:root {
  --bg-dark: #121417;
  --card-bg: #1c2026;
  --accent: #f39c12;
  --accent-hover: #e67e22;
  --text-main: #f0f2f5;
  --text-muted: #9aa5b1;
  --border: #2d333b;
}

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

body {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  background: linear-gradient(135deg, #1a1d24 0%, #0d0f12 100%);
  border-bottom: 3px solid var(--accent);
  padding: 60px 0;
  text-align: center;
  margin-bottom: 30px;
}

.hero h1 {
  font-size: 2.5rem;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 10px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 24px;
}

.card h2 {
  font-size: 1.35rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: #ffffff;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.info-item {
  background: #14171c;
  padding: 16px;
  border-radius: 6px;
  border-left: 3px solid var(--accent);
}

.info-item strong {
  display: block;
  color: var(--accent);
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.req-list {
  list-style: none;
}

.req-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}

.req-list li:last-child {
  border-bottom: none;
}

.form-note {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
  font-size: 0.95rem;
}

.req {
  color: #e74c3c;
}

input[type="text"],
select,
textarea {
  width: 100%;
  padding: 12px;
  background-color: #121417;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 1rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background-color: var(--accent);
  color: #121417;
  font-size: 1.05rem;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-submit:hover {
  background-color: var(--accent-hover);
}

.btn-submit:disabled {
  background-color: #555;
  color: #999;
  cursor: not-allowed;
}

footer {
  text-align: center;
  padding: 30px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}