.ac-blocks[data-astro-cid-7seeoxyc]{display:block}.ac-block[data-astro-cid-7seeoxyc]{scroll-margin-top:90px}.ac-block[data-astro-cid-7seeoxyc]+.ac-block[data-astro-cid-7seeoxyc]{margin-top:1.6rem}.ac-blocks[data-astro-cid-7seeoxyc] h2[data-astro-cid-7seeoxyc]{margin-top:1.9em;font-size:clamp(1.3rem,2.4vw,1.75rem)}.ac-sub-h[data-astro-cid-7seeoxyc]{font-size:1.08rem;margin-bottom:.5rem}.ac-intro[data-astro-cid-7seeoxyc]{color:var(--ink-2)}.ac-steps[data-astro-cid-7seeoxyc]{list-style:none;margin:1.1rem 0 0;padding:0;display:grid;gap:12px}.ac-step[data-astro-cid-7seeoxyc]{display:flex;gap:14px;padding:16px 18px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:border-color .2s ease,background .2s ease,opacity .2s ease}.ac-step[data-astro-cid-7seeoxyc].is-done{border-color:color-mix(in oklab,var(--good) 55%,transparent);background:color-mix(in oklab,var(--good) 7%,var(--panel))}.ac-step[data-astro-cid-7seeoxyc].is-done .ac-step-h[data-astro-cid-7seeoxyc]{opacity:.72}.ac-tick[data-astro-cid-7seeoxyc]{flex:none;width:26px;height:26px;margin-top:1px;border-radius:8px;cursor:pointer;border:1.5px solid var(--line-strong);background:var(--bg);color:transparent;display:grid;place-items:center;transition:all .15s ease}.ac-tick[data-astro-cid-7seeoxyc]:hover{border-color:var(--gold-line)}.ac-tick-mark[data-astro-cid-7seeoxyc]{font-size:.82rem;font-weight:800;line-height:1}.ac-tick[data-astro-cid-7seeoxyc][aria-checked=true]{background:var(--good);border-color:var(--good);color:#06231a}.ac-step-body[data-astro-cid-7seeoxyc]{min-width:0}.ac-step-h[data-astro-cid-7seeoxyc]{display:flex;gap:10px;align-items:baseline;font-weight:600;color:var(--ink);margin-bottom:4px}.ac-step-n[data-astro-cid-7seeoxyc]{font-family:var(--font-mono);font-size:.8rem;color:var(--gold);flex:none}.ac-step-body[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{margin:.4em 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55%,transparent)}.ac-reveal-btn[data-astro-cid-7seeoxyc]{display:inline-flex;align-items:center;gap:8px;font:inherit;font-size:.9rem;cursor:pointer;padding:8px 14px;border-radius:999px;border:1px solid var(--line-strong);background:var(--bg);color:var(--ink);transition:border-color .15s,color .15s}.ac-reveal-btn[data-astro-cid-7seeoxyc]:hover{border-color:var(--gold-line);color:var(--gold)}.ac-chev[data-astro-cid-7seeoxyc]{color:var(--gold);font-size:.7rem;transition:transform .2s ease}.ac-reveal-btn[data-astro-cid-7seeoxyc][aria-expanded=true] .ac-chev[data-astro-cid-7seeoxyc]{transform:rotate(180deg)}.ac-reveal-ans[data-astro-cid-7seeoxyc]{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);animation:ac-fade .3s ease}.ac-reveal-ans[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{margin:.5em 0;color:var(--ink-2)}@keyframes ac-fade{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.ac-quiz[data-astro-cid-7seeoxyc]{border:1px solid 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var(--line-strong);color:var(--ink-3)}.ac-q-opts[data-astro-cid-7seeoxyc]{display:grid;gap:8px}.ac-opt[data-astro-cid-7seeoxyc]{display:flex;align-items:center;gap:12px;text-align:left;font:inherit;font-size:.95rem;cursor:pointer;padding:11px 