/* ============ 学习库 · 极光玻璃风 ============ */
/* 依赖 aurora.css 的 CSS 变量与 .glass/.btn/.reveal 基础类 */

.lib-page{padding:110px 0 40px}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-dim);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--accent2);text-decoration:none}
.crumb a:hover{text-decoration:underline}
.crumb span{opacity:.45}
.crumb b{color:var(--text);font-weight:600}

/* ---------- 总览 Hero ---------- */
.lib-hero{margin-bottom:30px}
.lh-badge{display:inline-block;font-size:11px;letter-spacing:2.5px;color:var(--accent);border:1px solid rgba(179,136,255,.35);padding:4px 12px;border-radius:20px;margin-bottom:16px}
.lib-hero h1{font-size:clamp(30px,5vw,46px);font-weight:800;letter-spacing:-1.5px;line-height:1.15;margin-bottom:14px;
  background:linear-gradient(135deg,#fff 25%,#b388ff 65%,#5cf2e6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lh-lead{font-size:16px;color:var(--text-dim);line-height:1.75;max-width:660px}
.lh-stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.lh-stat{padding:14px 22px;border-radius:16px;background:var(--glass);backdrop-filter:blur(14px);border:1px solid var(--border);min-width:96px}
.lh-stat .n{font-size:26px;font-weight:800;line-height:1;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lh-stat .n i{font-size:16px;font-style:normal}
.lh-stat .l{font-size:12px;color:var(--text-dim);margin-top:6px}

/* ---------- 搜索 ---------- */
.lib-search{margin-bottom:28px;position:relative}
.ls-box{display:flex;align-items:center;gap:12px;padding:0 18px;border-radius:16px;background:var(--glass);backdrop-filter:blur(18px);border:1px solid var(--border);transition:.25s}
.ls-box:focus-within{border-color:var(--accent2);box-shadow:0 0 0 3px rgba(92,242,230,.12)}
.ls-ico{font-size:19px;color:var(--text-dim)}
.ls-box input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:15px;padding:15px 0;font-family:inherit}
.ls-box input::placeholder{color:rgba(245,247,255,.4)}
.ls-hint{font-size:11px;color:var(--text-dim);border:1px solid var(--border);padding:3px 8px;border-radius:6px;white-space:nowrap}
.ls-results{margin-top:12px;border-radius:16px;background:rgba(20,24,48,.9);backdrop-filter:blur(22px);border:1px solid var(--border);overflow:hidden;max-height:440px;overflow-y:auto}
.lsr-item{display:block;padding:14px 18px;text-decoration:none;color:var(--text);border-bottom:1px solid rgba(255,255,255,.06);transition:.2s}
.lsr-item:last-child{border-bottom:none}
.lsr-item:hover{background:var(--glass-strong)}
.lsr-top{display:flex;align-items:center;gap:9px;margin-bottom:5px;flex-wrap:wrap}
.lsr-col{font-size:11px;padding:2px 9px;border-radius:20px;background:rgba(179,136,255,.18);color:var(--accent)}
.lsr-title{font-size:14.5px;font-weight:600}
.lsr-snip{font-size:12.5px;color:var(--text-dim);line-height:1.55}
.lsr-snip mark{background:rgba(92,242,230,.22);color:var(--accent2);border-radius:3px;padding:0 2px}
.lsr-empty{padding:20px;text-align:center;color:var(--text-dim);font-size:13.5px}

