*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #fafafa;--bg-secondary: #f5f5f5;--bg-card: #ffffff;--text-primary: #171717;--text-secondary: #525252;--text-muted: #a3a3a3;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: #eff6ff;--border: #e5e5e5;--border-subtle: #f0f0f0;--success: #16a34a;--error: #dc2626;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px}html{font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;letter-spacing:-.02em}h1{font-size:3.5rem}h2{font-size:2rem}h3{font-size:1.5rem}p{line-height:1.6}a{color:inherit;text-decoration:none}code,pre{font-family:var(--font-mono)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.875rem;font-weight:600;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all .15s ease;text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--text-primary);color:#fff;border-color:var(--text-primary)}.btn-primary:hover:not(:disabled){background:#404040;border-color:#404040}.btn-secondary{background:#fff;color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg-secondary);border-color:var(--text-muted)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--bg-secondary);color:var(--text-primary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm)}.card-hover:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);transition:all .2s ease}.input{width:100%;padding:.625rem .875rem;font-size:.875rem;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff;color:var(--text-primary);transition:border-color .15s ease,box-shadow .15s ease}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.input::placeholder{color:var(--text-muted)}.label{display:block;font-size:.8125rem;font-weight:600;color:var(--text-secondary);margin-bottom:.375rem}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent)}.text-center{text-align:center}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:.75rem}.mb-4{margin-bottom:1rem}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-in{animation:fadeInUp .5s ease forwards;opacity:0}.delay-1{animation-delay:.1s}.delay-2{animation-delay:.2s}.delay-3{animation-delay:.3s}.divider{display:flex;align-items:center;gap:1rem;margin:1.5rem 0}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.divider span{color:var(--text-muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.05em}