:root{--bg:#0d0820;--surface:#16102e;--surface2:#221a3f;--border:#332863;--aurora:#a855f7;--aurora-dark:#7e22ce;--aurora-pink:#ec4899;--aurora-glow:rgba(168,85,247,.14);--text:#f3e8ff;--muted:#8470a8;--radius:18px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:100;background:rgba(13,8,32,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700}
.logo em{background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:normal}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--aurora),var(--aurora-pink));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:6px 14px;border-radius:10px;font-size:0.9rem;color:var(--muted);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--surface)}
.btn{padding:9px 22px;border-radius:12px;font-size:0.9rem;font-weight:600;cursor:pointer;border:none;transition:.2s;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(168,85,247,.3)}
.btn-outline{background:transparent;color:var(--aurora);border:1px solid var(--aurora-dark)}
.btn-outline:hover{background:var(--aurora-glow)}
.nav-cta{padding:7px 18px;font-size:0.85rem}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.menu-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
/* Hero - aurora gradient sweep */
.hero{padding:80px 0 70px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-30%;left:-10%;width:120%;height:160%;background:radial-gradient(ellipse at 20% 30%,var(--aurora-glow),transparent 50%),radial-gradient(ellipse at 80% 70%,rgba(236,72,153,.12),transparent 50%);pointer-events:none}
.hero-content{position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--aurora-glow);border:1px solid var(--aurora-dark);border-radius:24px;padding:6px 16px;font-size:0.82rem;color:var(--aurora);margin-bottom:22px}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.15;margin-bottom:18px;max-width:760px;margin-left:auto;margin-right:auto;letter-spacing:-.02em}
.hero h1 em{background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:normal}
.hero-sub{color:var(--muted);font-size:1.1rem;line-height:1.7;margin-bottom:32px;max-width:580px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:56px}
/* Aurora region cards */
.aurora-regions{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;max-width:960px;margin:0 auto}
.aurora-region{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px 12px;text-align:center;transition:.3s;position:relative;overflow:hidden}
.aurora-region::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent,var(--aurora-glow));opacity:0;transition:.3s}
.aurora-region:hover::before{opacity:1}
.aurora-region:hover{transform:translateY(-4px);border-color:var(--aurora-dark)}
.aurora-flag{font-size:2rem;margin-bottom:8px;display:block;position:relative}
.aurora-name{font-size:0.85rem;font-weight:600;position:relative}
.aurora-ping{font-size:0.72rem;color:var(--aurora);margin-top:4px;position:relative}
.section{padding:90px 0}
.section-head{text-align:center;margin-bottom:54px}
.section-head h2{font-size:2.2rem;font-weight:800;margin-bottom:12px;letter-spacing:-.02em}
.section-head p{color:var(--muted);max-width:540px;margin:0 auto}
.label{display:inline-block;background:var(--aurora-glow);color:var(--aurora);border:1px solid var(--aurora-dark);border-radius:24px;padding:4px 14px;font-size:0.78rem;font-weight:600;margin-bottom:14px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:28px;transition:.2s;position:relative;overflow:hidden}
.feat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));opacity:0;transition:.2s}
.feat-card:hover::before{opacity:1}
.feat-card:hover{border-color:var(--aurora-dark);transform:translateY(-2px)}
.feat-icon{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,var(--aurora-glow),rgba(236,72,153,.1));border:1px solid var(--aurora-dark);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:16px}
.feat-card h4{font-size:1.05rem;margin-bottom:8px}
.feat-card p{color:var(--muted);font-size:0.9rem;line-height:1.7}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:32px 28px;position:relative}
.price-card.hot{border-color:var(--aurora-dark);background:linear-gradient(180deg,var(--surface),rgba(168,85,247,.06))}
.price-hot-tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));color:#fff;font-size:0.75rem;font-weight:700;padding:4px 14px;border-radius:14px;white-space:nowrap}
.price-name{font-size:1rem;font-weight:600;margin-bottom:6px}
.price-amount{font-size:2.6rem;font-weight:800;background:linear-gradient(90deg,var(--aurora),var(--aurora-pink));-webkit-background-clip:text;background-clip:text;color:transparent;margin:12px 0 4px}
.price-amount span{font-size:1rem;font-weight:400;color:var(--muted);background:none;-webkit-text-fill-color:var(--muted)}
.price-period{font-size:0.82rem;color:var(--muted);margin-bottom:18px}
.price-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.price-list li{font-size:0.9rem;color:var(--muted);padding-left:20px;position:relative}
.price-list li::before{content:"✓";position:absolute;left:0;color:var(--aurora);font-weight:700}
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden}
.faq-q{width:100%;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;background:none;border:none;color:var(--text);font-size:0.95rem;font-weight:500;cursor:pointer;text-align:left}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--muted);transition:.2s;flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg);color:var(--aurora)}
.faq-a{max-height:0;overflow:hidden;transition:.3s}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 22px 18px;color:var(--muted);font-size:0.9rem;line-height:1.7}
footer{background:var(--surface);border-top:1px solid var(--border);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand p{color:var(--muted);font-size:0.88rem;line-height:1.7;max-width:280px;margin-top:14px}
.footer-col h4{font-size:0.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--muted);font-size:0.88rem;transition:.2s}
.footer-col a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:22px;text-align:center}
.footer-bottom p{color:var(--muted);font-size:0.82rem}
.page-hero{padding:60px 0 44px;background:var(--surface);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:10px;letter-spacing:-.02em}
.page-hero p{color:var(--muted)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.82rem;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--text)}
.breadcrumb span{color:var(--border)}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:54px}
.dl-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:32px;text-align:center}
.dl-icon{font-size:2.6rem;margin-bottom:14px}
.dl-card h3{font-size:1.1rem;margin-bottom:8px}
.dl-card p{color:var(--muted);font-size:0.85rem;margin-bottom:22px}
.dl-mobile{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:640px;margin:0 auto}
.sub-box{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:28px;margin-top:54px}
.sub-code{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-family:monospace;font-size:0.88rem;color:var(--aurora);word-break:break-all;margin-bottom:16px}
.sub-steps{counter-reset:step;display:flex;flex-direction:column;gap:10px}
.sub-steps li{font-size:0.9rem;color:var(--muted);padding-left:20px;position:relative}
.sub-steps li::before{content:counter(step);counter-increment:step;position:absolute;left:0;color:var(--aurora);font-weight:700;font-size:0.78rem}
.tut-content{max-width:840px}
.tut-sec{margin-bottom:54px}
.tut-sec h2{font-size:1.5rem;font-weight:800;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--border);letter-spacing:-.01em}
.tut-sec h3{font-size:1.05rem;font-weight:600;margin:22px 0 12px}
.tut-sec p{color:var(--muted);line-height:1.8;margin-bottom:12px}
.tut-sec ol,.tut-sec ul{color:var(--muted);padding-left:22px;line-height:2;margin-bottom:12px}
.tip-box{background:var(--aurora-glow);border:1px solid var(--aurora-dark);border-radius:14px;padding:16px 18px;font-size:0.9rem;line-height:1.7;margin-top:16px}
@media(max-width:900px){
  .aurora-regions{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .dl-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .hero h1{font-size:2.4rem}
  .aurora-regions{grid-template-columns:1fr 1fr}
  .feat-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:16px;gap:4px}
  .nav-links.open{display:flex}
  .menu-toggle{display:flex}
}