*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0d0d12;--bg2:#16161f;--bg3:#1e1e2a;
  --text:#e8e8f0;--muted:#9a9ab0;
  --pink:#ff6b9d;--orange:#ff9f43;--purple:#a855f7;
  --grad:linear-gradient(135deg,var(--pink),var(--orange));
  --radius:12px;--shadow:0 8px 32px rgba(0,0,0,.45);
  --max:1180px;
}
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:1.75;min-height:100vh}
a{color:var(--pink);text-decoration:none;transition:color .2s}
a:hover{color:var(--orange)}
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(13,13,18,.92);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:64px;gap:16px}
.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}
.nav-desktop{display:flex;gap:28px;list-style:none}
.nav-desktop a{color:var(--muted);font-size:.95rem}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--pink)}
.nav-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;width:44px;height:44px;padding:0;background:transparent;border:none;cursor:pointer;border-radius:10px;flex-shrink:0;transition:background .2s;position:relative;z-index:111}
.nav-toggle:hover{background:rgba(255,255,255,.08)}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);margin:3px 0;border-radius:2px;transition:transform .25s ease,opacity .25s ease,background .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.nav-mobile{display:none;position:fixed;left:0;right:0;top:64px;bottom:0;width:100%;padding:16px 20px 24px;flex-direction:column;gap:0;list-style:none;z-index:110;overflow-y:auto;-webkit-overflow-scrolling:touch}
.nav-mobile.open{display:flex;background:var(--bg2)}
.nav-mobile li{width:100%}
.nav-mobile a{display:block;font-size:1.1rem;color:var(--text);padding:14px 12px;border-bottom:1px solid rgba(255,255,255,.08);border-radius:8px;transition:background .2s,color .2s}
.nav-mobile a:hover{background:rgba(255,107,157,.12);color:var(--pink)}

/* Ads bar (styles extended in ads.js) */
.ads-bar{position:sticky;top:64px;z-index:90}

/* Hero */
.hero{padding:60px 0 48px;background:radial-gradient(ellipse at 50% 0%,rgba(168,85,247,.15),transparent 60%)}
.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(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{color:var(--muted);font-size:1.05rem;margin-bottom:28px}
.btn-group{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:50px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--grad);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:1px solid rgba(255,255,255,.2)}
.btn-outline:hover{border-color:var(--pink);color:var(--pink)}
.hero-phone{max-width:320px;margin:0 auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.5))}

/* Sections */
section{padding:56px 0}
.section-title{text-align:center;margin-bottom:12px;font-size:1.75rem}
.section-sub{text-align:center;color:var(--muted);margin-bottom:40px;max-width:640px;margin-left:auto;margin-right:auto}
.section-alt{background:var(--bg2)}

/* Feature cards */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg3);border-radius:var(--radius);padding:28px;border:1px solid rgba(255,255,255,.05);transition:border-color .2s,transform .2s}
.feature-card:hover{border-color:rgba(255,107,157,.3);transform:translateY(-4px)}
.feature-card h3{font-size:1.15rem;margin-bottom:10px;color:var(--pink)}
.feature-card p{color:var(--muted);font-size:.95rem}

/* Content blocks */
.content-block{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin-bottom:48px}
.content-block.reverse{direction:rtl}
.content-block.reverse>*{direction:ltr}
.content-block h3{font-size:1.35rem;margin-bottom:12px}
.content-block p{color:var(--muted);margin-bottom:12px;font-size:.95rem}
.content-block .phone-shot{max-width:280px;margin:0 auto}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{background:var(--bg3);padding:24px;border-radius:var(--radius);text-align:center;position:relative}
.step::before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--grad);border-radius:50%;font-weight:700;margin:0 auto 14px;font-size:.9rem;color:#fff}
.step h4{margin-bottom:8px;font-size:1rem}
.step p{color:var(--muted);font-size:.88rem}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(255,255,255,.08);padding:20px 0}
.faq-item h4{font-size:1.05rem;margin-bottom:8px;cursor:pointer}
.faq-item p{color:var(--muted);font-size:.93rem}

/* Page content */
.page-hero{padding:48px 0 32px;text-align:center;background:var(--bg2)}
.page-hero h1{font-size:2rem;margin-bottom:8px}
.page-hero p{color:var(--muted)}
.page-content{padding-top:40px;padding-bottom:60px}
.page-content h2{font-size:1.4rem;margin:32px 0 12px;color:var(--pink)}
.page-content h3{font-size:1.15rem;margin:24px 0 10px}
.page-content p,.page-content li{color:var(--muted);margin-bottom:12px;font-size:.95rem}
.page-content ul,.page-content ol{padding-left:24px;margin-bottom:16px}
.page-content ul li{list-style:disc}

/* Error pages */
.error-page{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 20px}
.error-page h1{font-size:5rem;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}
.error-page p{color:var(--muted);margin-bottom:24px;font-size:1.1rem}

/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid rgba(255,255,255,.06);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(--muted);font-size:.9rem;margin-top:12px;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(--muted);font-size:.88rem}
.footer-col a:hover{color:var(--pink)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);color:var(--muted);font-size:.85rem}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.88rem;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb span{margin:0 8px}

/* Responsive */
@media(max-width:992px){
  .hero-grid,.content-block{grid-template-columns:1fr}
  .content-block.reverse{direction:ltr}
  .features-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-desktop{display:none}
  .nav-toggle{display:flex}
  .hero h1{font-size:1.65rem}
  .hero{padding:40px 0 32px}
  .features-grid,.steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  section{padding:40px 0}
  .section-title{font-size:1.45rem}
  .page-hero{padding:36px 0 24px}
  .page-hero h1{font-size:1.65rem}
  .page-hero .container,.container.page-content{padding-left:20px;padding-right:20px}
  .page-content{padding-top:28px;padding-bottom:40px}
  .error-page{padding:48px 20px}
}