.g .pg-grind{--gr-slate:#2b3740;--gr-slate-ink:#e6ebe3;--gr-slate-mute:#bac5be;--gr-wb:#fbfaf6;--gr-wb-sheen:#ffffffa6;--gr-bezel:#26221f;--gr-mk-amber:#a8650a;--gr-margin:#b93b2573;padding-bottom:28px}:root[data-theme=dark] .g .pg-grind{--gr-slate:#1e282e;--gr-slate-ink:#e1e6de;--gr-slate-mute:#b3bdb6;--gr-wb:#dedcd3;--gr-wb-sheen:#ffffff38;--gr-bezel:#2d2824;--gr-mk-amber:#8f5508;--gr-margin:#b0371f8c}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .g .pg-grind{--gr-slate:#1e282e;--gr-slate-ink:#e1e6de;--gr-slate-mute:#b3bdb6;--gr-wb:#dedcd3;--gr-wb-sheen:#ffffff38;--gr-bezel:#2d2824;--gr-mk-amber:#8f5508;--gr-margin:#b0371f8c}}.g .pg-grind .gr-secs>:nth-child(6n+1),.g .pg-grind .gr-rail li:nth-child(6n+1),.g .pg-grind .gr-slivers i:nth-child(6n+1){--tab:var(--sky)}.g .pg-grind .gr-secs>:nth-child(6n+2),.g .pg-grind .gr-rail li:nth-child(6n+2),.g .pg-grind .gr-slivers i:nth-child(6n+2){--tab:var(--peach)}.g .pg-grind .gr-secs>:nth-child(6n+3),.g .pg-grind .gr-rail li:nth-child(6n+3),.g .pg-grind .gr-slivers i:nth-child(6n+3){--tab:var(--sage)}.g .pg-grind .gr-secs>:nth-child(6n+4),.g .pg-grind .gr-rail li:nth-child(6n+4),.g .pg-grind .gr-slivers i:nth-child(6n+4){--tab:var(--butter)}.g .pg-grind .gr-secs>:nth-child(6n+5),.g .pg-grind .gr-rail li:nth-child(6n+5),.g .pg-grind .gr-slivers i:nth-child(6n+5){--tab:var(--lilac)}.g .pg-grind .gr-secs>:nth-child(6n),.g .pg-grind .gr-rail li:nth-child(6n),.g .pg-grind .gr-slivers i:nth-child(6n){--tab:var(--pink)}.g .pg-grind .gr-diff{background:var(--d-bg);color:var(--ink);font:700 9.5px/1 var(--font-mono);letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;border-radius:3px;justify-self:start;padding:5px 7px 4px;display:inline-block}.g .pg-grind .d-easy{--d-bg:var(--sage)}.g .pg-grind .d-medium{--d-bg:var(--butter)}.g .pg-grind .d-hard{--d-bg:var(--peach);box-shadow:inset 0 0 0 1.5px var(--rust)}.g .pg-grind .gr-stamp{color:var(--rust-ink);font:800 9.5px/1 var(--font-mono);letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;border:1.5px solid;border-radius:3px;justify-self:start;align-items:center;gap:4px;padding:4px 6px 3px;display:inline-flex;transform:rotate(-2.5deg)}.g .pg-grind .gr-hero{grid-template-columns:330px minmax(0,1fr);align-items:center;gap:36px 64px;padding:6px 0 52px;display:grid}.g .pg-grind .gr-binder{width:300px;height:356px;margin:4px 0 0 6px;position:relative;transform:rotate(-1.6deg)}.g .pg-grind .gr-pages{background:repeating-linear-gradient(90deg,var(--paper-hi) 0 2px,var(--paper-line) 2px 3px);box-shadow:var(--sh-md);border-radius:3px;position:absolute;inset:9px -9px -7px 14px}.g .pg-grind .gr-slivers{flex-direction:column;gap:3px;width:22px;height:272px;display:flex;position:absolute;top:22px;right:-21px}.g .pg-grind .gr-slivers i{background:var(--tab);box-shadow:inset 1px 0 0 rgba(var(--sh-c),.18);border-radius:0 3px 3px 0;flex:1}.g .pg-grind .gr-face{color:var(--gr-slate-ink);box-shadow:var(--sh-sm);background:radial-gradient(circle at 30% 18%,#ffffff14,transparent 60%),repeating-linear-gradient(45deg,#00000012 0 2px,transparent 2px 4px),var(--gr-slate);border-radius:4px 8px 8px 4px;position:absolute;inset:0;overflow:hidden}.g .pg-grind .gr-spine{background:linear-gradient(90deg,#00000061,#0000001a 70%,#ffffff14);width:32px;position:absolute;top:0;bottom:0;left:0}.g .pg-grind .gr-rivet{background:radial-gradient(circle at 35% 35%,var(--metal-hi),var(--metal-dk));border-radius:50%;width:10px;height:10px;position:absolute;left:11px;box-shadow:0 1px 1px #00000080}.g .pg-grind .gr-rivet.r1{top:40px}.g .pg-grind .gr-rivet.r2{top:173px}.g .pg-grind .gr-rivet.r3{top:306px}.g .pg-grind .gr-label{background:var(--paper-hi);color:var(--ink);box-shadow:inset 0 0 0 1px rgba(var(--sh-c),.14),-1px 2px 0 #00000040;border-radius:2px;padding:13px 14px 12px;position:absolute;top:34px;left:54px;right:22px}.g .pg-grind .gr-label .k{font:700 10px/1.3 var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--rust-ink)}.g .pg-grind .gr-odo{white-space:nowrap;align-items:flex-end;gap:7px;margin-top:10px;display:flex}.g .pg-grind .gr-odo .dg{gap:3px;display:flex}.g .pg-grind .gr-odo .dg i{width:36px;height:54px;font:900 42px/1 var(--font-display);color:var(--lcd-ink);background:linear-gradient(180deg,#ffffff1a,transparent 40%,#00000073 49%,#ffffff0f 51%,transparent 60%),var(--lcd);border-radius:3px;place-items:center;font-style:normal;display:grid;box-shadow:inset 0 2px 5px #0009}.g .pg-grind .gr-odo .of{font:800 24px/1 var(--font-display);letter-spacing:.02em;color:var(--ink-2);padding-bottom:4px}.g .pg-grind .gr-label .s{font:700 10px/1.35 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin-top:9px}.g .pg-grind .gr-tally{font:600 10px/1.75 var(--font-mono);letter-spacing:.05em;text-transform:uppercase;color:var(--gr-slate-mute);position:absolute;bottom:22px;left:54px;right:20px}.g .pg-grind .gr-tally b{color:var(--gr-slate-ink);font-weight:800}.g .pg-grind .gr-meter,.g .pg-grind .gr-mix{background:#ffffff24;border-radius:4px;height:8px;margin:5px 0 9px;display:flex;overflow:hidden}.g .pg-grind .gr-meter i,.g .pg-grind .gr-mix i{height:100%;display:block}.g .pg-grind .gr-meter i{background:var(--t-amber);min-width:4px}.g .pg-grind .gr-mix .e{background:var(--t-sage)}.g .pg-grind .gr-mix .m{background:var(--t-amber)}.g .pg-grind .gr-mix .h{background:var(--t-rust)}.g .pg-grind .gr-intro{max-width:720px;padding:34px 38px 30px;transform:rotate(.6deg)}.g .pg-grind .gr-intro .tape{width:118px;top:-11px;left:38px;transform:rotate(-3deg)}.g .pg-grind .gr-lede{font:400 18px/1.65 var(--font-body)}.g .pg-grind .gr-lede b{font-weight:700}.g .pg-grind .gr-key{border-top:1.5px dashed var(--paper-line);font:600 10.5px/1.6 var(--font-mono);letter-spacing:.1em;color:var(--ink-2);flex-wrap:wrap;align-items:center;gap:8px 12px;margin-top:20px;padding-top:16px;display:flex}.g .pg-grind .gr-body{grid-template-columns:minmax(0,1fr) 248px;align-items:start;gap:0 10px;display:grid}.g .pg-grind .gr-secs{flex-direction:column;grid-area:1/1;gap:18px;min-width:0;display:flex}.g .pg-grind .gr-rail{scrollbar-width:thin;grid-area:1/2;max-height:calc(100vh - 32px);padding:0 8px 8px 0;position:sticky;top:16px;overflow:hidden auto}.g .pg-grind .gr-rail-k{font:700 10.5px/1.2 var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--on-wall-2);margin:2px 0 10px 4px}.g .pg-grind .gr-rail ol{flex-direction:column;gap:4px;display:flex}.g .pg-grind .gr-tab{background:var(--tab);min-height:34px;color:var(--ink);box-shadow:-1px 2px 0 rgba(var(--sh-c),.18);font:700 10.5px/1.15 var(--font-mono);letter-spacing:.04em;text-transform:uppercase;border-radius:0 