14px;border-radius:11px;border:1px solid var(--line-strong);background:var(--bg);color:var(--ink);transition:border-color .15s,background .15s,transform .1s}.ac-opt[data-astro-cid-7seeoxyc]:hover:not(:disabled){border-color:var(--gold-line)}.ac-opt[data-astro-cid-7seeoxyc]:active:not(:disabled){transform:translateY(1px)}.ac-opt-key[data-astro-cid-7seeoxyc]{flex:none;width:1.5rem;height:1.5rem;border-radius:7px;display:grid;place-items:center;font-family:var(--font-mono);font-size:.78rem;background:var(--panel);border:1px solid var(--line);color:var(--ink-3)}.ac-opt-label[data-astro-cid-7seeoxyc]{flex:1}.ac-opt-mark[data-astro-cid-7seeoxyc]{flex:none;width:1.2rem;text-align:center;font-weight:800;color:transparent}.ac-opt[data-astro-cid-7seeoxyc].is-correct{border-color:var(--good);background:color-mix(in oklab,var(--good) 12%,var(--bg))}.ac-opt[data-astro-cid-7seeoxyc].is-correct .ac-opt-mark[data-astro-cid-7seeoxyc]:after{content:"✓";color:var(--good)}.ac-opt[data-astro-cid-7seeoxyc].is-correct .ac-opt-key[data-astro-cid-7seeoxyc]{background:var(--good);border-color:var(--good);color:#06231a}.ac-opt[data-astro-cid-7seeoxyc].is-wrong{border-color:#e0654f;background:color-mix(in oklab,#e0654f 12%,var(--bg))}.ac-opt[data-astro-cid-7seeoxyc].is-wrong .ac-opt-mark[data-astro-cid-7seeoxyc]:after{content:"✕";color:#e0654f}.ac-opt[data-astro-cid-7seeoxyc]:disabled{cursor:default}.ac-opt[data-astro-cid-7seeoxyc].is-dim{opacity:.55}.ac-q-feedback[data-astro-cid-7seeoxyc]{margin:10px 0 0;font-size:.88rem;font-weight:600}.ac-q-feedback[data-astro-cid-7seeoxyc].is-right{color:var(--good)}.ac-q-feedback[data-astro-cid-7seeoxyc].is-wrong{color:#e0654f}.ac-q-explain[data-astro-cid-7seeoxyc]{margin:8px 0 0;font-size:.9rem;color:var(--ink-2);padding:10px 12px;border-radius:10px;background:var(--bg-soft);border:1px solid var(--line)}.ac-checks[data-astro-cid-7seeoxyc]{list-style:none;margin:.8rem 0 0;padding:0;display:grid;gap:8px}.ac-checkitem[data-astro-cid-7seeoxyc]{display:flex;gap:12px;align-items:flex-start;color:var(--ink-2)}.ac-checkitem[data-astro-cid-7seeoxyc].is-done .ac-checkitem-label[data-astro-cid-7seeoxyc]{color:var(--ink-3);text-decoration:line-through}.ac-checkitem-label[data-astro-cid-7seeoxyc]{padding-top:2px}.ac-code[data-astro-cid-7seeoxyc]{margin:1.2rem 0}.ac-code-frame[data-astro-cid-7seeoxyc]{border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;background:var(--bg-soft)}.ac-code-bar[data-astro-cid-7seeoxyc]{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--line);background:var(--panel)}.ac-code-lang[data-astro-cid-7seeoxyc]{font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}.ac-copy[data-astro-cid-7seeoxyc]{font:inherit;font-size:.76rem;font-family:var(--font-mono);cursor:pointer;padding:4px 10px;border-radius:7px;border:1px solid var(--line-strong);background:var(--bg);color:var(--ink-2);transition:all .15s}.ac-copy[data-astro-cid-7seeoxyc]:hover{border-color:var(--gold-line);color:var(--gold)}.ac-copy[data-astro-cid-7seeoxyc].is-copied{border-color:var(--good);color:var(--good)}.ac-pre[data-astro-cid-7seeoxyc]{margin:0;padding:14px 