:root{
  --bg:#0a0e1a; --bg2:#0f1424; --surface:#141b2e; --border:#1f2940;
  --text:#e6ebf5; --muted:#8893a8; --accent:#6c5ce7; --accent2:#00d4ff;
  --grad:linear-gradient(135deg,#6c5ce7 0%,#00d4ff 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:10px;font-weight:600;font-size:15px;transition:all .25s;cursor:pointer;border:none}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 30px rgba(108,92,231,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(108,92,231,.5)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--accent2);background:rgba(0,212,255,.05)}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(12px);background:rgba(10,14,26,.7);border-bottom:1px solid var(--border)}
nav .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-weight:800;font-size:22px;letter-spacing:-.5px;display:flex;align-items:center;gap:10px}
.logo-mark{width:32px;height:32px;border-radius:8px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:18px}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{display:flex;gap:12px;align-items:center}
@media(max-width:768px){.nav-links{display:none}}

/* Hero */
.hero{position:relative;min-height:680px;padding:180px 0 120px;text-align:left;overflow:hidden;background:linear-gradient(90deg,rgba(4,10,25,.97) 0%,rgba(4,10,25,.78) 46%,rgba(4,10,25,.2) 100%),url("images/avanzalabs-hero-bg.png") center right / cover no-repeat}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:100px;background:rgba(108,92,231,.1);border:1px solid rgba(108,92,231,.3);color:var(--accent2);font-size:13px;font-weight:600;margin-bottom:32px}
.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--accent2);box-shadow:0 0 12px var(--accent2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(40px,6vw,72px);font-weight:800;letter-spacing:-2px;line-height:1.05;margin-bottom:24px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:clamp(17px,2vw,21px);color:var(--muted);max-width:620px;margin:0 0 40px}
.hero-cta{display:flex;gap:16px;justify-content:flex-start;flex-wrap:wrap}
@media(max-width:768px){.hero{min-height:620px;padding:150px 0 90px;background-position:65% center;background-image:linear-gradient(90deg,rgba(4,10,25,.98) 0%,rgba(4,10,25,.86) 60%,rgba(4,10,25,.48) 100%),url("images/avanzalabs-hero-bg.png")}}

/* Stats */
.stats{padding:60px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stat-num{font-size:42px;font-weight:800;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{color:var(--muted);font-size:14px;margin-top:4px}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}}

/* Sections */
.section{padding:100px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 64px}
.section-tag{color:var(--accent2);font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:2px;margin-bottom:12px}
.section h2{font-size:clamp(32px,4vw,48px);font-weight:800;letter-spacing:-1px;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:18px}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;transition:all .3s}
.feature:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.3)}
.feature-icon{width:52px;height:52px;border-radius:12px;background:rgba(108,92,231,.12);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px}
.feature h3{font-size:20px;font-weight:700;margin-bottom:10px}
.feature p{color:var(--muted);font-size:15px}
@media(max-width:768px){.features-grid{grid-template-columns:1fr}}

/* About */
.about{background:var(--bg2)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-text h2{font-size:clamp(28px,3.5vw,40px);font-weight:800;letter-spacing:-1px;margin-bottom:20px}
.about-text p{color:var(--muted);font-size:17px;margin-bottom:16px}
.about-list{list-style:none;margin-top:24px}
.about-list li{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;color:var(--text)}
.about-list li::before{content:"";width:20px;height:20px;border-radius:50%;background:var(--grad);flex-shrink:0;margin-top:3px}
.about-visual{aspect-ratio:1;border-radius:24px;background:var(--surface);border:1px solid var(--border);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.about-visual::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.08}
.orb{width:200px;height:200px;border-radius:50%;background:var(--grad);filter:blur(40px);opacity:.5;animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-20px)}}
@media(max-width:768px){.about-grid{grid-template-columns:1fr;gap:40px}.about-visual{max-width:320px;margin:0 auto}}

/* CTA */
.cta{padding:100px 0;text-align:center;position:relative;overflow:hidden}
.cta-box{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:64px 32px;position:relative;overflow:hidden}
.cta-box::before{content:"";position:absolute;top:-50%;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(108,92,231,.15) 0%,transparent 60%)}
.cta-box h2{font-size:clamp(32px,4vw,48px);font-weight:800;letter-spacing:-1px;margin-bottom:16px;position:relative}
.cta-box p{color:var(--muted);font-size:18px;margin-bottom:32px;position:relative}
.cta-box .hero-cta{position:relative}

/* Footer */
footer{border-top:1px solid var(--border);padding:48px 0}
footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
footer p{color:var(--muted);font-size:14px}
.footer-links{display:flex;gap:24px}
.footer-links a{color:var(--muted);font-size:14px;transition:color .2s}
.footer-links a:hover{color:var(--text)}