8px 8px 0;grid-template-columns:24px minmax(0,1fr) auto;align-items:center;gap:6px;padding:4px 12px 4px 10px;text-decoration:none;display:grid}.g .pg-grind .gr-tab b{font:900 16px/1 var(--font-display);letter-spacing:.02em}.g .pg-grind .gr-tab small{font:600 10px/1 var(--font-mono);letter-spacing:.06em;color:var(--ink-2)}.g .pg-grind .gr-tab:focus-visible{outline-offset:-3px}.g .pg-grind .gr-sec{background:var(--paper-hi);color:var(--ink);box-shadow:var(--sh-sm);border-radius:2px 5px 5px 2px;scroll-margin-top:16px;position:relative}.g .pg-grind .gr-sec>summary{background:var(--tab);cursor:pointer;border-radius:2px 5px 0 0;grid-template-columns:42px minmax(0,1fr) auto 92px 16px;align-items:center;gap:12px;min-height:56px;padding:8px 18px 8px 42px;list-style:none;display:grid;position:relative}.g .pg-grind .gr-sec:not([open])>summary{border-radius:2px 5px 5px 2px}.g .pg-grind .gr-sec>summary::-webkit-details-marker{display:none}.g .pg-grind .gr-sec>summary:before{content:"";background:var(--wall);width:13px;height:13px;box-shadow:inset -1px 2px 2px rgba(var(--sh-c),.4);border-radius:50%;margin-top:-6.5px;position:absolute;top:50%;left:13px}.g .pg-grind .gr-sec-no{font:900 30px/1 var(--font-display);letter-spacing:.02em}.g .pg-grind .gr-sec-name{font:900 24px/1.02 var(--font-display);letter-spacing:.03em;text-transform:uppercase}.g .pg-grind .gr-sec-prog{font:700 11px/1 var(--font-mono);letter-spacing:.12em;color:var(--ink-2);white-space:nowrap}.g .pg-grind .gr-sec-bar{background:rgba(var(--sh-c),.16);border-radius:3px;height:6px;display:block;overflow:hidden}.g .pg-grind .gr-sec-bar i{background:var(--ink);height:100%;display:block}.g .pg-grind .gr-sec-car{color:var(--ink);place-items:center;display:grid}.g .pg-grind .gr-sec-car .ico{width:15px;height:15px;transform:rotate(-90deg)}.g .pg-grind .gr-sec[open] .gr-sec-car .ico{transform:none}.g .pg-grind .gr-rows{background:radial-gradient(circle at 19px 22px,var(--wall) 0 5.5px,transparent 6px) 0 0/100% 114px repeat-y, radial-gradient(circle at 18px 23.5px,rgba(var(--sh-c),.34) 0 6.3px,transparent 6.8px) 0 0/100% 114px repeat-y, linear-gradient(90deg,transparent 75px,var(--gr-margin) 75px 76.5px,transparent 76.5px);padding:3px 0 12px;position:relative}.g .pg-grind .gr-row{border-bottom:1px solid var(--paper-rule);min-height:38px;color:var(--ink);grid-template-columns:34px minmax(0,1fr) 62px 110px 14px;align-items:center;column-gap:14px;padding:3px 16px 3px 40px;text-decoration:none;display:grid}.g .pg-grind .gr-n{font:400 15px/1 var(--font-hand);color:var(--ink-2);text-align:right}.g .pg-grind .gr-t{font:500 15px/1.3 var(--font-body)}.g .pg-grind .gr-t small{font:600 10px/1 var(--font-mono);letter-spacing:.1em;color:var(--ink-2);white-space:nowrap;margin-left:8px}.g .pg-grind .gr-go{color:var(--ink-2);place-items:center;display:grid}.g .pg-grind .gr-go .ico{width:14px;height:14px}.g .pg-grind .gr-row:hover{background:linear-gradient(90deg,transparent 77px,color-mix(in srgb,var(--butter) 60%,transparent) 77px)}.g .pg-grind .gr-row:hover .gr-go{color:var(--rust-ink)}.g .pg-grind .gr-row:focus-visible{outline-offset:-3px}.g .pg-grind .gr-rows li:nth-child(3n+2) .gr-stamp{transform:rotate(1.5deg)}.g .pg-grind .gr-rows li:nth-child(4n+3) .gr-stamp{transform:rotate(-.5deg)}.g .pg-grind .gr-row.lock .gr-t{color:var(--ink-2)}.g .pg-grind .gr-block{color:var(--ink-2);font:700 9.5px/1 var(--font-mono);letter-spacing:.1em;white-space:nowrap;border:1.5px dashed;border-radius:3px;justify-self:start;padding:4px 6px 3px}.g .pg-grind .gr-credit{background:var(--manila);max-width:880px;color:var(--ink);box-shadow:var(--sh-md);border-radius:2px;margin:52px 0 0;padding:28px 30px 26px;position:relative;transform:rotate(-.4deg)}.g .pg-grind .gr-credit .tape{width:120px;top:-11px;right:46px;transform:rotate(3deg)}.g .pg-grind .gr-credit .eyebrow{color:var(--ink-2)}.g .pg-grind .gr-credit p:not(.eyebrow){max-width:78ch;font:400 15px/1.7 var(--font-body);margin-top:10px}.g .pg-grind .gr-credit b{font-weight:700}.g .pg-grind .gp-head h1{font-size:clamp(40px,5.4vw,74px);line-height:.92}.g .pg-grind .gp-meta{flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:18px;display:flex}.g .pg-grind .gp-meta .gr-diff{padding:7px 10px 6px;font-size:11px}.g .pg-grind .gp-meta .gr-stamp{color:var(--acc-wall);padding:6px 9px 5px;font-size:11px}.g .pg-grind .gp-lc{min-height:44px;font:700 11px/1.2 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--on-wall-2);text-underline-offset:4px;align-items:center;gap:6px;text-decoration:underline;text-decoration-thickness:1px;display:inline-flex}.g .pg-grind .gp-lc:hover{color:var(--acc-wall)}.g .pg-grind .gp-lc .ico{width:14px;height:14px}.g .pg-grind .gp-h{color:var(--on-wall);flex-wrap:wrap;align-items:baseline;gap:4px 16px;margin:60px 0 18px;display:flex}.g .pg-grind .gp-h>span{font:400 34px/1.05 var(--font-hand)}.g .pg-grind .gp-h small{font:700 10.5px/1.4 var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--on-wall-2)}.g .pg-grind .gp-body>.gp-h:first-child{margin-top:20px}.g .pg-grind .gp-brief{background-color:var(--paper-hi);color:var(--ink);box-shadow:var(--sh-md);background-image:linear-gradient(var(--paper-rule) 1px,transparent 1px),linear-gradient(90deg,var(--paper-rule) 1px,transparent 1px),linear-gradient(var(--paper-rule) 1px,transparent 1px),linear-gradient(90deg,var(--paper-rule) 1px,transparent 1px);background-position:-1px -1px;background-size:22px 22px,22px 22px,110px 110px,110px 110px;border-radius:2px;padding:34px 38px 38px;position:relative}.g .pg-grind .gp-brief .tape{width:130px;margin-left:-65px;top:-11px;left:50%;transform:rotate(-1.5deg)}.g .pg-grind .gp-drill{max-width:60ch;font:500 19px/1.55 var(--font-body)}.g .pg-grind .gp-drill b{font:900 1.12em/1 var(--font-display);letter-spacing:.04em;text-transform:uppercase;color:var(--rust-ink);margin-right:6px}.g .pg-grind .gp-drill .hl{background:linear-gradient(180deg,transparent 60%,color-mix(in srgb,var(--butter) 80%,transparent) 60% 94%,transparent 94%);-webkit-box-decoration-break:clone;box-decoration-break:clone}.g .pg-grind .gp-brief-grid{grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);align-items:start;gap:34px 52px;margin-top:28px;display:grid}.g .pg-grind .gp-statement p{max-width:64ch;font:400 16.5px/1.7 var(--font-body)}.g .pg-grind .gp-statement p+p{margin-top:14px}.g .pg-grind .gp-cons{border-top:1.5px dashed var(--paper-line);flex-direction:column;gap:9px;margin-top:24px;padding-top:20px;display:flex}.g .pg-grind .gp-cons li{font:400 15px/1.55 var(--font-body);padding-left:24px;position:relative}.g .pg-grind .gp-cons