body{
    background: var(--color-bg);
    background-image:
      radial-gradient(circle at 10% 8%, rgba(58,16,120,0.05), transparent 40%),
      radial-gradient(circle at 90% 85%, rgba(255,107,53,0.06), transparent 40%);
    color: var(--color-ink);
    font-family: var(--font-body);
    line-height: 1.75;
    min-height: 100vh;
  }
  .contact-page{
    display:flex;
    justify-content:center;
    padding: 40px 16px 80px;
  }

  .contact{
    width: 100%;
    max-width: 640px;
  }

  .contact__eyebrow{
    display:flex;
    align-items:center;
    gap:8px;
    font-size: 13px;
    color: var(--color-purple-soft);
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
  }
  .contact__title{
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(24px, 5vw, 32px);
    color: var(--color-purple);
    margin: 0 0 10px;
  }
  .contact__lead{
    font-size: 14.5px;
    color: var(--color-ink-soft);
    margin: 0 0 28px;
  }

  .contact__card{
    background: var(--color-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 32px 28px;
    border: 1px solid var(--color-line);
  }

  .contact__group{
    margin-bottom: 22px;
  }
  .contact__label{
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 8px;
  }
  .contact__required{
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: var(--color-orange);
    padding: 2px 8px;
    border-radius: 999px;
  }
  .contact__optional{
    font-size: 11px;
    font-weight: 500;
    color: var(--color-ink-soft);
    background: var(--color-purple-tint);
    padding: 2px 8px;
    border-radius: 999px;
  }

  .contact__input,
  .contact__select,
  .contact__textarea{
    width: 100%;
    font-family: var(--font-body);
    font-size: 14.5px;
    color: var(--color-ink);
    padding: 13px 14px;
    border: 1.5px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    transition: border-color 0.2s ease;
  }
  .contact__input:focus,
  .contact__select:focus,
  .contact__textarea:focus{
    outline: none;
    border-color: var(--color-purple);
  }
  .contact__textarea{
    resize: vertical;
    min-height: 140px;
  }
  .contact__select{
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'><path d='M1 1l6 6 6-6' stroke='%236E6480' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/></svg>");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
  }

  .contact__hint{
    font-size: 12px;
    color: var(--color-ink-soft);
    margin-top: 6px;
  }
  .contact__error{
    font-size: 12px;
    color: var(--color-error);
    margin-top: 6px;
    display: none;
  }
  .contact__group--invalid .contact__input,
  .contact__group--invalid .contact__select,
  .contact__group--invalid .contact__textarea{
    border-color: var(--color-error);
    background: var(--color-error-tint);
  }
  .contact__group--invalid .contact__error{
    display: block;
  }

  .contact__source{
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    color: var(--color-ink-soft);
    background: var(--color-purple-tint);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
  }
  .contact__source-dot{
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--color-purple-soft);
    flex-shrink: 0;
  }

  .contact__submit{
    width: 100%;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: var(--color-orange);
    border: none;
    border-radius: 999px;
    padding: 15px 20px;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease;
  }
  .contact__submit:hover:not(:disabled){
    transform: translateY(-1px);
  }
  .contact__submit:disabled{
    opacity: 0.5;
    cursor: not-allowed;
  }

  .contact__privacy{
    font-size: 11.5px;
    color: var(--color-ink-soft);
    text-align: center;
    margin-top: 14px;
  }

  /* States */
  .contact__form{ display: block; }
  .contact__state{
    display: none;
    text-align: center;
    padding: 20px 0;
  }
  .contact__state--active{ display: block; }
  .contact__state-icon{
    width: 52px; height: 52px;
    margin: 0 auto 18px;
  }
  .contact__state-title{
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 800;
    color: var(--color-purple);
    margin: 0 0 10px;
  }
  .contact__state-desc{
    font-size: 14px;
    color: var(--color-ink-soft);
    margin: 0 0 20px;
  }
  .contact__state-btn{
    display: inline-block;
    background: transparent;
    border: 1.5px solid var(--color-purple);
    color: var(--color-purple);
    font-weight: 700;
    font-size: 13.5px;
    padding: 10px 20px;
    border-radius: 999px;
    cursor: pointer;
  }

  @media (max-width: 480px){
    .contact__card{ padding: 24px 18px; }
  }

  /* ---------- Honeypot（人間には見せない） ---------- */
  .contact__honeypot{
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
  }