@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root{--bg:#f5f7fa;--ink:#101828;--muted:#667085;--dark:#07111f;--dark2:#0d1b2d;--line:#dfe5ec;--accent:#3b82f6;--white:#fff}
*{box-sizing:border-box;scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65}
h1,h2,h3{font-family:"Space Grotesk",Inter,sans-serif;line-height:1.1;margin-top:0}
a{text-decoration:none;color:inherit}
.hero{min-height:92vh;color:#fff;background:radial-gradient(circle at 75% 25%,rgba(59,130,246,.3),transparent 30%),linear-gradient(135deg,#06101d,#10243a 55%,#07111f);position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 0 65%,rgba(255,255,255,.035) 65% 66%,transparent 66% 100%);pointer-events:none}
.navbar{height:78px;max-width:1180px;margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:3}
.logo{font-family:"Space Grotesk";font-weight:700;font-size:1.35rem;letter-spacing:.2px}
.nav-links{display:flex;gap:28px;font-size:.92rem;color:#d8e1ed}
.nav-links a:hover{color:#fff}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:1.7rem}
.hero-content{max-width:1180px;margin:auto;padding:13vh 24px 70px;position:relative;z-index:2}
.eyebrow,.section-tag{font-size:.75rem;letter-spacing:.18em;font-weight:800;color:#60a5fa}
.hero h1{font-size:clamp(3rem,7vw,6.6rem);max-width:900px;margin:18px 0}
.hero h1 span{color:#7dd3fc}
.hero-text{font-size:1.12rem;max-width:620px;color:#c7d3e2}
.hero-buttons{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 21px;border-radius:8px;font-weight:700;font-size:.9rem}
.primary{background:#fff;color:#0b1728}
.primary:hover{transform:translateY(-2px)}
.secondary{border:1px solid #52657c;color:#fff}
.scroll-hint{position:absolute;bottom:28px;left:24px;color:#94a3b8;font-size:.8rem}
.section{max-width:1180px;margin:auto;padding:100px 24px}
.section h2{font-size:clamp(2.1rem,4vw,3.5rem);margin:12px 0 18px}
.section-lead{max-width:700px;color:var(--muted);font-size:1.05rem}
.cards{display:grid;gap:18px;margin-top:45px}.three{grid-template-columns:repeat(3,1fr)}.four{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;padding:30px;border:1px solid var(--line);border-radius:14px;transition:.25s}.card:hover,.topic-card:hover,.engine-card:hover{transform:translateY(-5px);box-shadow:0 16px 35px rgba(16,24,40,.08)}
.icon{font-size:2rem;margin-bottom:18px}.card h3{font-size:1.25rem}.card p{color:var(--muted);font-size:.92rem}
.dark{max-width:none;background:var(--dark);color:#fff;padding-left:max(24px,calc((100% - 1132px)/2));padding-right:max(24px,calc((100% - 1132px)/2))}
.dark .section-heading{display:flex;justify-content:space-between;gap:50px;align-items:end}.dark .section-heading>p{max-width:430px;color:#93a4b8}.dark .section-tag{color:#60a5fa}
.topic-card{background:var(--dark2);border:1px solid #1e3147;padding:27px;border-radius:13px;transition:.25s}.topic-card span{color:#60a5fa;font-weight:800;font-size:.75rem}.topic-card h3{margin:35px 0 12px}.topic-card p{color:#9cafc4;font-size:.88rem}
.engine-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:45px}.engine-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px;transition:.25s}.engine-card.featured{background:#0d1b2d;color:#fff;border-color:#213b58}.engine-number{font-weight:800;color:var(--accent);font-size:.8rem}.engine-card h3{font-size:1.7rem;margin:18px 0}.engine-card p{color:var(--muted)}.featured p{color:#aebed0}.engine-card ul{list-style:none;padding:0;margin:25px 0 0;display:flex;gap:8px;flex-wrap:wrap}.engine-card li{border:1px solid var(--line);border-radius:20px;padding:5px 10px;font-size:.75rem}.featured li{border-color:#314960}
.news-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-top:45px}.news-card{background:#fff;padding:25px;border:1px solid var(--line);border-radius:12px;transition:.25s}.news-card:hover{transform:translateY(-5px);box-shadow:0 16px 35px rgba(16,24,40,.08)}.news-date{font-size:.8rem;font-weight:700;color:var(--accent);margin-bottom:10px}
.timeline-section{max-width:900px}.timeline{margin-top:45px;border-left:2px solid #cbd5e1;padding-left:28px}.timeline-item{position:relative;padding:0 0 38px}.timeline-item:before{content:"";position:absolute;width:10px;height:10px;background:var(--accent);border-radius:50%;left:-34px;top:8px}.timeline-item>span{font-weight:800;font-size:.78rem;color:var(--accent)}.timeline-item h3{margin:7px 0}.timeline-item p{margin:0;color:var(--muted)}
.cta{text-align:center;max-width:800px}.cta>p:not(.section-tag){color:var(--muted);margin:0 auto 30px;max-width:620px}
footer{background:#050c15;color:#94a3b8;text-align:center;padding:45px 24px}.footer-logo{font-family:"Space Grotesk";font-size:1.3rem;font-weight:700;color:#fff}.copyright{font-size:.75rem;margin-top:20px}
@media(max-width:800px){.nav-links{display:none;position:absolute;top:70px;right:20px;left:20px;background:#0d1b2d;padding:18px;border-radius:12px;flex-direction:column;gap:15px}.nav-links.open{display:flex}.menu-btn{display:block}.three,.four,.engine-grid{grid-template-columns:1fr}.dark .section-heading{display:block}.dark .section-heading>p{margin-top:20px}.section{padding-top:75px;padding-bottom:75px}.hero-content{padding-top:10vh}.hero h1{font-size:clamp(2.7rem,13vw,5rem)}}