/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:#0a0a0f;
  color:#e0e0e8;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,video{max-width:100%;display:block}
ul{list-style:none}

/* ===== TOKENS ===== */
:root{
  --c-bg:#0a0a0f;
  --c-surface:#12121a;
  --c-surface-2:#1a1a26;
  --c-border:#2a2a3a;
  --c-text:#e0e0e8;
  --c-text-2:#9090a8;
  --c-accent:#6366f1;
  --c-accent-light:#818cf8;
  --c-accent-glow:rgba(99,102,241,.35);
  --c-gradient:linear-gradient(135deg,#6366f1,#a78bfa,#38bdf8);
  --radius:12px;
  --radius-lg:20px;
  --shadow:0 4px 24px rgba(0,0,0,.4);
  --max-w:1200px;
}

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

/* ===== NAV ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,10,15,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.nav-logo{
  font-weight:700;font-size:1.2rem;
  display:flex;align-items:center;gap:8px;
}
.logo-icon{
  font-size:1.4rem;
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.nav-links{display:flex;gap:28px}
.nav-links a{font-size:.9rem;color:var(--c-text-2);transition:color .2s}
.nav-links a:hover{color:#fff}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:600;font-size:.95rem;
  border-radius:8px;padding:10px 22px;
  transition:all .25s;cursor:pointer;border:none;
}
.btn-sm{padding:7px 16px;font-size:.85rem}
.btn-lg{padding:14px 32px;font-size:1.05rem}
.btn-primary{
  background:var(--c-accent);color:#fff;
  box-shadow:0 0 20px var(--c-accent-glow);
}
.btn-primary:hover{
  background:var(--c-accent-light);
  box-shadow:0 0 32px var(--c-accent-glow);
  transform:translateY(-1px);
}
.btn-outline{
  background:transparent;color:var(--c-text);
  border:1px solid var(--c-border);
}
.btn-outline:hover{border-color:var(--c-accent);color:#fff}
.btn-block{width:100%;text-align:center}

/* ===== GRADIENT TEXT ===== */
.gradient-text{
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}

/* ===== HERO ===== */
.hero{
  position:relative;
  padding:160px 0 80px;
  text-align:center;
  overflow:hidden;
}
.hero-glow{
  position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:800px;height:800px;
  background:radial-gradient(circle,var(--c-accent-glow) 0%,transparent 70%);
  pointer-events:none;
  opacity:.5;
}
.hero-content{position:relative;z-index:1}
.hero-badge{
  display:inline-block;
  font-size:.8rem;font-weight:500;color:var(--c-accent-light);
  border:1px solid var(--c-border);border-radius:100px;
  padding:6px 18px;margin-bottom:28px;
  background:rgba(99,102,241,.08);
}
.hero h1{
  font-size:clamp(2.4rem,5.5vw,4.2rem);
  font-weight:800;line-height:1.15;
  margin-bottom:24px;
}
.hero-desc{
  font-size:1.15rem;color:var(--c-text-2);
  max-width:680px;margin:0 auto 36px;
  line-height:1.8;
}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.hero-video-wrapper{
  margin-top:60px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:0 8px 60px rgba(99,102,241,.15);
}

/* ===== VIDEO PLACEHOLDER ===== */
.video-placeholder{
  background:var(--c-surface);
  aspect-ratio:16/9;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-lg);
  overflow:hidden;
  cursor:pointer;
  transition:box-shadow .3s;
}
.video-placeholder:hover{
  box-shadow:0 0 40px var(--c-accent-glow);
}
.video-placeholder-inner{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  color:var(--c-text-2);font-size:.95rem;
}
.play-icon{
  width:64px;height:64px;
  border-radius:50%;
  background:rgba(99,102,241,.15);
  border:2px solid var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;color:var(--c-accent-light);
  transition:transform .25s,background .25s;
}
.video-placeholder:hover .play-icon{
  transform:scale(1.1);
  background:rgba(99,102,241,.25);
}

/* ===== SECTIONS ===== */
.section{padding:100px 0}
.section-dark{background:var(--c-surface)}
.section-label{
  font-size:.8rem;text-transform:uppercase;letter-spacing:2px;
  color:var(--c-accent-light);font-weight:600;
  margin-bottom:12px;text-align:center;
}
.section-title{
  font-size:clamp(1.8rem,4vw,2.8rem);
  font-weight:800;text-align:center;
  margin-bottom:18px;line-height:1.25;
}
.section-desc{
  text-align:center;color:var(--c-text-2);
  max-width:640px;margin:0 auto 52px;
  font-size:1.05rem;
}

