:root{--color-bg: #ffffff;--color-text: #111111;--color-primary: #4F46E5;--color-primary-text: #ffffff;--color-surface: #f4f4f8;--color-border: #e2e2e8;--color-answer-a: #EF4444;--color-answer-b: #3B82F6;--color-answer-c: #F59E0B;--color-answer-d: #10B981;--color-answer-e: #8B5CF6;--color-answer-f: #EC4899;--font-family: system-ui, -apple-system, sans-serif;--border-radius: 12px;--font-size-question: 2rem;--font-size-answer: 1.25rem}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);min-height:100vh;line-height:1.5}button{font-family:inherit;cursor:pointer;border:none;border-radius:var(--border-radius);padding:.6em 1.2em;font-size:1rem;transition:opacity .15s,transform .1s}button:hover:not(:disabled){opacity:.85}button:active:not(:disabled){transform:scale(.97)}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{font-family:inherit;font-size:1rem;border:1.5px solid var(--color-border);border-radius:var(--border-radius);padding:.5em .8em;background:var(--color-bg);color:var(--color-text);width:100%;outline:none;transition:border-color .15s}input:focus,textarea:focus,select:focus{border-color:var(--color-primary)}.btn-primary{background:var(--color-primary);color:var(--color-primary-text);font-weight:600}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1.5px solid var(--color-border)}.btn-danger{background:var(--color-answer-a);color:#fff;font-weight:600}.card{background:var(--color-bg);border:1.5px solid var(--color-border);border-radius:var(--border-radius);padding:1.5rem}.error-msg{color:var(--color-answer-a);font-size:.9rem;margin-top:.5rem}.tag{display:inline-block;padding:.2em .6em;border-radius:999px;font-size:.75rem;font-weight:600;background:var(--color-surface);color:var(--color-text)}