:root{--xcanvas:#ffffff;--xpanel:#ffffff;--xtype:#203b2f;--xquiet:#4d6055;--xmain:#2d6a4f;--xpop:#e9c46a;--xline:#cdd9d1;--xradius:4px;--xpage:1080px;--xdisplay:'Merriweather',system-ui,sans-serif;--xtext-font:'Merriweather',system-ui,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:5rem} body{margin:0;background:var(--xcanvas);color:var(--xtype);font:16px/1.78 var(--xtext-font)}
img{max-width:100%;height:auto} a{color:var(--xmain);text-underline-offset:3px}
input,select,textarea{max-width:100%;box-sizing:border-box}
input[type=date],input[type=time],input[type=datetime-local],input[type=month],input[type=week]{min-width:0;max-width:100%}
@supports (-webkit-touch-callout:none){input[type=date],input[type=time],input[type=datetime-local],input[type=month],input[type=week]{-webkit-appearance:none;appearance:none;min-height:2.75em} input::-webkit-date-and-time-value{text-align:left}}
h1,h2,h3{font-family:var(--xdisplay);line-height:1.2;letter-spacing:-.01em;color:var(--xtype)}
h1{font-size:clamp(1.9rem,4.5vw,2.8rem);margin:.2em 0 .35em} h2{font-size:clamp(1.35rem,3vw,1.8rem);margin:2.75em 0 .6em} h3{font-size:1.15rem;margin:1.6em 0 .4em}
p,ul,ol{margin:0 0 1.25em}
.ch-shell{max-width:var(--xpage);margin:0 auto;padding:0 1rem} .ch-core{max-width:var(--xpage);margin:0 auto;padding:1.2rem 1rem 3rem}
.ch-skip{position:absolute;left:-9999px} .ch-skip:focus{left:1rem;top:1rem;background:var(--xpanel);padding:.5rem;z-index:99}
.ch-masthead__in{max-width:var(--xpage);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 1rem;flex-wrap:wrap}
.ch-home-link{display:flex;align-items:center;gap:.6rem;font:800 1.15rem var(--xdisplay);color:var(--xtype);text-decoration:none}
.ch-links{display:flex;gap:1rem;flex-wrap:wrap;align-items:center} .ch-links a{color:var(--xtype);text-decoration:none;font-weight:600;font-size:.95rem}
.ch-header-bar{background:var(--xcanvas);border-bottom:1px solid var(--xline)} .ch-masthead__in{flex-direction:column;gap:.4rem;padding:.9rem 1rem}  .ch-links a{border-bottom:2px solid transparent;padding-bottom:2px} .ch-links a:hover,.ch-links a[aria-current]{border-color:var(--xmain)}
.ch-intro{margin:1rem 0 1.4rem} .ch-subhead{font-size:1.12rem;max-width:46em;color:var(--xquiet)} 
.ch-panel-app{margin:1.4rem 0 2rem}
.ch-hint-box{margin:1.4em 0;padding:.9em 1.1em;background:var(--xpanel);border-left:4px solid var(--xpop);border-radius:0 var(--xradius) var(--xradius) 0}
.ch-formula-box{margin:1.2em 0;padding:.9em 1.1em;font-family:ui-monospace,Consolas,monospace;background:var(--xpanel);border:1px dashed var(--xmain);border-radius:var(--xradius);overflow-x:auto}
.ch-data-wrap{margin:1.2em 0;overflow-x:auto;border:1px solid var(--xline);border-radius:var(--xradius);background:var(--xpanel)}
.ch-facts{width:100%;border-collapse:collapse;font-size:.95em;font-variant-numeric:tabular-nums} .ch-facts th,.ch-facts td{padding:.5em .75em;border-bottom:1px solid var(--xline);text-align:left}
.ch-facts thead th{background:color-mix(in srgb,var(--xline) 60%,var(--xpanel))}
ol.ch-step-list{padding-left:1.3em} ol.ch-step-list>li{margin:.5em 0}
.ch-visual{margin:1.6em 0;text-align:center} .ch-visual img{width:100%;max-width:720px;border-radius:var(--xradius);border:1px solid var(--xline);background:#fff} .ch-visual figcaption{font-size:.9em;color:var(--xquiet)}
.ch-card-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem;margin:1.2em 0}
