/* 91PORN视频官网 - 全局样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0f;
  --bg-card:#14141f;
  --bg-card-hover:#1c1c2e;
  --primary:#ff9900;
  --primary-dark:#e68a00;
  --accent:#7c5cfc;
  --accent-light:#9b7dff;
  --text:#f0f0f5;
  --text-muted:#9a9ab0;
  --border:#2a2a3e;
  --radius:12px;
  --shadow:0 4px 24px rgba(0,0,0,.4);
  --max-w:1200px;
  --header-h:64px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  min-height:100vh;
}
a{color:var(--accent-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(10,10,15,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  height:var(--header-h);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{width:40px;height:40px;border-radius:8px}
.logo-text{font-size:1.25rem;font-weight:700;color:var(--text)}
.logo-text span{color:var(--primary)}
.main-nav{display:flex;gap:28px}
.main-nav a{color:var(--text-muted);font-size:.95rem;font-weight:500}
.main-nav a:hover,.main-nav a.active{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:.3s}

.hero{padding:60px 0 40px;background:linear-gradient(180deg,rgba(255,153,0,.08) 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:2.2rem;line-height:1.3;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-desc{color:var(--text-muted);font-size:1.05rem;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--bg-card);border:1px solid var(--border);
  padding:6px 14px;border-radius:20px;font-size:.85rem;color:var(--text-muted);
}
.badge strong{color:var(--primary)}
.btn-group{display:flex;flex-wrap:wrap;gap:14px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius);
  font-size:1rem;font-weight:600;border:none;cursor:pointer;transition:.2s;
}
.btn-primary{background:var(--primary);color:#000}
.btn-primary:hover{background:var(--primary-dark);color:#000}
.btn-outline{background:transparent;border:2px solid var(--accent);color:var(--accent-light)}
.btn-outline:hover{background:var(--accent);color:#fff}
.hero-phone{text-align:center}
.hero-phone img{max-width:280px;margin:0 auto;border-radius:24px;box-shadow:var(--shadow);border:3px solid var(--border)}

.section{padding:56px 0}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{font-size:1.75rem;margin-bottom:10px}
.section-header h2 em{font-style:normal;color:var(--primary)}
.section-header p{color:var(--text-muted);max-width:640px;margin:0 auto}
.section-label{display:inline-block;font-size:.8rem;text-transform:uppercase;letter-spacing:2px;color:var(--accent);margin-bottom:8px}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:.3s}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.feature-icon{
  width:48px;height:48px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:16px;
}
.feature-card h3{font-size:1.1rem;margin-bottom:8px}
.feature-card p{color:var(--text-muted);font-size:.9rem}

.showcase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.showcase-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.showcase-item img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.showcase-body{padding:20px}
.showcase-body h3{font-size:1.05rem;margin-bottom:8px;color:var(--primary)}
.showcase-body p{color:var(--text-muted);font-size:.9rem}

.media-brands{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.media-brand-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;text-align:center;transition:.3s;
}
.media-brand-card:hover{border-color:var(--primary)}
.media-brand-card h3{font-size:1rem;margin-bottom:8px;color:var(--text)}
.media-brand-card .stats{color:var(--accent-light);font-size:.88rem;margin-bottom:8px}
.media-brand-card p{color:var(--text-muted);font-size:.85rem}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag{
  background:var(--bg-card);border:1px solid var(--border);
  padding:8px 18px;border-radius:20px;font-size:.88rem;color:var(--text-muted);transition:.2s;
}
.tag:hover{border-color:var(--primary);color:var(--primary)}

.article-content{max-width:860px;margin:0 auto}
.article-content h2{font-size:1.4rem;margin:36px 0 14px;color:var(--primary)}
.article-content h3{font-size:1.15rem;margin:28px 0 10px}
.article-content p{margin-bottom:16px;color:var(--text-muted)}
.article-content ul,.article-content ol{margin:0 0 16px 24px;color:var(--text-muted)}
.article-content li{margin-bottom:8px}
.article-content strong{color:var(--text)}

.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:"+";font-size:1.2rem;color:var(--accent)}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{padding:0 24px 18px;color:var(--text-muted);font-size:.92rem;display:none}
.faq-item.open .faq-a{display:block}

.page-hero{padding:48px 0 32px;background:linear-gradient(180deg,rgba(255,153,0,.06) 0%,transparent 100%);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:1.8rem;margin-bottom:8px}
.page-hero p{color:var(--text-muted)}
.breadcrumb{font-size:.85rem;color:var(--text-muted);margin-bottom:12px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}

.error-page{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 20px}
.error-code{font-size:6rem;font-weight:800;color:var(--accent);line-height:1}
.error-page h1{font-size:1.5rem;margin:16px 0 8px}
.error-page p{color:var(--text-muted);margin-bottom:24px}

