.callout[data-astro-cid-lnlu5god]{--c:var(--info);border:1px solid var(--line);border-left:2px solid var(--c);background:color-mix(in srgb, var(--c) 3.5%, var(--bg-elev));border-radius:0 var(--radius) var(--radius) 0;margin:1.6em 0;padding:14px 18px 16px;font-size:15px;line-height:1.85;position:relative}.callout-tip[data-astro-cid-lnlu5god]{--c:var(--brand)}.callout-key[data-astro-cid-lnlu5god]{--c:var(--accent)}.callout-warn[data-astro-cid-lnlu5god]{--c:var(--warn)}.callout-myth[data-astro-cid-lnlu5god]{--c:var(--danger)}.callout-example[data-astro-cid-lnlu5god]{--c:var(--ink);background:var(--bg-elev)}.callout-formula[data-astro-cid-lnlu5god]{--c:var(--put)}.callout-history[data-astro-cid-lnlu5god]{--c:var(--stock)}.callout-head[data-astro-cid-lnlu5god]{flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:6px;display:flex}.callout-code[data-astro-cid-lnlu5god]{font-family:var(--font-mono);letter-spacing:.1em;color:var(--c);font-size:10.5px;font-weight:600}.callout-label[data-astro-cid-lnlu5god]{color:var(--muted);font-size:12px}.callout-title[data-astro-cid-lnlu5god]{color:var(--ink);font-size:15px;font-weight:650}.callout-title[data-astro-cid-lnlu5god]:before{content:"/";color:var(--faint);margin-right:10px;font-weight:400}.callout-body[data-astro-cid-lnlu5god]{color:var(--ink-2)}.callout-body[data-astro-cid-lnlu5god]>*+*{margin-top:.7em}.callout-body[data-astro-cid-lnlu5god] ul,.callout-body[data-astro-cid-lnlu5god] ol{padding-left:1.3em}.callout-body[data-astro-cid-lnlu5god] .katex-display{background:0 0;border:0;margin:.6em 0;padding:4px 0}.steps[data-astro-cid-c6uapcsf]{border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--bg-elev);margin:1.6em 0;padding:16px 18px}.steps-title[data-astro-cid-c6uapcsf]{color:var(--ink);margin-bottom:10px;font-size:15px;font-weight:650}.steps-title[data-astro-cid-c6uapcsf]:before{content:"STEPS";font-family:var(--font-mono);letter-spacing:.1em;color:var(--accent);margin-right:10px;font-size:10.5px;font-weight:600}.steps[data-astro-cid-c6uapcsf] ol{counter-reset:step;margin:0;padding:0;list-style:none;position:relative}.steps[data-astro-cid-c6uapcsf] ol>li{counter-increment:step;padding-left:40px;font-size:15px;line-height:1.8;position:relative}.steps[data-astro-cid-c6uapcsf] ol>li+li{margin-top:10px}.steps[data-astro-cid-c6uapcsf] ol>li:before{content:counter(step, decimal-leading-zero);border:1px solid var(--line-strong);width:26px;height:20px;color:var(--muted);font-family:var(--font-mono);border-radius:4px;justify-content:center;align-items:center;font-size:11px;font-weight:500;display:flex;position:absolute;top:3px;left:0}.steps[data-astro-cid-c6uapcsf] .katex-display{text-align:left;background:0 0;border:0;margin:.4em 0;padding:2px 0}.strategy-card-inline[data-astro-cid-2az5ie32]{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-elev);color:inherit;transition:border-color .2s, box-shadow .2s, transform .2s var(--ease);align-items:center;gap:18px;margin:1.4em 0;padding:14px 