.breadcrumb-section[data-astro-cid-ik2ojafi]{background:#38bdf808;border-bottom:1px solid var(--border);padding:1rem 0}.breadcrumb[data-astro-cid-ik2ojafi]{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;font-size:var(--font-size-sm)}.breadcrumb[data-astro-cid-ik2ojafi] a[data-astro-cid-ik2ojafi]{color:var(--cyan);text-decoration:none;transition:color var(--transition)}.breadcrumb[data-astro-cid-ik2ojafi] a[data-astro-cid-ik2ojafi]:hover{color:var(--cyan3)}.breadcrumb[data-astro-cid-ik2ojafi] span[data-astro-cid-ik2ojafi]{color:var(--gray)}.breadcrumb[data-astro-cid-ik2ojafi]>span[data-astro-cid-ik2ojafi]:last-child{color:var(--white);font-weight:500}.lesson-header[data-astro-cid-ik2ojafi]{background:linear-gradient(135deg,var(--card) 0%,var(--card2) 100%);border-bottom:1px solid var(--border);padding:2.5rem 0}.header-content[data-astro-cid-ik2ojafi]{display:flex;justify-content:space-between;align-items:flex-start;gap:3rem}.header-main[data-astro-cid-ik2ojafi]{flex:1}.lesson-header[data-astro-cid-ik2ojafi] h1[data-astro-cid-ik2ojafi]{font-size:var(--font-size-4xl);margin:1rem 0 1.5rem}.meta-info[data-astro-cid-ik2ojafi]{display:flex;gap:2rem;flex-wrap:wrap;align-items:center}.meta-item[data-astro-cid-ik2ojafi]{display:flex;flex-direction:column;gap:.25rem}.meta-label[data-astro-cid-ik2ojafi]{font-size:var(--font-size-xs);color:var(--gray);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.meta-value[data-astro-cid-ik2ojafi]{font-size:var(--font-size-lg);color:var(--white);font-weight:600}.lesson-container[data-astro-cid-ik2ojafi]{padding:3rem 0}.lesson-layout[data-astro-cid-ik2ojafi]{display:grid;grid-template-columns:280px 1fr;gap:3rem}.lesson-sidebar[data-astro-cid-ik2ojafi]{position:sticky;top:calc(var(--nav-h) + 2rem);height:fit-content;background:linear-gradient(135deg,#16203180,#1a264080);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}.sidebar-header[data-astro-cid-ik2ojafi]{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.sidebar-title[data-astro-cid-ik2ojafi]{font-size:var(--font-size-lg);color:var(--white);margin:0;font-weight:600}.nav-label[data-astro-cid-ik2ojafi]{font-size:var(--font-size-xs);color:var(--gray);text-transform:uppercase;letter-spacing:.05em;font-weight:600;margin-bottom:1rem}.lessons-list[data-astro-cid-ik2ojafi]{list-style:none;display:flex;flex-direction:column;gap:.5rem}.lessons-list[data-astro-cid-ik2ojafi] li[data-astro-cid-ik2ojafi]{border-radius:var(--radius);transition:all var(--transition)}.lessons-list[data-astro-cid-ik2ojafi] li[data-astro-cid-ik2ojafi].active{background:#38bdf81a}.lessons-list[data-astro-cid-ik2ojafi] a[data-astro-cid-ik2ojafi]{display:flex;align-items:center;gap:.75rem;padding:.75rem;color:var(--gray);text-decoration:none;border-radius:calc(var(--radius) - 4px);transition:all var(--transition);position:relative}.lessons-list[data-astro-cid-ik2ojafi] li[data-astro-cid-ik2ojafi].active a[data-astro-cid-ik2ojafi]{color:var(--cyan);font-weight:500}.lessons-list[data-astro-cid-ik2ojafi] a[data-astro-cid-ik2ojafi]:hover{color:var(--cyan);background:#38bdf81a}.lesson-number[data-astro-cid-ik2ojafi]{display:flex;align-items:center;justify-content:center;width:24px;height:24px;font-size:var(--font-size-xs);font-weight:700;background:#38bdf826;border:1px solid var(--border);border-radius:4px;flex-shrink:0}.lessons-list[data-astro-cid-ik2ojafi] li[data-astro-cid-ik2ojafi].active .lesson-number[data-astro-cid-ik2ojafi]{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}.lesson-name[data-astro-cid-ik2ojafi]{flex:1;font-size:var(--font-size-sm)}.current-indicator[data-astro-cid-ik2ojafi]{color:var(--cyan);font-size:var(--font-size-lg);margin-left:auto}.sidebar-audio[data-astro-cid-ik2ojafi]{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}.lesson-content[data-astro-cid-ik2ojafi]{min-width:0}.prose[data-astro-cid-ik2ojafi]{color:var(--gray);line-height:var(--line-height-relaxed)}.prose[data-astro-cid-ik2ojafi] :is(h1,h2,h3,h4,h5,h6){color:var(--white);margin-top:2.5em;margin-bottom:.75em;font-weight:700;line-height:var(--line-height-tight)}.prose[data-astro-cid-ik2ojafi] :is(h1,h2,h3,h4,h5,h6):first-child{margin-top:0}.prose[data-astro-cid-ik2ojafi] h1{font-size:var(--font-size-4xl)}.prose[data-astro-cid-ik2ojafi] h2{font-size:var(--font-size-3xl);padding-bottom:.75rem;border-bottom:1px