {
  color: var(--text-sub);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}
.center { text-align: center; }

/* ===== Sub-head 3 points ===== */
.points {
  background: white;
  padding: 80px 0;
}
.points-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.point {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: left;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.point:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-soft);
}
.point-ico {
  width: 56px; height: 56px;
  border-radius: 16px;
  background: var(--primary-tint);
  display: grid; place-items: center;
  font-size: 28px;
  margin-bottom: 18px;
}
.point h3 { font-size: 17px; margin: 0 0 6px; font-weight: 700; }
.point p { font-size: 14px; color: var(--text-sub); margin: 0; }

/* ===== Audience ===== */
.audience {
  background: linear-gradient(180deg, white 0%, #FAFCFE 100%);
}
.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 40px;
}
.audience-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display: flex; gap: 16px; align-items: flex-start;
  font-size: 15px;
  line-height: 1.65;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.audience-card:hover { border-color: var(--primary-soft); box-shadow: var(--shadow-sm); }
.check-circle {
  flex: none;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary);
  display: grid; place-items: center;
  color: white; margin-top: 2px;
  box-shadow: 0 4px 8px rgba(3,169,244,.25);
}
.check-circle svg { width: 16px; height: 16px; }

/* ===== Feature blocks ===== */
.features { background: white; padding: 60px 0 96px; }
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 64px 0;
}
.feature.reverse .phone-col { order: 2; }
.feature-num {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary-deep);
  font-size: 13px; font-weight: 700;
  margin-bottom: 14px;
}
.feature-num .badge {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary);
  color: white;
  display: grid; place-items: center;
  font-size: 13px;
  font-weight: 800;
}
.feature h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.4;
  margin: 0 0 18px;
  letter-spacing: -.005em;
}
.feature p {
  color: var(--text-sub);
  font-size: 15.5px;
  margin: 0 0 12px;
  max-width: 460px;
}
.feature .note {
  font-size: 12.5px;
  color: var(--text-mute);
  background: var(--primary-tint);
  border-left: 3px solid var(--primary-soft);
  padding: 10px 14px;
  border-radius: 8px;
  margin-top: 18px;
  max-width: 460px;
  line-height: 1.6;
}

.phone-col {
  display: grid; place-items: center;
  position: relative;
}
.phone-col .blob {
  position: absolute;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--primary-soft), transparent 65%);
  z-index: -1;
  opacity: .7;
}

/* ===== Privacy ===== */
.privacy {
  background: var(--primary-tint);
  padding: 96px 0;
}
.privacy-inner {
  max-width: 760px; margin: 0 auto;
  text-align: center;
}
.privacy-shield {
  width: 64px; height: 64px;
  border-radius: 18px;
  background: white;
  display: grid; place-items: center;
  margin: 0 auto 24px;
  box-shadow: var(--shadow-sm);
  color: var(--primary-deep);
}
.privacy-shield svg { width: 32px; height: 32px; }
.privacy-list {
  list-style: none; padding: 0; margin: 36px 0 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  text-align: left;
}
.privacy-list li {
  background: white;
  border-radius: 16px;
  padding: 18px 20px;
  display: flex; gap: 14px; align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.65;
}
.privacy-list .check-circle { background: white; color: var(--primary-deep); border: 1.5px solid var(--primary); box-shadow: none; width: 24px; height: 24px; }
.privacy-list .check-circle svg { width: 14px; height: 14px; }

/* ===== Final CTA ===== */
.final-cta {
  background: white;
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta::before, .final-cta::after {
  content: ""; position: absolute;
  width: 240px; height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-soft), transparent 70%);
  opacity: .5;
}
.final-cta::before { top: -60px; left: -60px; }
.final-cta::after { bottom: -60px; right: -60px; }
.final-cta-inner { position: relative; z-index: 1; }
.final-cta h2 {
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 900;
  line-height: 1.4;
  margin: 0 0 16px;
  letter-spacing: -.01em;
}
.final-cta .sub {
  color: var(--text-sub); margin: 0 0 32px;
  font-size: 16px;
}

/* ===== Footer ===== */
footer {
  background: #F5F7FA;
  padding: 36px 0 28px;
  font-size: 13px;
  color: var(--text-sub);
}
.foot-related {
  max-width: var(--max); margin: 0 auto 24px;
  padding: 0 24px;
}
.foot-related-label {
  font-size: 12px; color: var(--text-mute); margin-bottom: 10px;
}
.foot-related-links { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.foot-related-links a {
  font-size: 13px; color: var(--text-sub);
  text-decoration: underline; text-decoration-color: rgba(82,94,112,.3);
}
.foot-related-links a:hover { color: var(--primary-deep); }
.foot-divider {
  max-width: var(--max); margin: 0 auto 20px; padding: 0 24px;
}
.foot-divider hr { border: none; border-top: 1px solid var(--line); }
.foot-inner {
  max-width: var(--max); margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.foot-brand { display: flex; align-items: center; gap: 10px; }
.foot-brand .brand-mark { width: 26px; height: 26px; border-radius: 8px; }
.foot-brand .brand-mark svg { width: 14px; height: 14px; }
.foot-brand small { color: var(--text-mute); }
.foot-brand .foot-brand-name { font-weight: 700; color: var(--text); }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-links a { text-decoration: underline; text-decoration-color: rgba(82,94,112,.3); }
.foot-links a:hover { color: var(--primary-deep); }

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .hero { padding: 56px 0 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .cta-row { justify-content: center; }
  .hero-meta { justify-content: center; }
  .hero-deco.cloud-2, .hero-deco.drop-2 { display: none; }

  section { padding: 64px 0; }

  .points-grid { grid-template-columns: 1fr; }

  .audience-grid { grid-template-columns: 1fr; }

  .feature {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 36px 0;
    text-align: center;
  }
  .feature p, .feature .note { margin-left: auto; margin-right: auto; }
  .feature.reverse .phone-col { order: 0; }
  .feature .phone-col { order: -1; }

  .privacy-list { grid-template-columns: 1fr; }

  .hero-badge { display: none; }
}

@media (max-width: 480px) {
  .wrap { padding: 0 18px; }
  .hero-copy h1 { font-size: 32px; }
  .phone { width: 240px; }
}