:root{
  --primary: #7D6BEF;
  --header-height: 58px;
  --max-width: 1440px;
}
body,html{padding: 0;margin: 0;}
body{background: #f4f6f8;}
*{box-sizing: border-box}
ul,li{list-style: none;margin:0;padding:0}
header{
  position: fixed;
  left: 0;right: 0;top: 0;
  height: var(--header-height);
  display: flex;align-items: center;z-index: 9999;
  padding: 0 20px;transition: background .25s,box-shadow .25s,transform .25s;
  background: transparent;
}
/* center container */
.cont{
  max-width: var(--max-width);width:100%;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 20px;gap:16px;z-index:1;
}
.logo{display:block;height:var(--header-height)}
.logo img,.logo-white img{max-height:100%}
.logo-white{display:none;height:var(--header-height)}

/* when header becomes scoped/scrolled (keeps compatibility with existing .fixed JS) */
header.fixed, header.scrolled{
  background: #fff;box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
header.fixed .logo{display:none}
header.fixed .logo-white{display:block;padding:3px 0}

.pull-right{display:flex;align-items:center;gap:32px;transition: all 200ms}
.pull-right li{list-style:none}
.pull-right li a, .pull-right li span{
  color:#fff;font-size:16px;font-weight:500;text-decoration:none;cursor:pointer;position:relative;display:inline-block;padding:6px 2px
}

.pull-right li:hover a::after, .pull-right li.active a::after{
  content: '';
  position: absolute;left:10%;right:10%;bottom:-8px;height:2px;background:var(--primary);
}

#applybtn span{color:var(--primary);font-weight:700}
header.fixed #applybtn span, header.scrolled #applybtn span{color:#fff}

/* make scrolled/fixed links use primary color */
header.fixed .pull-right li a, header.scrolled .pull-right li a,
header.fixed .pull-right li span, header.scrolled .pull-right li span{
  color: var(--primary);
}

/* responsive tweaks */
@media (max-width: 900px){
  header{padding:0 12px}
  .cont{padding:0 8px}
  .pull-right{gap:16px}
}

@media (max-width:520px){
  .pull-right{gap:10px}
  .pull-right li a, .pull-right li span{font-size:15px}
}


.article-container {
  max-width: 960px;
  margin: 40px auto;
  padding: 24px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  padding-bottom: 50px;
}

.article-container h1 {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.4;
}

.article-meta {
  font-size: 14px;
  color: #999;
  margin-bottom: 24px;
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
}

.article-content p {
  margin: 0 0 16px;
}