*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f0f1a;--bg2:#1a1a2e;--bg3:#252540;
  --text:#e8e8f0;--muted:#a0a0b8;
  --accent:#ff6b9d;--accent2:#ff8c42;--accent3:#c44dff;
  --border:#2d2d4a;--radius:12px;--max:1200px;
  --shadow:0 4px 24px rgba(0,0,0,.4);
  --header-h:68px
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.75;min-height:100vh}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent2)}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,15,26,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:var(--max);margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--text)}
.logo img{width:40px;height:40px;border-radius:10px}
.logo span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-desktop{display:flex;gap:28px;list-style:none}
.nav-desktop a{color:var(--muted);font-size:.95rem;font-weight:500}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--accent)}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:6px 0;transition:.3s}
.nav-mobile{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--border);padding:16px 20px}
.nav-mobile.open{display:block}
.nav-mobile a{display:block;padding:12px 0;color:var(--muted);border-bottom:1px solid var(--border);font-size:1rem}
.nav-mobile a:last-child{border-bottom:none}

/* Ads sticky bar */
.ads-sticky-bar{
  position:sticky;
  top:var(--header-h);
  z-index:99;
  background:rgba(26,26,46,.98);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  padding:10px 16px;
  box-shadow:0 4px 16px rgba(0,0,0,.25)
}
#ads{
  display:flex;
  justify-content:center;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:10px;
  background:transparent;
  max-width:var(--max);
  margin:0 auto
}
#ads>div{
  display:flex;
  flex-direction:column;
  align-items:center;
  width:70px;
  box-sizing:border-box
}
#ads figure{margin:0;padding:0}
#ads img{
  width:65px;
  height:65px;
  object-fit:cover;
  border-radius:18px;
  box-shadow:0 6px 18px rgba(24,24,24,.12);
  transition:transform .18s ease,box-shadow .18s ease;
  display:block;
  border:none;
  background:linear-gradient(135deg,#fff,#fff)
}
#ads a{
  display:inline-block;
  text-decoration:none;
  border-radius:15px
}
#ads img:hover{
  transform:translateY(-4px) scale(1.04);
  box-shadow:0 10px 24px rgba(255,107,157,.25)
}
#ads .caption{
  height:15px;
  font-size:11px;
  color:var(--muted);
  text-align:center;
  max-width:70px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  margin-top:4px
}

/* Hero */
.hero{background:linear-gradient(135deg,var(--bg2) 0%,#1e1030 50%,var(--bg) 100%);padding:60px 0 80px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,107,157,.12) 0%,transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:2.4rem;line-height:1.3;margin-bottom:20px;background:linear-gradient(135deg,#fff,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.05rem;color:var(--muted);margin-bottom:28px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:.95rem;font-weight:600;transition:transform .2s,box-shadow .2s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 4px 20px rgba(255,107,157,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(255,107,157,.5);color:#fff}
.btn-outline{background:transparent;color:var(--text);border:2px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.hero-img{border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--border)}

/* Sections */
section{padding:72px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:1.85rem;margin-bottom:12px}
.section-title p{color:var(--muted);max-width:640px;margin:0 auto;font-size:1rem}
.section-title .tag{display:inline-block;background:linear-gradient(135deg,var(--accent3),var(--accent));color:#fff;font-size:.75rem;padding:4px 14px;border-radius:20px;margin-bottom:12px;font-weight:600}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-img{aspect-ratio:9/16;object-fit:cover;width:100%;border-radius:0}
.card-body{padding:20px}
.card-body h3{font-size:1.1rem;margin-bottom:8px;color:var(--text)}
.card-body p{font-size:.9rem;color:var(--muted);line-height:1.65}

/* Feature blocks */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:64px}
.feature-row.reverse .feature-text{order:2}
.feature-row.reverse .feature-img{order:1}
.feature-text h3{font-size:1.5rem;margin-bottom:16px;color:var(--text)}
.feature-text p{color:var(--muted);margin-bottom:12px;font-size:.95rem}
.feature-text ul{margin:16px 0;padding-left:20px;color:var(--muted)}
.feature-text li{margin-bottom:8px;font-size:.95rem}
.feature-img img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px}
.step{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-align:center;position:relative}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:1.2rem;font-weight:700;margin-bottom:16px}
.step h4{font-size:1.05rem;margin-bottom:8px}
.step p{font-size:.88rem;color:var(--muted)}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem}
.faq-q::after{content:"+";font-size:1.4rem;color:var(--accent);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .35s,padding .35s;color:var(--muted);font-size:.93rem}
.faq-item.open .faq-a{max-height:400px;padding:0 24px 18px}

/* Content page */
.page-hero{padding:48px 0 32px;background:var(--bg2);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2rem;margin-bottom:8px}
.page-hero .breadcrumb{font-size:.88rem;color:var(--muted)}
.page-hero .breadcrumb a{color:var(--muted)}
.page-content{padding:48px 0 72px}
.page-content .prose{max-width:860px;margin:0 auto}
.prose h2{font-size:1.4rem;margin:36px 0 16px;color:var(--text);padding-bottom:8px;border-bottom:1px solid var(--border)}
.prose h3{font-size:1.15rem;margin:24px 0 12px;color:var(--text)}
.prose p,.prose li{color:var(--muted);font-size:.95rem;margin-bottom:14px}
.prose ul,.prose ol{padding-left:24px;margin-bottom:20px}
.prose a{color:var(--accent)}

/* Error pages */
.error-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;text-align:center;padding:40px 20px}
.error-page h1{font-size:6rem;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page h2{font-size:1.5rem;margin:16px 0 12px}
.error-page p{color:var(--muted);margin-bottom:28px;max-width:480px}

/* Footer */
.site-footer{background:var(--bg2);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:36px}
.footer-brand p{color:var(--muted);font-size:.88rem;margin-top:12px;line-height:1.7}
.footer-col h4{font-size:.95rem;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;color:var(--muted);font-size:.88rem;padding:4px 0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:.82rem}

/* Internal links bar */
.internal-links{background:var(--bg3);padding:32px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.internal-links h3{text-align:center;font-size:1.1rem;margin-bottom:20px}
.link-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.link-tags a{background:var(--bg2);border:1px solid var(--border);padding:8px 18px;border-radius:20px;font-size:.88rem;color:var(--muted);transition:all .2s}
.link-tags a:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,107,157,.08)}

/* Responsive */
@media(max-width:900px){
  .hero-grid,.feature-row{grid-template-columns:1fr;gap:32px}
  .feature-row.reverse .feature-text,.feature-row.reverse .feature-img{order:unset}
  .hero h1{font-size:1.85rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-desktop{display:none}
  .menu-toggle{display:block}
}
@media(max-width:600px){
  section{padding:48px 0}
  .hero{padding:40px 0 56px}
  .footer-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .hero-btns{flex-direction:column}
  .btn{text-align:center;justify-content:center}
  #ads>div{width:62px}
  #ads img{width:58px;height:58px}
}