:root {
  --bg: #0b0f1a;
  --bg-soft: #0f1424;
  --text: #e9eefc;
  --muted: #b7c2e8;
  --primary: #7aa2ff;
  --primary-strong: #5b86f7;
  --outline: #2b3553;
  --card: #111831;
  --success: #34d399;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 700px at 80% -10%, rgba(90, 132, 247, .25), transparent 60%),
    radial-gradient(1000px 500px at -10% 0%, rgba(52, 211, 153, .2), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Arial, sans-serif;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--outline);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.nav a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--outline);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 6px auto;
  background: var(--text);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: transform .06s ease, box-shadow .06s ease, background-color .2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(180deg, var(--primary), var(--primary-strong));
  color: #0a0f1d;
  box-shadow: 0 6px 16px rgba(122, 162, 255, .35);
}

.btn-outline {
  border-color: var(--outline);
  color: var(--text);
  background: transparent;
}

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .08);
}

/* Hero */
.hero {
  padding: 80px 0 40px;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #0a0f1d;
  background: linear-gradient(180deg, #a8ffdf, #72e3b9);
}

.hero h1 {
  margin: 14px 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
  letter-spacing: .3px;
}

.hero .sub {
  color: var(--muted);
  font-size: 16px;
  margin: 10px 0 22px;
}

.cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-notes {
  display: flex;
  gap: 18px;
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
}

/* Showcase (icon + intro image) */
.showcase .media-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
}

.showcase .media {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 14px;
  padding: 8px;
}

.showcase .media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}

/* Store badges */
.download .store-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.download .store-badges a {
  display: inline-flex;
  align-items: center;
  height: 56px;
  /* 統一の見た目高さ */
}

.download .store-badges img {
  display: block;
  height: 100%;
  /* 親の高さに合わせる */
  width: auto;
  vertical-align: middle;
}

/* Hero store badges: match button size */
.hero .store-badges {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: -12px;
  /* move further upward */
  padding-top: 0;
}

.hero .store-badges a {
  display: inline-flex;
  align-items: center;
  height: 66px;
  /* 1.2x scale of previous 60px for Google Play */
}

.hero .store-badges img {
  display: block;
  height: 100%;
  width: auto;
}

.hero .store-badges a[aria-label="Download on the App Store"] {
  height: 44px;
  /* 1.2x scale of previous 40px to match button feel */
}

/* hover lift removed */



/* Sections */
section {
  padding: 48px 0;
}

section h2 {
  font-size: 26px;
  margin: 0 0 18px;
}

/* Features grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 14px;
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

/* About */

/* Section lead note */

/* Lists & Chips */
.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.list li+li {
  margin-top: 6px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 14px;
}

.chip {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--outline);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--text);
  font-weight: 600;
  font-size: 12px;
}

/* Premium plan */
.premium .plan {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(122, 162, 255, .15);
}

.premium .plan-badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--primary), var(--primary-strong));
  color: #0a0f1d;
  font-weight: 800;
  font-size: 12px;
}

.premium .plan-title {
  margin: 10px 0 4px;
  font-size: 22px;
}

.premium .plan-sub {
  margin: 0 0 12px;
  color: var(--muted);
}

.premium .plan-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.premium .plan-features li {
  position: relative;
  padding-left: 24px;
  margin-top: 8px;
}

.premium .plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  transform: translateY(2px);
  color: var(--success);
  font-weight: 800;
}

.premium .plan-cta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
  flex-wrap: wrap;
}

.premium .plan-note {
  color: var(--muted);
  font-size: 13px;
}

.premium .plan-price {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--outline);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--text);
  font-weight: 800;
  letter-spacing: .2px;
}

/* Official */
.social {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.social a,
.social span {
  display: block;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.social a:hover {
  background: #162042;
}

/* Official - cards */
.social-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.social-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--outline);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  text-decoration: none;
}

.social-card .title {
  font-weight: 700;
}

.social-card .btn {
  margin-top: auto;
  display: inline-block;
  padding: 6px 10px;
  border-radius: 8px;
  background: #111;
  color: #fff;
  font-size: 14px;
}

.social-card.x .btn { background: #000; }
.social-card.ig .btn { background: #E1306C; }
.social-card.discord .btn { background: #5865F2; }
.social-card.threads .btn { background: #000; }
.social-card.tiktok .btn { background: #111; }


/* Tweets */

/* Footer */
.site-footer {
  border-top: 1px solid var(--outline);
  background: var(--bg-soft);
  padding: 22px 0;
  color: var(--muted);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav {
    position: fixed;
    top: 64px;
    right: 12px;
    left: 12px;
    flex-direction: column;
    gap: 12px;
    padding: 12px;
    background: var(--bg-soft);
    border: 1px solid var(--outline);
    border-radius: 12px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .15s ease, transform .15s ease;
  }

  .nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    padding-top: 56px;
  }

  .showcase .media-row {
    grid-template-columns: 1fr;
  }

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

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

  .social-cards {
    grid-template-columns: 1fr;
  }
}