:root {
  --bg: #ffffff;
  --fg: #0a0a0a;
  --muted: #666;
  --line: #e5e5e5;
  --accent: #0a0a0a;
  --card: #f8f8f8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Noto Sans JP", "Hiragino Sans", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { height: 36px; width: auto; }
.brand-name { font-weight: 700; letter-spacing: 0.04em; }

.nav { display: flex; gap: 18px; font-weight: 600; }
.nav a { position: relative; padding: 6px 0; }
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 180ms ease;
}
.nav a:hover::after { width: 100%; }

.hero {
  padding: 120px 0 90px;
  background: linear-gradient(135deg, #fff, #f4f4f4);
}
.hero-inner { max-width: 720px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.2em; font-size: 12px; color: var(--muted); margin: 0 0 14px; }
.hero h1 { font-size: clamp(32px, 5vw, 48px); margin: 0 0 14px; line-height: 1.2; }
.lead { font-size: 17px; color: #333; margin: 0 0 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.section { padding: 80px 0; }
.section-alt { background: #fafafa; }
.section-head { margin-bottom: 32px; }
.section-head h2 { margin: 0 0 8px; font-size: 26px; }
.section-head p { margin: 0; color: var(--muted); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.about-block { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.about-block h3 { margin: 0 0 10px; font-size: 18px; }
.about-block p { margin: 0 0 6px; }
.meta { color: var(--muted); font-size: 14px; }

.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
}
.card-logo { padding: 18px; border-bottom: 1px solid var(--line); background: var(--card); display: grid; place-items: center; }
.card-logo img { max-height: 72px; object-fit: contain; }
.card-body { padding: 18px; display: grid; gap: 8px; }
.pill { display: inline-block; align-self: start; padding: 6px 10px; border: 1px solid var(--fg); border-radius: 999px; font-size: 12px; letter-spacing: 0.02em; }
.card h3 { margin: 0; font-size: 18px; }
.card p { margin: 0; color: #2c2c2c; }

.info-table { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.info-table .row { display: grid; grid-template-columns: 120px 1fr; border-bottom: 1px solid var(--line); padding: 14px 16px; gap: 10px; }
.info-table .row:last-child { border-bottom: none; }
.info-table span:first-child { color: var(--muted); font-weight: 600; }

.contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.contact-cta { display: grid; gap: 6px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1.5px solid var(--fg);
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease, color 120ms ease;
}
.btn.primary { background: var(--fg); color: var(--bg); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0,0,0,0.15); }
.btn.ghost { background: transparent; color: var(--fg); }
.btn.ghost:hover { background: var(--fg); color: var(--bg); }

.footer { border-top: 1px solid var(--line); padding: 18px 0; background: #fff; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; }

@media (max-width: 640px) {
  .nav { display: none; }
  .header-inner { padding: 12px 0; }
  .hero { padding: 90px 0 70px; }
  .info-table .row { grid-template-columns: 1fr; }
}