code/frontend/minicpm4-survey/src/App.css

:root {
  --neon-blue: #00f3ff;
  --neon-purple: #ffffff;
  --dark-panel: rgba(10, 10, 30, 0.95);
  --glass-color: rgba(255, 255, 255, 0.05);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Orbitron', monospace;
}

body {
  overflow: hidden;
}

.cyber-container {
  position: relative;
  display: flex;
  min-height: 100vh;
  background: radial-gradient(circle at center, #0a0a1f 0%, #000000 100%);
  padding: 2rem;
  gap: 2rem;
  overflow: hidden;
}

/* 全息背景 */
.hologram-bg {
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 5px,
    rgba(0, 255, 255, 0.05) 5px,
    rgba(0, 255, 255, 0.05) 10px
  );
  animation: scan 20s linear infinite;
  z-index: 0;
}

@keyframes scan {
  0% { transform: translateY(-50%) rotate(0deg); }
  100% { transform: translateY(50%) rotate(360deg); }
}

/* 面板样式 */
.tech-panel {
  position: relative;
  width: 220px;
  padding: 1.5rem;
  background: var(--glass-color);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  z-index: 1;
}

.tech-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple), var(--neon-blue));
  animation: pulse 3s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* 输入框 */
.input-wrapper {
  position: relative;
  margin-bottom: 1.2rem;
}

.neon-input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(0, 255, 255, 0.3);
  border-radius: 6px;
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: all 0.3s ease;
}

.neon-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.neon-input:focus {
  border-color: var(--neon-blue);
  box-shadow: 0 0 10px var(--neon-blue);
}

.input-glow {
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-purple), transparent);
  animation: glowPulse 2s infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* 核心区域 */
.core-module {
  position: relative;
  flex: 1;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.quantum-textarea {
  flex: 1;
  padding: 2rem;
  font-size: 1.2rem;
  background: rgba(0, 0, 20, 0.7);
  border: 2px solid var(--neon-blue);
  border-radius: 12px;
  color: #fff;
  outline: none;
  resize: both;
  min-height: 300px;
  backdrop-filter: blur(5px);
  font-family: 'Orbitron', monospace;
  transition: all 0.3s ease;
}

.quantum-textarea::placeholder {
  color: rgba(255, 255, 255, 0.2);
}

.quantum-textarea:focus {
  border-color: var(--neon-purple);
  box-shadow: 0 0 20px var(--neon-purple);
}

.core-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300%;
  height: 300%;
  background: radial-gradient(circle, var(--neon-blue) 0%, transparent 70%);
  opacity: 0.1;
  transform: translate(-50%, -50%);
  z-index: 0;
  pointer-events: none;
  animation: pulseGlow 5s infinite alternate;
}

@keyframes pulseGlow {
  0% { transform: translate(-50%, -50%) scale(1); }
  100% { transform: translate(-50%, -50%) scale(1.2); }
}

/* 数据流动画 */
.data-stream {
  position: absolute;
  bottom: 1rem;
  right: 2rem;
  display: flex;
  gap: 0.5rem;
  z-index: 2;
}

.stream-pulse {
  width: 6px;
  height: 6px;
  background: var(--neon-blue);
  border-radius: 50%;
  animation: pulseDot 1.5s infinite;
}

.delay-1 {
  animation-delay: 0.3s;
}

.delay-2 {
  animation-delay: 0.6s;
}

@keyframes pulseDot {
  0% { transform: scale(1); opacity: 1; }
  70% { transform: scale(1.5); opacity: 0.3; }
  100% { transform: scale(1); opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .cyber-container {
    flex-direction: column;
    padding: 1rem;
  }
  
  .tech-panel {
    width: 100%;
    margin-bottom: 1.5rem;
  }
  
  .core-module {
    min-height: 400px;
  }
}
.markdown-editor {
  display: flex;
  gap: 20px;
  height: 100%;
  z-index: 1;
}

.markdown-input,
.markdown-preview {
  flex: 1;
  padding: 15px;
  font-size: 16px;
  border: 2px solid var(--neon-blue);
  border-radius: 8px;
  background: rgba(0, 0, 20, 0.7);
  color: #fff;
  font-family: 'Orbitron', monospace;
  resize: both;
}

.markdown-input {
  min-height: 300px;
  outline: none;
}

.markdown-input:focus {
  box-shadow: 0 0 10px var(--neon-blue);
}

.markdown-preview {
  max-height: 800px; /* 设置最大高度，超出后滚动 */
  width: 100%;
  overflow-y: auto;  /* 垂直方向溢出时显示滚动条 */
  padding: 10px;
  border: 1px solid #333;
  background-color: #111;
  color: #eee;
  font-family: monospace;
}

/* Markdown 内容增强样式 */
.markdown-preview h1, h2, h3 {
  color: var(--neon-purple);
}

.markdown-preview pre {
  background: #111;
  padding: 10px;
  border-radius: 6px;
  color: #00ffcc;
  overflow-x: auto;
}

.markdown-preview code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 4px;
  border-radius: 4px;
  color: var(--neon-blue);
}

.core-module {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem;
}

.markdown-toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.neon-button {
  background-color: #000;
  color: #0f0;
  border: 2px solid #0f0;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.neon-button:hover {
  background-color: #0f0;
  color: #000;
}

.markdown-editor {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 1rem;
}