18px;display:flex;text-decoration:none!important}.strategy-card-inline[data-astro-cid-2az5ie32]:hover{border-color:var(--line-strong);box-shadow:var(--shadow);color:inherit;transform:translateY(-1px)}.strategy-card-inline[data-astro-cid-2az5ie32] svg{background:var(--bg-sunken);border-radius:10px;flex:none}.sci-body[data-astro-cid-2az5ie32]{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.sci-en[data-astro-cid-2az5ie32]{font-family:var(--font-mono);letter-spacing:.08em;color:var(--faint);text-transform:uppercase;font-size:11px}.sci-name[data-astro-cid-2az5ie32]{color:var(--ink);font-size:16px}.sci-summary[data-astro-cid-2az5ie32]{color:var(--muted);font-size:14px;line-height:1.6}.sci-tags[data-astro-cid-2az5ie32]{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.sci-arrow[data-astro-cid-2az5ie32]{color:var(--faint);font-size:20px}@media (width<=560px){.strategy-card-inline[data-astro-cid-2az5ie32]{flex-direction:column;align-items:flex-start}.sci-arrow[data-astro-cid-2az5ie32]{display:none}}.read-progress[data-astro-cid-yuqcs7zz]{top:var(--header-h);z-index:49;pointer-events:none;height:1px;position:fixed;left:0;right:0}.read-progress[data-astro-cid-yuqcs7zz] span[data-astro-cid-yuqcs7zz]{background:var(--accent);transform-origin:0;height:100%;display:block;transform:scaleX(0)}.lesson-shell[data-astro-cid-yuqcs7zz]{grid-template-columns:264px minmax(0,1fr) 216px;gap:56px;max-width:1440px;margin:0 auto;padding:0 32px;display:grid}.lesson-nav[data-astro-cid-yuqcs7zz]{border-right:1px solid var(--line);position:relative}.lesson-nav-inner[data-astro-cid-yuqcs7zz]{top:var(--header-h);max-height:calc(100vh - var(--header-h));scrollbar-width:thin;padding:28px 16px 40px 0;font-size:13.5px;position:sticky;overflow-y:auto}.nav-all[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);color:var(--muted);margin-bottom:14px;font-size:11.5px;display:inline-block}.nav-all[data-astro-cid-yuqcs7zz]:hover{color:var(--ink)}.nav-part[data-astro-cid-yuqcs7zz]{padding:2px 0}.nav-part[data-astro-cid-yuqcs7zz] summary[data-astro-cid-yuqcs7zz]{color:var(--ink);cursor:pointer;border-radius:var(--radius);align-items:center;gap:10px;padding:7px 6px;font-weight:600;list-style:none;display:flex}.nav-part[data-astro-cid-yuqcs7zz] summary[data-astro-cid-yuqcs7zz]::-webkit-details-marker{display:none}.nav-part[data-astro-cid-yuqcs7zz] summary[data-astro-cid-yuqcs7zz]:hover{background:var(--bg-hover)}.nav-part-no[data-astro-cid-yuqcs7zz]{color:var(--faint);font-size:11px}.nav-part[data-astro-cid-yuqcs7zz][open] .nav-part-no[data-astro-cid-yuqcs7zz]{color:var(--accent)}.nav-part[data-astro-cid-yuqcs7zz] ol[data-astro-cid-yuqcs7zz]{border-left:1px solid var(--line);margin:2px 0 8px 11px;padding:0 0 0 12px;list-style:none}.nav-lesson[data-astro-cid-yuqcs7zz]{border-radius:var(--radius);color:var(--muted);align-items:flex-start;gap:8px;padding:5px 8px;line-height:1.5;display:flex;position:relative}.nav-lesson[data-astro-cid-yuqcs7zz]:hover{color:var(--ink);background:var(--bg-hover)}.nav-lesson[data-astro-cid-yuqcs7zz].current{color:var(--ink);background:var(--bg-sunken);font-weight:600}.nav-lesson[data-astro-cid-yuqcs7zz].current:before{content:"";background:var(--accent);width:1px;position:absolute;top:6px;bottom:6px;left:-13px}.nav-no[data-astro-cid-yuqcs7zz]{min-width:26px;color:var(--faint);flex:none;padding-top:2px;font-size:11px}.nav-lesson[data-astro-cid-yuqcs7zz].current .nav-no[data-astro-cid-yuqcs7zz]{color:var(--accent)}.lesson[data-astro-cid-yuqcs7zz]{width:100%;min-width:0;max-width:740px;margin:0 