:root {
  color-scheme: light;
  --ink: #17201b;
  --muted: #5d6b63;
  --paper: #f6f4ee;
  --surface: #fffdf8;
  --line: #d9d3c6;
  --accent: #0f6b58;
  --accent-strong: #0a4f42;
  --gold: #b77717;
  --blue: #245c88;
  --shadow: 0 18px 48px rgba(42, 36, 22, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.75;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(90deg, rgba(15, 107, 88, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(15, 107, 88, 0.06) 1px, transparent 1px),
    var(--paper);
  background-size: 44px 44px;
}

a {
  color: var(--accent-strong);
  overflow-wrap: anywhere;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--blue);
}

.site-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-width: 0;
}

.topbar {
  border-bottom: 1px solid rgba(23, 32, 27, 0.12);
  background: rgba(246, 244, 238, 0.92);
}

.topbar .site-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 72px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-link img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: 0 6px 16px rgba(23, 32, 27, 0.18);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 18px;
  font-size: 0.94rem;
  font-weight: 700;
}

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

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 36px;
  align-items: end;
  padding: 54px 0 38px;
}

.hero-copy {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.eyebrow {
  margin: 0;
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.22;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 12em;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(2.25rem, 6vw, 4.7rem);
  font-weight: 800;
}

h2 {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(1.55rem, 3vw, 2.4rem);
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0;
  overflow-wrap: anywhere;
}

.lead {
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.hero-panel,
.section-panel,
.link-card,
.legal-block {
  border: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.94);
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  gap: 18px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 24px;
}

.app-mark {
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-mark img {
  width: 78px;
  height: 78px;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(23, 32, 27, 0.22);
}

.app-mark strong {
  display: block;
  font-size: 1.25rem;
}

.app-mark span,
.support-meta {
  color: var(--muted);
  font-size: 0.94rem;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fffdf8;
  font-weight: 800;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent-strong);
}

.button:hover {
  border-color: var(--blue);
  background: var(--blue);
  color: #fffdf8;
}

main {
  display: grid;
  gap: 28px;
  padding-bottom: 54px;
}

.section-panel {
  display: grid;
  gap: 24px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: clamp(22px, 4vw, 34px);
}

.section-head {
  display: grid;
  gap: 8px;
  max-width: 760px;
  min-width: 0;
}

.section-head p {
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  min-width: 0;
}

.link-card {
  display: grid;
  gap: 8px;
  min-height: 164px;
  min-width: 0;
  padding: 18px;
  box-shadow: none;
}

.link-card p,
.legal-block p,
.legal-block li {
  color: var(--muted);
}

.tag {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
}

.faq-list,
.legal-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-item,
.legal-block {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 18px;
  box-shadow: none;
}

.legal-page {
  padding-top: 42px;
}

.legal-layout {
  display: grid;
  gap: 18px;
  max-width: 880px;
}

.legal-meta {
  color: var(--muted);
  font-size: 0.94rem;
}

.legal-block ol,
.legal-block ul {
  margin: 0;
  padding-left: 1.25rem;
}

.footer {
  border-top: 1px solid rgba(23, 32, 27, 0.12);
  padding: 28px 0 34px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer .site-shell {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

@media (max-width: 780px) {
  .topbar .site-shell,
  .hero {
    grid-template-columns: 1fr;
  }

  .topbar .site-shell {
    display: grid;
    justify-items: start;
    padding: 14px 0;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 34px;
  }

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

  .button {
    width: 100%;
  }

  .footer .site-shell {
    display: grid;
  }
}