:root{
    --ytpanel-primary:#2f6fff;
    --ytpanel-primary-end:#1a53ea;
    --ytpanel-danger:#ff5d63;
    --ytpanel-bg-panel:rgba(30,32,38,.60);
    --ytpanel-border:rgba(255,255,255,.12);
    --ytpanel-text:#d9dee6;
    --ytpanel-text-dim:#8d96a3;
    --ytpanel-radius:26px;
    --ytpanel-code-bg:#1f2329;
    --ytpanel-shadow:0 22px 60px -22px rgba(0,0,0,.85),0 8px 34px -16px rgba(0,0,0,.6);
    --ytpanel-max-width:1380px;
    --ytpanel-font-size:16px;
    --ease-bounce:cubic-bezier(.34,1.56,.64,1);
}
.ytpanel-wrapper{max-width:var(--ytpanel-max-width);margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ytpanel-text);font-size:var(--ytpanel-font-size);line-height:1.75;-webkit-font-smoothing:antialiased;position:relative;}
.ytpanel-progress{position:fixed;left:0;top:0;right:0;height:4px;background:rgba(255,255,255,.06);z-index:300;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.ytpanel-progress-bar{width:0;height:100%;background:linear-gradient(90deg,var(--ytpanel-primary),var(--ytpanel-primary-end));box-shadow:0 0 0 1px rgba(255,255,255,.3),0 0 10px -2px rgba(47,111,255,.75);transition:width .2s ease-out;}
.ytpanel-header{background:var(--ytpanel-bg-panel);backdrop-filter:blur(22px) saturate(160%);-webkit-backdrop-filter:blur(22px) saturate(160%);border:1px solid var(--ytpanel-border);border-radius:var(--ytpanel-radius);padding:38px clamp(20px,2.4vw,46px) 34px;box-shadow:var(--ytpanel-shadow);position:relative;overflow:hidden;margin-bottom:26px;}
.ytpanel-header::before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(255,255,255,.10),rgba(255,255,255,0) 40%),radial-gradient(circle at 18% 22%,rgba(47,111,255,.25),transparent 65%);pointer-events:none;opacity:.6;mix-blend-mode:overlay;}
.ytpanel-title{margin:0 0 16px;font-size:clamp(24px,3.2vw,38px);line-height:1.25;font-weight:700;letter-spacing:.8px;background:linear-gradient(90deg,#fff,#b8c6dd);-webkit-background-clip:text;color:transparent;}
.ytpanel-meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:12.5px;letter-spacing:.4px;color:var(--ytpanel-text-dim);margin:0 0 18px;}
.ytpanel-meta .meta-item{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.08);padding:6px 12px;border-radius:14px;line-height:1.2;position:relative;}
.ytpanel-meta svg{width:16px;height:16px;opacity:.9;}
.ytpanel-tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px;}
.tool-btn{border:none;background:linear-gradient(145deg,#23262d,#191b20);color:#d6dce5;font-size:12.5px;padding:10px 14px;border-radius:14px;font-weight:500;letter-spacing:.5px;cursor:pointer;transition:background .3s,transform .35s var(--ease-bounce);box-shadow:0 4px 12px -6px rgba(0,0,0,.6),inset 0 0 0 1px rgba(255,255,255,.05);}
.tool-btn:hover{background:linear-gradient(145deg,#282c34,#1e2025);transform:translateY(-4px);}
.tool-btn:active{transform:translateY(0) scale(.92);}
.ytpanel-breadcrumb{font-size:12.5px;letter-spacing:.4px;color:var(--ytpanel-text-dim);margin:0 0 22px;display:flex;align-items:center;flex-wrap:wrap;gap:6px;}
.ytpanel-breadcrumb .crumb{text-decoration:none;color:#8fa6c6;padding:2px 6px;border-radius:8px;background:rgba(255,255,255,.06);transition:background .3s;}
.ytpanel-breadcrumb .crumb:hover{background:rgba(255,255,255,.15);}
.ytpanel-breadcrumb .crumb.current{background:rgba(255,255,255,.2);color:#fff;}
.ytpanel-breadcrumb .sep{opacity:.4;}
.ytpanel-article{background:var(--ytpanel-bg-panel);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);border:1px solid var(--ytpanel-border);border-radius:28px;padding:42px clamp(18px,2.6vw,54px) 50px;box-shadow:var(--ytpanel-shadow);position:relative;overflow:hidden;}
.ytpanel-article::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,0) 45%),radial-gradient(circle at 20% 24%,rgba(47,111,255,.18),transparent 60%);opacity:.55;pointer-events:none;}
.chapter-title{margin:0 0 24px;font-size:24px;line-height:1.3;font-weight:600;letter-spacing:.5px;color:#fff;}
.ytpanel-article-body{font-size:var(--ytpanel-font-size);line-height:1.85;letter-spacing:.3px;color:var(--ytpanel-text);word-break:break-word;}
.ytpanel-article-body p{margin:0 0 1.1em;}
.ytpanel-article-body img{max-width:100%;display:block;border-radius:0px;background:#121418;box-shadow:0 8px 30px -14px rgba(0,0,0,.65);transition:transform .6s var(--ease-bounce),box-shadow .6s;cursor:zoom-in;}
.ytpanel-article-body img:hover{transform:translateY(-6px) scale(1.02);box-shadow:0 16px 46px -16px rgba(0,0,0,.75);}
.ytpanel-article-body h2,
.ytpanel-article-body h3,
.ytpanel-article-body h4{font-weight:600;line-height:1.35;letter-spacing:.6px;color:#fff;scroll-margin-top:90px;}
.ytpanel-article-body h2{font-size:1.6em;margin:1.8em 0 .9em;}
.ytpanel-article-body h3{font-size:1.35em;margin:1.6em 0 .8em;color:#e5e9f0;}
.ytpanel-article-body h4{font-size:1.15em;margin:1.4em 0 .7em;color:#dae0e8;}
.ytpanel-article-body blockquote{margin:1.6em 0;padding:16px 20px;background:linear-gradient(145deg,#22262d,#181a1f);border:1px solid #2e343b;border-left:5px solid var(--ytpanel-primary);border-radius:14px;color:#ccd2da;position:relative;font-size:15px;}
.ytpanel-article-body pre{background:var(--ytpanel-code-bg);color:#d6e1ef;padding:18px 20px;border-radius:16px;overflow:auto;font-size:14px;line-height:1.55;box-shadow:0 8px 24px -12px rgba(0,0,0,.6);margin:1.6em 0;position:relative;}
.ytpanel-article-body pre code{background:transparent;padding:0;font-family:ui-monospace,Menlo,Consolas,monospace;}
.code-copy{position:absolute;top:10px;right:10px;z-index:2;border:none;border-radius:10px;padding:6px 10px;font-size:12px;color:#111;background:linear-gradient(135deg,var(--ytpanel-primary),var(--ytpanel-primary-end));cursor:pointer;box-shadow:0 8px 16px -8px rgba(47,111,255,.7);}
.ytpanel-article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14px;overflow:hidden;border-radius:16px;}
.ytpanel-article-body table th,
