:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{margin:0}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}:root{--primary-color:#2563eb;--primary-hover:#1d4ed8;--bg-gradient:#f8fafc;--card-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--input-bg:#fff;--input-border:#e2e8f0;--shadow-lg:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f}@media (prefers-color-scheme:dark){:root{--bg-gradient:#f8fafc;--card-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--input-bg:#fff;--input-border:#e2e8f0}}.quiz-wrapper{background-color:var(--bg-gradient);justify-content:center;align-items:center;min-height:100vh;padding:20px;font-family:Inter,Microsoft JhengHei,system-ui,sans-serif;display:flex}.login-card{background:var(--card-bg);box-shadow:var(--shadow-lg);text-align:center;border:1px solid #f1f5f9;border-radius:16px;width:100%;max-width:440px;padding:40px}.quiz-title{color:var(--text-main);margin-bottom:8px;font-size:1.75rem;font-weight:700}.quiz-subtitle{color:var(--text-muted);margin-bottom:32px;font-size:.95rem}.input-group{text-align:left;margin-bottom:20px}.input-label{color:var(--text-main);margin-bottom:6px;margin-left:4px;font-size:.875rem;font-weight:600;display:block}.styled-input{background:var(--input-bg);border:1px solid var(--input-border);width:100%;color:var(--text-main);box-sizing:border-box;border-radius:8px;padding:12px 16px;font-size:1rem}.styled-input:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #2563eb1a}.primary-button{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:12px;font-size:1rem;font-weight:600;transition:background .2s}.primary-button:hover:not(:disabled){background:var(--primary-hover)}.quiz-container{background:var(--card-bg);width:100%;max-width:800px;box-shadow:var(--shadow-lg);border:1px solid #f1f5f9;border-radius:16px;margin:20px auto;padding:32px}.quiz-header{border-bottom:1px solid var(--input-border);justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;display:flex}.user-info{color:var(--text-main);font-size:1rem;font-weight:500}.timer{color:#ef4444;font-family:monospace;font-size:1.1rem;font-weight:700}.section-title{color:var(--text-main);border-left:4px solid var(--primary-color);margin:32px 0 16px;padding-left:12px;font-size:1.25rem;font-weight:700}.question-card{border-bottom:1px solid #f1f5f9;margin-bottom:10px;padding:20px}.question-text{color:var(--text-main);text-align:left;align-items:flex-start;margin-bottom:16px;font-size:1.05rem;font-weight:600;line-height:1.6;display:flex}.q-no{flex-shrink:0;min-width:28px;margin-right:8px}.q-content{flex:1}.options-grid{flex-direction:column;gap:8px;padding-left:36px;display:flex}.option-item{cursor:pointer;text-align:left;border-radius:6px;align-items:flex-start;padding:10px 12px;transition:background .2s;display:flex}.option-item:hover{background:#f8fafc}.option-item input{accent-color:var(--primary-color);margin-top:5px;margin-right:12px}.option-label{color:var(--text-main);flex:1;font-size:1rem;line-height:1.5}