:root {
    --blue: #0C4A6E;
    --blue-light: #1a6a9a;
    --black: #1A1A1A;
    --white: #FFFFFF;
    --gray: #9CA3AF;
    --gray-light: #F5F5F5;
    --gray-mid: #E5E7EB;
    --os: #0C4A6E;
    --db: #1d6a4a;
    --app: #7c3a1a;
    --multi: #4a1a6e;
    --all: #1A1A1A;
  }

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

  body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.8;
  }

  /* ── HEADER ── */
  .site-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-mid);
    padding: 20px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .logo {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--blue);
    text-transform: uppercase;
  }

  /* ── HERO ── */
  .hero {
    background: var(--blue);
    color: var(--white);
    padding: 80px 40px;
    text-align: center;
  }
  .hero-label {
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
    margin-bottom: 24px;
  }
  .hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
  }
  .hero-sub {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
    max-width: 560px;
    margin: 0 auto 16px;
    line-height: 1.9;
  }
  .hero-meta {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
  }

  /* ── MAIN CONTAINER ── */
  .container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ── SCREENS ── */
  .screen { display: none; }
  .screen.active { display: block; }

  /* ── DIAGNOSTIC SCREEN ── */
  #screen-quiz {
    padding: 60px 0 80px;
  }

  .progress-bar-wrap {
    background: var(--gray-mid);
    border-radius: 2px;
    height: 3px;
    margin-bottom: 48px;
    overflow: hidden;
  }
  .progress-bar-fill {
    height: 100%;
    background: var(--blue);
    border-radius: 2px;
    transition: width 0.4s ease;
    width: 0%;
  }

  .question-count {
    font-size: 11px;
    letter-spacing: 0.15em;
    color: var(--gray);
    text-transform: uppercase;
    margin-bottom: 16px;
  }

  .question-text {
    font-size: clamp(18px, 2.5vw, 22px);
    font-weight: 700;
    line-height: 1.6;
    color: var(--black);
    margin-bottom: 40px;
  }

  .options {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .option-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border: 1.5px solid var(--gray-mid);
    border-radius: 4px;
    background: var(--white);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
  }
  .option-btn:hover {
    border-color: var(--blue);
    background: #f0f7ff;
  }
  .option-btn.selected {
    border-color: var(--blue);
    background: #e8f2fb;
  }
  .option-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1.5px solid var(--gray-mid);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
  }
  .option-btn.selected .option-dot {
    border-color: var(--blue);
    background: var(--blue);
  }
  .option-btn.selected .option-dot::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
  }
  .option-label {
    font-size: 15px;
    font-weight: 500;
    color: var(--black);
  }

  .nav-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
  }
  .btn-back {
    font-size: 13px;
    color: var(--gray);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 0;
  }
  .btn-back:hover { color: var(--black); }
  .btn-next {
    padding: 14px 36px;
    background: var(--blue);
    color: var(--white);
    border: none;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: background 0.2s;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .btn-next:hover { background: var(--blue-light); }
  .btn-next:disabled {
    background: var(--gray-mid);
    color: var(--gray);
    cursor: not-allowed;
  }

  /* ── RESULT SCREEN ── */
  #screen-result {
    padding: 0 0 80px;
  }

  .result-hero {
    padding: 60px 40px;
    text-align: center;
    color: var(--white);
  }
  .result-hero.os    { background: var(--os); }
  .result-hero.db    { background: var(--db); }
  .result-hero.app   { background: var(--app); }
  .result-hero.os-db { background: linear-gradient(135deg, var(--os), var(--db)); }
  .result-hero.os-app { background: linear-gradient(135deg, var(--os), var(--app)); }
  .result-hero.db-app { background: linear-gradient(135deg, var(--db), var(--app)); }
  .result-hero.all   { background: var(--all); }
  .result-hero.none  { background: #2d4a2d; }

  .result-tag {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.4);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 20px;
    color: rgba(255,255,255,0.8);
  }
  .result-type {
    font-size: clamp(22px, 3.5vw, 32px);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
  }
  .result-hero-sub {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.9;
  }

  .result-body {
    padding: 48px 0;
  }

  .result-section {
    margin-bottom: 40px;
  }
  .result-section-label {
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 12px;
  }
  .result-description {
    font-size: 15px;
    line-height: 2;
    color: var(--black);
  }

  .alert-box {
    background: var(--gray-light);
    border-left: 3px solid var(--black);
    padding: 16px 20px;
    font-size: 14px;
    line-height: 1.8;
    color: #444;
    margin-top: 24px;
    border-radius: 0 3px 3px 0;
  }

  /* CTA AREA */
  .cta-area {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .cta-primary {
    display: block;
    width: 100%;
    padding: 18px;
    background: var(--blue);
    color: var(--white);
    text-align: center;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.03em;
    border-radius: 3px;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .cta-primary:hover { background: var(--blue-light); }
  .cta-secondary {
    display: block;
    width: 100%;
    padding: 18px;
    background: var(--white);
    color: var(--blue);
    text-align: center;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.03em;
    border-radius: 3px;
    border: 1.5px solid var(--blue);
    transition: all 0.2s;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .cta-secondary:hover {
    background: #f0f7ff;
  }
  .cta-micro {
    text-align: center;
    font-size: 12px;
    color: var(--gray);
    padding-top: 4px;
  }

  /* WP DOWNLOAD FORM */
  .wp-form {
    display: none;
    margin-top: 20px;
    padding: 28px;
    background: var(--gray-light);
    border-radius: 4px;
  }
  .wp-form.open { display: block; }
  .wp-form label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--black);
    margin-bottom: 8px;
  }
  .wp-form input[type="email"] {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-mid);
    border-radius: 3px;
    font-size: 14px;
    font-family: 'Noto Sans JP', sans-serif;
    margin-bottom: 12px;
    outline: none;
    transition: border-color 0.2s;
  }
  .wp-form input[type="email"]:focus {
    border-color: var(--blue);
  }
  .wp-form-note {
    font-size: 11px;
    color: var(--gray);
    margin-bottom: 16px;
    line-height: 1.6;
  }
  .wp-submit {
    width: 100%;
    padding: 14px;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    letter-spacing: 0.05em;
    transition: background 0.2s;
  }
  .wp-submit:hover { background: #333; }

  /* DIVIDER */
  .divider {
    border: none;
    border-top: 1px solid var(--gray-mid);
    margin: 40px 0;
  }

  /* RETRY */
  .retry-link {
    text-align: center;
    margin-top: 32px;
  }
  .retry-link button {
    font-size: 12px;
    color: var(--gray);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: underline;
    font-family: 'Noto Sans JP', sans-serif;
  }
  .retry-link button:hover { color: var(--black); }

  /* FOOTER */
  footer {
    border-top: 1px solid var(--gray-mid);
    padding: 32px 40px;
    text-align: center;
    font-size: 11px;
    color: var(--gray);
    letter-spacing: 0.05em;
  }

  @media (max-width: 600px) {
    .hero { padding: 60px 24px; }
    .site-header { padding: 16px 24px; }
  }