body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", sans-serif;
  margin: 0;
  padding: 0;
  background: #f6f7fb;
  color: #222;
}

.container {
  max-width: 720px;
  margin: 40px auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  padding: 24px 28px;
}

h1 {
  margin: 0 0 12px 0;
  font-size: 24px;
}

section {
  margin-top: 20px;
}

button {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid #d0d7de;
  background: #fff;
  cursor: pointer;
}

button:hover {
  background: #f3f4f6;
}

#todoForm {
  display: flex;
  gap: 8px;
}

#todoForm input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
}

#todoList {
  list-style: none;
  padding-left: 0;
}

#todoList li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px dashed #eee;
  padding: 8px 0;
}

#todoList li.done {
  color: #888;
  text-decoration: line-through;
}

.feature-links {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.feature-link {
  display: inline-block;
  padding: 12px 20px;
  background: #007bff;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.feature-link:hover {
  background: #0056b3;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

/* 通义千问视频生成页面样式 */
.video-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
  background: #f9f9f9;
}

.video-title {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 8px;
}

.video-description {
  color: #666;
  margin-bottom: 10px;
  line-height: 1.4;
}

.video-meta {
  display: flex;
  gap: 15px;
  font-size: 14px;
  color: #888;
}

.video-meta span {
  background: #e9ecef;
  padding: 2px 8px;
  border-radius: 4px;
}

.strategy-section {
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  padding: 15px;
  margin: 20px 0;
}

.strategy-title {
  font-size: 16px;
  font-weight: bold;
  color: #495057;
  margin-bottom: 10px;
}

.strategy-item {
  margin: 10px 0;
  padding: 10px;
  background: white;
  border-radius: 4px;
  border-left: 4px solid #007bff;
}

.analysis-section {
  background: #fff3cd;
  border: 1px solid #ffeaa7;
  border-radius: 8px;
  padding: 15px;
  margin: 20px 0;
}

.relevance-score {
  font-size: 24px;
  font-weight: bold;
  color: #28a745;
}

.loading {
  text-align: center;
  padding: 20px;
  color: #666;
}

.error {
  background: #f8d7da;
  color: #721c24;
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
}

.success {
  background: #d4edda;
  color: #155724;
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
}

.form-group {
  margin: 15px 0;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.form-row {
  display: flex;
  gap: 15px;
  align-items: end;
}

.form-row .form-group {
  flex: 1;
}

.btn-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-primary {
  background: #007bff;
  color: white;
}

.btn-primary:hover {
  background: #0056b3;
}

.btn-secondary {
  background: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background: #545b62;
}

.btn-success {
  background: #28a745;
  color: white;
}

.btn-success:hover {
  background: #1e7e34;
}

.nav-links {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
}

.nav-link {
  color: #666;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  background: #f8f9fa;
  color: #007bff;
}