:root{
  --bg-primary:#0a0e1a;
  --bg-secondary:#111827;
  --bg-card:#1a2238;
  --bg-card-hover:#222d45;
  --border:#2a3550;
  --text-primary:#e8ecf3;
  --text-secondary:#a0aec0;
  --text-muted:#6b7a94;
  --accent:#3b82f6;
  --accent-light:#60a5fa;
  --accent-dark:#2563eb;
  --accent-gradient:linear-gradient(135deg,#3b82f6 0%, #8b5cf6 100%);
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --shadow-sm:0 4px 12px rgba(0,0,0,0.3);
  --shadow-md:0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg:0 20px 60px rgba(59,130,246,0.15);
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:20px;
  --container:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:
    radial-gradient(circle at 20% 10%,rgba(59,130,246,0.08),transparent 50%),
    radial-gradient(circle at 80% 80%,rgba(139,92,246,0.06),transparent 50%);
  pointer-events:none;
  z-index:-1;
}

a{color:var(--accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-light)}

h1,h2,h3,h4{font-weight:700;line-height:1.25;color:unset}

img{max-width:100%;height:auto}

ul{list-style:none;padding:0;margin:0}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ===== HEADER ===== */
header.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(10,14,26,0.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  max-width:var(--container);
  margin:0 auto;
  padding:12px 24px;
}

.logo{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:700;
  color:var(--text-primary);
  text-decoration:none;
}

.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}

.logo-brand{
  font-size:26px;
  font-weight:700;
  font-family:"Georgia","Times New Roman","Playfair Display",serif;
  letter-spacing:-0.5px;
  background:linear-gradient(135deg,#3b82f6 0%,#8b5cf6 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.logo-subtitle{
  font-size:13px;
  font-weight:600;
  color:var(--text-secondary);
  letter-spacing:0.3px;
  margin-top:2px;
}

.logo-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--accent-gradient);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  box-shadow:0 4px 12px rgba(59,130,246,0.4);
}

.logo-img{
  height:60px;
  width:auto;
  display:block;
  object-fit:contain;
}

nav.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}

nav.main-nav a{
  padding:8px 16px;
  border-radius:var(--radius-sm);
  color:var(--text-secondary);
  font-size:14px;
  font-weight:500;
  transition:all .2s ease;
}

nav.main-nav a:hover{
  color:var(--text-primary);
  background:var(--bg-card);
}

nav.main-nav a.active{
  color:var(--accent-light);
  background:rgba(59,130,246,0.12);
}

.nav-cta{
  padding:8px 18px !important;
  background:var(--accent-gradient) !important;
  color:#fff !important;
  margin-left:8px;
}

.nav-cta:hover{
  background:var(--accent-dark) !important;
  color:#fff !important;
  box-shadow:0 6px 16px rgba(59,130,246,0.3);
}

.mobile-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:24px;cursor:pointer}

/* ===== HERO ===== */
.hero{
  padding:96px 0 80px;
  text-align:center;
  position:relative;
  overflow:hidden;
}

.hero-inner{
  max-width:900px;
  margin:0 auto;
}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  background:rgba(59,130,246,0.12);
  border:1px solid rgba(59,130,246,0.3);
  border-radius:999px;
  font-size:13px;
  color:var(--accent-light);
  margin-bottom:28px;
}

.hero h1{
  font-size:clamp(40px,6vw,72px);
  font-weight:800;
  margin-bottom:20px;
  background:linear-gradient(180deg,#fff 0%,#a0aec0 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.hero-subtitle{
  font-size:clamp(18px,2vw,22px);
  color:var(--text-secondary);
  margin-bottom:16px;
  max-width:720px;
  margin-left:auto;
  margin-right:auto;
}

.hero-tags{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:12px;
  margin:24px 0 40px;
}

.hero-tags span{
  padding:6px 14px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:999px;
  font-size:13px;
  color:var(--text-secondary);
}

.hero-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 32px;
  border-radius:var(--radius-md);
  font-size:15px;
  font-weight:600;
  transition:all .25s ease;
  border:none;
  cursor:pointer;
  text-decoration:none;
  white-space:nowrap;
}

.btn-primary{
  background:var(--accent-gradient);
  color:#fff;
  box-shadow:0 8px 24px rgba(59,130,246,0.3);
}

.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(59,130,246,0.45);
  color:#fff;
}

.btn-secondary{
  background:var(--bg-card);
  color:var(--text-primary);
  border:1px solid var(--border);
}

.btn-secondary:hover{
  background:var(--bg-card-hover);
  color:var(--text-primary);
}

.btn-outline{
  background:transparent;
  color:var(--text-primary);
  border:1px solid var(--border);
}

.btn-outline:hover{
  background:var(--bg-card);
  color:var(--text-primary);
}

.btn-lg{padding:16px 40px;font-size:16px}

/* ===== GENERAL SECTIONS ===== */
section{
  padding:80px 0;
}

.section-alt{
  background:linear-gradient(180deg,transparent 0%,rgba(26,34,56,0.3) 100%);
}