16px;overflow-x:auto;font-family:var(--font-mono);font-size:.85rem;line-height:1.6;color:var(--ink)}.ac-code-cap[data-astro-cid-7seeoxyc]{margin:8px 2px 0;font-size:.82rem}.ac-tabs[data-astro-cid-7seeoxyc]{margin:1.2rem 0}.ac-tablist[data-astro-cid-7seeoxyc]{display:flex;flex-wrap:wrap;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px}.ac-tab[data-astro-cid-7seeoxyc]{font:inherit;font-size:.9rem;cursor:pointer;padding:9px 16px;border:none;background:none;color:var(--ink-3);border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .15s,border-color .15s}.ac-tab[data-astro-cid-7seeoxyc]:hover{color:var(--ink)}.ac-tab[data-astro-cid-7seeoxyc][aria-selected=true]{color:var(--gold);border-bottom-color:var(--gold)}.ac-tabpanel[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{margin:.5em 0;color:var(--ink-2)}.ac-callout[data-astro-cid-7seeoxyc]{display:flex;gap:14px;margin:1.2rem 0;padding:14px 16px;border-radius:var(--radius);border:1px solid var(--line-strong);border-left-width:3px;background:var(--panel)}.ac-callout-badge[data-astro-cid-7seeoxyc]{flex:none;font-family:var(--font-mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;padding:2px 8px;border-radius:6px;height:fit-content}.ac-callout-body[data-astro-cid-7seeoxyc]{min-width:0}.ac-callout-body[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{margin:.35em 0;color:var(--ink-2);font-size:.94rem}.ac-callout-title[data-astro-cid-7seeoxyc]{display:block;color:var(--ink);margin-bottom:2px}.ac-callout--tip[data-astro-cid-7seeoxyc]{border-left-color:var(--good)}.ac-callout--tip[data-astro-cid-7seeoxyc] .ac-callout-badge[data-astro-cid-7seeoxyc]{color:var(--good);border:1px solid color-mix(in oklab,var(--good) 45%,transparent)}.ac-callout--warning[data-astro-cid-7seeoxyc]{border-left-color:#e0a84f}.ac-callout--warning[data-astro-cid-7seeoxyc] .ac-callout-badge[data-astro-cid-7seeoxyc]{color:#e0a84f;border:1px solid color-mix(in oklab,#e0a84f 45%,transparent)}.ac-callout--note[data-astro-cid-7seeoxyc]{border-left-color:var(--cool)}.ac-callout--note[data-astro-cid-7seeoxyc] .ac-callout-badge[data-astro-cid-7seeoxyc]{color:var(--cool);border:1px solid color-mix(in oklab,var(--cool) 45%,transparent)}.ac-callout--shortcut[data-astro-cid-7seeoxyc]{border-left-color:var(--gold)}.ac-callout--shortcut[data-astro-cid-7seeoxyc] .ac-callout-badge[data-astro-cid-7seeoxyc]{color:var(--gold);border:1px solid var(--gold-line)}.ac-flash-hint[data-astro-cid-7seeoxyc]{font-size:.76rem;margin:0 0 10px}.ac-flash-grid[data-astro-cid-7seeoxyc]{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.ac-fcard[data-astro-cid-7seeoxyc]{perspective:900px;background:none;border:none;padding:0;cursor:pointer;min-height:104px;font:inherit}.ac-fcard-inner[data-astro-cid-7seeoxyc]{position:relative;display:block;width:100%;height:100%;min-height:104px;transition:transform .5s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}.ac-fcard[data-astro-cid-7seeoxyc][aria-pressed=true] .ac-fcard-inner[data-astro-cid-7seeoxyc]{transform:rotateY(180deg)}.ac-fcard-face[data-astro-cid-7seeoxyc]{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:14px;border-radius:var(--radius);border:1px solid