:root {
  --yellow: #fef08a;
  --yellow-soft: #fff9c7;
  --yellow-deep: #eab308;
  --ink: #334155;
  --muted: #64748b;
  --white: #ffffff;
  --line: #e2e8f0;
  --max: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--yellow-soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
}
a { color: inherit; }
.container { width: min(88%, var(--max)); margin-inline: auto; }

.site-header {
  padding: 1rem 0;
  background: rgba(255,255,255,.82);
  border-bottom: 1px solid rgba(226,232,240,.8);
}
.site-header .container, .footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand { display: flex; gap: .55rem; align-items: center; font-size: 1.2rem; font-weight: 800; text-decoration: none; }
.brand-logo { display: block; width: 112px; height: auto; }
nav { display: flex; gap: 1.25rem; }
nav a { color: var(--muted); font-size: .9rem; font-weight: 700; text-decoration: none; }
nav a:hover { color: var(--ink); }

.hero { background: var(--yellow); padding: 6.5rem 0 6rem; }
.hero-inner { text-align: center; }
.hero-logo { display: block; width: min(360px, 82%); height: auto; margin: 0 auto 2rem; border-radius: .5rem; }
.welcome { margin: 0 0 1rem; color: #a16207; font-size: 1.1rem; font-weight: 800; }
.eyebrow, .section-label {
  margin: 0 0 .8rem;
  color: #a16207;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .14em;
}
h1 { margin: 0; color: #475569; font-size: clamp(1.8rem, 4.5vw, 3rem); line-height: 1.25; letter-spacing: -.04em; }
.lead { margin: 2rem auto; color: #475569; font-size: clamp(1rem, 2.5vw, 1.25rem); }
.button { display: inline-block; padding: .9rem 1.4rem; border-radius: 999px; font-weight: 800; text-decoration: none; }
.button.primary { background: var(--ink); color: white; }

.section { padding: 4.5rem 0; }
.card {
  padding: clamp(1.7rem, 5vw, 3.5rem);
  background: var(--white);
  border-radius: 1rem;
  box-shadow: 0 14px 40px rgba(71,85,105,.08);
}
h2 { margin: 0 0 1.5rem; color: #475569; font-size: clamp(1.6rem, 4vw, 2.35rem); line-height: 1.4; }
.card p { max-width: 48rem; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.mini-card { padding: 1.7rem; background: white; border-radius: 1rem; }
.icon { font-size: 1.8rem; }
h3 { margin: .7rem 0 .5rem; font-size: 1.1rem; }
.mini-card p { margin: 0; color: var(--muted); font-size: .94rem; }

.link-list { display: grid; gap: .75rem; margin: 2rem 0 3rem; }
.link-card {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: .75rem;
  text-decoration: none;
  transition: transform .15s ease, border-color .15s ease;
}
.link-card:hover { transform: translateY(-2px); border-color: var(--yellow-deep); }
.link-card span { color: var(--muted); }
.policy-note { margin-top: 1.5rem; color: var(--muted); font-size: .95rem; }
.policy-note a { font-weight: 700; text-underline-offset: .2em; }
.closing { margin-top: 2rem; }
.enjoy { margin-bottom: 0; font-size: 1.25rem; font-weight: 800; }

footer { padding: 2rem 0; color: var(--muted); font-size: .85rem; }
footer a { text-decoration: none; }

@media (max-width: 700px) {
  .site-header nav { display: none; }
  .hero { padding: 4.5rem 0; }
  .section { padding: 2.5rem 0; }
  .grid { grid-template-columns: 1fr; }
  .link-card, .footer-inner { align-items: flex-start; flex-direction: column; }
}