:root {
  --navy-950: #040b16;
  --navy-900: #071426;
  --navy-850: #0a1a30;
  --navy-800: #10233e;
  --navy-700: #173255;
  --blue: #18a8ff;
  --blue-strong: #087cf0;
  --cyan: #54d6ff;
  --white: #f7fbff;
  --muted: #a9bbd1;
  --line: rgba(170, 205, 236, .15);
  --glass: rgba(16, 35, 62, .70);
  --shadow: 0 30px 80px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--white);
  background:
    radial-gradient(circle at 8% 5%, rgba(24,168,255,.13), transparent 28%),
    radial-gradient(circle at 92% 30%, rgba(9,99,210,.14), transparent 32%),
    var(--navy-950);
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.7;
}
a { color: inherit; }
img { display: block; max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px clamp(20px, 5vw, 72px);
  background: rgba(4, 11, 22, .82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; letter-spacing: .03em; }
.brand img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }
.site-header nav { display: flex; gap: clamp(18px, 3vw, 38px); }
.site-header nav a { text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 700; }
.site-header nav a:hover { color: var(--white); }

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  align-items: center;
  gap: 7vw;
  padding: 100px clamp(24px, 7vw, 110px);
  border-bottom: 1px solid var(--line);
}
.hero__content, .hero__logo-card { position: relative; z-index: 2; }
.hero__content { max-width: 760px; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-size: 12px; font-weight: 900; letter-spacing: .2em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(54px, 8vw, 112px); line-height: .98; letter-spacing: -.06em; }
.hero__lead { max-width: 680px; margin: 30px 0 0; color: #bdd0e5; font-size: clamp(17px, 2vw, 22px); }
.hero__actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button, .store-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  transition: transform .22s ease, border-color .22s ease, background .22s ease;
}
.button:hover, .store-button:hover { transform: translateY(-2px); }
.button--primary { background: linear-gradient(135deg, var(--blue), var(--blue-strong)); box-shadow: 0 12px 35px rgba(8,124,240,.3); }
.button--secondary { border: 1px solid rgba(207,230,255,.2); background: rgba(255,255,255,.045); color: #d9e9fb; }
.hero__logo-card {
  justify-self: center;
  width: min(360px, 100%);
  padding: 36px;
  text-align: center;
  border: 1px solid rgba(149,203,255,.16);
  border-radius: 34px;
  background: linear-gradient(145deg, rgba(23,50,85,.78), rgba(7,20,38,.82));
  box-shadow: var(--shadow);
}
.hero__logo-card img { width: 220px; margin: 0 auto 22px; border-radius: 50%; }
.hero__logo-card p { margin: 0; color: #bcd0e5; font-weight: 700; }
.hero__glow { position: absolute; width: 440px; height: 440px; border-radius: 50%; filter: blur(70px); opacity: .25; }
.hero__glow--one { top: -180px; right: 5%; background: #008cff; }
.hero__glow--two { bottom: -220px; left: 28%; background: #063ca8; }

.section { padding: 110px clamp(24px, 7vw, 110px); }
.section-heading { max-width: 760px; margin-bottom: 70px; }
.section-heading--compact { margin-bottom: 34px; }
.section-heading h2, .about-card h2, .contact-card h2 { margin: 0 0 18px; font-size: clamp(36px, 5vw, 64px); line-height: 1.12; letter-spacing: -.04em; }
.section-heading > p:last-child, .about-card > p, .contact-card > p { color: var(--muted); font-size: 17px; }

.apps-section { background: linear-gradient(180deg, rgba(7,20,38,.28), rgba(4,11,22,0)); }
.app-row {
  display: grid;
  grid-template-columns: minmax(260px, 34%) 1fr;
  align-items: center;
  gap: clamp(44px, 7vw, 100px);
  max-width: 1180px;
  margin: 0 auto 120px;
  padding: clamp(26px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: 36px;
  background: linear-gradient(145deg, rgba(16,35,62,.72), rgba(7,20,38,.62));
  box-shadow: 0 18px 70px rgba(0,0,0,.18);
}
.app-row:last-child { margin-bottom: 0; }
.app-row--right .app-visual { order: 2; }
.app-row--right .app-copy { order: 1; }
.app-visual { display: flex; align-items: center; justify-content: center; }
.app-visual img { width: min(360px, 100%); aspect-ratio: 1 / 1; object-fit: cover; border-radius: 29%; box-shadow: 0 28px 70px rgba(0,0,0,.34); }
.status { display: inline-flex; margin-bottom: 16px; padding: 7px 12px; border: 1px solid rgba(84,214,255,.25); border-radius: 999px; background: rgba(24,168,255,.08); color: var(--cyan); font-size: 12px; font-weight: 900; }
.app-copy h3 { margin: 0; font-size: clamp(32px, 4vw, 54px); line-height: 1.15; letter-spacing: -.04em; }
.app-summary { margin: 18px 0 22px; color: #c1d3e7; font-size: 17px; }
.app-copy ul { margin: 0 0 30px; padding: 0; list-style: none; }
.app-copy li { position: relative; margin: 13px 0; padding-left: 30px; color: #d8e5f3; }
.app-copy li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 900; }
.store-button { min-height: 48px; background: #f4f8fc; color: #071426; }

.about-section { padding-top: 30px; }
.about-card, .contact-card {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 60px;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(34px, 6vw, 72px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background: rgba(16,35,62,.6);
}
.about-card > p { margin: 0; align-self: center; }

.media-section { max-width: 1400px; margin: 0 auto; }
.media-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 38px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(16,35,62,.58);
}
.media-badge { display: inline-block; margin-bottom: 10px; color: var(--cyan); font-size: 12px; font-weight: 900; }
.media-card h3 { margin: 0 0 8px; font-size: 27px; }
.media-card p { margin: 0; color: var(--muted); }
.media-card > a { flex: 0 0 auto; text-decoration: none; font-weight: 900; color: var(--cyan); }

.contact-section { padding-top: 40px; }
.contact-card { display: block; text-align: center; }
.contact-card .contact-actions { justify-content: center; }

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px clamp(24px, 7vw, 110px);
  border-top: 1px solid var(--line);
  color: #7f96af;
  font-size: 13px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; color: #d8e5f3; font-weight: 800; }
.footer-brand img { width: 34px; height: 34px; border-radius: 50%; }

@media (max-width: 860px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 80px; }
  .hero__logo-card { width: min(280px, 82vw); }
  .app-row { grid-template-columns: 1fr; gap: 34px; margin-bottom: 58px; border-radius: 28px; }
  .app-row--right .app-visual, .app-row--right .app-copy { order: initial; }
  .app-visual img { width: min(250px, 76vw); }
  .about-card { grid-template-columns: 1fr; gap: 10px; }
  .media-card { align-items: flex-start; flex-direction: column; }
  footer { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 520px) {
  .site-header { min-height: 66px; }
  .brand img { width: 38px; height: 38px; }
  .hero { padding-top: 64px; padding-bottom: 70px; }
  .hero__actions .button { width: 100%; }
  .section { padding-top: 76px; padding-bottom: 76px; }
  .app-row { padding: 24px 20px 30px; }
  .app-copy h3 { font-size: 34px; }
  .store-button { width: 100%; }
}