@layer page {
  /* Page-specific styles for pta-membership-template-admin.html */
  :root {
    --ink: #172a3a;
    --muted: #5d6b78;
    --line: #d8e3ea;
    --blue: #174a73;
    --blue-dark: #0f304d;
    --pale: #f4f8fb;
    --accent: #b33a3a;
    --green: #2f6f4e;
    --bg: #ffffff;
  }

  * {
    box-sizing: border-box;
  }

  body {
    margin: 0;
    color: var(--ink);
    background: var(--bg);
    font-family:
      -apple-system, BlinkMacSystemFont, "Hiragino Sans",
      "Hiragino Kaku Gothic ProN", Meiryo, Arial, sans-serif;
    line-height: 1.88;
    letter-spacing: 0.01em;
  }

  a {
    color: #0e5f94;
  }

  .site-header {
    background: linear-gradient(135deg, var(--blue-dark), #092238);
    color: #fff;
    padding: 30px 0 28px;
  }

  .wrap {
    max-width: 980px;
    margin: auto;
    padding: 0 20px;
  }

  .crumb {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 12px;
  }

  h1 {
    font-size: clamp(1.75rem, 4vw, 2.45rem);
    line-height: 1.35;
    margin: 0 0 0.5em;
  }

  .site-header p {
    max-width: 820px;
    margin: 0;
    color: #eef6fd;
    font-size: 1.02rem;
  }

  main {
    padding: 38px 0 64px;
  }

  section {
    margin: 0 0 42px;
  }

  h2 {
    font-size: 1.42rem;
    line-height: 1.45;
    border-left: 6px solid var(--blue);
    padding-left: 14px;
    margin: 38px 0 14px;
  }

  p {
    margin: 0 0 1em;
  }

  .lead {
    font-size: 1.07rem;
  }

  .notice {
    background: var(--pale);
    border: 1px solid var(--line);
    border-left: 6px solid var(--blue);
    padding: 18px 20px;
    margin: 22px 0;
  }

  .warn {
    background: #fff8f0;
    border-color: #f0d1aa;
    border-left-color: var(--accent);
  }

  .button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 26px 0 10px;
  }

  .button {
    display: inline-block;
    background: var(--green);
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    border-radius: 999px;
    padding: 14px 24px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.12);
  }

  .button.secondary {
    background: var(--blue);
  }

  .button:hover {
    filter: brightness(0.95);
  }

  .sub {
    color: var(--muted);
    font-size: 0.92rem;
    margin-top: 8px;
  }

  .flow {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 16px 0;
  }

  .flow li {
    margin: 0.55em 0;
  }

  .footer {
    border-top: 1px solid var(--line);
    background: #f8fafc;
    padding: 24px 0;
    color: var(--muted);
    font-size: 0.92rem;
  }

  @media (max-width: 760px) {
    .wrap {
      padding: 0 16px;
    }
    .site-header {
      padding: 24px 0;
    }
  }
}