li:before{content:"";border:2px solid var(--rust-ink);border-radius:2px;width:11px;height:11px;position:absolute;top:.45em;left:2px;transform:rotate(-4deg)}.g .pg-grind .gp-examples{flex-direction:column;gap:20px;display:flex}.g .pg-grind .gex{background-color:var(--paper-hi);box-shadow:var(--sh-sm);background-image:linear-gradient(var(--paper-hi) 0 36px,transparent 36px),linear-gradient(transparent 36px,var(--gr-margin) 36px 38px,transparent 38px),repeating-linear-gradient(180deg,transparent 0 23px,var(--paper-rule) 23px 24px);background-position:0 0,0 0,0 38px;border-radius:3px;padding:0 0 12px;position:relative;transform:rotate(-.6deg)}.g .pg-grind .gex:nth-child(2n){transform:rotate(.5deg)}.g .pg-grind .gex-no{height:36px;font:800 10.5px/1 var(--font-mono);letter-spacing:.18em;color:var(--rust-ink);align-items:center;padding:0 16px;display:flex}.g .pg-grind .gex-body{font:500 13px/24px var(--font-mono);overflow-wrap:anywhere;padding:0 16px}.g .pg-grind .gex-out{color:var(--rust-ink);font-weight:800}.g .pg-grind .gex-note{font:400 17px/24px var(--font-hand);color:var(--ink-2)}.g .pg-grind .gp-hints{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:24px;display:grid}.g .pg-grind .gp-hint{background:var(--note);color:var(--ink);box-shadow:var(--sh-sm);border-radius:2px;position:relative;transform:rotate(-.8deg)}.g .pg-grind .gp-hint:first-child{--note:var(--butter)}.g .pg-grind .gp-hint:nth-child(2){--note:var(--peach);transform:rotate(.5deg)}.g .pg-grind .gp-hint:nth-child(3){--note:var(--pink);transform:rotate(-.3deg)}.g .pg-grind .gp-hint:not([open]){background-image:linear-gradient(180deg,transparent calc(50% - 1px),rgba(var(--sh-c),.13) calc(50% - 1px) 50%,#fff6 50% calc(50% + 1px),transparent calc(50% + 1px))}.g .pg-grind .gp-hint:before{content:"";background:linear-gradient(225deg,var(--wall) 50%,transparent 50%);pointer-events:none;width:24px;height:24px;position:absolute;top:0;right:0}.g .pg-grind .gp-hint:after{content:"";background:linear-gradient(225deg,transparent 50%,color-mix(in srgb,var(--note) 80%,var(--ink) 20%) 50%);width:24px;height:24px;filter:drop-shadow(-1px 1px 1px rgba(var(--sh-c),.3));pointer-events:none;position:absolute;top:0;right:0}.g .pg-grind .gp-hint>summary{cursor:pointer;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 12px;min-height:76px;padding:16px 20px 16px 18px;list-style:none;display:grid}.g .pg-grind .gp-hint>summary::-webkit-details-marker{display:none}.g .pg-grind .gp-hint-l b{font:900 26px/1 var(--font-display);letter-spacing:.03em;text-transform:uppercase;display:block}.g .pg-grind .gp-hint-l span{font:700 10.5px/1.35 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-top:6px;display:block}.g .pg-grind .gp-unfold{border:1.5px solid var(--ink-2);width:30px;height:30px;font:700 16px/1 var(--font-mono);color:var(--ink);border-radius:50%;place-items:center;display:grid}.g .pg-grind .gp-hint[open] .gp-unfold{transform:rotate(45deg)}.g .pg-grind .gp-hint p{font:400 15.5px/1.62 var(--font-body);padding:0 20px 20px 18px}.g .pg-grind .gboard{background:linear-gradient(160deg,var(--metal-hi),var(--metal) 45%);box-shadow:var(--sh-md);border-radius:10px;padding:10px;position:relative}.g .pg-grind .gb-surface{color:var(--ink);box-shadow:inset 0 1px 3px 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