solid var(--border)}.prose[data-astro-cid-ik2ojafi] h3{font-size:var(--font-size-2xl)}.prose[data-astro-cid-ik2ojafi] h4{font-size:var(--font-size-xl)}.prose[data-astro-cid-ik2ojafi] h5{font-size:var(--font-size-lg)}.prose[data-astro-cid-ik2ojafi] h6{font-size:var(--font-size-base)}.prose[data-astro-cid-ik2ojafi] p{margin-bottom:1rem;color:var(--gray);line-height:var(--line-height-relaxed)}.prose[data-astro-cid-ik2ojafi] a{color:var(--cyan);text-decoration:none;transition:color var(--transition);border-bottom:1px solid transparent}.prose[data-astro-cid-ik2ojafi] a:hover{color:var(--cyan3);border-bottom-color:var(--cyan3)}.prose[data-astro-cid-ik2ojafi] code{background:var(--card2);color:var(--cyan3);padding:.25rem .5rem;border-radius:4px;font-family:Courier New,monospace;font-size:.9em}.prose[data-astro-cid-ik2ojafi] pre{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;overflow-x:auto;margin:2rem 0 2.5rem}.prose[data-astro-cid-ik2ojafi] pre code{background:none;color:var(--cyan3);padding:0;border-radius:0}.prose[data-astro-cid-ik2ojafi] :is(ul,ol){margin:1.25rem 0;padding-left:2.5rem;list-style-position:outside}.prose[data-astro-cid-ik2ojafi] li{margin-bottom:.5rem;color:var(--gray);padding-left:.25rem}.prose[data-astro-cid-ik2ojafi] ul li{list-style-type:disc;color:var(--gray)}.prose[data-astro-cid-ik2ojafi] ul li::marker{color:var(--cyan)}.prose[data-astro-cid-ik2ojafi] ol li{list-style-type:decimal}.prose[data-astro-cid-ik2ojafi] ol li::marker{color:var(--cyan);font-weight:600}.prose[data-astro-cid-ik2ojafi] blockquote{border-left:4px solid var(--cyan);margin:1.5rem 0;color:var(--gray);background:#38bdf80d;padding:1rem 1rem 1rem 1.5rem;border-radius:4px;font-style:italic}.prose[data-astro-cid-ik2ojafi] table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:var(--font-size-sm)}.prose[data-astro-cid-ik2ojafi] thead{background:var(--card);border-bottom:2px solid var(--border)}.prose[data-astro-cid-ik2ojafi] th{padding:1rem;text-align:left;color:var(--white);font-weight:600}.prose[data-astro-cid-ik2ojafi] td{padding:1rem;border-bottom:1px solid var(--border);color:var(--gray)}.prose[data-astro-cid-ik2ojafi] tbody tr:nth-child(odd){background:#38bdf808}.prose[data-astro-cid-ik2ojafi] tbody tr:hover{background:#38bdf814}.prose[data-astro-cid-ik2ojafi] img{max-width:100%;height:auto;border-radius:var(--radius);margin:1.5rem 0}.prose[data-astro-cid-ik2ojafi] hr{border:none;border-top:1px solid var(--border);margin:2rem 0}.prose[data-astro-cid-ik2ojafi] strong{color:var(--white);font-weight:600}.lesson-navigation[data-astro-cid-ik2ojafi]{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-top:4rem;padding-top:2rem;border-top:2px solid var(--border)}.nav-button[data-astro-cid-ik2ojafi]{display:flex;align-items:center;gap:1rem;padding:1.5rem;background:linear-gradient(135deg,#16203180,#1a264080);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;transition:all var(--transition);color:var(--white)}.nav-button[data-astro-cid-ik2ojafi]:hover{border-color:var(--cyan);background:linear-gradient(135deg,#162031cc,#1a2640cc);transform:translateY(-2px)}.nav-arrow[data-astro-cid-ik2ojafi]{font-size:var(--font-size-xl);color:var(--cyan);flex-shrink:0}.nav-text[data-astro-cid-ik2ojafi]{display:flex;flex-direction:column;gap:.25rem}.nav-label[data-astro-cid-ik2ojafi]{font-size:var(--font-size-xs);color:var(--gray);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.nav-title[data-astro-cid-ik2ojafi]{font-size:var(--font-size-base);color:var(--white);font-weight:500}.next-button[data-astro-cid-ik2ojafi]{flex-direction:row-reverse}@media(max-width:1024px){.lesson-layout[data-astro-cid-ik2ojafi]{grid-template-columns:1fr}.lesson-sidebar[data-astro-cid-ik2ojafi]{position:static}}@media(max-width:768px){.lesson-header[data-astro-cid-ik2ojafi] h1[data-astro-cid-ik2ojafi]{font-size:var(--font-size-3xl)}.lesson-layout[data-astro-cid-ik2ojafi]{gap:2rem}.lesson-navigation[data-astro-cid-ik2ojafi]{grid-template-columns:1fr;gap:1rem}.nav-button[data-astro-cid-ik2ojafi]{padding:1rem}.sidebar-title[data-astro-cid-ik2ojafi]{font-size:var(--font-size-base)}.prose[data-astro-cid-ik2ojafi] :is(h2,h3){margin-top:1.5rem}}