:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --fg: #14141c;
  --muted: #63636f;
  --accent: #3654e0;
  --accent-soft: #eef1ff;
  --border: #e6e6ec;
  --card-bg: #ffffff;
  --shadow: 0 1px 2px rgba(20, 20, 28, 0.04), 0 8px 24px rgba(20, 20, 28, 0.06);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-wrap: anywhere;
}
a { color: var(--accent); }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  padding: 1rem 1.5rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav .brand {
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--fg);
  font-size: 1.05rem;
  white-space: nowrap;
}
.nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 0;
  padding: 0;
}
.nav ul a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  position: relative;
  padding-bottom: 0.15rem;
  transition: color 0.15s ease;
}
.nav ul a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right 0.2s ease;
}
.nav ul a.active { color: var(--fg); }
.nav ul a.active::after { right: 0; }
@media (hover: hover) and (pointer: fine) {
  .nav ul a:hover { color: var(--fg); }
  .nav ul a:hover::after { right: 0; }
}

.hero {
  padding: 4.5rem 1.5rem 3.5rem;
  text-align: center;
  background:
    radial-gradient(60% 60% at 50% 0%, var(--accent-soft), transparent 70%);
}
.hero .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
  font-weight: 600;
}
.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  letter-spacing: -0.01em;
}
.hero p {
  margin: 0 auto;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.05rem;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
  scroll-margin-top: 4rem;
}
section:first-of-type { border-top: none; }
.section-head {
  margin-bottom: 1.75rem;
}
.section-head .label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}
.section-head h2 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}
section > p,
section > ul,
section > ol { max-width: 42rem; }
section ul,
section ol { padding-left: 1.2rem; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card > :first-child { margin-top: 0; }
.card > :last-child { margin-bottom: 0; }
.card + p { margin-top: 1.75rem; }
.contact-mail {
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
}
.contact-mail:hover { text-decoration: underline; }

.faq {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}
.faq li {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
}
.faq h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.faq p,
.faq ul {
  margin: 0.3rem 0 0;
  color: var(--muted);
}

/* プライバシーポリシー本文 */
.policy {
  padding: 3rem 0 3.5rem;
}
.policy h2 {
  margin: 2.75rem 0 0.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  scroll-margin-top: 4rem;
}
.policy h2:first-of-type {
  margin-top: 1.5rem;
}
.policy h3 {
  margin: 1.75rem 0 0.4rem;
  font-size: 1rem;
}
.policy p,
.policy ul {
  max-width: 46rem;
  margin: 0.6rem 0;
}
.policy ul { padding-left: 1.2rem; }
.policy .date {
  margin-top: 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.table-wrap {
  margin: 1rem 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th,
td {
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
thead th {
  border-top: none;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}
tbody th {
  width: 11rem;
  font-weight: 600;
}

dl.profile {
  margin: 0;
  display: grid;
  grid-template-columns: 9rem 1fr;
  row-gap: 0.9rem;
  column-gap: 1.5rem;
  font-size: 0.95rem;
}
dl.profile dt { color: var(--muted); }
dl.profile dd { margin: 0; }
dl.profile a { text-decoration: none; }
dl.profile a:hover { text-decoration: underline; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
}
footer nav {
  margin-bottom: 0.75rem;
}
footer nav a {
  color: var(--muted);
  text-decoration: none;
  margin: 0 0.6rem;
}
footer nav a:hover { color: var(--fg); }

@media (max-width: 640px) {
  .nav {
    justify-content: flex-start;
    padding: 0.9rem 1.25rem;
  }
  .nav ul {
    gap: 0.4rem 1rem;
  }
  .hero {
    padding: 3.5rem 1.25rem 3rem;
  }
  main {
    padding: 0 1.25rem;
  }
  section {
    padding: 2.5rem 0;
  }
  .policy {
    padding: 2rem 0 2.5rem;
  }
  tbody th {
    width: 7.5rem;
  }
  dl.profile {
    grid-template-columns: 1fr;
    row-gap: 0.3rem;
  }
  dl.profile dt {
    margin-top: 1rem;
    font-size: 0.85rem;
  }
  dl.profile dt:first-child {
    margin-top: 0;
  }
}

/* アプリ内 WebView 用(?embed=1): 本文だけを表示する */
.embed .nav,
.embed .hero,
.embed footer {
  display: none;
}
.embed .policy {
  padding: 0.5rem 0 1.5rem;
}
.embed .policy h2:first-of-type {
  margin-top: 0.5rem;
  padding-top: 0;
  border-top: none;
}