.sidebar[data-astro-cid-aeb3ijaz]{position:sticky;top:var(--header-h);height:calc(100vh - var(--header-h));width:var(--sidebar-w);flex:none;overflow-y:auto;border-right:1px solid var(--border);background:var(--bg-elev);padding:1rem .7rem 2rem;font-size:.9rem}.sb-head[data-astro-cid-aeb3ijaz]{padding:0 .5rem .9rem;border-bottom:1px solid var(--border);margin-bottom:.6rem}.sb-course[data-astro-cid-aeb3ijaz]{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.05rem;color:var(--fg)}.sb-dot[data-astro-cid-aeb3ijaz]{width:10px;height:10px;border-radius:3px}.sb-progress[data-astro-cid-aeb3ijaz]{display:flex;align-items:center;gap:.6rem;margin-top:.6rem;font-size:.75rem;color:var(--fg-muted)}.sb-bar[data-astro-cid-aeb3ijaz]{flex:1;height:6px;border-radius:99px;background:var(--bg-soft);overflow:hidden}.sb-bar[data-astro-cid-aeb3ijaz] i[data-astro-cid-aeb3ijaz]{display:block;height:100%;background:var(--ok);border-radius:99px;transition:width .4s}.sb-ch[data-astro-cid-aeb3ijaz] summary[data-astro-cid-aeb3ijaz]{list-style:none;display:flex;align-items:center;gap:.55rem;padding:.45rem .5rem;border-radius:8px;cursor:pointer;font-weight:600;color:var(--fg)}.sb-ch[data-astro-cid-aeb3ijaz] summary[data-astro-cid-aeb3ijaz]::-webkit-details-marker{display:none}.sb-ch[data-astro-cid-aeb3ijaz] summary[data-astro-cid-aeb3ijaz]:hover{background:var(--bg-soft)}.sb-ch-no[data-astro-cid-aeb3ijaz]{width:22px;height:22px;border-radius:6px;background:var(--bg-soft);color:var(--fg-soft);font-size:.75rem;display:grid;place-items:center;flex:none}.sb-ch-title[data-astro-cid-aeb3ijaz]{flex:1}.sb-ch[data-astro-cid-aeb3ijaz] ul[data-astro-cid-aeb3ijaz]{list-style:none;padding:0 0 0 1rem;border-left:1px solid var(--border);margin:.1rem 0 .5rem 1.15rem}.sb-lesson[data-astro-cid-aeb3ijaz]{display:flex;align-items:center;gap:.5rem;padding:.32rem .55rem;border-radius:7px;color:var(--fg-soft);text-decoration:none!important;line-height:1.4}.sb-lesson[data-astro-cid-aeb3ijaz]:hover{background:var(--bg-soft);color:var(--fg)}.sb-lesson[data-astro-cid-aeb3ijaz].on{background:var(--primary-soft);color:var(--primary);font-weight:600}.sb-num[data-astro-cid-aeb3ijaz]{font-family:var(--font-mono);font-size:.72rem;color:var(--fg-muted);flex:none;min-width:2em}.sb-lt[data-astro-cid-aeb3ijaz]{flex:1}.sb-check[data-astro-cid-aeb3ijaz]{display:none;flex:none}.sb-lesson[data-astro-cid-aeb3ijaz].done .sb-check[data-astro-cid-aeb3ijaz]{display:block}.sb-mask[data-astro-cid-aeb3ijaz]{display:none}@media(max-width:1020px){.sidebar[data-astro-cid-aeb3ijaz]{position:fixed;left:0;top:var(--header-h);z-index:60;transform:translate(-102%);transition:transform .25s;box-shadow:var(--shadow-lg)}.sidebar[data-astro-cid-aeb3ijaz].open{transform:none}.sb-mask[data-astro-cid-aeb3ijaz].open{display:block;position:fixed;inset:var(--header-h) 0 0 0;background:#0000004d;z-index:55}}.toc[data-astro-cid-mpmzkgo2]{position:sticky;top:calc(var(--header-h) + 1.5rem);align-self:flex-start;width:var(--toc-w);flex:none;max-height:calc(100vh - var(--header-h) - 