/* ---------- 专栏卡片墙 ---------- */
.col-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.col-card{padding:26px;text-decoration:none;color:var(--text);display:flex;flex-direction:column;gap:11px;transition:.3s;position:relative;overflow:hidden}
.col-card::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(179,136,255,.1),transparent 60%);opacity:0;transition:.3s;pointer-events:none}
.col-card:hover{transform:translateY(-6px);border-color:rgba(92,242,230,.4)}
.col-card:hover::after{opacity:1}
.cc-top{display:flex;align-items:center;justify-content:space-between}
.cc-icon{font-size:32px;line-height:1}
.cc-count{font-size:11.5px;color:var(--text-dim);border:1px solid var(--border);padding:3px 10px;border-radius:20px}
.cc-title{font-size:19px;font-weight:700;color:var(--accent2);letter-spacing:-.3px}
.cc-desc{font-size:13.5px;color:var(--text-dim);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.cc-tags{display:flex;gap:6px;flex-wrap:wrap}
.cc-tags span{font-size:11px;padding:2px 9px;border-radius:20px;border:1px solid var(--border);color:var(--text-dim)}
.cc-progress{height:4px;border-radius:4px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:2px}
.cc-bar{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .5s cubic-bezier(.2,.8,.2,1)}
.cc-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11.5px;color:var(--text-dim);flex-wrap:wrap}
.cc-read{color:var(--accent3);font-weight:600}

/* ---------- 空状态 ---------- */
.lib-empty{padding:56px 28px;text-align:center}
.le-ico{font-size:44px;margin-bottom:14px}
.lib-empty h3{font-size:19px;margin-bottom:10px}
.lib-empty p{font-size:14px;color:var(--text-dim);line-height:1.7}
.lib-empty code{background:var(--glass-strong);padding:2px 7px;border-radius:5px;font-size:13px}

/* ---------- 专栏页 Hero ---------- */
.col-hero{padding:30px;display:flex;gap:24px;margin-bottom:22px}
.ch-icon{width:76px;height:76px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:38px;
  background:linear-gradient(135deg,rgba(179,136,255,.28),rgba(92,242,230,.18));border:1px solid var(--border)}
.ch-main{flex:1;min-width:0}
.ch-main h1{font-size:clamp(23px,3.4vw,32px);font-weight:800;letter-spacing:-.8px;margin-bottom:10px}
.ch-desc{font-size:14.5px;color:var(--text-dim);line-height:1.7;margin-bottom:12px}
.ch-meta{display:flex;gap:9px;flex-wrap:wrap;font-size:12.5px;color:var(--text-dim);margin-top:12px}
.ch-meta i{opacity:.4;font-style:normal}
.ch-prog{margin-top:16px;display:flex;align-items:center;gap:14px}
.chp-bar{flex:1;height:6px;border-radius:6px;background:rgba(255,255,255,.1);overflow:hidden}
.chp-txt{font-size:12.5px;white-space:nowrap}

/* ---------- 专栏页工具条 ---------- */
.doc-toolbar{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.doc-toolbar input{flex:1;min-width:200px;padding:12px 18px;border-radius:14px;background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--border);color:var(--text);font-size:14px;outline:none;font-family:inherit;transition:.25s}
.doc-toolbar input:focus{border-color:var(--accent2)}
.doc-toolbar input::placeholder{color:rgba(245,247,255,.4)}
.dt-btn{padding:12px 20px;border-radius:14px;background:var(--glass);border:1px solid var(--border);color:var(--text-dim);
  font-size:13px;cursor:pointer;transition:.25s;font-family:inherit}
.dt-btn:hover{color:var(--text);border-color:var(--accent3)}

/* ---------- 资料列表 ---------- */
.doc-list{display:flex;flex-direction:column;gap:11px}
.doc-item{padding:20px 24px;display:flex;align-items:center;gap:20px;text-decoration:none;color:var(--text);transition:.28s;position:relative;overflow:hidden}
.doc-item::before{content:"";position:absolute;left:0;top:0;height:100%;width:3px;background:linear-gradient(var(--accent),var(--accent2));transform:scaleY(0);transform-origin:bottom;transition:.3s}
.doc-item:hover{background:var(--glass-strong);transform:translateX(5px)}
.doc-item:hover::before{transform:scaleY(1)}
.doc-item.is-read{opacity:.62}
.doc-item.is-read .di-num{background:linear-gradient(135deg,rgba(92,242,230,.3),rgba(179,136,255,.2));color:var(--accent2)}
.di-num{width:44px;height:44px;flex-shrink:0;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;background:rgba(255,255,255,.07);border:1px solid var(--border);color:var(--text-dim);font-variant-numeric:tabular-nums}
.di-body{flex:1;min-width:0}
.di-body h3{font-size:16px;font-weight:600;margin-bottom:5px;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.di-done{font-size:10.5px;padding:2px 8px;border-radius:20px;background:rgba(92,242,230,.18);color:var(--accent2);font-weight:600}
.di-body p{font-size:13px;color:var(--text-dim);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.di-meta{display:flex;flex-direction:column;gap:3px;text-align:right;font-size:12px;color:var(--text-dim);white-space:nowrap;flex-shrink:0}
.doc-noresult{padding:36px;text-align:center;color:var(--text-dim);font-size:14px}

