:root{--bg:#071224;--bg-alt:#0a1730;--card:#0e1c3a;--text:#e6f4ff;--muted:#b6d0e8;--primary:#14b8ff;--primary-600:#0ea5e9;--ring:#22d3ee33;--glow:#14b8ff33;--container:1120px}*{box-sizing:border-box}body,html{padding:0;margin:0;height:100%}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;background:linear-gradient(180deg,var(--bg),#071a33 50%,#051225 100%);color:var(--text);line-height:1.6}main{display:block}.container{max-width:var(--container);margin:0 auto;padding:0 24px}.hero{position:relative;padding:88px 0 56px;text-align:center;overflow:hidden;background:radial-gradient(1200px 600px at 50% -20%,var(--ring),transparent 60%),linear-gradient(180deg,transparent 0,#08204255 100%)}.hero:before{content:"";position:absolute;inset:-10% -20% auto -20%;height:70vh;background:conic-gradient(from 180deg at 50% 50%,#14b8ff22,#22d3ee11,transparent 70%);filter:blur(32px);transform:translateY(-20px) rotate(8deg);pointer-events:none;animation:ozonePulse 9s ease-in-out infinite}.hero h1{font-size:clamp(40px,6vw,64px);line-height:1.05;margin:0 0 8px}.tagline{font-size:clamp(16px,2.4vw,20px);color:var(--muted);margin:0 0 16px}.lede{max-width:820px;margin:0 auto 24px;color:var(--text)}.cta{display:flex;gap:12px;margin-top:8px;flex-wrap:wrap}.btn,.cta{justify-content:center}.btn{display:inline-flex;align-items:center;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:600;transition:transform .06s ease,background .2s ease,box-shadow .2s ease}.btn:hover{transform:translateY(-1px)}.btn:focus-visible{outline:2px solid var(--ring);outline-offset:2px}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 24px -12px var(--ring)}.btn-primary:hover{background:var(--primary-600)}.btn-secondary{background:transparent;color:var(--text);border:1px solid #2a365a}.btn-secondary:hover{background:#0f1730}.section{padding:56px 0}.section.alt{position:relative;background:radial-gradient(800px 400px at 10% 0,#22d3ee14,transparent 60%),radial-gradient(800px 400px at 90% 0,#14b8ff12,transparent 60%),var(--bg-alt);overflow:hidden}.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:16px}.grid-3,.grid-4{display:grid;gap:16px}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px}h2{font-size:clamp(24px,3.6vw,36px);margin:0 0 12px}.card{background:var(--card);border:1px solid #1b2544;border-radius:14px;padding:20px;box-shadow:0 12px 32px -24px rgba(0,0,0,.65),inset 0 0 0 1px #09142a;transition:transform .08s ease,box-shadow .2s ease,border-color .2s ease}.card:hover{transform:translateY(-2px);box-shadow:0 18px 38px -24px rgba(0,0,0,.7),0 0 0 1px var(--glow) inset}.card h3{margin:4px 0 8px}.card p{color:var(--muted)}.steps{margin:8px 0 0 20px}.steps li{margin:10px 0;color:var(--muted)}.footer{padding:32px 0;border-top:1px solid #1b2544;background:#0a0f1d}.footer small{color:#aab6d6}.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}.skip-link:focus{position:static;width:auto;height:auto;padding:.5rem;background:#000;color:#fff;border-radius:8px}@keyframes ozonePulse{0%,to{opacity:.08}50%{opacity:.14}}.aurora-divider{height:3px;background:linear-gradient(90deg,#14b8ff22,#22d3ee44,#14b8ff22);border:0}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:16px;gap:16px}.compare h3{margin:0 0 6px}.bullets{list-style:none;padding:0;margin:12px 0 0}.bullets li:before{content:"";display:inline-block;width:.6em;height:.6em;margin-right:.5em;border-radius:999px;box-shadow:inset 0 0 0 2px #14b8ff66}.muted-note{color:var(--muted);margin-top:8px}.ozone-mark{vertical-align:middle;filter:drop-shadow(0 0 8px #14b8ff22)}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}