body {
      font-family: system-ui, sans-serif;
      background: var(--bg);
      color: var(--text-main);
      margin: 0;
      padding: 0;
    }
.sitebar{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.sitebar-inner{
  max-width: 980px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sitebar-brand{
  text-decoration: none;
  font-weight: 700;
  color: inherit;
  letter-spacing: 0.02em;
}

.sitebar-link{
  text-decoration: none;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.12);
  background: rgba(255,255,255,0.6);
}

.sitebar-link:hover{
  background: rgba(0,0,0,0.04);
}

    header {
      text-align: center;
      padding: 40px 20px 10px;
    }

    h1 {
      font-size: 1.9rem;
      margin: 0;
    }

    .intro-wrapper {
      position: relative;
      width: 90%;
      max-width: 800px;
      margin: 25px auto 50px;
    }

    .intro {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--text-muted);
      background: var(--surface);
      padding: 25px 20px;
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: 0 4px 14px rgba(0,0,0,0.04);
      text-align: center;
    }

    /* --- Tanukicoon safe placement --- */
.tanuki {
  display: block;
  margin: 0 auto;
  margin-top: -40px;     /* 少しだけイントロに寄せる（完全に装飾扱い） */
  width: 120px;
  max-width: 35vw;
  pointer-events: none;
  opacity: 0.96;
}

@media (max-width: 500px) {
  .tanuki {
    width: 90px;
    margin-top: -6px;
  }
}
.card {
  max-width: 92vw;
  padding: 28px 22px;
}

.card p {
  line-height: 1.9;
  letter-spacing: 0.02em;
}


    .areas {
      width: 90%;
      max-width: 700px;
      margin: 0 auto;
      display: grid;
      gap: 20px;
    }

    .area-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 20px;
      text-align: left;
      transition: box-shadow 0.2s;
    }

    .area-card:hover {
      box-shadow: 0 6px 18px rgba(0,0,0,0.06);
    }

    .area-card h2 {
      margin-top: 0;
      margin-bottom: 8px;
      font-size: 1.3rem;
      color: var(--text-main);
    }

    .area-card p {
      margin: 0;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    .area-card a {
      display: inline-block;
      margin-top: 12px;
      font-weight: bold;
      color: var(--accent);
      text-decoration: none;
    }

    .disabled {
      opacity: 0.45;
      pointer-events: none;
    }

    footer {
      margin-top: 50px;
      text-align: center;
      padding: 20px;
      color: var(--text-muted);
    }
/* Page wrapper */
.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding-bottom: 48px;
}

/* Quiet note block (Level Zero explanation) */
.note {
  width: 90%;
  max-width: 680px;
  margin: 32px auto 20px;
  padding: 16px 18px;
  background: rgba(0,0,0,0.03);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
}

/* Paragraphs outside intro */
.wrap > p {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 16px auto;
  width: 90%;
  max-width: 640px;
}

/* Action links */
.actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin: 28px auto 12px;
}

.actions a {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  opacity: 0.85;
}

.actions a:hover {
  opacity: 1;
  border-bottom-color: var(--accent);
}


/* Footer */
footer {
  margin-top: 48px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}