auto;padding:44px 0 0}.crumbs[data-astro-cid-yuqcs7zz]{color:var(--faint);gap:8px;margin-bottom:20px;font-size:12.5px;display:flex}.crumbs[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]{color:var(--muted)}.crumbs[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]:hover{color:var(--ink)}.lesson-meta[data-astro-cid-yuqcs7zz]{flex-wrap:wrap;align-items:center;gap:0;margin-bottom:18px;display:flex}.lesson-meta[data-astro-cid-yuqcs7zz] .eyebrow[data-astro-cid-yuqcs7zz]{color:var(--ink);margin-right:14px}.meta-item[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);color:var(--muted);border-left:1px solid var(--line-strong);padding:0 12px;font-size:11.5px;line-height:1.2}.lesson-title[data-astro-cid-yuqcs7zz]{letter-spacing:-.045em;color:var(--ink);font-size:clamp(2.1rem,4.4vw,3rem);font-weight:700;line-height:1.15}.lesson-hook[data-astro-cid-yuqcs7zz]{color:var(--muted);margin-top:16px;font-size:1.15rem;line-height:1.75}.takeaways[data-astro-cid-yuqcs7zz]{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-sunken);margin:32px 0 8px;padding:18px 20px}.takeaways-title[data-astro-cid-yuqcs7zz]{color:var(--muted);align-items:baseline;gap:10px;margin-bottom:10px;font-size:12.5px;display:flex}.takeaways-title[data-astro-cid-yuqcs7zz] .label[data-astro-cid-yuqcs7zz]{color:var(--accent)}.takeaways[data-astro-cid-yuqcs7zz] ol[data-astro-cid-yuqcs7zz]{counter-reset:tk;color:var(--ink-2);margin:0;padding:0;font-size:15px;line-height:1.75;list-style:none}.takeaways[data-astro-cid-yuqcs7zz] li[data-astro-cid-yuqcs7zz]{counter-increment:tk;padding-left:34px;position:relative}.takeaways[data-astro-cid-yuqcs7zz] li[data-astro-cid-yuqcs7zz]+li[data-astro-cid-yuqcs7zz]{margin-top:6px}.takeaways[data-astro-cid-yuqcs7zz] li[data-astro-cid-yuqcs7zz]:before{content:counter(tk, decimal-leading-zero);font-family:var(--font-mono);color:var(--faint);font-size:11.5px;line-height:26px;position:absolute;top:0;left:0}.takeaways[data-astro-cid-yuqcs7zz] b{color:var(--ink);font-weight:650}.lesson-end[data-astro-cid-yuqcs7zz]{flex-direction:column;gap:48px;margin-top:72px;display:flex}.end-title[data-astro-cid-yuqcs7zz]{letter-spacing:-.03em;color:var(--ink);border-top:1px solid var(--line);align-items:baseline;gap:12px;margin-bottom:16px;padding-top:20px;font-size:1.4rem;font-weight:700;display:flex}.end-title[data-astro-cid-yuqcs7zz] .label[data-astro-cid-yuqcs7zz]{color:var(--accent)}.related-grid[data-astro-cid-yuqcs7zz]{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;display:grid}.related-card[data-astro-cid-yuqcs7zz]{align-items:center;gap:14px;padding:12px 14px;display:flex!important}.related-card[data-astro-cid-yuqcs7zz] b[data-astro-cid-yuqcs7zz]{color:var(--ink);font-size:14.5px;font-weight:600;display:block}.related-card[data-astro-cid-yuqcs7zz] svg{flex:none}.related-kind[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);letter-spacing:.08em;color:var(--faint);font-size:10.5px}.related-icon[data-astro-cid-yuqcs7zz]{border-radius:var(--radius);border:1px solid var(--line-strong);width:44px;height:44px;color:var(--ink-2);flex:none;justify-content:center;align-items:center;display:flex}.pager[data-astro-cid-yuqcs7zz]{border:1px