:root {
  --primary: #EA334F;
  --primary-dark: #C72B43;
  --primary-tint: #FDEDEF;
  --ink: #1F2328;
  --gray-600: #666666;
  --gray-400: #9AA0A6;
  --line: #EAEceF;
  --bg: #FFFFFF;
  --bg-alt: #FAFAF8;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(31, 35, 40, 0.06);
  --maxw: 960px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 26px; width: auto; display: block; }
.brand-sub { font-size: 13px; font-weight: 700; color: var(--gray-600); padding-left: 10px; border-left: 1px solid var(--line); }
.header-nav { display: flex; gap: 22px; font-size: 14px; font-weight: 600; }
.header-nav a { color: var(--gray-600); }
.header-nav a:hover { color: var(--ink); text-decoration: none; }

/* Hero */
.hero { background: linear-gradient(180deg, var(--primary-tint), #fff); padding: 56px 0 40px; }
.hero-inner { display: flex; align-items: center; gap: 28px; }
.hero-copy { flex: 1 1 auto; }
.eyebrow { color: var(--primary); font-weight: 800; font-size: 13px; letter-spacing: 0.08em; margin: 0 0 10px; }
.hero h1 { font-size: clamp(26px, 5vw, 40px); line-height: 1.3; margin: 0 0 14px; letter-spacing: 0.01em; }
.lead { color: var(--gray-600); font-size: 16px; margin: 0 0 24px; max-width: 38em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { flex: 0 0 auto; }
.hero-art img { width: clamp(140px, 26vw, 220px); height: auto; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px; border-radius: 999px;
  font-weight: 700; font-size: 15px; cursor: pointer; transition: transform .04s ease, background .15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-dark); }

/* Sections */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 24px; margin: 0 0 8px; letter-spacing: 0.01em; }
.section-title::after { content: ""; display: block; width: 40px; height: 4px; border-radius: 4px; background: var(--primary); margin-top: 10px; }
.section-note { color: var(--gray-600); margin: 0 0 28px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { color: var(--gray-600); font-size: 14.5px; margin: 0 0 18px; }
.card .btn { width: 100%; }
.card-highlight { border-color: var(--primary); box-shadow: 0 6px 22px rgba(234,51,79,0.16); }
.card-badge {
  position: absolute; top: -11px; left: 20px;
  background: var(--primary); color: #fff; font-size: 12px; font-weight: 800;
  padding: 4px 12px; border-radius: 999px;
}

/* Contact meta */
.contact-meta { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 10px; }
.contact-meta > div {
  background: var(--primary-tint); border-radius: 12px; padding: 12px 18px; min-width: 220px;
}
.meta-label { display: block; font-size: 12px; font-weight: 800; color: var(--primary-dark); letter-spacing: 0.04em; }
.meta-value { font-size: 15px; font-weight: 600; }
.contact-hint { color: var(--gray-400); font-size: 13px; margin-top: 14px; }

/* FAQ */
.faq-group { margin-bottom: 26px; }
.faq-group-title { font-size: 15px; color: var(--primary-dark); font-weight: 800; margin: 0 0 10px; letter-spacing: 0.02em; }
.faq {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  margin-bottom: 10px; overflow: hidden;
}
.faq summary {
  list-style: none; cursor: pointer; padding: 16px 48px 16px 18px; position: relative;
  font-weight: 700; font-size: 15.5px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
  font-size: 22px; font-weight: 400; color: var(--primary); transition: transform .2s ease;
}
.faq[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--primary-dark); }
.faq summary:focus-visible { outline: 3px solid rgba(234,51,79,0.4); outline-offset: -3px; }
.faq-body { padding: 0 18px 18px; }
.faq-body p { margin: 0; color: var(--gray-600); font-size: 14.5px; }

/* Links */
.link-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; }
.link-list a {
  display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; color: var(--ink); font-weight: 600; box-shadow: var(--shadow);
}
.link-list a:hover { border-color: var(--primary); color: var(--primary-dark); text-decoration: none; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: #fff; padding: 32px 0; margin-top: 8px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-logo { height: 22px; width: auto; display: block; }
.footer-company { margin: 0; font-size: 13px; color: var(--gray-600); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14px; }
.footer-nav a { color: var(--gray-600); }
.copyright { width: 100%; margin: 8px 0 0; color: var(--gray-400); font-size: 12.5px; }

@media (max-width: 640px) {
  .header-nav { display: none; }
  .hero-inner { flex-direction: column-reverse; align-items: flex-start; }
  .hero { padding: 40px 0 32px; }
  .section { padding: 44px 0; }
}