:root {
  --bg: #FCEFD9;
  --surface: #FFFFFF;
  --text: #1F2A3D;
  --muted: #5B6578;
  --accent: #253A6B;
  --fill: #FFF1D6;
  --border: #EADFC8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161F;
    --surface: #1B2130;
    --text: #EEF1F6;
    --muted: #A7B0C0;
    --accent: #FFD58A;
    --fill: #2A3246;
    --border: #2E3649;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

header.hero {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

header.hero img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  flex-shrink: 0;
}

h1 { font-size: 1.6rem; line-height: 1.3; margin: 0; }
h2 { font-size: 1.2rem; margin: 40px 0 8px; padding-top: 8px; border-top: 1px solid var(--border); }
h3 { font-size: 1rem; margin: 24px 0 4px; }
p, li { color: var(--text); }
.lead { color: var(--muted); margin: 4px 0 0; }
.muted { color: var(--muted); font-size: 0.9rem; }

a { color: var(--accent); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 20px;
  margin: 16px 0;
}

.contact {
  background: var(--fill);
  border-radius: 16px;
  padding: 16px 20px;
  margin: 24px 0;
}

.contact a { font-weight: 700; word-break: break-all; }

nav.links { margin-top: 48px; font-size: 0.9rem; }
nav.links a { margin-right: 16px; }

footer { margin-top: 24px; color: var(--muted); font-size: 0.8rem; }