.ytpanel-article-body table td{border:1px solid rgba(255,255,255,.15);padding:10px 14px;text-align:left;}
.ytpanel-article-body table th{background:linear-gradient(135deg,var(--ytpanel-primary),var(--ytpanel-primary-end));color:#fff;font-weight:600;letter-spacing:.4px;}
.ytpanel-inner-pages{margin:40px -10px 10px;display:flex;flex-wrap:wrap;gap:10px;}
.inner-page-link{text-decoration:none;font-size:12.5px;padding:8px 14px;border-radius:12px;background:rgba(255,255,255,.1);color:#dbe2ea;letter-spacing:.4px;transition:background .25s,transform .25s;}
.inner-page-link:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);}
.inner-page-link.active{background:linear-gradient(135deg,var(--ytpanel-primary),var(--ytpanel-primary-end));color:#fff;box-shadow:0 8px 20px -10px rgba(47,111,255,.75);}
.ytpanel-nav-nextprev{margin:50px 0 16px;display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}
.np-card{position:relative;text-decoration:none;padding:16px 18px 20px;border-radius:18px;background:linear-gradient(145deg,#22262d,#181a1f);border:1px solid #2c3138;color:#dfe4ec;display:flex;flex-direction:column;gap:8px;transition:transform .45s var(--ease-bounce),box-shadow .45s;overflow:hidden;}
.np-card::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 24% 20%,rgba(47,111,255,.25),transparent 65%);opacity:.4;mix-blend-mode:overlay;transition:opacity .5s;}
.np-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px -16px rgba(0,0,0,.8);}
.np-card:hover::before{opacity:.7;}
.np-label{font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:#8aa1c6;}
.np-title{font-size:14px;font-weight:600;letter-spacing:.4px;line-height:1.45;color:#fff;max-height:3em;overflow:hidden;}
.ytpanel-tags{margin:34px 0 10px;font-size:13px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;letter-spacing:.4px;}
.ytpanel-tags .tag{text-decoration:none;background:linear-gradient(145deg,#24272e,#17191d);color:#dbe2ea;padding:6px 12px;border-radius:12px;font-size:12.5px;transition:background .3s,transform .3s;box-shadow:0 4px 12px -8px rgba(0,0,0,.6);}
.ytpanel-tags .tag:hover{background:linear-gradient(145deg,#2a2d35,#1d1f24);transform:translateY(-3px);}
.ytpanel-share{margin:32px 0 10px;display:flex;flex-wrap:wrap;gap:10px;}
.share-btn{border:none;background:linear-gradient(145deg,#23262d,#191b20);color:#d6dde6;font-size:12.5px;padding:10px 16px;border-radius:14px;letter-spacing:.5px;cursor:pointer;transition:background .3s,transform .35s var(--ease-bounce);box-shadow:0 4px 12px -6px rgba(0,0,0,.6),inset 0 0 0 1px rgba(255,255,255,.05);}
.share-btn:hover{background:linear-gradient(145deg,#282c34,#1e2025);transform:translateY(-4px);}
.share-btn:active{transform:translateY(0) scale(.92);}
.ytpanel-img-viewer{position:fixed;inset:0;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:0;visibility:hidden;transition:.35s;backdrop-filter:blur(8px);}
.ytpanel-img-viewer.active{opacity:1;visibility:visible;}
.ytpanel-img-viewer img{max-width:90vw;max-height:88vh;border-radius:20px;box-shadow:0 28px 80px -22px rgba(0,0,0,.9);animation:pop .55s var(--ease-bounce);cursor:zoom-out;}
@keyframes pop{0%{transform:translateY(30px) scale(.85);opacity:0;}60%{transform:translateY(-6px) scale(1.03);opacity:1;}100%{transform:translateY(0) scale(1);}}
.ytpanel-quickbar{position:fixed;left:50%;transform:translateX(-50%);bottom:66px;z-index:500;display:none;background:rgba(24,26,32,.86);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:6px;box-shadow:0 16px 40px -18px rgba(0,0,0,.75);}
.qb-btn{display:inline-flex;align-items:center;justify-content:center;min-width:64px;margin:0 4px;padding:8px 12px;font-size:12.5px;border-radius:12px;text-decoration:none;color:#e6ebf3;background:rgba(255,255,255,.08);}
.qb-btn:hover{background:rgba(255,255,255,.15);}
.qb-btn.disabled{opacity:.45;pointer-events:none;}
@media (max-width:980px){.ytpanel-quickbar{display:flex;}}
@media print{
    .ytpanel-progress,.ytpanel-tools,.ytpanel-toc,.ytpanel-breadcrumb,.ytpanel-share,.ytpanel-tags,.ytpanel-nav-nextprev,.ytpanel-inner-pages,.ytpanel-quickbar{display:none!important;}
    body{background:#fff;}
    .ytpanel-wrapper{padding:0;max-width:100%;}
    .ytpanel-header,.ytpanel-article{box-shadow:none;background:#fff;border:none;}
    .ytpanel-header::before,.ytpanel-article::before{display:none;}
    .ytpanel-title{background:none;-webkit-background-clip:initial;color:#000;}
    .ytpanel-article-body img{box-shadow:none;}
}
/* 章节导航 */
.ytpanel-nav-chapters{margin:42px 0 18px;display:flex;flex-wrap:wrap;gap:14px;align-items:stretch;background:linear-gradient(145deg,#22262d,#181a1f);border:1px solid #2c3138;border-radius:22px;padding:18px 20px;position:relative;box-shadow:0 10px 30px -16px rgba(0,0,0,.65);}
.chap-card{flex:1 1 260px;min-width:200px;text-decoration:none;background:linear-gradient(145deg,#262b33,#1d2025);border:1px solid #30363d;border-radius:16px;padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;color:#d6dce4;position:relative;overflow:hidden;transition:transform .45s var(--ease-bounce),box-shadow .45s;}
.chap-card::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 25% 25%,rgba(47,111,255,.25),transparent 65%);opacity:.45;mix-blend-mode:overlay;pointer-events:none;transition:.45s;}
.chap-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px -18px rgba(0,0,0,.75);}
.chap-card:hover::before{opacity:.75;}
.chap-label{font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:#8aa1c6;}
.chap-title{font-size:14px;font-weight:600;color:#fff;line-height:1.4;}
.chap-status{flex:0 0 auto;align-self:center;font-size:13px;padding:10px 18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;letter-spacing:.4px;color:#c5ced8;display:flex;align-items:center;gap:6px;}
@media (max-width:680px){
    .ytpanel-nav-chapters{flex-direction:column;padding:16px 16px 18px;}
    .chap-card{flex:1 1 auto;}
    .chap-status{width:100%;justify-content:center;}
}

