.lesson-nav.svelte-jx2vax{background:var(--vm-ivory);border-radius:8px;padding:1.5rem;box-shadow:0 2px 4px #0000001a;height:calc(100vh - 180px);display:flex;flex-direction:column;overflow:hidden}.dark .lesson-nav.svelte-jx2vax{background:var(--vm-navy)}.back-link.svelte-jx2vax{display:inline-flex;align-items:center;gap:.5rem;color:var(--color-primary);text-decoration:none;font-weight:600;font-size:.875rem;margin-bottom:1.5rem;padding:.5rem 0;transition:opacity .2s;flex-shrink:0}.back-link.svelte-jx2vax:hover{opacity:.7}.back-link.svelte-jx2vax svg:where(.svelte-jx2vax){width:16px;height:16px}.list-container.svelte-jx2vax{flex:1;min-height:0;position:relative;border-radius:6px;background:#00000008;overflow:hidden}.dark .list-container.svelte-jx2vax{background:#0003}.lessons-list.svelte-jx2vax{position:absolute;inset:0;list-style:none;padding:.75rem;margin:0;display:flex;flex-direction:column;gap:.25rem;overflow-y:auto}.lessons-list.svelte-jx2vax::-webkit-scrollbar{width:6px}.lessons-list.svelte-jx2vax::-webkit-scrollbar-track{background:#0000000d;border-radius:3px}.dark .lessons-list.svelte-jx2vax::-webkit-scrollbar-track{background:#ffffff0d}.lessons-list.svelte-jx2vax::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:3px}.lessons-list.svelte-jx2vax::-webkit-scrollbar-thumb:hover{background:var(--color-accent)}.lesson-link.svelte-jx2vax{display:flex;align-items:flex-start;gap:.5rem;padding:.75rem 1rem;border-radius:6px;text-decoration:none;color:var(--color-text1);transition:all .2s;font-size:.9rem;line-height:1.4}.lesson-link.svelte-jx2vax:hover{background:#0000000d}.dark .lesson-link.svelte-jx2vax:hover{background:#ffffff0d}.lesson-link.active.svelte-jx2vax{background:var(--color-primary);color:var(--vm-ivory);font-weight:600}.dark .lesson-link.active.svelte-jx2vax{color:var(--vm-dark-navy)}.lesson-number.svelte-jx2vax{flex-shrink:0;font-weight:600}.lesson-title.svelte-jx2vax{flex:1}.lesson-header.svelte-14jmmgn{padding:2rem 0 2rem .5rem;max-width:100%;border-bottom:1px solid var(--color-border)}.lesson-header.svelte-14jmmgn h1:where(.svelte-14jmmgn){font-size:2rem;font-weight:700;font-family:Roboto Slab,serif;color:#1a3a52;line-height:1.3;margin:0;word-wrap:break-word;overflow-wrap:break-word}.dark .lesson-header.svelte-14jmmgn h1:where(.svelte-14jmmgn){color:var(--vm-castaway)}@media(max-width:768px){.lesson-header.svelte-14jmmgn{padding:1rem 0 1rem .5rem}.lesson-header.svelte-14jmmgn h1:where(.svelte-14jmmgn){font-size:1.5rem}}@media(max-width:640px){.lesson-header.svelte-14jmmgn{padding:.75rem 0}.lesson-header.svelte-14jmmgn h1:where(.svelte-14jmmgn){font-size:1.25rem}}.lesson-page.svelte-13rnyrn{background:#f6f6ec;min-height:calc(100vh - 80px);padding:3rem 0}.dark .lesson-page.svelte-13rnyrn{background:var(--vm-dark-navy)}.lesson-page.no-sidebar.svelte-13rnyrn{padding:1rem 0}.container.svelte-13rnyrn{max-width:1400px;margin:0 auto;padding:0 2rem}@media(max-width:640px){.container.svelte-13rnyrn{padding:0 1rem}}.lesson-layout.svelte-13rnyrn{display:grid;grid-template-columns:320px 1fr;gap:2rem;align-items:start}.lesson-layout.no-sidebar.svelte-13rnyrn{grid-template-columns:1fr;justify-items:center}.sidebar.svelte-13rnyrn{position:sticky;top:128px;align-self:start}.lesson-main.svelte-13rnyrn{min-width:0;max-width:100%;width:100%}@media(max-width:1100px){.lesson-layout.svelte-13rnyrn{grid-template-columns:260px 1fr}}@media(max-width:860px){.lesson-layout.svelte-13rnyrn{grid-template-columns:1fr}.sidebar.svelte-13rnyrn{display:none}}@media(max-width:768px){.container.svelte-13rnyrn{padding:0 1rem}}@media(max-width:480px){.container.svelte-13rnyrn{padding:0 .75rem}.lesson-page.svelte-13rnyrn{padding:.5rem 0}}.lesson-main.svelte-13rnyrn .lesson-section{margin-bottom:3rem}.lesson-main.svelte-13rnyrn p{line-height:1.8;margin-bottom:1rem;color:var(--color-text-primary)}.dark .lesson-main.svelte-13rnyrn p{color:var(--vm-castaway)}@media(max-width:480px){.lesson-main.svelte-13rnyrn .lesson-section{margin-bottom:1.5rem}.lesson-main.svelte-13rnyrn p{font-size:.9rem;line-height:1.6}}.lesson-navigation.svelte-esnjiu{display:flex;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:2rem}.nav-button.svelte-esnjiu{background:var(--vm-light-navy);color:var(--vm-ivory);padding:.875rem 2rem;border-radius:50px;text-decoration:none;font-weight:600;font-family:Lexend Deca,sans-serif;transition:all .2s}.nav-button.svelte-esnjiu:hover{background:var(--vm-navy);transform:translateY(-2px);box-shadow:0 4px 12px #0a26464d}@media(max-width:768px){.lesson-navigation.svelte-esnjiu{flex-direction:column}.nav-button.svelte-esnjiu{text-align:center}}