:root {
  --navy: #0a43b8;
  --cyan: #22b8ff;
  --accent-grad: linear-gradient(135deg, #0a43b8 0%, #22b8ff 100%);
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--navy); }

/* Header */
header.legal {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
header.legal .inner {
  max-width: 860px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
header.legal .brand-logo { height: 32px; width: auto; display: block; }
header.legal .home {
  font-size: 14px; font-weight: 600; color: var(--ink-2); text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px;
  transition: border-color .15s ease, color .15s ease;
}
header.legal .home:hover { color: var(--navy); border-color: #9cc4f5; }

/* Document */
main.doc { max-width: 860px; margin: 0 auto; padding: 48px 24px 80px; }
main.doc .eyebrow {
  display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .12em;
  color: var(--navy); text-transform: uppercase; margin-bottom: 10px;
}
main.doc h1 { font-size: clamp(26px, 4vw, 34px); letter-spacing: -.01em; margin: 0 0 8px; }
main.doc .updated { color: var(--ink-3); font-size: 13.5px; margin: 0 0 36px; }
main.doc h2 {
  font-size: 19px; margin: 40px 0 12px; padding-top: 8px;
  border-top: 1px solid var(--line); padding-top: 28px;
}
main.doc h2:first-of-type { border-top: none; padding-top: 0; }
main.doc p { margin: 0 0 14px; color: var(--ink-2); font-size: 15.5px; }
main.doc ul, main.doc ol { margin: 0 0 16px; padding-left: 1.4em; color: var(--ink-2); font-size: 15.5px; }
main.doc li { margin-bottom: 8px; }
main.doc .lead { color: var(--ink-2); font-size: 16px; margin-bottom: 28px; }
.placeholder {
  background: #fff7ed; border: 1px dashed #fdba74; color: #9a3412;
  border-radius: 6px; padding: 1px 8px; font-size: 13.5px; font-weight: 600;
}
.note {
  background: var(--bg-soft); border: 1px solid var(--line); border-left: 4px solid var(--cyan);
  border-radius: 8px; padding: 14px 18px; font-size: 14px; color: var(--ink-2); margin: 24px 0;
}

/* Table (特商法) */
table.kv { width: 100%; border-collapse: collapse; margin: 8px 0 16px; font-size: 15px; }
table.kv th, table.kv td {
  border: 1px solid var(--line); padding: 14px 16px; text-align: left; vertical-align: top;
}
table.kv th {
  background: var(--bg-soft); color: var(--ink); font-weight: 700; width: 34%; white-space: nowrap;
}
table.kv td { color: var(--ink-2); }

/* Footer */
footer.legal {
  background: var(--ink); color: #94a3b8; text-align: center;
  padding: 32px 24px; font-size: 13px;
}
footer.legal a { color: #cbd5e1; text-decoration: none; margin: 0 10px; }
footer.legal a:hover { color: #fff; }
footer.legal .copy { margin-top: 14px; color: #64748b; }

@media (max-width: 600px) {
  table.kv th { width: 40%; white-space: normal; }
  main.doc { padding: 32px 20px 64px; }
}