:root {
      --bg: #f6f8fb;
      --panel: #ffffff;
      --text: #172033;
      --muted: #64748b;
      --line: #d9e2ef;
      --primary: #3b63f4;
      --primary-dark: #2848c8;
      --danger: #b91c1c;
      --ok: #047857;
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Segoe UI", sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
    }
    header {
      border-bottom: 1px solid var(--line);
      background: rgba(255,255,255,0.92);
      position: sticky;
      top: 0;
      z-index: 10;
    }
    .nav {
      max-width: 1040px;
      margin: 0 auto;
      height: 64px;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo { color: var(--text); text-decoration: none; font-size: 1.25rem; font-weight: 900; }
    .nav a:not(.logo) { color: var(--muted); text-decoration: none; font-weight: 700; font-size: 0.92rem; }
    main { max-width: 760px; margin: 0 auto; padding: 48px 20px 72px; }
    h1 { margin: 0 0 8px; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.2; }
    .lead { margin: 0 0 28px; color: var(--muted); }
    form {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 24px;
      box-shadow: 0 14px 34px rgba(15, 23, 42, 0.07);
    }
    .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { margin-bottom: 16px; }
    label { display: block; margin-bottom: 6px; font-size: 0.88rem; font-weight: 800; }
    input, select, textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 12px 13px;
      font: inherit;
      background: #fff;
      color: var(--text);
    }
    textarea { min-height: 180px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: 3px solid rgba(59, 99, 244, 0.16); border-color: var(--primary); }
    .hidden { position: absolute; left: -9999px; opacity: 0; }
    button {
      width: 100%;
      border: 0;
      border-radius: 8px;
      padding: 14px 18px;
      background: var(--primary);
      color: #fff;
      font: inherit;
      font-weight: 900;
      cursor: pointer;
    }
    button:hover { background: var(--primary-dark); }
    button:disabled { opacity: 0.6; cursor: wait; }
    .status { min-height: 28px; margin-top: 14px; font-weight: 800; }
    .status.ok { color: var(--ok); }
    .status.err { color: var(--danger); }
    @media (max-width: 680px) {
      main { padding-top: 32px; }
      form { padding: 18px; }
      .grid { grid-template-columns: 1fr; gap: 0; }
      .nav { height: 58px; }
    }

/* 任意項目であることを控えめに示す（購入前の相談者が組織IDで詰まらないように） */
.field-optional {
  margin-left: 6px;
  font-size: 0.78em;
  font-weight: 400;
  color: var(--tn-text-muted, #6b7593);
}