.ch-tile{display:block;padding:1.1rem;background:var(--xpanel);border-radius:var(--xradius);background:color-mix(in srgb,var(--xline) 45%,var(--xpanel));border:1px solid transparent;color:var(--xtype);text-decoration:none}
.ch-tile b{display:block;font-family:var(--xdisplay);margin-bottom:.35rem} .ch-tile span{color:var(--xquiet);font-size:.92rem} .ch-tile:hover{border-color:var(--xmain)}
.ch-tile--img{padding:0;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease} .ch-tile--img:hover{transform:translateY(-3px);box-shadow:0 10px 24px color-mix(in srgb,var(--xtype) 14%,transparent)}
.ch-read__img{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover} .ch-tile__txt{display:block;padding:1rem 1.1rem 1.1rem} .ch-tile__txt>span{display:block}
.ch-blist a,.ch-brow,.ch-post__kicker{background:none!important}
.ch-link-card__meta{display:block;margin-top:.6rem;font-size:.8rem;font-weight:700;letter-spacing:.04em;color:var(--xmain)}
.ch-card-list--feat{grid-template-columns:repeat(2,minmax(0,1fr))} .ch-card-list--feat>.ch-tile:first-child{grid-column:1/-1;display:grid;grid-template-columns:1.3fr 1fr;align-items:center} .ch-card-list--feat>.ch-tile:first-child b{font-size:1.35rem}
.ch-blist{display:grid;gap:1rem;margin:1.2em 0} .ch-brow{display:grid;grid-template-columns:240px 1fr;gap:1.1rem;align-items:center;background:var(--xpanel);border:1px solid var(--xline);border-radius:var(--xradius);overflow:hidden;color:var(--xtype);text-decoration:none}
.ch-brow .ch-read__img{height:100%;aspect-ratio:auto;min-height:126px} .ch-brow b{display:block;font-family:var(--xdisplay);font-size:1.12rem;margin-bottom:.3rem} .ch-brow .ch-tile__txt>span{color:var(--xquiet);font-size:.93rem} .ch-brow:hover{border-color:var(--xmain)}
.ch-blist--min{list-style:none;padding:0;counter-reset:bl;gap:0} .ch-blist--min li{counter-increment:bl;border-top:1px solid var(--xline)} .ch-blist--min li:last-child{border-bottom:1px solid var(--xline)}
.ch-blist--min a{display:grid;grid-template-columns:4.2rem 1fr;column-gap:1rem;padding:1.1rem .2rem;color:var(--xtype);text-decoration:none} .ch-blist--min a::before{content:counter(bl,decimal-leading-zero);grid-row:1/4;font:800 2.4rem/1 var(--xdisplay);color:var(--xmain)}
.ch-blist--min b{font-family:var(--xdisplay);font-size:1.15rem} .ch-blist--min span{color:var(--xquiet);font-size:.93rem} .ch-blist--min a:hover b{color:var(--xmain)}
.ch-post__head--overlay{position:relative;margin:.6rem 0 1.6rem;border-radius:var(--xradius);overflow:hidden} .ch-post__head--overlay>img{display:block;width:100%;height:auto;min-height:300px;object-fit:cover}
.ch-post__ov{position:absolute;inset:auto 0 0 0;padding:4rem 1.6rem 1.4rem;background:linear-gradient(transparent,color-mix(in srgb,#000 72%,transparent))} .ch-post__ov h1,.ch-post__ov .ch-post__meta,.ch-post__ov .ch-post__kicker{color:#fff}
.ch-post__head--band{background:var(--xmain);color:#fff;padding:2.2rem 1.6rem;border-radius:var(--xradius)} .ch-post__head--band h1,.ch-post__head--band .ch-post__meta,.ch-post__head--band .ch-post__kicker{color:#fff}
.ch-post__head--split{display:grid;grid-template-columns:1.1fr 1fr;gap:1.6rem;align-items:center} .ch-post__head--split .ch-post__cover{margin:0}
.ch-on-this-page--chips ol{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:.45rem} .ch-on-this-page--chips li{margin:0} .ch-on-this-page--chips a{display:inline-block;padding:.3rem .75rem;border:1px solid var(--xline);border-radius:999px;background:var(--xcanvas);text-decoration:none;font-size:.88rem}
