*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#7c3aed;
  --primary-dark:#5b21b6;
  --accent:#f97316;
  --accent-light:#fb923c;
  --bg:#0f0f1a;
  --bg-card:#1a1a2e;
  --bg-card-hover:#222240;
  --text:#e8e8f0;
  --text-muted:#a0a0b8;
  --border:#2d2d44;
  --radius:12px;
  --shadow:0 4px 24px rgba(0,0,0,.35);
  --max-width: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(--accent)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(15,15,26,.92);
  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{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text)}
.logo img{width:36px;height:36px;border-radius:8px}
.nav-list{display:flex;gap:6px;list-style:none}
.nav-list a{
  display:block;padding:8px 14px;border-radius:8px;
  color:var(--text-muted);font-size:.9rem;
}
.nav-list a:hover,.nav-list a.active{color:var(--text);background:var(--bg-card)}
.menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer;padding:4px}

/* Ads bar - sticky below header */
#ads-bar{
  position:sticky;
  top:var(--header-h,64px);
  z-index:99;
  background:rgba(15,15,26,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  padding:10px 0;
}
#ads{
  display:flex;
  justify-content:center;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:12px;
  background:transparent;
  max-width:var(--max-width,1200px);
  margin:0 auto;
  padding:0 20px;
}
#ads>div{
  display:flex;
  flex-direction:column;
  align-items:center;
  width:70px;
  box-sizing:border-box;
}
#ads img{
  width:65px;
  height:65px;
  object-fit:cover;
  border-radius:18px;
  box-shadow:0 6px 18px rgba(24,24,24,.12);
  transition:transform 180ms ease,box-shadow 180ms 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(24,24,24,.18);
}
#ads figcaption,
#ads .caption{
  height:15px;
  font-size:11px;
  color:var(--text-muted);
  text-align:center;
  max-width:100px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  margin-top:4px;
}

/* Hero */
.hero{
  padding:60px 0 50px;
  background:linear-gradient(135deg,rgba(124,58,237,.15) 0%,rgba(249,115,22,.08) 100%);
  border-bottom:1px solid var(--border);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.hero h1{font-size:2.2rem;line-height:1.3;margin-bottom:16px;
  background:linear-gradient(135deg,#c084fc,#f97316);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{color:var(--text-muted);font-size:1.05rem;margin-bottom:24px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;border-radius:10px;font-weight:600;font-size:.95rem;
  border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;box-shadow:0 4px 16px rgba(124,58,237,.4);
}
.btn-outline{
  background:transparent;color:var(--text);
  border:1px solid var(--border);
}
.btn-outline:hover{border-color:var(--primary);color:var(--accent-light)}
.hero-img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}

/* Sections */
section{padding:56px 0}
.section-title{font-size:1.6rem;margin-bottom:8px;color:var(--text)}
.section-subtitle{color:var(--text-muted);margin-bottom:32px;font-size:.95rem}
.section-header{text-align:center;margin-bottom:40px}

/* Feature Grid */
.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);overflow:hidden;transition:border-color .2s,transform .2s;
}
.feature-card:hover{border-color:var(--primary);transform:translateY(-4px)}
.feature-card img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.feature-card-body{padding:18px}
.feature-card h3{font-size:1.05rem;margin-bottom:8px;color:var(--text)}
.feature-card p{font-size:.88rem;color:var(--text-muted);line-height:1.6}

/* Content blocks */
.content-block{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px;margin-bottom:28px;
}
.content-block h2{font-size:1.3rem;margin-bottom:16px;color:var(--accent-light)}
.content-block h3{font-size:1.1rem;margin:20px 0 10px;color:var(--text)}
.content-block p,.content-block li{color:var(--text-muted);font-size:.95rem}
.content-block ul,.content-block ol{padding-left:22px;margin-bottom:12px}
.content-block li{margin-bottom:6px}

/* Two column layout */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.two-col img{border-radius:var(--radius);border:1px solid var(--border)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}
.step{
  text-align:center;padding:24px 16px;
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
}
.step-num{
  width:40px;height:40px;line-height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-weight:700;margin:0 auto 12px;font-size:1.1rem;
}
.step h4{font-size:.95rem;margin-bottom:6px}
.step p{font-size:.82rem;color:var(--text-muted)}

/* FAQ */
.faq-item{border-bottom:1px solid var(--border);padding:18px 0}
.faq-item:last-child{border-bottom:none}
.faq-item h3{font-size:1rem;margin-bottom:8px;color:var(--text)}
.faq-item p{font-size:.9rem;color:var(--text-muted)}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb span{margin:0 6px}

/* Page header */
.page-header{padding:40px 0 30px;border-bottom:1px solid var(--border);margin-bottom:32px}
.page-header h1{font-size:1.8rem;margin-bottom:8px}
.page-header p{color:var(--text-muted);font-size:.95rem}

/* Legal pages */
.legal-content{max-width:860px;margin:0 auto;padding-bottom:60px}
.legal-content h2{font-size:1.2rem;margin:28px 0 12px;color:var(--accent-light)}
.legal-content p,.legal-content li{font-size:.92rem;color:var(--text-muted);margin-bottom:10px}
.legal-content ul{padding-left:22px}

/* Error pages */
.error-page{
  min-height:calc(100vh - var(--header-h) - 200px);
  display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 20px;
}
.error-code{font-size:5rem;font-weight:800;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  line-height:1;margin-bottom:12px}
.error-page h1{font-size:1.5rem;margin-bottom:12px}
.error-page p{color:var(--text-muted);margin-bottom:24px;max-width:480px}

/* Footer */
.site-footer{
  background:var(--bg-card);border-top:1px solid var(--border);
  padding:40px 0 24px;margin-top:40px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.88rem;margin-top:10px;line-height:1.6}
.footer-col h4{font-size:.95rem;margin-bottom:14px;color:var(--text)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text-muted);font-size:.88rem}
.footer-col a:hover{color:var(--accent-light)}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:20px;
  text-align:center;color:var(--text-muted);font-size:.82rem;
}

/* Internal links highlight */
.internal-links{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;
}
.internal-links a{
  padding:6px 14px;background:var(--bg);border:1px solid var(--border);
  border-radius:20px;font-size:.82rem;color:var(--text-muted);
}
.internal-links a:hover{border-color:var(--primary);color:var(--accent-light)}

/* Responsive */
@media(max-width:992px){
  .hero-grid,.two-col{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-list{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;
    background:var(--bg-card);border-bottom:1px solid var(--border);
    flex-direction:column;padding:12px;
  }
  .nav-list.open{display:flex}
  .menu-toggle{display:block}
  .hero h1{font-size:1.6rem}
  .hero{padding:36px 0 30px}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  section{padding:36px 0}
  .section-title{font-size:1.3rem}
}