.categorized-navigation .course-sidebar{width:232px;padding:28px 16px 20px;overflow-y:auto;overscroll-behavior:contain}.categorized-navigation .workspace{margin-left:232px}.course-sidebar .brand{padding-left:8px;font-size:39px}.navigation-tagline{font-size:10px;color:var(--muted);margin:16px 8px 25px}.course-navigation{display:grid;gap:6px}.course-sidebar .course-navigation{margin:0;gap:6px}.course-navigation a{display:flex;align-items:center;gap:12px;padding:10px 12px;min-height:44px;border-radius:8px;font-size:13px;color:#52664b;font-weight:500}.course-navigation a:hover{background:#e7ecdf}.course-navigation a[aria-current=page]{background:#dfe8d6;color:#244b39;font-weight:650;box-shadow:inset 3px 0 #496b43}.navigation-caption{font-size:10px;font-weight:650;letter-spacing:1.7px;color:#74836a;margin:24px 12px 8px}.course-category{border:1px solid transparent;border-radius:11px}.course-category.is-current{border-color:#d7dfce;background:#f9faf5}.course-category summary{display:flex;align-items:center;gap:10px;cursor:pointer;list-style:none;min-height:50px;padding:10px;font-size:15px;font-weight:650}.course-category summary::-webkit-details-marker{display:none}.subject-symbol{display:grid;place-items:center;flex-shrink:0;width:30px;height:30px;border-radius:8px;font:17px Georgia,serif;background:#e4ebdb;color:#33553d}.course-category[data-category=algebra] .subject-symbol{background:#efe5cb;color:#79632e}.category-chevron{margin-left:auto;font-size:18px;transition:transform .15s}.course-category[open] .category-chevron{transform:rotate(180deg)}.category-links{padding:0 6px 8px 16px}.course-sidebar .category-links a,.category-links a{font-size:12px;padding:9px 10px;min-height:42px;border-radius:7px;gap:0}.course-category summary:focus-visible{outline:3px solid #b28931;outline-offset:2px}.navigation-footnote{font:italic 13px/1.8 Georgia,serif;color:#748067;padding:24px 10px 0;margin-top:auto}.topbar .course-location{display:flex;align-items:center;gap:12px;min-width:0;font-size:12px;letter-spacing:0;color:#6a7963}.course-location strong{font-weight:650;color:#2c503d}.course-home-link{white-space:nowrap}.course-home-link:hover{text-decoration:underline}.course-location [data-section-label]{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-menu-button{display:none;align-items:center;gap:8px;border:1px solid #cbd6c0;border-radius:8px;min-height:42px;padding:8px 12px;background:#fff;color:#31533c;font-size:12px;white-space:nowrap}.course-drawer{position:fixed;inset:0 auto 0 0;margin:0;width:min(88vw,330px);max-width:none;height:100dvh;max-height:100dvh;border:0;border-right:1px solid #d3dccb;border-radius:0;padding:22px 18px;background:#f5f7ef;overflow:auto}.drawer-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:22px}.drawer-heading h2{font:26px Georgia,serif}.course-drawer .category-links a span{display:block}.course-drawer .course-navigation{margin:0}.course-library-intro{padding:22px 0 30px;max-width:750px}.course-library-intro h1{font:44px/1.16 Georgia,serif;margin:14px 0}.course-library-intro p{font-size:16px;line-height:1.8;color:var(--muted);max-width:620px}.subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.subject-card{border:1px solid var(--border);border-radius:18px;background:#fff;overflow:hidden;min-width:0}.subject-art{height:155px;display:flex;align-items:center;justify-content:space-between;padding:26px;background:#274d40;color:#f3e7b8}.subject-art.algebra{background:#eae5d4;color:#5d6243}.subject-art>span{font-size:10px;letter-spacing:1.5px;text-transform:uppercase}.subject-art code{font:26px/1.5 Consolas,monospace}.subject-art.algebra code{font:38px Georgia,serif}.subject-body{padding:26px}.subject-body h2{font:32px Georgia,serif;margin-bottom:12px}.subject-body p{font-size:14px;line-height:1.8;color:var(--muted)}.subject-facts{display:flex;flex-wrap:wrap;gap:9px 18px;font-size:11px;color:#667552;margin:20px 0}.subject-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:22px}.subject-actions .text-button{font-size:12px}.library-help{margin-top:28px;padding:22px 26px;background:#edf1e4;border:1px solid #dde4d3;border-radius:14px}.library-help h2{font-size:18px;margin-bottom:8px}.library-help p{font-size:13px;margin:0;color:var(--muted)}@media(max-width:1100px){.course-location [data-section-label]{display:none}.subject-art{padding:22px}.subject-art code{font-size:22px}}@media(max-width:960px){.categorized-navigation .course-sidebar{display:none}.categorized-navigation .workspace{margin-left:0;padding:0 24px}.course-menu-button{display:inline-flex}.course-home-link{display:none}.categorized-navigation .toast{left:50%}.course-library-intro h1{font-size:38px}}@media(max-width:600px){.categorized-navigation .workspace{padding:0 16px 12px}.categorized-navigation .topbar{height:72px}.topbar .course-location{gap:9px;font-size:12px}.course-menu-button{padding:8px 10px}.subject-grid{grid-template-columns:1fr}.course-library-intro{padding:8px 0 24px}.course-library-intro h1{font-size:33px}.course-library-intro p{font-size:14px}.subject-art{height:120px}.subject-body{padding:22px}.subject-art code{font-size:23px}.categorized-navigation .toast{bottom:18px}.navigation-footnote{display:none}}
@media(max-width:350px){.subject-art{flex-direction:column;align-items:flex-start;justify-content:center;gap:10px}}

.ai-course-card{grid-column:1/-1}.ai-course-card .subject-art{background:#e7ece3;color:#274d40}.ai-course-card .subject-art code{font-size:clamp(1.1rem,3vw,1.9rem)}
.navigation-section{border-bottom:1px solid #dce2d5;padding:4px 0 12px}.navigation-section>summary{display:flex;justify-content:space-between;align-items:center;min-height:48px;padding:10px 12px;cursor:pointer;font-size:16px;font-weight:650;list-style:none;border-radius:8px}.navigation-section>summary::-webkit-details-marker{display:none}.navigation-section>summary:hover{background:#e7ecdf}.navigation-section[open]>summary>span{transform:rotate(180deg)}.navigation-section>summary:focus-visible,.interview-role>summary:focus-visible{outline:3px solid #b28931;outline-offset:2px}.interview-role{margin:4px 0;border:1px solid transparent;border-radius:10px}.interview-role>summary{min-height:48px;padding:10px 12px;cursor:pointer;font-size:14px;font-weight:600}.interview-role.is-current{border-color:#d7dfce;background:#f9faf5}