.ch-on-this-page--rail{background:none;border:0;border-left:3px solid var(--xpop);border-radius:0;padding:.2rem 0 .2rem 1rem}
.ch-language--globe summary{display:flex;align-items:center;gap:.35rem} .ch-langpills{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.8rem} .ch-langpills a{padding:.25rem .7rem;border:1px solid var(--xline);border-radius:999px;text-decoration:none} .ch-langpills a[aria-current]{background:var(--xmain);border-color:var(--xmain);color:#fff}
@media (max-width:700px){.ch-card-list--feat{grid-template-columns:1fr} .ch-card-list--feat>.ch-tile:first-child{display:flex} .ch-brow{grid-template-columns:1fr} .ch-brow .ch-read__img{min-height:0;aspect-ratio:1200/630} .ch-post__head--split{grid-template-columns:1fr} .ch-post__ov{position:static;background:var(--xmain);padding:1.2rem} .ch-post__head--overlay>img{min-height:0}}
.ch-post{max-width:48rem;margin:0 auto} .ch-post__head{margin:.6rem 0 1.2rem} .ch-post__head h1{font-size:clamp(2rem,5vw,3rem);line-height:1.12;letter-spacing:-.01em}
.ch-post__kicker{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--xmain);text-decoration:none}
.ch-upd{color:var(--xquiet);font-size:.9rem;margin:2rem 0 0} .ch-sign{font-style:italic;color:var(--xquiet)} .ch-post__meta{color:var(--xquiet);font-size:.92rem;margin:0} .ch-post__cover{margin:0 0 1.6rem} .ch-post__cover img{display:block;width:100%;height:auto;border-radius:var(--xradius)}
.ch-post .ch-subhead{font-size:1.2rem;color:var(--xtype)} .ch-post .ch-subhead::first-letter{font-family:var(--xdisplay);font-size:3.1em;float:left;line-height:.9;margin:.06em .1em 0 0;color:var(--xmain)}
.ch-post .ch-on-this-page--post{position:static!important;top:auto!important;z-index:auto;margin:0 0 1.8rem;padding:1rem 1.2rem;background:var(--xpanel);border:1px solid var(--xline);border-left:4px solid var(--xmain);border-radius:var(--xradius);font-size:.95rem}
.ch-on-this-page--post ol{margin:.4rem 0 0;padding-left:1.2rem;columns:1} .ch-on-this-page--post li{margin:.2rem 0}
.ch-post h3{color:var(--xmain)} .ch-post blockquote{margin:1.4em 0;padding:.4em 1.2em;border-left:4px solid var(--xpop);font-size:1.1em}
.ch-questions h3{font-size:1.05rem;margin-top:1.3em}
.ch-path{font-size:.88rem;color:var(--xquiet);margin:.4rem 0 1rem} .ch-path a{color:var(--xquiet)}
.ch-next-step{margin:2.4rem 0;padding:1.4rem;background:var(--xpanel);border-radius:var(--xradius);background:color-mix(in srgb,var(--xline) 45%,var(--xpanel));border:1px solid transparent;text-align:center}
.ch-pill-btn{display:inline-block;padding:.7em 1.4em;background:var(--xmain);color:#fff;border-radius:999px;font-weight:700;text-decoration:none}
.ch-footer{border-top:1px solid var(--xline);margin-top:3rem;padding:1.6rem 0 2.4rem;font-size:.9rem;color:var(--xquiet);background:var(--xpanel)}
.ch-footer nav{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem} .ch-footer a{color:var(--xquiet)} .ch-footer{background:var(--xtype);color:var(--xcanvas)} .ch-footer a,.ch-footer p{color:var(--xcanvas);opacity:.85}

.ch-on-this-page{margin:1.2rem 0;padding:.8rem 1rem;background:var(--xpanel);border-radius:var(--xradius);border:1px solid var(--xline)} .ch-on-this-page ol{margin:.3rem 0 0;padding-left:1.2rem;columns:2;column-gap:2rem} @media(max-width:640px){.ch-on-this-page ol{columns:1}}
