:root {
  --bg: #f9f6ff;
  /* アイコンに寄せた淡いラベンダー */
  --bg-alt: #ffffff;
  /* 純白 */
  --text-main: #262433;
  /* ほんのり紫みを含んだダークグレー */
  --text-muted: #7a748a;
  /* ラベンダー寄りのサブテキスト */
  --accent: #c3a4ff;
  /* #EBDCFF を引き締める少し濃いラベンダー */
  --accent-soft: #ebdcff;
  /* アプリアイコンの基調色 */
  --border-soft: #e4d8ff;
  /* うっすらラベンダーの境界線 */
  --max-width: 980px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  /* rem のベース */
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #ffffff 0, #f9f6ff 55%, #f1e9ff 100%);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  justify-content: center;
}

main {
  width: 100%;
  max-width: var(--max-width);
  padding: 24px 20px 64px;
}

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 8px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 0px;
  background-image: url('../images/app_icon.png');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-text-ja {
  font-size: 0.9375rem;
  /* 15px */
  letter-spacing: 0.14em;
}

.logo-text-en {
  font-size: 0.6875rem;
  /* 11px */
  color: var(--text-muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  border: none;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.8125rem;
  /* 13px */
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(120deg, #c3a4ff, #ebdcff);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(147, 118, 255, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(231, 167, 133, 0.45);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary span.icon {
  font-size: 0.875rem;
  /* 14px */
  margin-top: -1px;
}

.btn-ghost {
  border-radius: 999px;
  border: 1px solid rgba(120, 112, 170, 0.35);
  padding: 7px 14px;
  font-size: 0.6875rem;
  /* 11px */
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.btn-ghost:link,
.btn-ghost:visited {
  text-decoration: none;
  color: var(--text-muted);
}

.nav-links {
  display: none;
}

/* Hero */
section.hero {
  margin-top: 12px;
  padding: 32px 20px 36px;
  border-radius: 28px;
  background: radial-gradient(circle at top left, #ffffff 0, #f6f1ff 45%, #efe6ff 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: center;
}

.hero-kicker {
  font-size: 0.6875rem;
  /* 11px */
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.hero-title-ja {
  font-size: 1.625rem;
  /* 26px */
  line-height: 1.3;
  margin: 0 0 6px;
}

.hero-title-en {
  font-size: 1rem;
  /* 16px */
  line-height: 1.5;
  color: var(--text-muted);
  margin: 0 0 18px;
}

.hero-copy-ja,
.hero-copy-en {
  font-size: 0.875rem;
  /* 14px */
  line-height: 1.9;
  color: var(--text-muted);
}

.hero-copy-en {
  font-size: 0.8125rem;
  /* 13px */
  margin-top: 6px;
}

.hero-ctas {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.store-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.store-badge {
  font-size: 0.6875rem;
  /* 11px */
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(138, 121, 200, 0.25);
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  gap: 6px;
}

.store-badge span.icon {
  font-size: 0.8125rem;
  /* 13px */
}

.store-badge,
.store-badge:link,
.store-badge:visited {
  text-decoration: none;
  color: var(--text-main);
}

.hero-visual {
  position: relative;
  min-height: 220px;
}

.hero-card {
  position: absolute;
  inset: 10px 0 0;
  margin: auto;
  max-width: 320px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 40px rgba(88, 73, 130, 0.16);
  overflow: hidden;
  /* 下にはみ出した分は切り取り */
}

.hero-card-image {
  width: 100%;
  height: 240px;
  /* カード内の表示高さを固定 */
  border-radius: 20px;
  overflow: hidden;
}

.hero-card-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  /* 横幅いっぱいにフィット */
  object-position: top center;
  /* 上側を基準にトリミング */
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.hero-card-title {
  font-size: 0.75rem;
  /* 12px */
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero-chip {
  font-size: 0.625rem;
  /* 10px */
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #4b3b72;
}

.hero-card-main {
  padding: 10px 10px 12px;
  border-radius: 16px;
  background: linear-gradient(135deg, #ffffff, #f4efff);
}

.hero-card-line {
  font-size: 0.8125rem;
  /* 13px */
  margin-bottom: 6px;
}

.hero-card-sub {
  font-size: 0.6875rem;
  /* 11px */
  color: var(--text-muted);
}

