.hand[data-astro-cid-istevu6c]{font-family:Caveat,Segoe Print,Bradley Hand,cursive;font-weight:600}.lecture[data-astro-cid-istevu6c]{padding-block:6rem}@media (width>=640px){.lecture[data-astro-cid-istevu6c]{padding-block:8rem}}#roaming[data-astro-cid-istevu6c]{padding-top:2.5rem}@media (width>=640px){#roaming[data-astro-cid-istevu6c]{padding-top:3.5rem}}[data-astro-cid-istevu6c][data-lesson]{scroll-margin-top:5rem}.lec-head[data-astro-cid-istevu6c]{letter-spacing:.12em;text-transform:uppercase;color:#7aa2ff;justify-content:space-between;align-items:baseline;gap:1rem;font-size:14px;font-weight:600;display:flex}.lec-head[data-astro-cid-istevu6c] .hand[data-astro-cid-istevu6c]{letter-spacing:0;text-transform:none;color:#ffffff73;font-size:24px}.strip[data-astro-cid-istevu6c]{animation:70s linear infinite nb-strip}.strip[data-astro-cid-istevu6c]:hover{animation-play-state:paused}@keyframes nb-strip{to{transform:translate(-50%)}}.ticket[data-astro-cid-istevu6c]{transform:rotate(var(--r))}.hl[data-astro-cid-istevu6c]{color:#fff}@keyframes caret{50%{opacity:0}}.caret[data-astro-cid-istevu6c]{vertical-align:-.06em;background:#7aa2ff;width:.06em;height:.85em;margin-left:.04em;animation:1s step-end infinite caret;display:inline-block}@media (prefers-reduced-motion:reduce){.caret[data-astro-cid-istevu6c]{animation:none}}.strike[data-astro-cid-istevu6c]{transition:color .3s var(--d,0s);position:relative}.strike[data-astro-cid-istevu6c]:after{content:"";transform-origin:0;height:3px;transition:transform .55s ease var(--d,0s);background:#f87171;border-radius:3px;position:absolute;top:54%;left:-6px;right:-6px;transform:scaleX(0)rotate(-1.5deg)}.on[data-astro-cid-istevu6c] .strike[data-astro-cid-istevu6c]:after{transform:scaleX(1)rotate(-1.5deg)}.on[data-astro-cid-istevu6c] .strike[data-astro-cid-istevu6c]{color:#ffffff59}.write[data-astro-cid-istevu6c]{clip-path:inset(-20% 100% -20% 0);transition:clip-path 1.2s ease-out var(--d,0s)}.on[data-astro-cid-istevu6c] .write[data-astro-cid-istevu6c],.write[data-astro-cid-istevu6c].on{clip-path:inset(-20% -5% -20% 0)}.stamp[data-astro-cid-istevu6c]{opacity:0}.stamp[data-astro-cid-istevu6c].on{opacity:.95;animation:.45s cubic-bezier(.3,1.6,.5,1) nb-stamp;transform:rotate(-12deg)}@keyframes nb-stamp{0%{opacity:0;transform:scale(1.9)rotate(-18deg)}}.draw[data-astro-cid-istevu6c]{stroke-dasharray:1;stroke-dashoffset:1px;transition:stroke-dashoffset .9s ease var(--d,0s)}.on[data-astro-cid-istevu6c] .draw[data-astro-cid-istevu6c]{stroke-dashoffset:0}.fade[data-astro-cid-istevu6c]{opacity:0;transition:opacity .8s ease var(--d,0s)}.on[data-astro-cid-istevu6c] .fade[data-astro-cid-istevu6c]{opacity:1}.circle[data-astro-cid-istevu6c] path[data-astro-cid-istevu6c]{stroke-dasharray:1;stroke-dashoffset:1px;transition:stroke-dashoffset .6s ease var(--d,0s)}.on[data-astro-cid-istevu6c] .circle[data-astro-cid-istevu6c] path[data-astro-cid-istevu6c]{stroke-dashoffset:0}.ticket[data-astro-cid-istevu6c]{opacity:0;transition:opacity .5s var(--d), translate .6s cubic-bezier(.2, 1.3, .4, 1) var(--d);translate:-30px}.on[data-astro-cid-istevu6c] .ticket[data-astro-cid-istevu6c]{opacity:1;translate:0}.red[data-astro-cid-istevu6c].re{animation:.6s ease-out nb-write}@keyframes nb-write{0%{clip-path:inset(-20% 100% -20% 0)}to{clip-path:inset(-20% -5% -20% 0)}}.rail[data-astro-cid-istevu6c]{opacity:0;pointer-events:none;transition:translate .6s cubic-bezier(.2,1.2,.3,1),opacity .4s;translate:24px -50%}.rail[data-astro-cid-istevu6c].show{opacity:1;translate:0 -50%}.num[data-astro-cid-istevu6c]{opacity:0;max-width:0;transition:max-width .4s,opacity .3s,margin .4s;overflow:hidden}.toc[data-astro-cid-istevu6c].now .num[data-astro-cid-istevu6c]{opacity:1;max-width:2rem;margin-right:.55rem}.tick[data-astro-cid-istevu6c]{background:#ffffff38;border-radius:3px;flex-shrink:0;width:12px;height:3px;transition:width .45s cubic-bezier(.2,1.3,.3,1),background .3s;display:block}.toc[data-astro-cid-istevu6c].seen .tick[data-astro-cid-istevu6c]{background:#7aa2ff}.toc[data-astro-cid-istevu6c].now .tick[data-astro-cid-istevu6c]{background:#fff;width:30px}@media (width<=639px){.toc[data-astro-cid-istevu6c].now .num[data-astro-cid-istevu6c]{opacity:0;max-width:0;margin:0}.tick[data-astro-cid-istevu6c]{width:6px}.toc[data-astro-cid-istevu6c].now .tick[data-astro-cid-istevu6c]{width:14px}.rail[data-astro-cid-istevu6c] ol[data-astro-cid-istevu6c]{padding:2px}.toc[data-astro-cid-istevu6c]{padding-inline:4px}}.no-bar[data-astro-cid-istevu6c]{scrollbar-width:none}.no-bar[data-astro-cid-istevu6c]::-webkit-scrollbar{display:none}.size[data-astro-cid-istevu6c][aria-selected=true]{color:#0a0a0a;background:#fff}.opt[data-astro-cid-istevu6c]{color:#fff;text-align:left;background:#1b1c20;border-radius:16px;align-items:center;padding:.85rem 1rem;font-size:16px;transition:box-shadow .2s,background .2s,transform .2s;display:flex;box-shadow:inset 0 0 0 1px #ffffff12}.opt[data-astro-cid-istevu6c]:hover{background:#1f2330;transform:translateY(-1px);box-shadow:inset 0 0 0 1.5px #2f6bff}.qdot[data-astro-cid-istevu6c].on{background:#2f6bff}[data-astro-cid-istevu6c][data-q]:not([hidden]){animation:.4s ease-out nb-in}@keyframes nb-in{0%{opacity:0;transform:translateY(10px)}}.field[data-astro-cid-istevu6c]{color:#7aa2ff;border-bottom:1px solid #ffffff26;min-height:38px;line-height:1.2}@media (prefers-reduced-motion:reduce){.nb[data-astro-cid-istevu6c] [data-astro-cid-istevu6c],.nb[data-astro-cid-istevu6c] [data-astro-cid-istevu6c]:after{transition:none!important;animation:none!important}}