:root {
    --bg: #fbfaf7;
    --surface: #ffffff;
    --ink: #1d2320;
    --muted: #5d6762;
    --line: #e4e2dc;
    --accent: #1f7a55;
    --accent-ink: #ffffff;
    --accent-soft: #e5f2ec;
    --radius: 14px;
  }
  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "Noto Sans JP", system-ui, -apple-system, sans-serif;
    line-height: 1.8;
    font-size: 16px;
  }
  .wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
  header.top {
    border-bottom: 1px solid var(--line);
    background: var(--surface);
  }
  header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
  .brand { font-weight: 700; letter-spacing: .02em; }
  .btn {
    display: inline-block;
    background: var(--accent);
    color: var(--accent-ink);
    text-decoration: none;
    font-weight: 700;
    padding: 14px 26px;
    border-radius: 999px;
    transition: transform .15s ease, opacity .15s ease;
  }
  .btn:hover { opacity: .92; }
  .btn:active { transform: scale(.98); }
  .btn.small { padding: 8px 16px; font-size: 14px; }

  .hero { padding: 72px 0 56px; }
  .eyebrow { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: .06em; margin: 0 0 12px; }
  h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.35; margin: 0 0 20px; text-wrap: balance; }
  .lead { color: var(--muted); font-size: 17px; max-width: 36em; margin: 0 0 28px; }
  .hero-note { color: var(--muted); font-size: 14px; margin-top: 14px; }

  section { padding: 56px 0; border-top: 1px solid var(--line); }
  h2 { font-size: clamp(22px, 3.4vw, 30px); line-height: 1.4; margin: 0 0 28px; text-wrap: balance; }

  .grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
  }
  .card h3 { font-size: 17px; margin: 0 0 8px; }
  .card p { margin: 0; color: var(--muted); font-size: 15px; }

  ul.checks { list-style: none; padding: 0; margin: 0; }
  ul.checks li { padding-left: 28px; position: relative; margin-bottom: 10px; }
  ul.checks li::before {
    content: ""; position: absolute; left: 0; top: .55em;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent-soft);
    box-shadow: inset 0 0 0 5px var(--accent);
  }

  .steps { counter-reset: s; display: grid; gap: 12px; }
  .step { display: flex; gap: 14px; align-items: flex-start; }
  .step::before {
    counter-increment: s; content: counter(s);
    flex: 0 0 32px; height: 32px; border-radius: 50%;
    background: var(--accent); color: var(--accent-ink);
    display: grid; place-items: center; font-weight: 700; font-size: 14px;
    margin-top: 2px;
  }
  .step b { display: block; }
  .step span { color: var(--muted); font-size: 15px; }

  .price { text-align: left; }
  .price .amount { font-size: 32px; font-weight: 700; line-height: 1.2; margin: 6px 0 2px; }
  .price .amount small { font-size: 15px; font-weight: 500; color: var(--muted); }
  .price .trial { display: inline-block; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 13px; padding: 2px 10px; border-radius: 999px; }
  .price.featured { border: 2px solid var(--accent); }
  .price ul { margin: 14px 0 0; padding-left: 1.2em; color: var(--muted); font-size: 15px; }

  .fine { color: var(--muted); font-size: 14px; margin-top: 18px; }

  details {
    background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 16px 20px; margin-bottom: 10px;
  }
  summary { cursor: pointer; font-weight: 700; list-style: none; }
  summary::-webkit-details-marker { display: none; }
  summary::before { content: "Q. "; color: var(--accent); }
  details p { margin: 10px 0 0; color: var(--muted); }

  .cta { text-align: center; background: var(--surface); }
  .cta p { color: var(--muted); }

  footer { padding: 32px 0 48px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }

  @media (max-width: 520px) {
    .hero { padding: 48px 0 40px; }
    section { padding: 44px 0; }
    .btn { display: block; text-align: center; }
    .btn.small { display: inline-block; }
  }

  /* form */
  .form { max-width: 560px; margin: 24px auto 0; text-align: left; display: grid; gap: 16px; }
  .field label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 6px; }
  .field .req { color: #b42318; font-size: 12px; margin-left: 6px; }
  .field input, .field select, .field textarea {
    width: 100%; font: inherit; color: var(--ink); background: var(--bg);
    border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  }
  .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
  .field textarea { min-height: 140px; resize: vertical; }
  .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
  .agree { font-size: 14px; color: var(--muted); }
  .agree a { color: var(--accent); }
  .form button { border: 0; cursor: pointer; font: inherit; }
  .form button[disabled] { opacity: .6; cursor: default; }
  .form-msg { font-size: 15px; padding: 14px 16px; border-radius: 10px; display: none; }
  .form-msg.ok { display: block; background: var(--accent-soft); color: var(--accent); }
  .form-msg.ng { display: block; background: #fdecea; color: #b42318; }
  footer a { color: var(--muted); }
  .doc { max-width: 760px; padding-top: 48px; padding-bottom: 64px; }
  .doc h1 { font-size: clamp(24px, 4vw, 32px); }
  .doc h2 { font-size: 18px; margin: 32px 0 8px; }
  .doc p, .doc li { color: var(--ink); }
  table.info { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
  table.info th, table.info td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 15px; }
  table.info th { width: 32%; color: var(--muted); font-weight: 500; background: var(--bg); }
  table.info tr:last-child th, table.info tr:last-child td { border-bottom: 0; }
  @media (max-width: 520px) { table.info th, table.info td { display: block; width: 100%; } table.info th { border-bottom: 0; padding-bottom: 4px; } }
  .field input[type=radio], .field input[type=checkbox] { width: auto; padding: 0; margin: 0 8px 0 0; vertical-align: middle; accent-color: var(--accent); }
  .field label:has(input[type=radio]) { display: flex !important; align-items: center; padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); cursor: pointer; }
  .field label:has(input[type=radio]:checked) { border-color: var(--accent); background: var(--accent-soft); }
  .doc .form h2 { margin-top: 16px; }