:root{--background: #ffffff;--surface: #ffffff;--text: #1a1a1a;--text-secondary: #666666;--border: #e5e5e5;--hover: #f5f5f5;--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #eff6ff;--success: #16a34a;--error: #dc2626;--warning: #f59e0b;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .15)}[data-theme=dark]{--background: #0a0a0a;--surface: #171717;--text: #f5f5f5;--text-secondary: #a3a3a3;--border: #2a2a2a;--hover: #262626;--primary-light: #1e3a5f}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--background);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}img{max-width:100%;height:auto}input,textarea,select{font-family:inherit;font-size:inherit}.container{max-width:1280px;margin:0 auto;padding:0 24px}.page-header{padding:48px 0 32px;text-align:center}.page-header h1{font-size:2.5rem;font-weight:700;margin-bottom:8px}.page-header p{font-size:1.125rem;color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-md);font-weight:500;text-decoration:none;border:none;cursor:pointer;transition:all .2s}.btn.btn-primary{background:var(--primary);color:#fff}.btn.btn-primary:hover{background:var(--primary-dark)}.btn.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn.btn-secondary:hover{background:var(--hover)}.form-group{margin-bottom:20px}.form-group label{display:block;font-weight:500;margin-bottom:8px;color:var(--text)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);color:var(--text);transition:border-color .2s,box-shadow .2s}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.form-group input::placeholder,.form-group textarea::placeholder,.form-group select::placeholder{color:var(--text-secondary)}.form-group .error{color:var(--error);font-size:.875rem;margin-top:4px}.alert{padding:12px 16px;border-radius:var(--radius-md);margin-bottom:20px;font-size:.875rem}.alert.alert-error{background:#fef2f2;color:var(--error);border:1px solid #fecaca}.alert.alert-success{background:#f0fdf4;color:var(--success);border:1px solid #bbf7d0}.loading{opacity:.7;pointer-events:none}