* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: #0b1a33;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  line-height: 1.6;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

.title {
  font-size: 32px;
  font-weight: 700;
  color: white;
  margin: 0;
  text-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.content {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.image-section {
  text-align: center;
  margin-bottom: 40px;
}

.main-image {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
  margin-bottom: 20px;
}

.steps {
  display: grid;
  gap: 25px;
  margin-bottom: 40px;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 25px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  border: 1px solid rgba(255,255,255,0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}

.step-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 6px 15px rgba(238,90,36,0.4);
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f2937;
  margin: 0 0 15px 0;
  line-height: 1.4;
}

.step-image {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.image-placeholder {
  font-size: 40px;
}

.action-section {
  text-align: center;
  margin-bottom: 30px;
}

.action-btn {
  display: inline-block;
  background: linear-gradient(135deg, #ff9500, #ff6b00);
  color: white;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 25px;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(255,149,0,0.3);
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,149,0,0.4);
}

.footer {
  text-align: center;
  margin-top: auto;
  padding-top: 30px;
}

.back-btn {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  color: white;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
}

.back-btn:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .page {
    padding: 15px;
  }
  
  .title {
    font-size: 28px;
  }
  
  .step {
    flex-direction: column;
    text-align: center;
    gap: 15px;
    padding: 20px;
  }
  
  .step-number {
    order: -1;
  }
  
  .step-title {
    font-size: 16px;
  }
  
  .action-btn {
    padding: 14px 28px;
    font-size: 16px;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.step {
  animation: fadeInUp 0.6s ease forwards;
}

.step:nth-child(1) { animation-delay: 0.1s; }
.step:nth-child(2) { animation-delay: 0.2s; }
.step:nth-child(3) { animation-delay: 0.3s; }
.step:nth-child(4) { animation-delay: 0.4s; }
.step:nth-child(5) { animation-delay: 0.5s; }