/* ===== 猜你喜欢紧凑版 ===== */
.guesslike-block{
    margin:34px 0 26px;
    padding:18px clamp(12px,1.8vw,26px) 24px;
    border-radius:20px;
    background:linear-gradient(145deg,#22262d,#181a1f);
    border:1px solid #2c3138;
    position:relative;
    overflow:hidden;
    box-shadow:0 12px 32px -18px rgba(0,0,0,.65);
}
.guesslike-block::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(130deg,rgba(255,255,255,.06),rgba(255,255,255,0) 45%),
    radial-gradient(circle at 18% 20%,rgba(255,170,0,.18),transparent 60%);
    mix-blend-mode:overlay;opacity:.55;pointer-events:none;
}
.guesslike-head{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin:0 0 14px;
}
.guesslike-title{
    margin:0;font-size:19px;font-weight:600;display:flex;align-items:center;gap:10px;letter-spacing:.55px;color:#fff;
}
.guesslike-title .gl-badge{
    width:14px;height:14px;border-radius:50%;
    background:linear-gradient(135deg,#ff8a00,#ffcf4d);
    box-shadow:0 0 0 3px rgba(255,138,0,.18),0 4px 14px -6px rgba(255,138,0,.6);
}
.gl-desc{font-size:11.5px;color:#8b97a4;letter-spacing:.3px;}