.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:48px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:12px}
.footer-col h4{font-size:.95rem;margin-bottom:14px;color:var(--text)}
.footer-col a{display:block;color:var(--text-muted);font-size:.88rem;margin-bottom:8px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{color:var(--text-muted);font-size:.82rem}

.download-banner{
  background:linear-gradient(135deg,rgba(124,92,252,.15),rgba(255,153,0,.1));
  border:1px solid var(--border);border-radius:var(--radius);padding:40px;text-align:center;margin:40px 0;
}
.download-banner h3{font-size:1.3rem;margin-bottom:10px}
.download-banner p{color:var(--text-muted);margin-bottom:20px}

.internal-links{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:32px 0}
.internal-link{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px;text-align:center;color:var(--text-muted);font-size:.9rem;transition:.2s;
}
.internal-link:hover{border-color:var(--primary);color:var(--primary)}

@media(max-width:992px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-phone{order:-1}
  .hero-phone img{max-width:220px}
  .hero-badges,.btn-group{justify-content:center}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .showcase-grid{grid-template-columns:1fr}
  .media-brands{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .internal-links{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{
    display:none;position:fixed;top:var(--header-h);left:0;right:0;
    background:var(--bg-card);flex-direction:column;padding:20px;
    border-bottom:1px solid var(--border);gap:16px;
  }
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .hero h1{font-size:1.6rem}
  .feature-grid{grid-template-columns:1fr}
  .media-brands{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .internal-links{grid-template-columns:1fr}
  .section{padding:40px 0}
}

/* ===== 首页专属样式 ===== */
.home-hero{
  position:relative;padding:72px 0 56px;overflow:hidden;
  background:radial-gradient(ellipse 80% 60% at 70% 20%,rgba(255,153,0,.12) 0%,transparent 60%),
             radial-gradient(ellipse 60% 50% at 10% 80%,rgba(124,92,252,.1) 0%,transparent 55%);
}
.home-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(42,42,62,.3) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(42,42,62,.3) 1px,transparent 1px);
  background-size:48px 48px;mask-image:linear-gradient(180deg,#000 30%,transparent 100%);
  pointer-events:none;
}
.home-hero-inner{
  position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
}
.home-hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,153,0,.12);border:1px solid rgba(255,153,0,.35);
  color:var(--primary);font-size:.82rem;font-weight:600;
  padding:6px 14px;border-radius:20px;margin-bottom:20px;
}
.home-hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);animation:home-pulse 2s infinite}
@keyframes home-pulse{0%,100%{opacity:1}50%{opacity:.4}}
.home-hero h1{font-size:2.5rem;line-height:1.25;margin-bottom:18px;letter-spacing:-.02em}
.home-hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--primary),#ffcc66);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.home-hero-lead{color:var(--text-muted);font-size:1.05rem;margin-bottom:32px;max-width:540px}
.home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.home-stat{
  background:rgba(20,20,31,.7);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 18px;backdrop-filter:blur(8px);
}
.home-stat strong{display:block;font-size:1.5rem;color:var(--primary);line-height:1.2;margin-bottom:4px}
.home-stat span{font-size:.8rem;color:var(--text-muted)}
.home-hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.home-phone-stack{position:relative;display:flex;justify-content:center;min-height:420px}
.home-phone-main{
  position:relative;z-index:2;max-width:240px;
  border-radius:28px;box-shadow:0 24px 64px rgba(0,0,0,.55);border:3px solid var(--border);
}
.home-phone-float{
  position:absolute;max-width:120px;border-radius:16px;
  box-shadow:0 12px 32px rgba(0,0,0,.45);border:2px solid var(--border);
}
.home-phone-float--tl{top:8%;left:0;transform:rotate(-8deg)}
.home-phone-float--br{bottom:5%;right:0;transform:rotate(6deg);z-index:3}

.home-strip{
  background:var(--bg-card);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:20px 0;
}
.home-strip-inner{display:flex;justify-content:center;flex-wrap:wrap;gap:32px 48px}
.home-strip-item{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:.9rem}
.home-strip-item svg{width:20px;height:20px;color:var(--primary);flex-shrink:0}

.home-bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.home-bento-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:16px;
  padding:28px;transition:border-color .25s,transform .25s;overflow:hidden;position:relative;
}
.home-bento-card:hover{border-color:rgba(124,92,252,.5);transform:translateY(-3px)}
.home-bento-card--lg{grid-column:span 6}
.home-bento-card--md{grid-column:span 4}
.home-bento-card--sm{grid-column:span 3}
.home-bento-num{
  font-size:2.5rem;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  opacity:.35;position:absolute;top:16px;right:20px;
}
.home-bento-card h3{font-size:1.1rem;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.home-bento-card p{color:var(--text-muted);font-size:.9rem;line-height:1.65}

