:root{--bg-body: #f8fafc;--bg-surface: #ffffff;--bg-subtle: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #f8fafc;--border-light: #e2e8f0;--border-medium: #cbd5e1;--border-accent: rgba(37, 99, 235, .3);--text-main: #0f172a;--text-muted: #475569;--text-dim: #64748b;--accent-blue: #2563eb;--accent-blue-dark: #1d4ed8;--accent-emerald: #047857;--accent-emerald-light: #059669;--accent-cyan: #0891b2;--accent-indigo: #4f46e5;--accent-amber: #d97706;--gradient-primary: linear-gradient(135deg, #1e40af 0%, #2563eb 60%, #059669 100%);--gradient-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);--font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .04);--shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, .1), 0 8px 10px -6px rgba(15, 23, 42, .04);--shadow-xl: 0 20px 45px -10px rgba(15, 23, 42, .12);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--max-width: 1240px;--transition-fast: .2s ease;--transition-normal: .3s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-family:var(--font-family);background-color:var(--bg-body);color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased}body{overflow-x:hidden;min-height:100vh}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}section{padding:5.5rem 0;position:relative}h1,h2,h3,h4{color:var(--text-main);font-weight:700;line-height:1.2;letter-spacing:-.02em}h2{font-size:2.25rem;margin-bottom:1rem}p{color:var(--text-muted);font-size:1.05rem}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block}.section-tag{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .85rem;border-radius:var(--radius-full);background:#2563eb14;border:1px solid rgba(37,99,235,.2);color:var(--accent-blue-dark);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem}.section-header{text-align:center;max-width:760px;margin:0 auto 3.5rem}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1rem 0;background:#ffffffeb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-light);transition:all var(--transition-fast)}.navbar.scrolled{box-shadow:var(--shadow-md)}.nav-container{display:flex;align-items:center;justify-content:space-between}.brand-logo{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-size:1.35rem;font-weight:800;color:var(--text-main);white-space:nowrap}.brand-logo svg{width:32px;height:32px}.brand-badge{font-size:.62rem;padding:.2rem .5rem;border-radius:var(--radius-sm);background:#eff6ff;border:1px solid #bfdbfe;color:#1d4ed8;text-transform:uppercase;font-weight:700;line-height:1}.nav-links{display:flex;align-items:center;gap:1.75rem;list-style:none}.nav-links a{color:var(--text-muted);text-decoration:none;font-weight:600;font-size:.95rem;transition:color var(--transition-fast)}.nav-links a:hover{color:var(--accent-blue)}.nav-actions{display:flex;align-items:center;gap:1rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;padding:.75rem 1.6rem;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;cursor:pointer;text-decoration:none;transition:all var(--transition-fast);border:none}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 14px #2563eb4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #2563eb73}.btn-secondary{background:var(--bg-surface);border:1px solid var(--border-medium);color:var(--text-main);box-shadow:var(--shadow-sm)}.btn-secondary:hover{border-color:var(--accent-blue);background:#eff6ff;color:var(--accent-blue-dark)}