/* ===== FEATURE GRID ===== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(270px,1fr));
  gap:20px;
  margin-bottom:64px;
}
.feature-card{
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:28px;
  transition:border-color .3s,transform .3s;
}
.feature-card:hover{
  border-color:var(--c-accent);
  transform:translateY(-3px);
}
.feature-card-highlight{
  border-color:rgba(99,102,241,.35);
  background:linear-gradient(160deg,rgba(99,102,241,.06),transparent 60%);
}
.feature-icon{
  font-size:1.6rem;margin-bottom:14px;
  width:44px;height:44px;
  border-radius:10px;
  background:rgba(99,102,241,.12);
  display:flex;align-items:center;justify-content:center;
}
.feature-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:.9rem;color:var(--c-text-2);line-height:1.65}

/* Feature Video */
.feature-video-section{text-align:center;margin-bottom:64px}
.feature-video-title{font-size:1.4rem;font-weight:700;margin-bottom:8px}
.feature-video-desc{color:var(--c-text-2);margin-bottom:28px;font-size:.95rem}

/* Feature Callout */
.feature-callout{
  display:flex;align-items:center;gap:40px;
  background:linear-gradient(135deg,rgba(99,102,241,.08),rgba(56,189,248,.06));
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:40px;
}
.feature-callout-content{flex:1}
.feature-callout-content h3{font-size:1.3rem;font-weight:700;margin-bottom:12px}
.feature-callout-content p{color:var(--c-text-2);font-size:.95rem;line-height:1.7}
.feature-callout-visual{
  flex-shrink:0;
}
.callout-badge{
  padding:18px 32px;
  border-radius:var(--radius);
  background:rgba(99,102,241,.1);
  border:1px solid var(--c-accent);
  font-weight:700;font-size:1.1rem;
  color:var(--c-accent-light);
  letter-spacing:1px;
}

/* ===== AI SECTION ===== */
.ai-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:20px;
  margin-bottom:56px;
}
.ai-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:32px;
  position:relative;
  overflow:hidden;
  transition:border-color .3s;
}
.ai-card:hover{border-color:var(--c-accent)}
.ai-card-number{
  font-size:2.4rem;font-weight:800;
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  opacity:.35;
  position:absolute;top:16px;right:20px;
}
.ai-card h3{font-size:1.05rem;font-weight:700;margin-bottom:10px}
.ai-card p{font-size:.9rem;color:var(--c-text-2);line-height:1.65}

.ai-video-section{text-align:center}
.ai-video-caption{
  margin-top:16px;font-size:.85rem;color:var(--c-text-2);
}

/* ===== ENGINE ===== */
.engine-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
  gap:24px;
  margin-bottom:64px;
}
.engine-item{
  text-align:center;
  padding:32px 24px;
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
}
.engine-stat{
  font-size:2.6rem;font-weight:800;
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:6px;
}
.engine-label{font-weight:700;margin-bottom:10px;font-size:1rem}
.engine-item p{font-size:.85rem;color:var(--c-text-2);line-height:1.6}

.engine-advantage{
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:48px;
}
.engine-advantage h3{font-size:1.4rem;font-weight:700;margin-bottom:28px;text-align:center}
.advantage-list{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:24px;
}
.advantage-item{display:flex;gap:14px;align-items:flex-start}
.advantage-check{
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:50%;
  background:rgba(99,102,241,.15);
  color:var(--c-accent-light);
  display:flex;align-items:center;justify-content:center;
  font-size:.85rem;font-weight:700;
  margin-top:2px;
}
.advantage-item strong{display:block;font-weight:700;margin-bottom:4px;font-size:.95rem}
.advantage-item p{font-size:.85rem;color:var(--c-text-2);line-height:1.6}

