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

  :root {
    --paper:      #fdfbf5;
    --white:      #ffffff;
    --ink:        #1c2b36;
    --ink-soft:   #46565f;
    --navy:       #0b3a52;
    --blue:       #18aee2;
    --blue-deep:  #0e7fb0;
    --blue-pale:  #e4f5fc;
    --amber:      #f0a020;
    --amber-pale: #fdf3df;
    --line:       #d8dfe3;
    --maru: 'Zen Maru Gothic', sans-serif;
    --kaku: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
  }

  body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--kaku);
    font-size: 17.5px;
    line-height: 2.0;
  }
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(rgba(24,174,226,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(24,174,226,.045) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
    z-index: 0;
  }

  a { color: var(--blue-deep); }
  :focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

  .topbar {
    background: var(--white);
    border-bottom: 3px solid var(--navy);
    position: relative;
    z-index: 2;
  }
  .topbar-inner {
    max-width: 860px;
    margin: 0 auto;
    padding: 14px clamp(18px, 4vw, 32px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }
  .logo {
    font-family: var(--maru);
    font-weight: 900;
    font-size: 22px;
    color: var(--navy);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 9px;
  }
  .logo .pin {
    width: 28px; height: 28px;
    background: var(--blue);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .logo .pin::after { content: ''; width: 10px; height: 10px; background: #fff; border-radius: 50%; }

  main {
    position: relative;
    z-index: 1;
    max-width: 860px;
    margin: 0 auto;
    padding: clamp(24px, 5vw, 48px) clamp(18px, 4vw, 32px) 60px;
  }

  .breadcrumb {
    font-size: 14px;
    color: var(--ink-soft);
    margin-bottom: 22px;
  }
  .breadcrumb a { text-decoration: none; font-weight: 700; }

  .tags { display: flex; gap: 8px; margin-bottom: 14px; }
  .tag {
    font-size: 14px;
    font-weight: 700;
    border-radius: 999px;
    padding: 4px 16px;
    background: var(--amber-pale);
    color: #7a5200;
    border: 1.5px solid var(--amber);
  }
  .tag.blue { background: var(--blue-pale); color: var(--navy); border-color: var(--blue); }

  h1 {
    font-family: var(--maru);
    font-weight: 900;
    font-size: clamp(30px, 5.5vw, 44px);
    line-height: 1.4;
    color: var(--navy);
    margin-bottom: 16px;
  }

  .lead {
    font-size: clamp(17px, 2.4vw, 19.5px);
    font-weight: 500;
    margin-bottom: 28px;
  }

  /* CTA */
  .cta-block {
    background: var(--white);
    border: 2px solid var(--ink);
    border-radius: 20px;
    box-shadow: 5px 5px 0 rgba(28,43,54,.12);
    padding: 18px;
    margin-bottom: 40px;
    text-align: center;
  }
  .cta-block img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1.5px solid var(--line);
    display: block;
    margin-bottom: 16px;
  }
  .btn-open {
    display: inline-block;
    background: var(--blue-deep);
    color: #fff;
    font-family: var(--maru);
    font-weight: 900;
    font-size: 21px;
    padding: 18px 48px;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 5px 0 rgba(11,58,82,.4);
    transition: transform .12s, box-shadow .12s;
  }
  .btn-open:hover { transform: translateY(-2px); box-shadow: 0 7px 0 rgba(11,58,82,.4); }
  .cta-note { font-size: 14px; color: var(--ink-soft); margin-top: 12px; }

  h2 {
    font-family: var(--maru);
    font-weight: 900;
    font-size: clamp(23px, 3.6vw, 29px);
    color: var(--navy);
    margin: 48px 0 18px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  h2::before {
    content: '';
    width: 12px; height: 26px;
    background: var(--blue);
    border-radius: 4px;
    flex: 0 0 auto;
  }

  ul.points { list-style: none; display: grid; gap: 10px; }
  ul.points li {
    background: var(--white);
    border: 2px solid var(--line);
    border-radius: 12px;
    padding: 13px 18px 13px 46px;
    position: relative;
    font-weight: 500;
  }
  ul.points li::before {
    content: '✓';
    position: absolute;
    left: 16px;
    color: var(--blue-deep);
    font-weight: 900;
    font-size: 19px;
  }

  ol.steps { list-style: none; counter-reset: step; display: grid; gap: 12px; }
  ol.steps li {
    counter-increment: step;
    background: var(--white);
    border: 2px solid var(--line);
    border-radius: 12px;
    padding: 15px 18px 15px 62px;
    position: relative;
  }
  ol.steps li::before {
    content: counter(step);
    position: absolute;
    left: 16px; top: 50%;
    transform: translateY(-50%);
    width: 32px; height: 32px;
    background: var(--navy);
    color: #fff;
    font-family: var(--maru);
    font-weight: 900;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
  }
  ol.steps li strong { color: var(--navy); }

  table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    font-size: 15.5px;
    border: 2px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
  }
  th, td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
  th { background: var(--blue-pale); color: var(--navy); font-weight: 700; }
  tbody tr:nth-child(even) td { background: #fafdff; }

  details {
    margin-top: 14px;
    background: var(--white);
    border: 2px solid var(--line);
    border-radius: 12px;
    padding: 14px 18px;
  }
  summary {
    font-weight: 700;
    color: var(--blue-deep);
    cursor: pointer;
    font-size: 16.5px;
  }
  details table { margin-top: 12px; border: 1px solid var(--line); }

  .faq-item {
    background: var(--white);
    border: 2px solid var(--line);
    border-radius: 14px;
    padding: 18px 22px;
    margin-bottom: 12px;
  }
  .faq-item h3 {
    font-family: var(--maru);
    font-weight: 900;
    font-size: 18px;
    color: var(--navy);
    margin-bottom: 6px;
    display: flex;
    gap: 10px;
  }
  .faq-item h3::before { content: 'Q'; color: var(--blue-deep); }
  .faq-item p { font-size: 16px; color: var(--ink-soft); }

  .note {
    background: var(--amber-pale);
    border: 2px solid var(--amber);
    border-radius: 14px;
    padding: 16px 20px;
    font-size: 15.5px;
    line-height: 1.9;
  }

  .history { font-size: 15px; color: var(--ink-soft); }
  .history li { margin-left: 1.4em; }

  .bottom-cta { text-align: center; margin: 52px 0 8px; }

  footer {
    background: var(--white);
    border-top: 3px solid var(--navy);
    padding: 26px 0 34px;
    text-align: center;
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 2;
    position: relative;
    z-index: 1;
  }