*{box-sizing:border-box}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-bg-primary: #ffffff;--color-bg-secondary: #f3f4f6;--color-bg-tertiary: #e5e7eb;--color-text-primary: #111827;--color-text-secondary: #6b7280;--color-text-on-primary: #ffffff;--color-border: #d1d5db;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--color-bg-secondary);color:var(--color-text-primary);line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:var(--color-bg-primary);border-radius:.5rem;box-shadow:0 1px 3px #0000001a;padding:1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:.375rem;font-weight:500;transition:background-color .15s,border-color .15s}.btn-primary{background-color:var(--color-primary);color:var(--color-text-on-primary);border:none}.btn-primary:hover{background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-bg-primary);color:var(--color-text-primary);border:1px solid var(--color-border)}.btn-secondary:hover{background-color:var(--color-bg-secondary)}