:root {
  --green-deep: #2d5a3d;
  --green-mid: #3a7a52;
  --green-light: #e8f5ec;
  --green-pale: #f4faf6;
  --accent: #c8a45c;
  --text: #2c2c2c;
  --text-sub: #6b7b6f;
  --white: #ffffff;
  --error: #d44;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(45, 90, 61, 0.10);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background: var(--green-pale);
  min-height: 100dvh;
  line-height: 1.7;
}
.page-bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(58,122,82,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(200,164,92,0.06) 0%, transparent 50%),
    var(--green-pale);
}
.container { max-width: 520px; margin: 0 auto; padding: 32px 20px 48px; }
.header { text-align: center; margin-bottom: 24px; }
.header-icon { font-size: 40px; margin-bottom: 8px; }
.header h1 {
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-size: 1.25rem; font-weight: 700;
  color: var(--green-deep); letter-spacing: 0.04em;
}
.subtitle { font-size: 0.95rem; color: var(--text-sub); margin-top: 4px; }
.notice {
  background: var(--white); border-left: 4px solid var(--green-mid);
  border-radius: 8px; padding: 14px 18px; margin-bottom: 28px;
  font-size: 0.88rem; color: var(--text-sub); box-shadow: var(--shadow);
}
.form-card {
  background: var(--white); border-radius: var(--radius);
  padding: 28px 24px 32px; box-shadow: var(--shadow);
}
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 0.88rem; font-weight: 500; margin-bottom: 6px; color: var(--green-deep); }
.req { font-size: 0.7rem; background: var(--error); color: #fff; padding: 1px 6px; border-radius: 4px; margin-left: 4px; }
.field input {
  width: 100%; padding: 12px 14px; border: 1.5px solid #d0ddd4;
  border-radius: 8px; font-size: 1rem; font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s; background: var(--green-pale);
}
.field input:focus { outline: none; border-color: var(--green-mid); box-shadow: 0 0 0 3px rgba(58,122,82,0.12); }
.field input.invalid { border-color: var(--error); }
.error { display: block; font-size: 0.78rem; color: var(--error); min-height: 1.2em; margin-top: 4px; }
#submit-btn {
  display: block; width: 100%; padding: 14px; margin-top: 8px;
  background: linear-gradient(135deg, var(--green-mid), var(--green-deep));
  color: var(--white); font-family: inherit; font-size: 1.05rem; font-weight: 700;
  border: none; border-radius: 8px; cursor: pointer; letter-spacing: 0.06em;
  transition: opacity 0.2s, transform 0.1s;
}
#submit-btn:hover { opacity: 0.9; }
#submit-btn:active { transform: scale(0.98); }
#submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.success-section { animation: fadeIn 0.4s ease; }
.success-card {
  background: var(--white); border-radius: var(--radius);
  padding: 40px 24px; text-align: center; box-shadow: var(--shadow);
}
.success-icon { font-size: 48px; margin-bottom: 12px; }
.success-card h2 { color: var(--green-deep); font-size: 1.2rem; margin-bottom: 12px; }
.success-card p { font-size: 0.9rem; color: var(--text-sub); margin-bottom: 24px; }
.btn-another {
  padding: 10px 28px; background: transparent; border: 1.5px solid var(--green-mid);
  color: var(--green-mid); border-radius: 8px; font-family: inherit; font-size: 0.9rem;
  font-weight: 500; cursor: pointer; transition: background 0.2s;
}
.btn-another:hover { background: var(--green-light); }
.footer { text-align: center; margin-top: 40px; font-size: 0.78rem; color: var(--text-sub); }
@keyframes fadeIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }
.sp-only { display: none; }
@media (max-width: 600px) {
  .container { padding: 24px 16px 40px; }
  .form-card { padding: 24px 18px 28px; }
  .sp-only { display: inline; }
}