@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";
@import "https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.css";
@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2c55a0e60120577a-s.0bjc5tiuqdqro.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/9c72aa0f40e4eef8-s.p.0m6w47a4e5dy9.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/ad66f9afd8947f86-s.11u06r12fd6v_.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5476f68d60460930-s.0wxq9webf.ew4.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2bbe8d2671613f1f-s.067x_6k0k23tk.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/1bffadaabf893a1e-s.16ipb6fqu393i.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/83afe278b6a6bb3c-s.p.0q-301v4kxxnr.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Fallback;src:local(Arial);ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.0%;size-adjust:107.12%}.inter_9897a435-module__vEUYoW__className{font-family:Inter,Inter Fallback;font-style:normal}
:root{--red-50:#fef2f2;--red-100:#fee2e2;--red-500:#ef4444;--red-600:#dc2626;--red-700:#b91c1c;--red-800:#991b1b;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--blue-500:#3b82f6;--blue-600:#2563eb;--green-500:#22c55e;--green-600:#16a34a;--yellow-400:#facc15;--primary:var(--red-600);--primary-hover:var(--red-700);--primary-light:var(--red-50);--text-primary:var(--gray-900);--text-secondary:var(--gray-500);--text-muted:var(--gray-400);--bg-page:#fff;--bg-surface:var(--gray-50);--bg-elevated:#fff;--border:var(--gray-200);--border-focus:var(--red-600);--q-unsaved:var(--gray-300);--q-saved:var(--red-600);--q-current:var(--blue-500);--q-correct:var(--green-500);--q-wrong:var(--red-600);--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:20px;--shadow-sm:0 1px 3px #00000014;--shadow:0 4px 16px #00000014;--shadow-lg:0 8px 32px #0000001f;--shadow-xl:0 16px 48px #00000026}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{color:var(--text-primary);background:var(--bg-page);-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}.nmt-serif,.nmt-test-container,.nmt-test-container *,.nmt-serif *,.question-content *,.option-label *{font-family:Inter,sans-serif!important}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}img{max-width:100%;display:block}.container{max-width:1200px;margin:0 auto;padding:0 24px}@media (max-width:768px){.container{padding:0 16px}}@media (max-width:640px){html{font-size:14px}.btn{padding:10px 20px}}.btn{border-radius:var(--radius);white-space:nowrap;border:2px solid #0000;align-items:center;gap:8px;padding:12px 24px;font-size:.95rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 16px #dc262659}.btn-outline{color:var(--text-primary);border-color:var(--border);background:0 0}.btn-outline:hover{border-color:var(--gray-400);background:var(--gray-50);transform:translateY(-1px)}.btn-ghost{color:var(--text-secondary);background:0 0;border-color:#0000;padding:8px 16px}.btn-ghost:hover{background:var(--gray-100);color:var(--text-primary)}.btn-sm{padding:8px 16px;font-size:.875rem}.btn-lg{padding:16px 32px;font-size:1.05rem}.input{border:2px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text-primary);background:#fff;outline:none;padding:12px 16px;font-size:.95rem;transition:border-color .2s}.input:focus{border-color:var(--primary)}.input::placeholder{color:var(--text-muted)}.label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:.875rem;font-weight:600;display:block}.form-group{margin-bottom:20px}.card{border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);background:#fff;padding:24px}.badge{text-transform:uppercase;letter-spacing:.05em;border-radius:999px;align-items:center;padding:4px 10px;font-size:.75rem;font-weight:600;display:inline-flex}.badge-red{background:var(--red-100);color:var(--red-700)}.badge-green{color:var(--green-600);background:#dcfce7}.badge-gray{background:var(--gray-100);color:var(--gray-600)}.badge-blue{color:var(--blue-600);background:#dbeafe}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes timerPulse{0%,to{box-shadow:0 0 #dc262666}50%{box-shadow:0 0 0 8px #dc262600}}.fade-in{animation:.3s forwards fadeIn}.slide-in-right{animation:.3s forwards slideInRight}.slant-top{clip-path:polygon(0 80px,100% 0,100% 100%,0 100%);z-index:2;margin-top:-80px;position:relative}.slant-bottom{clip-path:polygon(0 0,100% 0,100% calc(100% - 80px),0 100%);z-index:1;margin-bottom:-80px;position:relative}.slant-both{clip-path:polygon(0 80px,100% 0,100% calc(100% - 80px),0 100%);z-index:2;margin-top:-80px;margin-bottom:-80px;position:relative}.bg-slant-gray{background:#f8fafc!important}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--gray-100)}::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--gray-400)}.q-img{border:1px solid var(--gray-200);object-fit:contain;background:#fff;border-radius:6px;width:auto;max-width:100%;max-height:320px;margin:12px 0;display:block}.q-img--full{object-fit:contain;border:1px solid var(--gray-300);width:100%;max-height:600px;box-shadow:var(--shadow-sm)}.q-img--inline{vertical-align:middle;background:0 0;border:none;max-height:48px;margin:0 4px;display:inline-block}.option-label .q-img{max-height:80px;margin:6px 0 0}