solid var(--line);border-radius:var(--radius-lg);grid-template-columns:1fr 1fr;gap:0;display:grid;overflow:hidden}.pager[data-astro-cid-yuqcs7zz]>[data-astro-cid-yuqcs7zz]:nth-child(2){border-left:1px solid var(--line)}.pager-link[data-astro-cid-yuqcs7zz]{color:var(--ink);flex-direction:column;gap:4px;padding:18px 20px;transition:background .2s;display:flex}.pager-link[data-astro-cid-yuqcs7zz]:hover{background:var(--bg-sunken);color:var(--ink)}.pager-link[data-astro-cid-yuqcs7zz].next{text-align:right}.pager-dir[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);color:var(--muted);font-size:11.5px}.pager-link[data-astro-cid-yuqcs7zz]:hover .pager-dir[data-astro-cid-yuqcs7zz]{color:var(--accent)}.pager-title[data-astro-cid-yuqcs7zz]{font-weight:600}.lesson-toc[data-astro-cid-yuqcs7zz]{position:relative}.toc-inner[data-astro-cid-yuqcs7zz]{top:calc(var(--header-h) + 44px);max-height:calc(100vh - var(--header-h) - 60px);padding-top:44px;font-size:12.5px;position:sticky;overflow-y:auto}.toc-title[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:10px;font-size:11px}.toc-inner[data-astro-cid-yuqcs7zz] ul[data-astro-cid-yuqcs7zz]{border-left:1px solid var(--line);margin:0;padding:0;list-style:none}.toc-inner[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]{color:var(--muted);border-left:1px solid #0000;margin-left:-1px;padding:4px 0 4px 14px;line-height:1.5;display:block}.toc-inner[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]:hover{color:var(--ink)}.toc-inner[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz].active{color:var(--ink);border-left-color:var(--accent)}.toc-d3[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]{font-size:12px;padding-left:26px!important}.mobile-toc[data-astro-cid-yuqcs7zz]{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-elev);margin-bottom:18px;font-size:14px;display:none}.mobile-toc[data-astro-cid-yuqcs7zz] summary[data-astro-cid-yuqcs7zz]{cursor:pointer;color:var(--ink);justify-content:space-between;padding:10px 14px;font-weight:600;list-style:none;display:flex}.mobile-toc[data-astro-cid-yuqcs7zz] summary[data-astro-cid-yuqcs7zz]::-webkit-details-marker{display:none}.mt-hint[data-astro-cid-yuqcs7zz]{font-family:var(--font-mono);color:var(--accent);font-size:12px;font-weight:500}.mobile-toc[data-astro-cid-yuqcs7zz] ol[data-astro-cid-yuqcs7zz]{margin:0;padding:0 8px 8px;list-style:none}.mt-sections[data-astro-cid-yuqcs7zz]{border-top:1px solid var(--line);flex-direction:column;gap:2px;padding:10px 16px 14px;display:flex}.mt-sections[data-astro-cid-yuqcs7zz] a[data-astro-cid-yuqcs7zz]{color:var(--muted);padding:3px 0}@media (width<=1240px){.lesson-shell[data-astro-cid-yuqcs7zz]{grid-template-columns:240px minmax(0,1fr);gap:48px}.lesson-toc[data-astro-cid-yuqcs7zz]{display:none}}@media (width<=900px){.mobile-toc[data-astro-cid-yuqcs7zz]{display:block}.lesson-shell[data-astro-cid-yuqcs7zz]{grid-template-columns:minmax(0,1fr);padding:0 18px}.lesson-nav[data-astro-cid-yuqcs7zz]{display:none}.lesson[data-astro-cid-yuqcs7zz]{padding-top:24px}.pager[data-astro-cid-yuqcs7zz]{grid-template-columns:1fr}.pager[data-astro-cid-yuqcs7zz]>[data-astro-cid-yuqcs7zz]:nth-child(2){border-left:0;border-top:1px solid var(--line)}}