Template:WelcomeHeader/styles.css：修订间差异

/* ===== Banner 样式：学术与商业的融合 (智性风) ===== */
.main-banner {
  display: flex;
  align-items: center;
  gap: 32px; /* 增加间距，增加呼吸感 (学术排版特征) */
  padding: 32px 40px;
  
  /* --- 核心修改 --- */
  background: var(--color-surface-1);
  border-radius: 2px; 
  border-left: 5px solid #3e83ff; 
  border-top: 1px solid rgba(0,0,0,0.08);
  border-right: 1px solid rgba(0,0,0,0.08);
  border-bottom: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  
  overflow: hidden;
}

.banner-left img {
  max-width: 180px;
  height: auto;
  filter: grayscale(100%);
}

.banner-right {
  flex: 1;
  text-align: left; 
}

.title {
  color: #0f172a; 
  font-family: "Georgia", "Times New Roman", serif; 
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.subtitle {
  font-size: 18px;
  margin: 0.5em 0 1.5em;
  color: #475569;
  font-weight: 400;
  line-height: 1.6;
}

.divider {
  height: 1px;
  background: rgba(0,0,0,0.1);
  margin-bottom: 1.2em;
  width: 100%;
}

.count {
  font-size: 14px;
  margin: 0;
  letter-spacing: 0.1em;
  color: #64748b;
  font-weight: 600;
}

.count span {
    color: #3e83ff;
    font-family: sans-serif;
    font-weight: 700;
}

/* ≤600 px 时纵向布局 */
@media(max-width: 600px){
  .main-banner {
    flex-direction: column;
    text-align: left;
    border-left: 1px solid rgba(0,0,0,0.08);
    border-top: 4px solid #3e83ff;
  }
  .banner-right {
    text-align: left;
  }
  .divider {
    width: 100%;
    margin: 16px 0;
  }
}