/* ---------- 阅读页 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:100;background:transparent}
.read-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent3));
  box-shadow:0 0 12px rgba(92,242,230,.55);transition:width .1s linear}
.doc-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:22px;align-items:start}
.doc-main{padding:38px 44px}
.dm-head{padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:8px}
.dm-tag{display:inline-block;font-size:11.5px;padding:4px 12px;border-radius:20px;background:rgba(179,136,255,.18);color:var(--accent);margin-bottom:14px}
.dm-head h1{font-size:clamp(24px,3.6vw,33px);font-weight:800;letter-spacing:-.9px;line-height:1.25;margin-bottom:12px}
.dm-meta{display:flex;gap:9px;flex-wrap:wrap;font-size:12.5px;color:var(--text-dim)}
.dm-meta i{opacity:.4;font-style:normal}
.dm-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
#markRead.done{background:linear-gradient(135deg,#5cf2e6,#7effd6);color:#0a0a1a}

/* 上下篇 */
.dm-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.dn-item{padding:16px 18px;border-radius:14px;background:var(--glass);border:1px solid var(--border);text-decoration:none;
  color:var(--text);display:flex;flex-direction:column;gap:5px;transition:.25s;min-width:0}
.dn-item:hover{background:var(--glass-strong);border-color:var(--accent2);transform:translateY(-3px)}
.dn-item.next{text-align:right}
.dn-item.disabled{opacity:.35;pointer-events:none}
.dn-l{font-size:11.5px;color:var(--accent2)}
.dn-t{font-size:13.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 侧栏目录 ---------- */
.doc-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:14px;max-height:calc(100vh - 108px);overflow-y:auto}
.doc-side::-webkit-scrollbar{width:5px}
.doc-side::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:4px}
.toc-box{padding:18px}
.toc-head{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:1px}
.toc-item{font-size:12.8px;color:var(--text-dim);text-decoration:none;padding:6px 10px;border-radius:8px;transition:.2s;
  border-left:2px solid transparent;line-height:1.45}
.toc-item.lv3{padding-left:22px;font-size:12.2px;opacity:.85}
.toc-item:hover{color:var(--text);background:var(--glass)}
.toc-item.active{color:var(--accent2);background:rgba(92,242,230,.1);border-left-color:var(--accent2)}
.toc-empty{font-size:12.5px;color:var(--text-dim)}
.side-list .sl-item{display:flex;align-items:center;gap:9px;padding:7px 9px;border-radius:8px;text-decoration:none;
  color:var(--text-dim);font-size:12.6px;transition:.2s}
.side-list .sl-item:hover{background:var(--glass);color:var(--text)}
.side-list .sl-item.cur{background:rgba(179,136,255,.16);color:var(--text);font-weight:600}
.sl-n{font-size:10.5px;min-width:19px;text-align:center;opacity:.65;font-variant-numeric:tabular-nums}
.sl-t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sl-done{color:var(--accent2);font-size:11px}