var(--line-strong);backface-visibility:hidden;-webkit-backface-visibility:hidden}.ac-fcard-front[data-astro-cid-7seeoxyc]{background:var(--card);color:var(--ink);font-weight:600}.ac-fcard-back[data-astro-cid-7seeoxyc]{background:linear-gradient(180deg,var(--gold-soft),transparent),var(--panel);color:var(--ink-2);font-size:.88rem;transform:rotateY(180deg)}.ac-challenge[data-astro-cid-7seeoxyc]{margin:1.4rem 0;padding:18px 20px;border-radius:var(--radius-lg);border:1px dashed var(--gold-line);background:var(--panel)}.ac-challenge-head[data-astro-cid-7seeoxyc]{display:flex;align-items:center;gap:10px;margin-bottom:8px}.ac-challenge-head[data-astro-cid-7seeoxyc] strong[data-astro-cid-7seeoxyc]{color:var(--ink)}.ac-challenge[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{color:var(--ink-2);margin:.4em 0}.ac-hints[data-astro-cid-7seeoxyc]{display:grid;gap:6px;margin:12px 0}.ac-hint[data-astro-cid-7seeoxyc]{border:1px solid var(--line);border-radius:10px;background:var(--bg-soft);padding:0 14px}.ac-hint[data-astro-cid-7seeoxyc] summary[data-astro-cid-7seeoxyc]{cursor:pointer;padding:10px 0;font-size:.88rem;color:var(--cool);font-family:var(--font-mono)}.ac-hint[data-astro-cid-7seeoxyc] summary[data-astro-cid-7seeoxyc]:hover{color:var(--ink)}.ac-hint[data-astro-cid-7seeoxyc] p[data-astro-cid-7seeoxyc]{padding-bottom:10px;margin:0;font-size:.92rem}.ac-sol-btn[data-astro-cid-7seeoxyc]{font:inherit;font-size:.88rem;cursor:pointer;padding:9px 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16px;background:var(--bg-soft)}.ac-kbd-combo[data-astro-cid-7seeoxyc]{flex:none;display:inline-flex;align-items:center;gap:4px;min-width:130px}.ac-kbd-plus[data-astro-cid-7seeoxyc]{color:var(--ink-3);font-size:.8rem}kbd[data-astro-cid-7seeoxyc]{font-family:var(--font-mono);font-size:.78rem;line-height:1;padding:5px 8px;border-radius:7px;background:var(--card);border:1px solid var(--line-strong);border-bottom-width:2px;color:var(--ink)}.ac-key-action[data-astro-cid-7seeoxyc]{color:var(--ink-2);font-size:.92rem}.ac-figure[data-astro-cid-7seeoxyc]{margin:1.4rem 0}.ac-figure[data-astro-cid-7seeoxyc] img[data-astro-cid-7seeoxyc]{width:100%;border-radius:var(--radius);border:1px solid var(--line)}.ac-figure[data-astro-cid-7seeoxyc] figcaption[data-astro-cid-7seeoxyc]{margin-top:8px;font-size:.84rem;text-align:center}@media(max-width:560px){.ac-kbd-combo[data-astro-cid-7seeoxyc]{min-width:0}.ac-key[data-astro-cid-7seeoxyc]{flex-wrap:wrap;gap:6px}}.ac-lesson[data-astro-cid-fej42l4m]{padding-top:clamp(28px,5vw,56px)}.ac-grid[data-astro-cid-fej42l4m]{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:clamp(28px,4vw,60px);align-items:start}.ac-main[data-astro-cid-fej42l4m]{max-width:74ch}.ac-main[data-astro-cid-fej42l4m].prose h2[data-astro-cid-fej42l4m]{margin-top:1.9em;font-size:clamp(1.3rem,2.4vw,1.8rem)}.ac-main[data-astro-cid-fej42l4m].prose h3[data-astro-cid-fej42l4m]{margin-top:1.1em}.ac-main[data-astro-cid-fej42l4m].prose p[data-astro-cid-fej42l4m]{margin:.7em 0}.ac-title[data-astro-cid-fej42l4m]{margin:6px 0 14px}.ac-meta[data-astro-cid-fej42l4m]{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px}.ac-chip[data-astro-cid-fej42l4m]{display:inline-flex;align-items:baseline;gap:7px;font-size:.82rem;color:var(--ink-2);border:1px