.home-download{
  background:linear-gradient(160deg,rgba(124,92,252,.08) 0%,rgba(255,153,0,.06) 100%);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.home-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;margin-top:40px}
.home-steps::before{
  content:"";position:absolute;top:28px;left:16%;right:16%;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--primary));opacity:.35;
}
.home-step{text-align:center;padding:0 20px;position:relative}
.home-step-num{
  width:56px;height:56px;border-radius:50%;margin:0 auto 20px;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  display:flex;align-items:center;justify-content:center;
  font-size:1.25rem;font-weight:800;color:#fff;position:relative;z-index:1;
  box-shadow:0 4px 20px rgba(124,92,252,.35);
}
.home-step h3{font-size:1.05rem;margin-bottom:8px}
.home-step p{color:var(--text-muted);font-size:.88rem}

.home-brands-scroll{
  display:grid;grid-template-columns:repeat(6,1fr);gap:14px;
}
.home-brand-pill{
  background:var(--bg-card);border:1px solid var(--border);border-radius:14px;
  padding:20px 14px;text-align:center;transition:.25s;
}
.home-brand-pill:hover{border-color:var(--primary);background:var(--bg-card-hover)}
.home-brand-pill h3{font-size:.92rem;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.home-brand-pill .stats{font-size:.78rem;color:var(--accent-light);margin-bottom:6px}
.home-brand-pill p{font-size:.75rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.home-tabs-nav{
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:36px;
}
.home-tab-btn{
  background:var(--bg-card);border:1px solid var(--border);color:var(--text-muted);
  padding:10px 20px;border-radius:24px;font-size:.88rem;font-weight:500;
  cursor:pointer;transition:.2s;font-family:inherit;
}
.home-tab-btn:hover{border-color:var(--accent);color:var(--text)}
.home-tab-btn.active{
  background:linear-gradient(135deg,var(--accent),var(--primary));
  border-color:transparent;color:#fff;font-weight:600;
}
.home-tab-panel{display:none}
.home-tab-panel.active{display:block;animation:home-fadein .35s ease}
@keyframes home-fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.home-preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.home-preview-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:14px;overflow:hidden;
  transition:.25s;
}
.home-preview-card:hover{border-color:rgba(255,153,0,.4);transform:translateY(-4px)}
.home-preview-card img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.home-preview-info{padding:16px}
.home-preview-info h3{font-size:.95rem;color:var(--primary);margin-bottom:6px}
.home-preview-info p{font-size:.82rem;color:var(--text-muted);line-height:1.55}

.home-article-wrap{display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:start}
.home-toc{
  position:sticky;top:calc(var(--header-h) + 80px);
  background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:20px;
}
.home-toc h4{font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}
.home-toc a{
  display:block;font-size:.85rem;color:var(--text-muted);padding:8px 0;
  border-bottom:1px solid var(--border);transition:.2s;
}
.home-toc a:last-child{border-bottom:none}
.home-toc a:hover{color:var(--primary);padding-left:6px}

.home-tags-group{margin-bottom:28px}
.home-tags-group h4{font-size:.9rem;color:var(--text);margin-bottom:12px;padding-left:12px;border-left:3px solid var(--primary)}
.home-faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.home-faq-grid .faq-item{margin-bottom:0}

.home-cta{
  text-align:center;padding:56px 40px;
  background:linear-gradient(135deg,rgba(124,92,252,.12),rgba(255,153,0,.08));
  border:1px solid var(--border);border-radius:20px;margin-top:20px;
}
.home-cta h3{font-size:1.4rem;margin-bottom:10px}
.home-cta p{color:var(--text-muted);margin-bottom:24px;max-width:520px;margin-left:auto;margin-right:auto}

@media(max-width:992px){
  .home-hero-inner{grid-template-columns:1fr;text-align:center}
  .home-hero-lead{margin-left:auto;margin-right:auto}
  .home-hero-actions{justify-content:center}
  .home-phone-stack{min-height:360px;margin-bottom:20px}
  .home-phone-float--tl{left:5%}
  .home-phone-float--br{right:5%}
  .home-bento-card--lg,.home-bento-card--md,.home-bento-card--sm{grid-column:span 6}
  .home-brands-scroll{grid-template-columns:repeat(3,1fr)}
  .home-preview-grid{grid-template-columns:repeat(2,1fr)}
  .home-article-wrap{grid-template-columns:1fr}
  .home-toc{position:static;display:none}
  .home-steps::before{display:none}
  .home-steps{grid-template-columns:1fr;gap:32px}
  .home-faq-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .home-hero h1{font-size:1.75rem}
  .home-stats{grid-template-columns:1fr}
  .home-bento-card--lg,.home-bento-card--md,.home-bento-card--sm{grid-column:span 12}
  .home-brands-scroll{grid-template-columns:repeat(2,1fr)}
  .home-preview-grid{grid-template-columns:1fr}
  .home-phone-main{max-width:200px}
  .home-phone-float{max-width:90px}
}