@charset "UTF-8";
    :root {
      --bg: #0b1220;        /* 背景(濃紺) */
      --card: #121a2b;      /* カード */
      --line: #223053;      /* 線 */
      --text: #e9eefc;      /* 文字 */
      --muted: #a9b7d7;     /* 補助文字 */
      --accent: #7cc34b;    /* アクセント(UTグリーン系) */
      --accent-2: #08a04b;  /* アクセント濃 */
      --warn: #ff5c5c;
      --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
      --radius: 16px;
    }

    html, body { height: 100%; }
    body {
      margin: 0; background: radial-gradient(1200px 600px at 20% -10%, #18243f 0%, var(--bg) 60%), var(--bg);
      color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, Noto Sans JP, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
      -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    }

    .container { max-width: 960px; margin: 0 auto; padding: 24px 16px 120px; }

    header.hero { display: grid; gap: 12px; align-items: center; justify-items: start; margin: 12px 0 20px; }
    .brand { display:flex; align-items:center; gap:10px; }
    .brand img { height: 28px; width: auto; }
    .hero h1 { font-size: clamp(20px, 2.8vw + 12px, 32px); margin: 0; letter-spacing: .02em; }
    .hero p { margin: 0; color: var(--muted); }

    .stats { display:flex; gap: 12px; flex-wrap: wrap; margin: 8px 0 20px; }
    .stat { background: linear-gradient(180deg, #15213a, #0f1424); border:1px solid var(--line); border-radius: 12px; padding: 10px 12px; box-shadow: var(--shadow); font-size: 14px; color: var(--muted); }
    .stat b { color: var(--text); font-size: 16px; }

    .form-wrap { background: linear-gradient(180deg, #0f1627, #0b1220); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }

    .progress { position: sticky; top: 0; z-index: 10; background: rgba(17, 25, 43, .7); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); padding: 10px 14px; display:flex; align-items:center; gap: 12px; }
    .progressbar { flex:1; height:10px; background:#0d1530; border-radius: 999px; overflow: hidden; border:1px solid var(--line); }
    .progressbar > i { display:block; height:100%; width:0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .35s ease; }
    .progress__text { font-size: 12px; color: var(--muted); white-space: nowrap; }

    .step { display:none; padding: 20px clamp(16px, 3vw, 32px); }
    .step.active { display:block; animation: fade .24s ease; }
    @keyframes fade { from { opacity:0; transform: translateY(4px);} to { opacity:1; transform: none;} }

    .question h2 { font-size: clamp(18px, 2.2vw + 10px, 26px); margin: 0 0 8px; }
    .question small { color: var(--muted); }

    .grid { display:grid; gap: 10px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    @media (max-width: 560px){ .grid { grid-template-columns: 1fr; } }

    .card-option { position: relative; border:1px solid var(--line); background: #0c1323; border-radius: 12px; padding: 12px; cursor: pointer; transition: transform .08s ease, border-color .2s ease, background .2s ease; }
    .card-option:hover { transform: translateY(-1px); }
    .card-option input { position: absolute; inset: 0; opacity: 0; }
    .card-option .title { font-weight: 600; }
    .card-option[aria-checked="true"], .card-option input:checked + .title { border-color: var(--accent); }

    /* === 選択済みの視覚強調（戻った時に一目で分かる） === */
    .card-option.is-selected {
      border-color: var(--accent);
      background: radial-gradient(320px 160px at 10% 10%, rgba(124,195,75,.18), transparent 60%), #0c1323;
      box-shadow: 0 0 0 1px rgba(124,195,75,.25) inset, var(--shadow);
    }
    .card-option input:focus-visible ~ .title { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }

    .pill { display:inline-flex; align-items:center; gap:8px; padding: 10px 12px; border-radius: 999px; background: #0e1630; border:1px solid var(--line); }

    .field { display:grid; gap:6px; margin-top: 12px; }
    .field label { font-size: 14px; color: var(--muted); }
    .field input, .field select { width: 100%; padding: 12px 14px; border-radius: 10px; background: #0c1323; border:1px solid var(--line); color: var(--text); outline: none; }
    /* 入力/選択済みフィールド強調（セレクト/テキスト） */
    .field select.has-value, .field input.filled { border-color: var(--accent); background: #0e1a30; box-shadow: 0 0 0 1px rgba(124,195,75,.25) inset; }

    .hint { color: var(--muted); font-size: 12px; }
    .error { color: #ffd7d7; background: #3a0f14; border:1px solid #533; padding: 8px 10px; border-radius: 10px; font-size: 13px; display:none; }
    .error.show { display:block; }

    .footer-legal { color: var(--muted); font-size: 12px; margin-top: 12px; }

    .nav { position: sticky; bottom: 0; background: rgba(12, 18, 35, .85); backdrop-filter: blur(6px); border-top:1px solid var(--line); padding: 12px; display:flex; gap:10px; }
    .btn { appearance: none; border:0; border-radius: 12px; padding: 14px 16px; font-weight: 700; cursor: pointer; }
    .btn-primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #061312; }
    .btn-outline { background: transparent; border:1px solid var(--line); color: var(--text); }
    .btn[disabled] { opacity:.4; cursor:not-allowed; }

    .badge { display:inline-flex; align-items:center; gap: 8px; font-size: 12px; padding: 6px 10px; border-radius: 999px; background: #0f1730; border:1px solid var(--line); color: var(--muted); }

    .hidden { display:none !important; }
    .iframe-wrap{position:relative;width:100%;height:min(90vh,1000px);border:1px solid var(--line);background:#0c1323;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);} .iframe-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}