.bis-sidebar{
--bg:#0b1220;
--header-bg:#03203f; --accent:#2ea6ff;
--text:#ffffff;
--muted:#9fb3c9;  width:340px;
border-top-right-radius:12px;
border-bottom-right-radius:12px;
background:linear-gradient(180deg,rgba(7,18,38,0.98),rgba(6,12,22,0.98));
box-shadow:2px 6px 20px rgba(2,10,20,0.45);
color:var(--text);
overflow:hidden; z-index:99999;
display:flex;
flex-direction:column;
align-items:center;
backdrop-filter: blur(6px);
}
.bis-sidebar.open{
width:320px;
align-items:flex-start;
margin-right:50px;
padding-left:0;
padding-right:0;
}
@media (min-width:1300px){
.bis-sidebar.open{
width:340px;
}
}
@media (min-width:1400px){
.bis-sidebar.open{
width:360px;
}
} .bis-toggle-sticky{
margin:0;
background:rgb(0, 23, 51,.9);
border:none;
color:#fff;
height:auto;
width:150px; cursor:pointer;display:inline-grid;place-items:center; display:block;
border-bottom-right-radius: 10px;
border-bottom-left-radius: 10px;
}
.bis-toggle-sticky svg{
transform:rotate(-90deg);
position:absolute;
}
.bis-sidebar .bis-toggle {
margin:5px;
background:#001733;
border:none;
color:#fff;
height:40px;
border-radius:10px; cursor:pointer;display:inline-grid;place-items:center;
}
.bis-toggle:hover{
background-color:#000B1A;
}
.bis-toggle:focus{outline:3px solid rgba(46,166,255,0.18);} .bis-sidebar .bis-toggle{
position: absolute;
right: 0;
top: 0;
} .bis-brand{
width:100%;
box-sizing:border-box;
padding:18px 9px;
background:linear-gradient(180deg,var(--header-bg),#05172c);
display:flex;
gap:12px;
align-items:center;
color:var(--text);
}
.bis-term-media img, .bis-term-media .bis-term-badge{
width:56px;height:56px;border-radius:8px;flex:0 0 56px;object-fit:cover;
display:block;
}
.bis-term-badge{
display:inline-grid;place-items:center;background:#0f2740;color:#fff;font-weight:700;
font-size:18px;border-radius:8px;
width:56px;height:56px;
}
.bis-term-meta{
display:flex;
flex-direction:column;
gap:4px;
min-width:0;
}
.bis-term-name{
font-weight:700;
line-height:1.3;
color: #ffffff;
white-space:nowrap;
overflow:hidden;
text-overflow:ellipsis;
}
.bis-term-desc{
font-size:13px;
color: rgba(230,238,248,0.85);
opacity:0.9;
} .bis-brand-right{
margin-left:auto;
display:flex;
gap:8px;
align-items:center;
}
.bis-current-reading{
background: rgba(255,255,255,0.95);
color:#031125;
font-weight:600;
padding:6px 10px;
border-radius:18px;
box-shadow: 0 2px 6px rgba(3,17,37,0.15);
font-size:13px;
} .bis-nav{
width:100%;
overflow:auto;
-webkit-overflow-scrolling:touch;
background:linear-gradient(180deg,transparent,rgba(0,0,0,0.03));
}
.bis-nav ul{list-style:none;padding:8px 12px 20px 12px;margin:0;width:100%;display:flex;flex-direction:column;gap:6px;}
.bis-nav .bis-item{
display:flex;
gap:6px;
align-items:center;
text-decoration:none;
color:var(--text);
padding:5px 0px 5px 5px ;
border-radius:10px;
margin:4px 0;
transition:background 160ms,transform 120ms;
justify-content:space-between;
}
.bis-nav .bis-item .bis-item-inner ,
.bis-academy-prev-next .bis-item .bis-item-inner {
display:flex;gap:0px;align-items:center;min-width:0;
}
.bis-nav .bis-item .bis-item-inner .bis-icon-inner ,
.bis-academy-prev-next .bis-icon-inner{
width:12px;height:12px;border-radius:50%;display:inline-block;
background:rgba(255,255,255,0.1);
border:2px solid rgba(255,255,255,0.1);
}
.bis-academy-prev-next .bis-icon-inner{
background:#333333;
border:2px solid #e6e9ef;
}
.bis-nav .bis-item.is-read .bis-icon-inner{
background:#31B7CD;
border:2px solid #31B7CD;
}