.section-head{
  text-align:center;
  max-width:720px;
  margin:0 auto 56px;
}

.section-head h2{
  font-size:clamp(28px,4vw,40px);
  margin-bottom:16px;
}

.section-head p{
  font-size:17px;
  color:var(--text-secondary);
}

.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--accent-light);
  margin-bottom:16px;
}

/* ===== INTRO / CONTENT ===== */
main{
  max-width:var(--container);
  margin:0 auto;
  padding:48px 24px 80px;
}

main > h1{
  font-size:clamp(32px,4vw,48px);
  margin:32px 0;
  text-align:center;
}

main > h2{
  font-size:26px;
  margin:48px 0 20px;
  padding-bottom:12px;
  border-bottom:1px solid var(--border);
}

main > h3{
  font-size:20px;
  margin:28px 0 12px;
  color:var(--text-secondary);
}

main > p{
  font-size:16px;
  color:var(--text-secondary);
  margin-bottom:16px 0;
}

main > ul{
  margin:16px 0;
  padding-left:24px;
  list-style:disc;
}

main > ul li{
  padding:6px 0;
  color:var(--text-secondary);
}

/* ===== FEATURE GRID ===== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:24px;
}

.feature-card{
  padding:32px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  transition:all .3s ease;
}

.feature-card:hover{
  transform:translateY(-4px);
  border-color:var(--accent);
  box-shadow:var(--shadow-lg);
}

.feature-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  background:rgba(59,130,246,0.15);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  margin-bottom:20px;
}

.feature-card h3{
  font-size:20px;
  margin-bottom:12px;
}

.feature-card p{
  color:var(--text-secondary);
  font-size:15px;
}

/* ===== CORE FEATURE / MODE-CARDS ===== */
.mode-card{
  padding:40px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  position:relative;
  overflow:hidden;
}

.mode-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:3px;
  background:var(--accent-gradient);
}

.mode-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
  gap:24px;
}

.mode-card h3{
  font-size:22px;
  margin-bottom:12px;
}

.mode-card p{
  color:var(--text-secondary);
  font-size:15px;
}

.mode-badge{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:rgba(16,185,129,0.15);
  color:#34d399;
  margin-bottom:16px;
}

/* ===== ACCELERATION / SPEED ===== */
.accel-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:20px;
  margin-top:32px;
}

.accel-item{
  padding:28px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  text-align:center;
}

.accel-level{
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:8px;
  text-transform:uppercase;
  letter-spacing:1px;
}

.accel-name{
  font-size:20px;
  font-weight:700;
  margin-bottom:8px;
}

.accel-desc{
  font-size:14px;
  color:var(--text-secondary);
}

.accel-speed{
  display:block;
  margin-top:12px;
  height:6px;
  background:var(--bg-primary);
  border-radius:999px;
  overflow:hidden;
}

.accel-speed-bar{
  height:100%;
  background:var(--accent-gradient);
  border-radius:999px;
}

/* ===== ADVANTAGES / BENEFITS ===== */
.advantage-list{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:16px;
}

.advantage-item{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:20px 24px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
}

.advantage-check{
  flex-shrink:0;
  width:24px;
  height:24px;
  border-radius:50%;
  background:rgba(16,185,129,0.15);
  color:#34d399;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  margin-top:2px;
}

.advantage-item p{
  color:var(--text-secondary);
  font-size:15px;
  margin:0;
}

/* ===== PRICING TABLE ===== */
.pricing-wrap{
  overflow-x:auto;
  margin:40px 0;
}

.pricing-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border);
}

.pricing-table th,.pricing-table td{
  padding:18px 24px;
  text-align:left;
  border-bottom:1px solid var(--border);
  font-size:15px;
}

.pricing-table thead th{
  background:var(--bg-card-hover);
  font-weight:700;
  color:var(--text-primary);
}

.pricing-table tbody tr:hover{background:rgba(59,130,246,0.05);}

.pricing-table tbody tr:last-child td{border-bottom:none}

.pricing-table td{
  color:var(--text-secondary);
}

.check{color:#34d399;font-weight:600}
.no-check{color:var(--text-muted)}

.pricing-cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
  margin-top:40px;
}

.price-card{
  padding:32px 28px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  text-align:left;
  position:relative;
  transition:all .3s ease;
}

.price-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}

.price-card.featured{
  border-color:var(--accent);
  background:linear-gradient(180deg,rgba(59,130,246,0.08) 0%,var(--bg-card) 100%);
}

.price-tier{
  font-size:13px;
  color:var(--text-muted);
  text-transform:uppercase;
  letter-spacing:1.5px;
  margin-bottom:8px;
  font-weight:600;
}

.price-name{
  font-size:22px;
  font-weight:700;
  margin-bottom:4px;
}

.price-desc{
  font-size:13px;
  color:var(--text-secondary);
  margin-bottom:16px;
}