/* ===== COMPARE TABLE ===== */
.compare-table-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{
  width:100%;border-collapse:collapse;
  font-size:.9rem;
}
.compare-table th,.compare-table td{
  padding:14px 20px;
  text-align:center;
  border-bottom:1px solid var(--c-border);
}
.compare-table th{
  font-weight:600;color:var(--c-text-2);
  font-size:.8rem;text-transform:uppercase;letter-spacing:1px;
}
.compare-table td:first-child,.compare-table th:first-child{text-align:left}
.compare-highlight{
  background:rgba(99,102,241,.06) !important;
  border-left:1px solid rgba(99,102,241,.2);
  border-right:1px solid rgba(99,102,241,.2);
}
.compare-table thead .compare-highlight{
  color:var(--c-accent-light) !important;
  font-weight:700;
}
.check-yes{color:#4ade80;font-weight:700}
.check-no{color:#ef4444;opacity:.5}
.check-partial{
  color:#fbbf24;font-size:.8rem;font-weight:500;
}
.compare-price-row td{font-size:1rem;padding:20px}

/* ===== PRICING ===== */
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:24px;
  margin-bottom:40px;
}
.pricing-card{
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:40px 32px;
  position:relative;
  transition:border-color .3s;
}
.pricing-card:hover{border-color:var(--c-accent)}
.pricing-card-featured{
  border-color:var(--c-accent);
  box-shadow:0 0 40px var(--c-accent-glow);
}
.pricing-badge{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--c-accent);color:#fff;
  font-size:.75rem;font-weight:700;
  padding:4px 16px;border-radius:100px;
  letter-spacing:1px;
}
.pricing-name{
  font-weight:700;font-size:1.1rem;margin-bottom:12px;
}
.pricing-price{
  font-size:2.8rem;font-weight:800;
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.pricing-period{
  font-size:.85rem;color:var(--c-text-2);margin-bottom:24px;
}
.pricing-features{margin-bottom:28px}
.pricing-features li{
  padding:8px 0;font-size:.9rem;
  display:flex;align-items:center;gap:10px;
}
.pf-check{color:#4ade80;font-weight:700;flex-shrink:0}
.pf-x{color:var(--c-text-2);opacity:.4;flex-shrink:0}
.pf-disabled{color:var(--c-text-2);opacity:.5}

.pricing-lifetime{
  background:linear-gradient(135deg,rgba(99,102,241,.08),rgba(56,189,248,.05));
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:36px 40px;
  margin-bottom:24px;
}
.pricing-lifetime-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.pricing-lifetime h3{font-size:1.2rem;font-weight:700;margin-bottom:6px}
.pricing-lifetime p{color:var(--c-text-2);font-size:.9rem;max-width:600px}
.pricing-lifetime-price{text-align:center;flex-shrink:0}
.lifetime-amount{
  display:block;font-size:2.2rem;font-weight:800;
  background:var(--c-gradient);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.lifetime-note{font-size:.8rem;color:var(--c-text-2)}

.pricing-note{
  text-align:center;font-size:.82rem;color:var(--c-text-2);
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
  text-align:center;
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-bg) 100%);
  padding:100px 0 80px;
}
.cta-content h2{
  font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;margin-bottom:14px;
}
.cta-content p{color:var(--c-text-2);margin-bottom:28px;font-size:1.05rem}
.cta-platform{
  margin-top:18px;font-size:.82rem;color:var(--c-text-2);
}

/* ===== FOOTER ===== */
.footer{
  border-top:1px solid var(--c-border);
  padding:60px 0 0;
}
.footer-inner{
  display:flex;justify-content:space-between;
  gap:40px;flex-wrap:wrap;
  padding-bottom:40px;
}
.footer-brand{font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.footer-tagline{
  width:100%;font-size:.85rem;color:var(--c-text-2);font-weight:400;margin-top:8px;
}
.footer-links{display:flex;gap:60px;flex-wrap:wrap}
.footer-col{display:flex;flex-direction:column;gap:8px}
.footer-col h4{font-size:.8rem;text-transform:uppercase;letter-spacing:1px;color:var(--c-text-2);margin-bottom:4px}
.footer-col a{font-size:.9rem;color:var(--c-text-2);transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid var(--c-border);
  padding:20px 24px;
  text-align:center;
  font-size:.8rem;color:var(--c-text-2);
}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .nav-links{display:none}
  .hero{padding:120px 0 60px}
  .hero h1{font-size:2rem}
  .feature-callout{flex-direction:column}
  .pricing-grid{grid-template-columns:1fr}
  .pricing-lifetime-inner{flex-direction:column;text-align:center}
  .footer-inner{flex-direction:column}
  .footer-links{gap:32px}
  .engine-advantage{padding:28px}
}