:root {
  --brand: #1D6FEB;
  --brand-dark: #1457C4;
  --navy: #0F172A;
  --text: #1E293B;
  --text-2: #475569;
  --muted: #94A3B8;
  --bg: #F5F9FF;
  --line: rgba(29, 111, 235, 0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color: var(--text);
  line-height: 1.85;
  background:
    radial-gradient(90% 55% at 8% -6%, rgba(29,111,235,.12) 0%, rgba(29,111,235,.03) 42%, transparent 70%),
    linear-gradient(180deg, #EEF4FE 0%, #F7FAFF 40%, #FFFFFF 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* ── header ── */
.site-header {
  padding: 26px 20px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.site-header .inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #2A73F0, var(--brand-dark));
  display: flex; align-items: center; justify-content: center;
}
.logo svg { width: 20px; height: 20px; }
.brand-name { font-size: 19px; font-weight: 800; color: var(--navy); letter-spacing: -.02em; }
.brand-sub { font-size: 12px; color: var(--muted); font-weight: 600; }

/* ── layout ── */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}
.page-title {
  font-size: 27px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -.03em;
  line-height: 1.25;
  margin-bottom: 6px;
}
.updated { font-size: 12.5px; color: var(--muted); margin-bottom: 28px; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 22px;
  box-shadow: 0 1px 10px rgba(15, 23, 42, 0.05);
  margin-bottom: 18px;
}

h2 {
  font-size: 18px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -.02em;
  margin: 6px 0 10px;
}
.card + .card h2:first-child, .card h2:first-child { margin-top: 0; }

h3 { font-size: 15px; font-weight: 700; color: var(--navy); margin: 16px 0 6px; }

p { color: var(--text-2); font-size: 15px; margin-bottom: 10px; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 6px 0 12px 1.2em; }
li { color: var(--text-2); font-size: 15px; margin-bottom: 6px; }

a { color: var(--brand); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }

strong { color: var(--navy); font-weight: 700; }

.contact-box {
  display: inline-block;
  margin-top: 4px;
  padding: 10px 16px;
  background: rgba(29, 111, 235, 0.07);
  border-radius: 12px;
  font-weight: 700;
  color: var(--brand-dark);
}

.links-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 14px;
  background: #fff;
  border: 1.5px solid var(--line);
  font-weight: 700;
  color: var(--brand);
}
.pill:hover { border-color: var(--brand); text-decoration: none; }

/* ── footer ── */
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  border-top: 1px solid var(--line);
  text-align: center;
}
footer p { font-size: 12.5px; color: var(--muted); }
footer nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-bottom: 10px; }
footer nav a { font-size: 13px; }

/* ── responsive ── */
@media (max-width: 560px) {
  .page-title { font-size: 23px; }
  .card { padding: 18px 16px; border-radius: 16px; }
  main { padding: 26px 16px 52px; }
}