*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f0f1a;--bg2:#1a1a2e;--bg3:#252540;
  --text:#e8e8f0;--text2:#a0a0b8;--accent:#ff6b9d;
  --accent2:#ff8c42;--gradient:linear-gradient(135deg,#ff6b9d,#ff8c42);
  --radius:12px;--shadow:0 4px 24px rgba(0,0,0,.4);
  --max: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);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent2)}
img{max-width:100%;height:auto;display:block}
.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 rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--text)}
.logo img{width:36px;height:36px;border-radius:8px}
.nav-desktop{display:flex;gap:28px;list-style:none}
.nav-desktop a{color:var(--text2);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;color:var(--text);font-size:1.5rem;cursor:pointer;padding:8px}

/* Mobile Nav */
.nav-mobile{display:none;position:fixed;top:var(--header-h);left:0;right:0;background:var(--bg2);border-bottom:1px solid rgba(255,255,255,.08);padding:16px 20px;z-index:99}
.nav-mobile.open{display:block}
.nav-mobile a{display:block;padding:12px 0;color:var(--text2);border-bottom:1px solid rgba(255,255,255,.05);font-size:1rem}
.nav-mobile a:last-child{border:none}

/* Hero */
.hero{padding:60px 0 40px;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.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:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{color:var(--text2);font-size:1.05rem;margin-bottom:24px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.tag{display:inline-block;padding:4px 14px;border-radius:20px;background:rgba(255,107,157,.12);color:var(--accent);font-size:.85rem;border:1px solid rgba(255,107,157,.2)}
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-weight:600;font-size:.95rem;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 16px rgba(255,107,157,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(255,107,157,.4);color:#fff}
.btn-outline{border:1px solid rgba(255,255,255,.2);color:var(--text);margin-left:12px}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.hero-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}

/* Sections */
.section{padding:56px 0}
.section-alt{background:var(--bg2)}
.section-title{font-size:1.6rem;margin-bottom:8px}
.section-sub{color:var(--text2);margin-bottom:32px;font-size:.95rem}
.section-title span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg3);border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.06);transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-card img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.feature-card-body{padding:16px}
.feature-card h3{font-size:1rem;margin-bottom:6px}
.feature-card p{color:var(--text2);font-size:.875rem}

/* Content Block */
.content-block{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px}
.content-block.reverse{direction:rtl}
.content-block.reverse>*{direction:ltr}
.content-block img{border-radius:var(--radius);box-shadow:var(--shadow)}
.content-block h2{font-size:1.4rem;margin-bottom:12px}
.content-block p{color:var(--text2);margin-bottom:12px;font-size:.95rem}
.content-block ul{padding-left:20px;color:var(--text2);font-size:.95rem}
.content-block li{margin-bottom:6px}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item{padding:24px;background:var(--bg3);border-radius:var(--radius);border:1px solid rgba(255,255,255,.06)}
.stat-num{font-size:2rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{color:var(--text2);font-size:.875rem;margin-top:4px}

/* FAQ */
.faq-list{max-width:800px}
.faq-item{border-bottom:1px solid rgba(255,255,255,.08);padding:20px 0}
.faq-item h3{font-size:1rem;margin-bottom:8px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-item p{color:var(--text2);font-size:.925rem;display:none;padding-top:8px}
.faq-item.open p{display:block}

/* Internal Links */
.link-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.link-card{display:flex;align-items:center;gap:12px;padding:16px;background:var(--bg3);border-radius:var(--radius);border:1px solid rgba(255,255,255,.06);color:var(--text);transition:border-color .2s}
.link-card:hover{border-color:var(--accent);color:var(--accent)}
.link-card svg{flex-shrink:0;opacity:.6}

/* Page Content (sub pages) */
.page-hero{padding:48px 0 32px;background:var(--bg2);text-align:center}
.page-hero h1{font-size:2rem;margin-bottom:8px}
.page-hero p{color:var(--text2)}
.page-content{padding:40px 0 60px;max-width:860px;margin:0 auto}
.page-content h2{font-size:1.3rem;margin:32px 0 12px;color:var(--accent)}
.page-content h3{font-size:1.1rem;margin:24px 0 8px}
.page-content p,.page-content li{color:var(--text2);margin-bottom:12px;font-size:.95rem}
.page-content ul,.page-content ol{padding-left:24px;margin-bottom:16px}
.page-content li{margin-bottom:6px}

/* 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-code{font-size:6rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page h1{font-size:1.5rem;margin:16px 0 8px}
.error-page p{color:var(--text2);margin-bottom:24px}

/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid rgba(255,255,255,.06);padding:40px 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(--text2);font-size:.875rem;margin-top:12px;line-height:1.6}
.footer-col h4{font-size:.9rem;margin-bottom:12px;color:var(--text)}
.footer-col a{display:block;color:var(--text2);font-size:.875rem;padding:4px 0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);color:var(--text2);font-size:.8rem}

/* Breadcrumb */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text2)}
.breadcrumb a{color:var(--text2)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{margin:0 6px}

/* Responsive */
@media(max-width:992px){
  .hero-grid,.content-block{grid-template-columns:1fr;gap:24px}
  .content-block.reverse{direction:ltr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-desktop{display:none}
  .menu-toggle{display:block}
  .hero h1{font-size:1.6rem}
  .hero{padding:40px 0 24px}
  .feature-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
  .btn-outline{margin-left:0;margin-top:12px;display:inline-block}
}

/* Ads bar placeholder */
.ads-fixed-wrap:empty{display:none}