solid var(--line-strong);background:var(--panel);border-radius:999px;padding:6px 13px}.ac-chip[data-astro-cid-fej42l4m] b[data-astro-cid-fej42l4m]{font-family:var(--font-mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-3)}.ac-prereq[data-astro-cid-fej42l4m]{font-size:.9rem;margin:12px 0}.ac-prereq-label[data-astro-cid-fej42l4m]{font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);margin-right:6px}.ac-prereq[data-astro-cid-fej42l4m] a[data-astro-cid-fej42l4m]{color:var(--cool)}.ac-prereq[data-astro-cid-fej42l4m] a[data-astro-cid-fej42l4m]:hover{color:var(--gold)}.ac-objectives[data-astro-cid-fej42l4m]{margin:22px 0 8px;padding:18px 20px;border-radius:var(--radius);border:1px solid var(--gold-line);background:linear-gradient(180deg,var(--gold-soft),transparent),var(--panel)}.ac-obj-eyebrow[data-astro-cid-fej42l4m]{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--gold);margin-bottom:10px}.ac-objectives[data-astro-cid-fej42l4m] ul[data-astro-cid-fej42l4m]{margin:0;padding-left:0;list-style:none;display:grid;gap:8px}.ac-objectives[data-astro-cid-fej42l4m] li[data-astro-cid-fej42l4m]{display:flex;gap:10px;color:var(--ink-2)}.ac-objectives[data-astro-cid-fej42l4m] li[data-astro-cid-fej42l4m]:before{content:"✓";color:var(--good);font-weight:800;flex:none}.ac-complete-band[data-astro-cid-fej42l4m]{margin:2.4rem 0 1rem;border:1px solid var(--line-strong);border-radius:var(--radius-lg);background:linear-gradient(180deg,var(--panel),var(--bg-soft));overflow:hidden;transition:border-color .3s}.ac-complete-band[data-astro-cid-fej42l4m].is-complete{border-color:color-mix(in oklab,var(--good) 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var(--line);padding-top:16px}.ac-toc-label[data-astro-cid-fej42l4m]{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);margin-bottom:10px}.ac-toc[data-astro-cid-fej42l4m] ol[data-astro-cid-fej42l4m]{list-style:none;margin:0;padding:0;display:grid;gap:2px}.ac-toc[data-astro-cid-fej42l4m] a[data-astro-cid-fej42l4m]{display:block;padding:5px 10px;border-left:2px solid transparent;font-size:.84rem;color:var(--ink-3);transition:color .15s,border-color .15s}.ac-toc[data-astro-cid-fej42l4m] a[data-astro-cid-fej42l4m]:hover{color:var(--ink)}.ac-toc[data-astro-cid-fej42l4m] a[data-astro-cid-fej42l4m].is-active{color:var(--gold);border-left-color:var(--gold)}.ac-rail-back[data-astro-cid-fej42l4m]{font-size:.76rem;color:var(--ink-3)}.ac-rail-back[data-astro-cid-fej42l4m]:hover{color:var(--gold)}.ac-mobilebar[data-astro-cid-fej42l4m]{display:none;position:sticky;top:68px;z-index:30;height:3px;background:var(--line)}.ac-mobilebar-fill[data-astro-cid-fej42l4m]{display:block;height:100%;width:0%;background:var(--gold);transition:width .4s ease}@media(max-width:980px){.ac-grid[data-astro-cid-fej42l4m]{grid-template-columns:1fr}.ac-rail[data-astro-cid-fej42l4m]{display:none}.ac-mobilebar[data-astro-cid-fej42l4m]{display:block}}@media(max-width:560px){.ac-pager[data-astro-cid-fej42l4m]{grid-template-columns:1fr}.ac-shortcut[data-astro-cid-fej42l4m]{flex-wrap:wrap}.ac-shortcut-cta[data-astro-cid-fej42l4m]{flex-direction:row;width:100%;justify-content:space-between;align-items:center}}