:root{--bg:#0d0500;--surface:#1d0a02;--surface2:#2d1408;--border:#3d1f0c;--fire:#f97316;--fire-dark:#c2410c;--fire-glow:rgba(249,115,22,.15);--ember:#dc2626;--text:#fff5e6;--muted:#a07050;--radius:10px}
*{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:1140px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:100;background:rgba(13,5,0,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:800}
.logo em{color:var(--fire);font-style:normal}
.logo-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--fire),var(--ember));border-radius:8px;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:6px;font-size:0.9rem;color:var(--muted);transition:.2s;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--surface)}
.btn{padding:10px 24px;border-radius:6px;font-size:0.9rem;font-weight:700;cursor:pointer;border:none;transition:.2s;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:linear-gradient(90deg,var(--fire),var(--ember));color:#fff;box-shadow:0 4px 14px rgba(249,115,22,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(249,115,22,.4)}
.btn-outline{background:transparent;color:var(--fire);border:1px solid var(--fire-dark)}
.btn-outline:hover{background:var(--fire-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 - flame speed gauge dashboard */
.hero{padding:72px 0 60px}
.hero-flame{display:grid;grid-template-columns:1fr 360px;gap:48px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--fire-glow);border:1px solid var(--fire-dark);border-radius:6px;padding:6px 14px;font-size:0.78rem;color:var(--fire);margin-bottom:20px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.hero h1{font-size:3rem;font-weight:900;line-height:1.1;margin-bottom:18px;letter-spacing:-.02em}
.hero h1 em{background:linear-gradient(90deg,var(--fire),var(--ember));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:normal}
.hero-sub{color:var(--muted);font-size:1.05rem;line-height:1.7;margin-bottom:28px;max-width:480px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.fire-metrics{display:flex;gap:32px;flex-wrap:wrap}
.fire-metric strong{display:block;font-size:1.8rem;font-weight:900;color:var(--fire)}
.fire-metric span{font-size:0.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
/* Flame meter dashboard */
.flame-meter{background:linear-gradient(180deg,var(--surface),var(--surface2));border:1px solid var(--fire-dark);border-radius:16px;padding:30px 24px;text-align:center;box-shadow:0 0 40px rgba(249,115,22,.1)}
.flame-icon{font-size:3rem;margin-bottom:8px;filter:drop-shadow(0 0 12px var(--fire))}
.flame-meter-label{font-size:0.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:6px}
.flame-meter-value{font-size:3.4rem;font-weight:900;background:linear-gradient(180deg,var(--fire),var(--ember));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;margin-bottom:4px}
.flame-meter-unit{font-size:1rem;color:var(--muted);margin-bottom:18px}
.flame-bar{display:flex;gap:3px;justify-content:center;margin-bottom:14px}
.flame-bar span{width:8px;background:var(--surface2);border-radius:2px}
.flame-bar span:nth-child(1){height:10px;background:var(--fire)}
.flame-bar span:nth-child(2){height:14px;background:var(--fire)}
.flame-bar span:nth-child(3){height:18px;background:var(--fire)}
.flame-bar span:nth-child(4){height:22px;background:var(--fire)}
.flame-bar span:nth-child(5){height:26px;background:var(--fire)}
.flame-bar span:nth-child(6){height:30px;background:var(--ember)}
.flame-bar span:nth-child(7){height:34px;background:var(--ember)}
.flame-bar span:nth-child(8){height:38px;background:var(--ember)}
.flame-bar span:nth-child(9){height:42px;background:var(--ember)}
.flame-bar span:nth-child(10){height:46px;background:var(--ember)}
.flame-status{font-size:0.85rem;color:var(--fire);font-weight:600}
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head h2{font-size:2.2rem;font-weight:900;margin-bottom:10px;letter-spacing:-.02em}
.section-head p{color:var(--muted);max-width:540px;margin:0 auto}
.label{display:inline-block;background:var(--fire-glow);color:var(--fire);border:1px solid var(--fire-dark);border-radius:6px;padding:4px 12px;font-size:0.78rem;font-weight:700;margin-bottom:12px;text-transform:uppercase;letter-spacing:.06em}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:26px;transition:.2s;border-top:3px solid var(--fire-dark)}
