:root{--bg: #0a0a0f;--bg-card: rgba(255, 255, 255, .03);--bg-card-hover: rgba(255, 255, 255, .06);--text: #f5f5f7;--text-muted: #86868b;--accent: #6366f1;--accent-light: #818cf8;--accent-glow: rgba(99, 102, 241, .4);--border: rgba(255, 255, 255, .1);--success: #10b981;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: "Space Grotesk", var(--font-sans);--container: min(1200px, 90vw);--section-gap: 120px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.app{min-height:100vh;display:flex;flex-direction:column}.header{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:20px calc((100vw - var(--container)) / 2);background:#0a0a0fcc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}.logo{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:1.25rem;font-weight:600;letter-spacing:-.02em}.logo-icon{color:var(--accent);font-size:1.5rem}.nav{display:flex;align-items:center;gap:24px}.nav a{font-size:.9rem;color:var(--text-muted);transition:color .2s}.nav a:hover{color:var(--text)}.lang-switch{padding:6px 12px;border:1px solid var(--border);border-radius:6px;font-size:.85rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:12px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 0 20px var(--accent-glow)}.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 4px 30px var(--accent-glow)}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--text-muted)}.btn-large{padding:16px 32px;font-size:1.1rem}.btn-arrow{transition:transform .2s}.btn:hover .btn-arrow{transform:translate(4px)}.btn:disabled{opacity:.5;cursor:not-allowed}.hero{padding:100px calc((100vw - 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