.bis-nav .bis-item.active .bis-icon-inner{
background:rgba(255,255,255,0.1);
border:2px solid #31B7CD;
}
.bis-nav .bis-item.active.is-read .bis-icon-inner,
.bis-academy-prev-next .is-read .bis-icon-inner{
background:#31B7CD;
border:2px solid #31B7CD;
}
.bis-nav .bis-item:hover,.bis-nav .bis-item:focus{
background:rgba(255,255,255,0.03);
transform:translateY(-1px);
outline:none;
}
.bis-icon{width:36px;height:36px;display:inline-grid;place-items:center;color:var(--muted);flex:0 0 36px;}
.bis-sidebar:not(.open) .bis-icon{display:none;}
.bis-label{white-space:nowrap;font-size:15px;color:var(--text);opacity:0;transform:translateX(-6px);transition:opacity 220ms,transform 220ms;flex:1;overflow:hidden;text-overflow:ellipsis;}
.bis-sidebar.open .bis-label{opacity:1;transform:translateX(0);}  .bis-reading-time{
background:#f4f7f8;
color:#0b1b2a;
font-weight:600;
padding:3px 5px;
border-radius:16px;
box-shadow:0 1px 4px rgba(2,10,20,0.06);
font-size:12px;
margin-left:10px;
flex:0 0 auto;
}
.bis-sidebar .bis-reading-time{
display:none;
}
.bis-sidebar.open .bis-reading-time{
display:block;
} .bis-nav .bis-item.active{background:rgba(46,166,255,0.10);color:var(--accent);} .bis-sep{flex:1 1 auto;}
.bis-bottom{width:100%;padding:8px;box-sizing:border-box;}
.bis-tags{
}
.bis-tags a,
.bis-tags li a{
background: #f9f9f9;
border:1px solid #ccc;
font-size: 12px;
padding:0 4px;
display: inline-block;
border-radius: 4px;
}
.bis-tags ul li{
display:inline-block;
margin-right:3px;
} @media (max-width:1024px){
.bis-sidebar{left:0;top:60px;bottom:0;width:0px;border-radius:0 12px 12px 0; }
.bis-sidebar.open{position:fixed;left:0;top:60px;bottom:0;width:calc(100% - 0px);max-width:420px;border-radius:0 12px 12px 0}
.bis-term-meta{min-width:0}
}
@media (min-width:768px){
.bis-sidebar.open{ max-width:460px; }
} .bis-academy-prev-next{
display: flex;
gap: 24px;
margin-top: 40px;
padding-top: 24px;
border-top: 1px solid #e6e9ef;
}
.bis-academy-prev-next a{
position: relative;
flex: 1 1 0;
display: block;
padding: 18px 20px;
border: 1px solid #e6e9ef;
border-radius: 8px;
background: #ffffff;
color: #6b7280; text-decoration: none;
font-size: 13px;
transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease;
}
.bis-academy-prev-next .bis-prev-next-title{
display: block;
margin-top: 6px;
font-weight: 600;
line-height: 1.3;
color: #111827;
font-size: 16px;
} .bis-academy-prev-next a[rel="prev"]{
text-align: left;
padding-left: 46px;
}
.bis-academy-prev-next a[rel="next"]{
text-align: right;
padding-right: 46px;
} .bis-academy-prev-next a[rel="prev"]::before,
.bis-academy-prev-next a[rel="next"]::after{
position: absolute;
top: 27px;
font-size: 18px;
line-height: 1;
color: #6b7280;
}
.bis-academy-prev-next a[rel="prev"]::before{
content: "←";
left: 18px;
}
.bis-academy-prev-next a[rel="next"]::after{
content: "→";
right: 18px;
} .bis-academy-prev-next a:hover,
.bis-academy-prev-next a:focus-visible{
transform: translateY(-2px);
box-shadow: 0 10px 25px rgba(0,0,0,.08);
border-color: #d6dbe6;
}
.bis-academy-prev-next a:hover .bis-prev-next-title,
.bis-academy-prev-next a:focus-visible .bis-prev-next-title{
text-decoration: underline;
text-underline-offset: 3px;
} @media (max-width: 767px){
.bis-academy-prev-next{
flex-direction: column;
gap: 14px;
}
.bis-academy-prev-next a[rel="prev"],
.bis-academy-prev-next a[rel="next"]{
text-align: left;
padding-left: 46px;
padding-right: 20px;
} .bis-academy-prev-next a[rel="next"]::after{
}
}