.feat-card:hover{border-top-color:var(--fire);transform:translateY(-3px)}
.feat-icon{width:46px;height:46px;border-radius:10px;background:var(--fire-glow);border:1px solid var(--fire-dark);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:14px}
.feat-card h4{font-size:1rem;margin-bottom:8px;font-weight:700}
.feat-card p{color:var(--muted);font-size:0.88rem;line-height:1.7}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px;position:relative}
.price-card.hot{border-color:var(--fire-dark);box-shadow:0 0 30px rgba(249,115,22,.15)}
.price-hot-tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--fire),var(--ember));color:#fff;font-size:0.75rem;font-weight:700;padding:4px 14px;border-radius:6px;white-space:nowrap}
.price-name{font-size:1rem;font-weight:700;margin-bottom:6px}
.price-amount{font-size:2.6rem;font-weight:900;color:var(--fire);margin:10px 0 4px}
.price-amount span{font-size:1rem;font-weight:400;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:20px}
.price-list li{font-size:0.88rem;color:var(--muted);padding-left:20px;position:relative}
.price-list li::before{content:"🔥";position:absolute;left:0;font-size:0.7rem}
.faq-list{max-width:720px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:10px;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:600;cursor:pointer;text-align:left}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--muted);transition:.2s;flex-shrink:0;font-weight:700}
.faq-item.open .faq-q::after{transform:rotate(45deg);color:var(--fire)}
.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:52px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{color:var(--muted);font-size:0.85rem;line-height:1.6;max-width:260px;margin-top:12px}
.footer-col h4{font-size:0.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--fire);margin-bottom:14px;font-weight:700}
.footer-col li{margin-bottom:8px}
.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:20px;text-align:center}
.footer-bottom p{color:var(--muted);font-size:0.82rem}
.page-hero{padding:52px 0 40px;background:var(--surface);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2.1rem;font-weight:900;margin-bottom:8px}
.page-hero p{color:var(--muted)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.82rem;color:var(--muted);margin-bottom:12px}
.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:20px;margin-bottom:48px}
.dl-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:30px;text-align:center;border-top:3px solid var(--fire-dark)}
.dl-icon{font-size:2.5rem;margin-bottom:12px}
.dl-card h3{font-size:1.05rem;margin-bottom:6px;font-weight:700}
.dl-card p{color:var(--muted);font-size:0.85rem;margin-bottom:20px}
.dl-mobile{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:620px;margin:0 auto}
.sub-box{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:26px;margin-top:48px}
.sub-code{background:#000;border:1px solid var(--fire-dark);border-radius:8px;padding:14px 18px;font-family:monospace;font-size:0.88rem;color:var(--fire);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(--fire);font-weight:700;font-size:0.78rem}
.tut-content{max-width:820px}
.tut-sec{margin-bottom:48px}
.tut-sec h2{font-size:1.5rem;font-weight:800;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--fire-dark)}
.tut-sec h3{font-size:1rem;font-weight:700;margin:18px 0 10px;color:var(--fire)}
.tut-sec p{color:var(--muted);line-height:1.8;margin-bottom:10px}
.tut-sec ol,.tut-sec ul{color:var(--muted);padding-left:20px;line-height:2;margin-bottom:10px}
.tip-box{background:var(--fire-glow);border-left:3px solid var(--fire);border-radius:8px;padding:14px 16px;font-size:0.88rem;line-height:1.7;margin-top:14px}
@media(max-width:900px){
  .hero-flame{grid-template-columns:1fr;gap:32px}
  .feat-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .dl-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .hero h1{font-size:2.2rem}
  .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:62px;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}
}