body {
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #0c0a09; /* 更深的背景色 */
  color: #a8a29e; /* 石板灰文字 */
}
.gradient-text {
  background: linear-gradient(90deg, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
/* 自定义滑块样式 */
input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px;
  background: #44403c; border-radius: 5px; outline: none; opacity: 0.7; transition: opacity .2s;
}
input[type="range"]:hover { opacity: 1; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 18px; height: 18px;
  background: #d6d3d1; cursor: pointer; border-radius: 50%; border: 2px solid #1c1917;
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; background: #d6d3d1; cursor: pointer;
  border-radius: 50%; border: 2px solid #1c1917;
}
/* 自定义颜色选择器 */
input[type="color"] {
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  width: 40px; height: 40px; background-color: transparent; border: none; cursor: pointer;
}
input[type="color"]::-webkit-color-swatch { border-radius: 50%; border: 2px solid #57534e; }
input[type="color"]::-moz-color-swatch { border-radius: 50%; border: 2px solid #57534e; }
/* 标签页样式 */
.tab-button.active { background-color: #a78bfa; color: #1c1917; }
/* 隐藏原始文件输入 */
#imageInput { display: none; }
/* FAQ Accordion */
.faq-item summary { cursor: pointer; }
.faq-item[open] summary i { transform: rotate(180deg); } /* Changed from svg to i */
/* 动画 */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Preset Button Style */
.preset-btn {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.preset-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(167, 139, 250, 0.2);
}
.svg-preset-btn.active {
  box-shadow: 0 0 0 2px #a78bfa;
}