@charset "UTF-8";/*!
* Bootstrap  v5.3.8 (https://getbootstrap.com/)
* Copyright 2011-2025 The Bootstrap Authors
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
*/:root{--bs-blue:#0d6efd;--bs-indigo:#6610f2;--bs-purple:#6f42c1;--bs-pink:#d63384;--bs-red:#dc3545;--bs-orange:#fd7e14;--bs-yellow:#ffc107;--bs-green:#198754;--bs-teal:#20c997;--bs-cyan:#0dcaf0;--bs-black:#000;--bs-white:#fff;--bs-gray:#6c757d;--bs-gray-dark:#343a40;--bs-gray-100:#f8f9fa;--bs-gray-200:#e9ecef;--bs-gray-300:#dee2e6;--bs-gray-400:#ced4da;--bs-gray-500:#adb5bd;--bs-gray-600:#6c757d;--bs-gray-700:#495057;--bs-gray-800:#343a40;--bs-gray-900:#212529;--bs-primary:#0d6efd;--bs-secondary:#6c757d;--bs-success:#198754;--bs-info:#0dcaf0;--bs-warning:#ffc107;--bs-danger:#dc3545;--bs-light:#f8f9fa;--bs-dark:#212529;--bs-primary-rgb:13,110,253;--bs-secondary-rgb:108,117,125;--bs-success-rgb:25,135,84;--bs-info-rgb:13,202,240;--bs-warning-rgb:255,193,7;--bs-danger-rgb:220,53,69;--bs-light-rgb:248,249,250;--bs-dark-rgb:33,37,41;--bs-primary-text-emphasis:#052c65;--bs-secondary-text-emphasis:#2b2f32;--bs-success-text-emphasis:#0a3622;--bs-info-text-emphasis:#055160;--bs-warning-text-emphasis:#664d03;--bs-danger-text-emphasis:#58151c;--bs-light-text-emphasis:#495057;--bs-dark-text-emphasis:#495057;--bs-primary-bg-subtle:#cfe2ff;--bs-secondary-bg-subtle:#e2e3e5;--bs-success-bg-subtle:#d1e7dd;--bs-info-bg-subtle:#cff4fc;--bs-warning-bg-subtle:#fff3cd;--bs-danger-bg-subtle:#f8d7da;--bs-light-bg-subtle:#fcfcfd;--bs-dark-bg-subtle:#ced4da;--bs-primary-border-subtle:#9ec5fe;--bs-secondary-border-subtle:#c4c8cb;--bs-success-border-subtle:#a3cfbb;--bs-info-border-subtle:#9eeaf9;--bs-warning-border-subtle:#ffe69c;--bs-danger-border-subtle:#f1aeb5;--bs-light-border-subtle:#e9ecef;--bs-dark-border-subtle:#adb5bd;--bs-white-rgb:255,255,255;--bs-black-rgb:0,0,0;--bs-font-sans-serif:system-ui,-apple-system,"Segoe 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}:root{--bs-carousel-indicator-active-bg:#fff;--bs-carousel-caption-color:#fff;--bs-carousel-control-icon-filter: }.spinner-border,.spinner-grow{display:inline-block;flex-shrink:0;width:var(--bs-spinner-width);height:var(--bs-spinner-height);vertical-align:var(--bs-spinner-vertical-align);border-radius:50%;animation:var(--bs-spinner-animation-speed) linear infinite var(--bs-spinner-animation-name)}@keyframes spinner-border{to{transform:rotate(360deg)}}.spinner-border{--bs-spinner-width:2rem;--bs-spinner-height:2rem;--bs-spinner-vertical-align:-.125em;--bs-spinner-border-width:.25em;--bs-spinner-animation-speed:.75s;--bs-spinner-animation-name:spinner-border;border:var(--bs-spinner-border-width) solid currentcolor;border-right-color:transparent}.spinner-border-sm{--bs-spinner-width:1rem;--bs-spinner-height:1rem;--bs-spinner-border-width:.2em}@keyframes 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#0f766e}@media(max-width:768px){.feedback-summary-bar,.feedback-form-row{grid-template-columns:1fr}}.nav-short{display:none}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.footer-links{display:flex;flex-wrap:wrap;gap:6px 22px}.footer-brand{color:#92a0b4}@media(max-width:760px){.topbar.guest-topbar{display:none}.theme-toggle{top:22px;right:16px;width:40px;height:40px;min-height:40px;padding:0;border-radius:50%;font-size:17px;display:grid;place-items:center}.theme-toggle .theme-label{display:none}.theme-toggle.exam-toggle{top:6px;right:8px;width:30px;height:30px;min-height:30px;font-size:14px}.sidebar{padding:16px 20px}.sidebar nav{position:fixed;left:0;right:0;bottom:0;z-index:1050;margin:0;gap:0;flex-direction:row;justify-content:space-around;overflow-x:auto;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 18px #14233b14;padding:6px 4px calc(6px + env(safe-area-inset-bottom))}.sidebar nav a{flex:1 0 64px;flex-direction:column;justify-content:center;gap:3px;padding:6px 2px;font-size:.68rem;border-radius:10px;min-height:52px;text-align:center}.sidebar nav a svg{width:21px;height:21px}.sidebar nav a.active{background:#edf3ff}.nav-full{display:none}.nav-short{display:inline}.app-shell:not(.exam-shell) .workspace{padding-bottom:calc(72px + env(safe-area-inset-bottom))}.site-footer{flex-direction:column;align-items:flex-start;gap:10px;font-size:.78rem}.footer-links{display:grid;grid-template-columns:repeat(3,auto);gap:10px 22px}}@media(max-width:760px){[data-theme=dark] .sidebar nav{background:#18212d;box-shadow:0 -4px 18px #0006}[data-theme=dark] .sidebar nav a.active{background:#22314a}}.breadcrumb-link{flex-wrap:wrap;row-gap:4px}.breadcrumb-link a{color:inherit}.breadcrumb-link a:hover{color:var(--blue)}.exam-type-card.oppe-card{background:linear-gradient(135deg,#173452,#285fd8)}.exam-type-card.oppe-card:hover{background:linear-gradient(135deg,#1d4066,#2f6ae6)}@media(min-width:761px)and (max-width:1099px){.exam-type-cards.oppe-home-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}.native-calculator{height:600px;max-width:calc(100vw - 16px);min-height:0;min-width:0;overflow:hidden}.native-calculator .calculator-body{flex:1;min-height:0;overflow:auto;padding-bottom:30px}.native-calculator .floating-tool-header{flex-shrink:0;touch-action:none}.calculator-resize{position:absolute;right:0;bottom:0;width:30px;height:30px;border:1px solid var(--line);border-radius:6px 0 0;background:var(--panel,#fff);color:var(--text,#172943);cursor:nwse-resize;touch-action:none;z-index:2}.calculator-resize:focus-visible{outline:2px solid #285fd8;outline-offset:-3px}.native-calculator{container-type:inline-size}@container (max-width:500px){.native-calculator .calc-keys{grid-template-columns:repeat(5,minmax(0,1fr))}}.native-calculator{display:flex;flex-direction:column;box-sizing:border-box}.pyq-card,.solution-card{position:relative}.pyq-card.panel:has(.solution-badge),.solution-card:has(.solution-badge){padding-top:36px}.solution-badge{position:absolute;right:10px;top:8px;background:#dcfce7;color:#14532d;border:1px solid #86efac;border-radius:6px;padding:3px 7px;font-size:10px;font-weight:650;line-height:1.3;white-space:nowrap}.solution-badge.complete{background:#15803d;color:#fff;border-color:#15803d}[data-theme=dark] .solution-badge{background:#bbf7d0;color:#14532d;border-color:#86efac}[data-theme=dark] .solution-badge.complete{background:#166534;color:#f0fdf4;border-color:#22c55e}@media(max-width:480px){.pyq-card.panel:has(.solution-badge){padding-top:32px}.solution-badge{right:8px;top:7px;font-size:9px;padding:3px 5px}}.loading-percentage[data-v-39cc8ed7]{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:18px 0 8px}.loading-percentage strong[data-v-39cc8ed7]{font-size:1.25rem}progress[data-v-39cc8ed7]{width:100%;height:12px;accent-color:#2f63df}