/* ===== DOWNLOAD PAGE ===== */
.download-hero{
  padding:80px 0 60px;
  text-align:center;
}

.system-info{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:16px;
  margin:32px 0 40px;
}

.info-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  font-size:14px;
  color:var(--text-secondary);
}

.changelog{
  max-width:800px;
  margin:40px auto 0;
  padding:32px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
}

.changelog h2{
  text-align:center;
  margin-bottom:24px;
}

.changelog ul{
  list-style:none;
  padding:0;
}

.changelog ul li{
  padding:12px 0 12px 28px;
  position:relative;
  color:var(--text-secondary);
  border-bottom:1px solid var(--border);
}

.changelog ul li:last-child{border-bottom:none}

.changelog ul li::before{
  content:"✓";
  position:absolute;
  left:0;
  top:12px;
  color:var(--accent);
  font-weight:700;
}

/* ===== FAQ ===== */
.faq-list{
  max-width:800px;
  margin:0 auto;
}

.faq-item{
  padding:20px 28px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  margin-bottom:16px;
}

.faq-q{
  font-size:17px;
  font-weight:600;
  color:var(--text-primary);
  margin-bottom:10px;
}

.faq-a{
  color:var(--text-secondary);
  font-size:15px;
}

/* ===== TUTORIAL / STEPS ===== */
.step-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;
  margin:40px 0;
}

.step-card{
  padding:28px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  position:relative;
}

.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--accent-gradient);
  color:#fff;
  font-weight:700;
  font-size:16px;
  margin-bottom:16px;
}

.step-card h3{
  font-size:19px;
  margin-bottom:10px;
}

.step-card p{
  color:var(--text-secondary);
  font-size:14.5px;
}

/* ===== FOOTER ===== */
footer.site-footer{
  margin-top:80px;
  padding:48px 0 32px;
  border-top:1px solid var(--border);
  background:var(--bg-secondary);
}

.footer-top{
  display:grid;
  grid-template-columns:1fr auto;
  gap:32px;
  align-items:center;
  margin-bottom:32px;
  flex-wrap:wrap;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.footer-brand .logo{
  margin-bottom:8px;
}

.footer-brand .logo-img{
  height:50px;
}

.footer-brand .logo-brand{
  font-size:22px;
}

.footer-brand .logo-subtitle{
  font-size:12px;
}

.footer-brand p{
  color:var(--text-muted);
  font-size:14px;
}

.footer-links{
  display:flex;
  gap:24px;
  flex-wrap:wrap;
}

.footer-links a{
  color:var(--text-secondary);
  font-size:14px;
}

.footer-links a:hover{color:var(--accent-light)}

.footer-bottom{
  padding-top:24px;
  border-top:1px solid var(--border);
  text-align:center;
  color:var(--text-muted);
  font-size:13px;
}

/* ===== LEGAL PAGES ===== */
.legal-content{
  max-width:800px;
  margin:0 auto;
  padding:60px 24px 80px;
}

.legal-content h1{
  font-size:36px;
  margin-bottom:8px;
  text-align:center;
}

.legal-content .last-updated{
  text-align:center;
  color:var(--text-muted);
  margin-bottom:48px;
  font-size:14px;
}

.legal-content h2{
  font-size:22px;
  margin:40px 0 16px;
  color:var(--text-primary);
  padding-bottom:8px;
}

.legal-content p{
  color:var(--text-secondary);
  margin-bottom:16px 0;
  line-height:1.8;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px){
  .mobile-toggle{display:block}
  nav.main-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;right:0;
    flex-direction:column;
    background:var(--bg-secondary);
    padding:16px;
    border-bottom:1px solid var(--border);
    width:100%;
  }
  nav.main-nav.open{display:flex}
  nav.main-nav a{width:100%;text-align:left;padding:12px 16px}
  .nav-cta{margin-left:0;margin-top:8px;text-align:center !important}
  .header-inner{position:relative}
  section{padding:60px 0}
  .hero{padding:60px 0 50px}
  .footer-top{grid-template-columns:1fr;text-align:center}
  .footer-links{justify-content:center}
  .logo-img{height:48px}
  .logo-brand{font-size:22px}
  .logo-subtitle{font-size:12px}
  .footer-brand .logo-img{height:44px}
  .footer-brand .logo-brand{font-size:20px}
}

@media (max-width: 600px){
  .hero h1{font-size:36px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .pricing-table th,.pricing-table td{padding:12px 14px;font-size:14px}
  .logo-img{height:40px}
  .logo-brand{font-size:19px}
  .logo-subtitle{font-size:11px}
  .logo{gap:10px}
  .footer-brand .logo-img{height:36px}
  .footer-brand .logo-brand{font-size:18px}
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}

.fade-in{
  animation:fadeInUp .8s ease forwards;
  opacity:0;
}