*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: #eef2ff;--secondary: #ec4899;--bg: #ffffff;--bg-card: #f8fafc;--bg-input: #f1f5f9;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--success: #22c55e;--danger: #ef4444;--radius: 16px;--radius-sm: 10px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 16px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.1)}html,body{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}#app{min-height:100vh;display:flex;flex-direction:column}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.input{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:15px;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}.header{display:flex;align-items:center;justify-content:space-between;padding:14px 32px;background:var(--bg);position:sticky;top:0;z-index:100;transition:background .3s,box-shadow .3s,backdrop-filter .3s;border-bottom:1px solid transparent}.header-center-nav{display:flex;gap:32px;align-items:center}.header-nav{display:flex;gap:16px;align-items:center}[id]{scroll-margin-top:64px}@media(max-width:768px){.container{padding:0 16px}.btn{padding:10px 18px;font-size:14px}.header{padding:12px 16px}.header-center-nav{display:none}}