.hero-card-footer {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.625rem;
  /* 10px */
  color: var(--text-muted);
}

.hero-moon {
  position: absolute;
  top: -32px;
  right: -20px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffffff 0, #f4ecff 40%, #e0ccff 70%, rgba(0, 0, 0, 0) 72%);
  opacity: 0.85;
}

.hero-fox-shadow {
  position: absolute;
  bottom: -8px;
  right: 20px;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-fox-shadow::after {
  content: "";
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background-image: url('../images/app_icon.png');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

/* Sections */
section {
  margin-top: 40px;
}

.section-inner {
  background: rgba(255, 255, 255, 0.96);
  border-radius: 24px;
  padding: 22px 20px 24px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

.section-label {
  font-size: 0.6875rem;
  /* 11px */
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.25rem;
  /* 20px */
  margin: 0 0 6px;
}

.section-subtitle {
  font-size: 0.875rem;
  /* 14px */
  color: var(--text-muted);
  margin: 0 0 14px;
}

.section-body {
  font-size: 0.875rem;
  /* 14px */
  line-height: 1.9;
  color: var(--text-main);
  white-space: pre-line;
}

.section-body p {
  margin: 0;
}

.feature-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 10px;
}

.feature-item {
  padding: 10px 12px;
  border-radius: 14px;
  background: #f6f1ff;
  border: 1px solid var(--border-soft);
  border: 1px solid var(--border-soft);
  border: 1px solid var(--border-soft);
}

.feature-title {
  font-size: 0.8125rem;
  /* 13px */
  font-weight: 600;
  margin-bottom: 2px;
}

.feature-desc {
  font-size: 0.8125rem;
  /* 13px */
  color: var(--text-muted);
}

.premium-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 4px;
}

.premium-tag {
  font-size: 0.6875rem;
  /* 11px */
  padding: 4px 10px;
  border-radius: 999px;
  background: #f3ecff;
  border: 1px solid #dfcffc;
  color: #3f365c;
}

.final-cta {
  text-align: center;
}

.final-cta .section-inner {
  padding: 28px 16px 30px;
}

.final-cta .section-title {
  font-size: 1.125rem;
  /* 18px */
  margin-bottom: 10px;
}

.final-cta p {
  font-size: 0.875rem;
  /* 14px */
  line-height: 1.9;
  color: var(--text-muted);
  margin: 4px 0 18px;
}

.final-cta .hero-ctas {
  justify-content: center;
}

footer.site-footer {
  margin-top: 36px;
  font-size: 0.6875rem;
  /* 11px 相当（既存と合わせてOK） */
  color: var(--text-muted);
  text-align: center;
}

footer.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links {
  margin-top: 6px;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  justify-content: center;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-separator {
  opacity: 0.6;
}

.policy-list {
  list-style: none;
  line-height: 1.0;
  white-space: inherit;
}

.back-link {
  margin-top: 20px;
  text-align: center;
}

.backyard-cta {
  margin-top: 18px;
  display: flex;
  justify-content: center;
}

.btn-backyard {
  font-size: 12px;
  padding: 8px 18px;
  gap: 6px;
}

.btn-backyard::after {
  content: "›";
  font-size: 12px;
  margin-left: 2px;
}


@media (min-width: 840px) {
  main {
    padding: 36px 0 80px;
  }

  header.site-header {
    padding: 6px 6px 12px;
  }

  .nav-links {
    display: flex;
    gap: 18px;
    font-size: 0.75rem;
    /* 12px */
    color: var(--text-muted);
  }

  .nav-links a {
    text-decoration: none;
    color: inherit;
  }

  .hero {
    padding: 40px 40px 42px;
  }

  .hero-title-ja {
    font-size: 1.625rem;
    /* 26px */
  }

  .hero-title-en {
    font-size: 1.0625rem;
    /* 17px */
  }

  .section-inner {
    padding: 26px 26px 28px;
  }

  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    order: -1;
  }

  .hero-card {
    position: relative;
  }

  .hero-card-image {
    height: 260px;
    /* モバイルでは少し縦長に */
  }

  .hero-moon {
    right: -30px;
    top: -36px;
  }
}