3rem);overflow-y:auto;font-size:.82rem;padding-left:.5rem}.toc-title[data-astro-cid-mpmzkgo2]{font-weight:700;color:var(--fg-soft);margin-bottom:.5rem;font-size:.78rem;letter-spacing:.05em}.toc[data-astro-cid-mpmzkgo2] ul[data-astro-cid-mpmzkgo2]{list-style:none;margin:0;padding:0;border-left:1px solid var(--border)}.toc[data-astro-cid-mpmzkgo2] li[data-astro-cid-mpmzkgo2] a[data-astro-cid-mpmzkgo2]{display:block;padding:.2rem 0 .2rem .8rem;margin-left:-1px;border-left:2px solid transparent;color:var(--fg-muted);line-height:1.45;text-decoration:none!important}.toc[data-astro-cid-mpmzkgo2] li[data-astro-cid-mpmzkgo2].d3 a[data-astro-cid-mpmzkgo2]{padding-left:1.6rem;font-size:.78rem}.toc[data-astro-cid-mpmzkgo2] li[data-astro-cid-mpmzkgo2] a[data-astro-cid-mpmzkgo2]:hover{color:var(--fg)}.toc[data-astro-cid-mpmzkgo2] li[data-astro-cid-mpmzkgo2] a[data-astro-cid-mpmzkgo2].on{color:var(--primary);border-left-color:var(--primary);font-weight:600}@media(max-width:1280px){.toc[data-astro-cid-mpmzkgo2]{display:none}}.lesson-shell[data-astro-cid-jkfvkvs4]{display:flex;align-items:flex-start}.lesson-main[data-astro-cid-jkfvkvs4]{flex:1;min-width:0;display:flex;justify-content:center;gap:2rem;padding:2rem 1.8rem 5rem}.lesson[data-astro-cid-jkfvkvs4]{flex:1}.crumbs[data-astro-cid-jkfvkvs4]{font-size:.82rem;color:var(--fg-muted);display:flex;gap:.45rem;flex-wrap:wrap}.crumbs[data-astro-cid-jkfvkvs4] a[data-astro-cid-jkfvkvs4]{color:var(--fg-muted)}.lesson-title[data-astro-cid-jkfvkvs4]{font-size:2.05rem;line-height:1.3;margin:.5rem 0 .4rem;letter-spacing:-.01em;display:flex;align-items:baseline;gap:.6rem;flex-wrap:wrap}.lesson-no[data-astro-cid-jkfvkvs4]{font-family:var(--font-mono);font-size:1.1rem;color:var(--primary);background:var(--primary-soft);padding:.05em .5em;border-radius:8px;font-weight:600}.lesson-desc[data-astro-cid-jkfvkvs4]{color:var(--fg-soft);font-size:1.05rem;margin:.4rem 0 .8rem}.lesson-meta[data-astro-cid-jkfvkvs4]{display:flex;flex-wrap:wrap;gap:.6rem 1.2rem;align-items:center;font-size:.84rem;color:var(--fg-soft);padding-bottom:1.2rem;border-bottom:1px solid var(--border)}.meta-item[data-astro-cid-jkfvkvs4].kp{display:flex;flex-wrap:wrap;gap:.35rem}.lesson-done[data-astro-cid-jkfvkvs4]{margin-top:3.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding:1.1rem 1.3rem;border-radius:var(--radius);background:var(--ok-soft);border:1px solid color-mix(in srgb,var(--ok) 30%,transparent)}.lesson-done[data-astro-cid-jkfvkvs4] p[data-astro-cid-jkfvkvs4]{margin:.1rem 0 0;font-size:.85rem;color:var(--fg-soft)}.pager[data-astro-cid-jkfvkvs4]{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1.5rem}.pg[data-astro-cid-jkfvkvs4]{display:flex;flex-direction:column;padding:.9rem 1.1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev);color:var(--fg);text-decoration:none!important;transition:border-color .15s,transform .15s}.pg[data-astro-cid-jkfvkvs4]:hover{border-color:var(--primary);transform:translateY(-1px)}.pg[data-astro-cid-jkfvkvs4] small[data-astro-cid-jkfvkvs4]{color:var(--fg-muted);font-size:.78rem}.pg[data-astro-cid-jkfvkvs4] span[data-astro-cid-jkfvkvs4]{font-weight:600}.pg[data-astro-cid-jkfvkvs4].next{text-align:right;grid-column:2}@media(max-width:700px){.lesson-main[data-astro-cid-jkfvkvs4]{padding:1.3rem 