:root{--accent: #1e3a8a;--accent-bright: #2563eb;--accent-soft: rgba(37, 99, 235, .12);--bg: #f8fafc;--bg-alt: #ffffff;--bg-card: #ffffff;--text: #0f172a;--text-muted: #475569;--border: #e2e8f0;--shadow: 0 4px 24px rgba(15, 23, 42, .06);--shadow-hover: 0 12px 40px rgba(30, 58, 138, .15);--header-bg: rgba(248, 250, 252, .85)}[data-theme=dark]{--accent: #3b82f6;--accent-bright: #60a5fa;--accent-soft: rgba(59, 130, 246, .15);--bg: #0b1120;--bg-alt: #0f172a;--bg-card: #131c31;--text: #e2e8f0;--text-muted: #94a3b8;--border: #1e293b;--shadow: 0 4px 24px rgba(0, 0, 0, .35);--shadow-hover: 0 12px 40px rgba(59, 130, 246, .2);--header-bg: rgba(11, 17, 32, .85)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background:var(--bg);color:var(--text);line-height:1.7;transition:background .3s ease,color .3s ease;-webkit-font-smoothing:antialiased}.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background .3s ease}.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}.site-logo{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--text);letter-spacing:-.02em}.site-logo span{color:var(--accent-bright)}.nav-links{display:flex;align-items:center;gap:1.75rem;list-style:none}.nav-links a{text-decoration:none;color:var(--text-muted);font-size:.95rem;font-weight:500;transition:color .2s ease;position:relative}.nav-links a:after{content:"";position:absolute;bottom:-4px;left:0;width:0%;height:2px;background:var(--accent-bright);transition:width .25s ease}.nav-links a:hover,.nav-links a.active{color:var(--text)}.nav-links a:hover:after,.nav-links a.active:after{width:100%}.header-actions{display:flex;align-items:center;gap:.75rem}.theme-toggle{background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;display:grid;place-items:center;cursor:pointer;color:var(--text);transition:border-color .2s ease,transform .2s ease}.theme-toggle:hover{border-color:var(--accent-bright);transform:rotate(15deg)}.theme-toggle svg{width:18px;height:18px}[data-theme=dark] .icon-moon{display:none}[data-theme=light] .icon-sun,:root:not([data-theme=dark]) .icon-sun{display:none}[data-theme=dark] .icon-sun{display:block}.menu-btn{display:none;background:none;border:none;cursor:pointer;color:var(--text);width:38px;height:38px}.hero{min-height:92vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:68px}.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 70% 20%,var(--accent-soft),transparent),radial-gradient(ellipse 50% 40% at 20% 80%,var(--accent-soft),transparent);pointer-events:none}.hero-content{position:relative;max-width:720px}.hero-eyebrow{display:inline-block;padding:.35rem .9rem;border-radius:999px;background:var(--accent-soft);color:var(--accent-bright);font-size:.85rem;font-weight:600;margin-bottom:1.25rem;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--accent-soft)}.hero h1{font-size:clamp(2.5rem,6vw,4.25rem);line-height:1.1;letter-spacing:-.03em;font-weight:800;margin-bottom:1.25rem}.hero h1 .gradient-text{background:linear-gradient(120deg,var(--accent),var(--accent-bright));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.15rem;color:var(--text-muted);max-width:560px;margin-bottom:2rem}.btn-row{display:flex;gap:1rem;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.6rem;border-radius:10px;font-weight:600;font-size:.95rem;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;cursor:pointer;border:none}.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-bright));color:#fff;box-shadow:0 4px 16px #2563eb4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px #2563eb66}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--accent-bright);transform:translateY(-2px)}.section{padding:5.5rem 0}.section-alt{background:linear-gradient(180deg,var(--bg) 0,var(--bg-alt) 5rem,var(--bg-alt) calc(100% - 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