/*! xh2e.cn — 成人免费PPT网站 Studio theme (clean blue, sidebar layout) */
:root{
  --pptx-bg:#f4f7fb;--pptx-bg2:#e9eef5;--pptx-fg:#1a2233;--pptx-mute:#5c6a7e;
  --pptx-line:#e0e6ee;--pptx-blue:#2964ff;--pptx-blue2:#5b86ff;
  --pptx-card:#ffffff;--pptx-radius:10px;--pptx-shadow:0 6px 20px rgba(30,60,120,.08);
  --pptx-grad:linear-gradient(135deg,var(--pptx-blue),var(--pptx-blue2));
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
.pptx-body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--pptx-bg);color:var(--pptx-fg);line-height:1.65;min-height:100vh}
a{color:var(--pptx-fg);text-decoration:none;transition:color .2s}
a:hover{color:var(--pptx-blue)}
img{max-width:100%;display:block}ul{list-style:none}
/* HEADER */
.pptx-header{background:#fff;border-bottom:1px solid var(--pptx-line);position:sticky;top:0;z-index:50}
.pptx-nav-wrap{max-width:1280px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.pptx-logo{display:flex;align-items:center;gap:10px}
.pptx-brand{font-size:20px;font-weight:700;color:var(--pptx-blue)}
.pptx-nav{display:flex;flex-wrap:wrap;gap:2px;flex:1}
.pptx-nav a{padding:8px 16px;border-radius:6px;font-size:14px;color:var(--pptx-mute);font-weight:500}
.pptx-nav a:hover{color:var(--pptx-blue);background:#f0f4fb}
.pptx-active{color:var(--pptx-blue)!important;background:#e6efff!important;font-weight:700}
.pptx-search{display:flex;background:#f4f7fb;border:1px solid var(--pptx-line);border-radius:24px;padding:4px 4px 4px 16px;min-width:240px}
.pptx-search input{flex:1;border:0;outline:0;background:transparent;font-size:14px}
.pptx-search button{background:var(--pptx-grad);border:0;color:#fff;width:30px;height:30px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.pptx-crumb{max-width:1280px;margin:14px auto 0;padding:0 24px;font-size:13px;color:var(--pptx-mute)}
.pptx-crumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.pptx-sep{margin:0 4px;color:#bcc4d1}
/* MAIN — uses sidebar layout for channel pages */
.pptx-main{max-width:1280px;margin:0 auto;padding:24px;display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:start}
.pptx-main.pptx-no-side{grid-template-columns:1fr}
.pptx-side{position:sticky;top:80px;background:#fff;border:1px solid var(--pptx-line);border-radius:12px;padding:18px;box-shadow:var(--pptx-shadow)}
.pptx-side h4{font-size:13px;color:var(--pptx-mute);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.pptx-side ul li a{display:block;padding:8px 12px;border-radius:6px;font-size:14px;color:var(--pptx-fg);transition:all .2s}
.pptx-side ul li a:hover{background:#f0f4fb;color:var(--pptx-blue)}
.pptx-side ul li a.pptx-side-active{background:var(--pptx-grad);color:#fff;font-weight:700}
.pptx-content{min-width:0}
.pptx-section-title{font-size:20px;font-weight:700;margin:30px 0 16px;display:flex;align-items:center;gap:10px}
.pptx-section-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--pptx-grad)}
/* HERO */
.pptx-hero{border-radius:14px;overflow:hidden;background:linear-gradient(135deg,#1a3a8a 0%,#2964ff 100%);padding:48px 40px;color:#fff;position:relative}
.pptx-hero::after{content:"";position:absolute;top:0;right:0;width:50%;height:100%;background:url('') center/cover;opacity:.18;mix-blend-mode:overlay}
.pptx-hero-img{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;mix-blend-mode:luminosity}
.pptx-hero-text{position:relative;z-index:2;max-width:680px}
.pptx-chip{display:inline-block;padding:4px 12px;border-radius:4px;background:rgba(255,255,255,.18);color:#fff;font-size:12px;font-weight:600}
.pptx-hero-text h2{font-size:32px;line-height:1.3;margin:14px 0 12px;font-weight:800}
.pptx-hero-text p{color:rgba(255,255,255,.85);margin-bottom:22px}
.pptx-hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.pptx-btn-primary,.pptx-btn-ghost{padding:11px 22px;border-radius:6px;font-weight:600;font-size:14px;transition:transform .2s}
.pptx-btn-primary{background:#fff;color:var(--pptx-blue)}
.pptx-btn-primary:hover{transform:translateY(-2px);color:var(--pptx-blue)}
.pptx-btn-ghost{border:1px solid rgba(255,255,255,.4);background:transparent;color:#fff}
.pptx-btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);color:#fff}
/* CHANNEL TILES */
.pptx-channel-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.pptx-tile{background:#fff;border:1px solid var(--pptx-line);border-radius:12px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.pptx-tile img{width:100%;aspect-ratio:5/3;object-fit:cover}