.guesslike-grid{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(180px,1fr));
    gap:12px 14px;
}

.gl-item{
    position:relative;
    display:flex;
    flex-direction:column;
    text-decoration:none;
    background:linear-gradient(145deg,#272d32,#1c1f23);
    border:1px solid #2c3238;
    border-radius:14px;
    padding:10px 10px 12px;
    gap:6px;
    color:#d8dee6;
    transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .4s,border-color .35s;
    overflow:hidden;
}
.gl-item::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(circle at 24% 20%,rgba(255,170,0,.28),transparent 65%);
    opacity:.3;mix-blend-mode:overlay;pointer-events:none;transition:opacity .45s;
}
.gl-item:hover{
    transform:translateY(-5px);
    box-shadow:0 12px 30px -14px rgba(0,0,0,.72);
    border-color:rgba(255,170,0,.35);
}
.gl-item:hover::before{opacity:.55;}

.gl-cover{
    position:relative;
    aspect-ratio:5/3.4;
    background:#181a1d;
    border-radius:10px;
    overflow:hidden;
}
.gl-cover img{
    width:100%;height:100%;object-fit:cover;display:block;
    transition:transform .8s ease;
}
.gl-item:hover .gl-cover img{transform:scale(1.08);}
.gl-placeholder{
    width:100%;height:100%;display:flex;align-items:center;justify-content:center;
    color:#666;font-size:22px;
}

.gl-badge-cat{
    position:absolute;left:8px;bottom:8px;
    background:linear-gradient(135deg,#ffab26,#ff8a00);
    color:#111;font-size:10px;font-weight:600;
    padding:3px 8px;border-radius:999px;letter-spacing:.4px;
    box-shadow:0 5px 16px -8px rgba(255,170,0,.65);
}

.gl-body{
    padding:6px 4px 0;
    display:flex;
    flex-direction:column;
    gap:4px;
    flex:1;
}
.gl-name{
    margin:0;
    font-size:13px;
    line-height:1.35;
    font-weight:600;
    letter-spacing:.35px;
    max-height:2.7em;
    overflow:hidden;
    color:#fff;
}
.gl-meta{
    font-size:10.5px;
    gap:4px;
    line-height:1.2;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    color:#92a1b0;
}

@media (max-width:780px){
    .guesslike-block{padding:18px 16px 22px;margin:30px 0 24px;}
    .guesslike-grid{gap:10px 12px;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));}
    .gl-item{padding:8px 8px 10px;}
    .gl-name{font-size:12.5px;}
    .gl-meta{font-size:10px;}
    .gl-cover{aspect-ratio:5/3.8;}
}
@media (max-width:520px){
    .guesslike-head{margin-bottom:10px;}
    .gl-meta span:nth-child(2),
    .gl-meta span:nth-child(4){display:none;}
    .gl-cover{aspect-ratio:16/11;}
    .gl-item:hover{transform:translateY(-3px);}
}
@media (max-width:400px){
    .gl-meta{display:none;}
    .gl-name{max-height:2.4em;}
}