:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #27328a;
  --primary-dark: #1d4ed8;
  --border: #d1d5db;
  --error: #dc2626;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #eef2ff 0%, var(--bg) 45%, #f8fafc 100%);
  color: var(--text);
  line-height: 1.6;
}

.page {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 18px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  border: 1px solid rgba(209, 213, 219, 0.7);
}

.header {
  padding: 36px 32px;
  background: #1e3a8a;
  color: #ffffff;
}

.header h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
}

.subtitle {
  margin: 0;
  font-size: 18px;
  font-style: italic;
  opacity: 0.95;
}

.content {
  padding: 30px 32px 36px;
}

.notice {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-left: 5px solid var(--primary);
  padding: 18px 20px;
  border-radius: 12px;
  margin-bottom: 28px;
}

.notice p {
  margin: 0 0 10px;
}

.notice p:last-child {
  margin-bottom: 0;
}

.deadline {
  font-weight: 700;
  color: #1e40af;
}

h2 {
  margin: 0 0 18px;
  font-size: 24px;
}

form {
  display: grid;
  gap: 22px;
}

.field {
  display: grid;
  gap: 8px;
}

label,
legend {
  font-weight: 700;
  color: #111827;
}

.required {
  color: var(--error);
  margin-left: 3px;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: #ffffff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.13);
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin: 0;
}

.radio-group,
.checkbox-group {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.option {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-weight: 400;
  cursor: pointer;
}

.option input {
  margin-top: 5px;
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.hidden {
  display: none;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 6px;
}

button {
  border: none;
  border-radius: 999px;
  padding: 13px 24px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, box-shadow 0.2s;
}

button[type="submit"] {
  background: var(--primary);
  color: white;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.22);
}

button[type="submit"]:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

button[type="reset"] {
  background: #e5e7eb;
  color: #111827;
}

.form-message {
  display: none;
  padding: 14px 16px;
  border-radius: 10px;
  font-weight: 700;
}

.form-message.success {
  display: block;
  background: #dcfce7;
  color: #166534;
  border: 1px solid #86efac;
}

.small-print {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .page {
    padding: 16px;
  }

  .header,
  .content {
    padding: 24px 20px;
  }

  fieldset {
    padding: 16px 14px;
  }
}