1rem 4rem}.lesson-title[data-astro-cid-jkfvkvs4]{font-size:1.6rem}.pager[data-astro-cid-jkfvkvs4]{grid-template-columns:1fr}.pg[data-astro-cid-jkfvkvs4].next{grid-column:1}}.callout[data-astro-cid-wi7smz4x]{margin:1.4em 0;padding:.8em 1.1em .9em;border-radius:var(--radius);border:1px solid;border-left-width:4px;font-size:.95rem}.co-title[data-astro-cid-wi7smz4x]{display:flex;align-items:center;gap:.45em;font-weight:700;font-size:.9rem}.co-body[data-astro-cid-wi7smz4x]>:first-child{margin-top:.35em}.co-body[data-astro-cid-wi7smz4x]>:last-child{margin-bottom:0}.c-info[data-astro-cid-wi7smz4x]{background:var(--info-soft);border-color:color-mix(in srgb,var(--info) 35%,transparent)}.c-info[data-astro-cid-wi7smz4x] .co-title[data-astro-cid-wi7smz4x]{color:var(--info)}.c-ok[data-astro-cid-wi7smz4x]{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 35%,transparent)}.c-ok[data-astro-cid-wi7smz4x] .co-title[data-astro-cid-wi7smz4x]{color:var(--ok)}.c-warn[data-astro-cid-wi7smz4x]{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 40%,transparent)}.c-warn[data-astro-cid-wi7smz4x] .co-title[data-astro-cid-wi7smz4x]{color:var(--warn)}.c-exam[data-astro-cid-wi7smz4x]{background:var(--exam-soft);border-color:color-mix(in srgb,var(--exam) 35%,transparent)}.c-exam[data-astro-cid-wi7smz4x] .co-title[data-astro-cid-wi7smz4x]{color:var(--exam)}.c-primary[data-astro-cid-wi7smz4x]{background:var(--primary-soft);border-color:color-mix(in srgb,var(--primary) 35%,transparent)}.c-primary[data-astro-cid-wi7smz4x] .co-title[data-astro-cid-wi7smz4x]{color:var(--primary)}.t-def[data-astro-cid-wi7smz4x]{background:var(--bg-elev)}.reveal[data-astro-cid-3rtgdvoy]{margin:1.5em 0;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev);overflow:hidden}.rv-q[data-astro-cid-3rtgdvoy]{padding:.9em 1.1em .3em}.rv-badge[data-astro-cid-3rtgdvoy]{display:inline-block;font-size:.75rem;font-weight:700;color:var(--exam);background:var(--exam-soft);padding:.05em .6em;border-radius:99px}.rv-body[data-astro-cid-3rtgdvoy]>:first-child{margin-top:.4em}details[data-astro-cid-3rtgdvoy]{border-top:1px dashed var(--border)}summary[data-astro-cid-3rtgdvoy]{cursor:pointer;padding:.55em 1.1em;font-size:.88rem;font-weight:600;color:var(--primary);user-select:none}summary[data-astro-cid-3rtgdvoy]:hover{background:var(--bg-soft)}.rv-ans[data-astro-cid-3rtgdvoy]{padding:0 1.1em .8em}.rv-ans[data-astro-cid-3rtgdvoy]>:first-child{margin-top:.3em}.steps-box[data-astro-cid-dlw34x3s]{margin:1.2em 0;padding:.4em 1.1em;border-radius:var(--radius);background:var(--bg-soft);border:1px solid var(--border)}.steps-box[data-astro-cid-dlw34x3s] ol{counter-reset:st;list-style:none;padding-left:0}.steps-box[data-astro-cid-dlw34x3s] ol>li{counter-increment:st;position:relative;padding-left:2.1em;margin:.55em 0}.steps-box[data-astro-cid-dlw34x3s] ol>li:before{content:counter(st);position:absolute;left:0;top:.2em;width:1.5em;height:1.5em;border-radius:50%;background:var(--primary);color:var(--primary-fg);font-size:.78em;font-weight:700;display:grid;place-items:center}