:root {
  --ink: #1a1f2c;
  --ink-soft: #5c6578;
  --accent: #3b82f6;
  --bg: #f3f5f8;
  --font: "Manrope", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }
body.page {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 10% -10%, #e8f2ff, transparent 55%),
    var(--bg);
}

.page-header, .page-main, .page-footer {
  width: min(720px, calc(100% - 32px));
  margin-inline: auto;
}

.page-header {
  padding: 28px 0 12px;
}
.page-header h1 {
  margin: 12px 0 0;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}
.back {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

.page-main {
  padding: 12px 0 48px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 22px;
  padding: 24px;
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(30, 50, 90, 0.08);
}

.steps {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 12px;
  line-height: 1.6;
}
.note, .prose p {
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 0.95rem;
}
.prose h2 {
  margin-top: 1.6em;
  font-size: 1.05rem;
}
.prose a { color: var(--accent); }

.page-footer {
  display: flex;
  gap: 16px;
  padding: 8px 0 32px;
  font-size: 0.85rem;
}
.page-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}
.page-footer a:hover { color: var(--accent); }