/* ---------- Markdown 正文排版 ---------- */
.md-body{font-size:15.6px;line-height:1.88;color:rgba(245,247,255,.93);padding-top:22px}
.md-body>*:first-child{margin-top:0}
.md-body h1,.md-body h2,.md-body h3,.md-body h4{font-weight:700;letter-spacing:-.3px;line-height:1.4;scroll-margin-top:92px}
.md-body h1{font-size:26px;margin:36px 0 14px}
.md-body h2{font-size:22px;margin:38px 0 15px;padding-bottom:9px;border-bottom:1px solid rgba(255,255,255,.12);color:var(--accent2)}
.md-body h3{font-size:18px;margin:28px 0 11px;color:#d9c8ff}
.md-body h4{font-size:15.6px;margin:22px 0 9px;color:var(--text)}
.md-body p{margin:0 0 15px}
.md-body a{color:var(--accent2);text-decoration:none;border-bottom:1px solid rgba(92,242,230,.35)}
.md-body a:hover{border-bottom-color:var(--accent2)}
.md-body strong{color:#fff;font-weight:700}
.md-body em{color:var(--accent3);font-style:italic}
.md-body ul,.md-body ol{margin:0 0 15px;padding-left:24px}
.md-body li{margin-bottom:7px}
.md-body li::marker{color:var(--accent)}
.md-body hr{border:none;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);margin:32px 0}
.md-body blockquote{margin:0 0 18px;padding:14px 20px;border-left:3px solid var(--accent);border-radius:0 12px 12px 0;
  background:rgba(179,136,255,.09);color:rgba(245,247,255,.85)}
.md-body blockquote p:last-child{margin-bottom:0}
/* 行内代码 */
.md-body code{background:rgba(255,255,255,.11);padding:2px 7px;border-radius:5px;font-size:.88em;
  font-family:'JetBrains Mono','SF Mono',Menlo,Consolas,monospace;color:#ffd9a0;word-break:break-word}
/* 代码块 */
.md-body pre{background:rgba(4,6,20,.66);border:1px solid rgba(255,255,255,.1);padding:16px 18px;border-radius:12px;
  overflow-x:auto;margin:0 0 18px;line-height:1.65}
.md-body pre code{background:none;padding:0;color:#c9e2ff;font-size:13.2px;white-space:pre}
.md-body pre::-webkit-scrollbar{height:7px}
.md-body pre::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:4px}
/* 代码块复制按钮：默认隐身，悬停浮现，不干扰阅读 */
.code-copy{position:absolute;top:8px;right:8px;padding:4px 11px;border-radius:7px;font-size:11.5px;cursor:pointer;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:var(--text-dim);
  opacity:0;transition:.2s;font-family:inherit}
.md-body pre:hover .code-copy{opacity:1}
.code-copy:hover{background:var(--accent);color:#0a0a1a;border-color:transparent}
/* 表格：学习资料里表格很多，单独做成可横向滚动的卡片 */
.md-body table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:13.6px;display:block;overflow-x:auto;white-space:nowrap}
.md-body th,.md-body td{padding:9px 14px;border:1px solid rgba(255,255,255,.12);text-align:left;vertical-align:top}
.md-body th{background:rgba(179,136,255,.16);color:#fff;font-weight:600;white-space:nowrap}
.md-body tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.md-body img{max-width:100%;border-radius:12px}
.md-body input[type=checkbox]{margin-right:7px;accent-color:var(--accent2)}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .doc-layout{grid-template-columns:1fr}
  .doc-side{position:static;max-height:none;order:-1}
  .side-list{display:none}
  .doc-main{padding:28px 22px}
}
@media(max-width:640px){
  .lib-page{padding:92px 0 30px}
  .col-hero{flex-direction:column;gap:16px;padding:22px}
  .ch-icon{width:60px;height:60px;font-size:30px}
  .doc-item{gap:14px;padding:16px}
  .di-num{width:38px;height:38px;font-size:13px}
  .di-meta{display:none}
  .dm-nav{grid-template-columns:1fr}
  .dn-item.next{text-align:left}
  .md-body{font-size:15px}
  .lh-stat{padding:11px 16px;min-width:78px}
  .lh-stat .n{font-size:21px}
}