.pptx-tile:hover{transform:translateY(-4px);box-shadow:var(--pptx-shadow)}
.pptx-tile-meta{padding:14px 16px}
.pptx-tile-meta h3{font-size:15px;margin-bottom:4px;color:var(--pptx-fg)}
.pptx-tile-meta p{font-size:12px;color:var(--pptx-mute)}
/* CHANNEL HEAD */
.pptx-channel-head{padding:24px 28px;border-radius:12px;background:#fff;border:1px solid var(--pptx-line);box-shadow:var(--pptx-shadow)}
.pptx-channel-head h2{font-size:24px;margin:8px 0 8px;font-weight:800;color:var(--pptx-blue)}
.pptx-channel-head p{color:var(--pptx-mute)}
.pptx-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.pptx-tags span{font-size:12px;padding:4px 10px;border-radius:4px;background:#e6efff;color:var(--pptx-blue);font-weight:600}
/* CARDS — uniform grid with badge */
.pptx-cards{margin-top:18px;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.pptx-card{background:#fff;border:1px solid var(--pptx-line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s;position:relative}
.pptx-card:hover{transform:translateY(-4px);box-shadow:var(--pptx-shadow)}
.pptx-card-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#f0f4fb}
.pptx-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pptx-card:hover .pptx-card-thumb img{transform:scale(1.06)}
.pptx-duration{position:absolute;right:8px;top:8px;padding:3px 8px;background:var(--pptx-grad);color:#fff;font-size:11px;border-radius:4px;font-weight:600;letter-spacing:.5px}
.pptx-play{position:absolute;left:8px;bottom:8px;padding:3px 8px;background:rgba(0,0,0,.7);color:#fff;font-size:11px;border-radius:4px}
.pptx-card-body{padding:14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.pptx-card-body h3{font-size:14px;line-height:1.45;font-weight:700}
.pptx-card-body p{font-size:12px;color:var(--pptx-mute);flex:1}
.pptx-card-meta{display:flex;justify-content:space-between;font-size:11px;color:#9aa3b3}
/* REVIEWS */
.pptx-review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.pptx-review{padding:18px 20px;background:#fff;border:1px solid var(--pptx-line);border-radius:10px;box-shadow:var(--pptx-shadow)}
.pptx-review blockquote{font-size:14px;color:#2a3344;line-height:1.7}
.pptx-review figcaption{margin-top:10px;font-size:13px;color:var(--pptx-blue);font-weight:700}
/* CONTACT */
.pptx-contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.pptx-glass{padding:22px;background:#fff;border:1px solid var(--pptx-line);border-radius:12px;box-shadow:var(--pptx-shadow)}
.pptx-glass h3{margin-bottom:12px;font-size:16px;color:var(--pptx-blue)}
.pptx-glass li{padding:6px 0;color:var(--pptx-mute);font-size:14px;border-bottom:1px dashed var(--pptx-line)}
.pptx-glass li:last-child{border:0}
.pptx-share{margin-top:20px;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--pptx-mute)}
.pptx-share a{width:36px;height:36px;display:grid;place-items:center;border-radius:8px;background:#f4f7fb;color:var(--pptx-mute);transition:all .2s}
.pptx-share a:hover{background:var(--pptx-grad);color:#fff}
/* FAQ */
.pptx-faq details{background:#fff;border:1px solid var(--pptx-line);border-radius:10px;padding:14px 20px;margin-bottom:10px}
.pptx-faq details[open]{border-color:var(--pptx-blue)}
.pptx-faq summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between}
.pptx-faq summary::-webkit-details-marker{display:none}
.pptx-faq summary::after{content:"+";font-size:20px;color:var(--pptx-blue);transition:transform .25s}
.pptx-faq details[open] summary::after{transform:rotate(45deg)}
.pptx-faq p{margin-top:10px;color:var(--pptx-mute);font-size:14px}
/* FOOTER */
.pptx-footer{margin-top:60px;background:#1a2233;color:#aab4c4;padding:40px 24px 20px}
.pptx-foot-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
.pptx-foot-grid h4{margin-bottom:12px;font-size:15px;color:#fff}
.pptx-foot-grid p,.pptx-foot-grid li{color:#aab4c4;font-size:13px;line-height:1.9}
.pptx-foot-grid a{color:#aab4c4}.pptx-foot-grid a:hover{color:var(--pptx-blue2)}
.pptx-foot-copy{max-width:1280px;margin:24px auto 0;padding-top:18px;border-top:1px solid #2a3344;text-align:center;font-size:12px;color:#7a8499}
@media(max-width:900px){
  .pptx-main{grid-template-columns:1fr}.pptx-side{position:static}
  .pptx-foot-grid{grid-template-columns:1fr}
  .pptx-nav{order:3;flex:1 0 100%;overflow-x:auto;flex-wrap:nowrap}
  .pptx-hero{padding:32px 24px}.pptx-hero-text h2{font-size:22px}
}