.ch-language{position:relative} .ch-language summary{cursor:pointer;list-style:none;padding:.25rem .6rem;border:1px solid var(--xline);border-radius:999px;font-size:.85rem}
.ch-langs__list{position:absolute;right:0;top:120%;background:var(--xpanel);border:1px solid var(--xline);border-radius:10px;padding:.4rem;display:grid;min-width:9rem;z-index:40}
.ch-langs__list a{padding:.3rem .5rem;text-decoration:none;color:var(--xtype)} .ch-langs__list a[aria-current]{font-weight:700;color:var(--xmain)}
.ch-codes{display:flex;gap:.35rem;font-size:.8rem;font-weight:700} .ch-codes a{text-decoration:none;color:var(--xquiet);padding:.1rem .3rem;border-radius:4px} .ch-codes a[aria-current]{color:var(--xmain);background:color-mix(in srgb,var(--xmain) 12%,transparent)}
[data-zone]{margin:1rem auto;text-align:center;overflow:hidden;max-width:100%} [data-zone]:empty{margin:0}
[data-zone="mobile_sticky"]{position:fixed;left:0;right:0;bottom:0;margin:0;z-index:50;background:var(--xpanel)}
[data-zone="sidebar_left"],[data-zone="sidebar_right"]{position:fixed;top:110px;width:160px;margin:0;z-index:20} [data-zone="sidebar_left"]{left:12px} [data-zone="sidebar_right"]{right:12px}
@media (max-width:1499px){[data-zone="sidebar_left"],[data-zone="sidebar_right"]{display:none}}
.ch-adx{float:right;border:0;background:transparent;font-size:1.2rem;cursor:pointer;color:var(--xquiet)}
.ch-pill-btn{border-radius:4px;text-transform:uppercase;letter-spacing:.06em;font-size:.85rem}
.ch-data-wrap{border:0;border-top:3px solid var(--xmain);border-radius:0;background:transparent} .ch-facts thead th{background:transparent;text-transform:uppercase;font-size:.78rem;letter-spacing:.06em}
.ch-part a:not(.ch-pill-btn):not(.ch-tile){text-decoration:none;background:linear-gradient(transparent 62%,color-mix(in srgb,var(--xpop) 35%,transparent) 0)}
:root{--xdisplay:'Merriweather',Georgia,'Times New Roman',serif;--xtext-font:'Merriweather',Georgia,'Times New Roman',serif} body{font-size:18px;font-kerning:normal;font-optical-sizing:auto;text-rendering:optimizeLegibility} h1,h2,h3{font-weight:700;letter-spacing:0;text-wrap:balance} .ch-home-link{font-weight:700} h1{font-size:clamp(1.85rem,4.6vw,2.79rem);line-height:1.08} h2{font-size:clamp(1.3rem,3vw,1.78rem);line-height:1.18} h3{font-size:1.33rem} .ch-post__head h1{font-size:clamp(1.95rem,5vw,2.96rem)} p,li{text-wrap:pretty} .ch-part>p,.ch-part>ul,.ch-part>ol,.ch-post p,.ch-post li{max-width:68ch} .ch-facts,.ch-panel-app output,.ch-panel-app [class*=res],.ch-panel-app [class*=val]{font-variant-numeric:tabular-nums lining-nums}  
@media (max-width:640px){.ch-masthead__in{justify-content:center} .ch-links{justify-content:center}}

/* Grammar checker workspace — E · Editorial: a proofreading desk with a white sheet, wavy underlines and correction cards in the margin. */
.gc{--gc-sp:#c0392b;--gc-sp-t:#a12a1e;--gc-gr:#d4a017;--gc-gr-t:#7a5900;--gc-st:#2f6fb0;--gc-st-t:#245a92;--gc-ok:#1f7a4d;--gc-desk:color-mix(in srgb,var(--xmain) 8%,#ffffff);--gc-paper:color-mix(in srgb,var(--xpop) 10%,#ffffff);--gc-flash:color-mix(in srgb,var(--xpop) 55%,transparent);
 position:relative;margin:0 0 3.5rem;background:var(--gc-desk);border:1px solid color-mix(in srgb,var(--xmain) 24%,#ffffff);border-radius:12px;box-shadow:0 18px 40px -18px color-mix(in srgb,var(--xtype) 40%,transparent),0 2px 6px color-mix(in srgb,var(--xtype) 8%,transparent);font-family:var(--xtext-font);color:var(--xtype);text-align:left}
.gc *,.gc *::before,.gc *::after{box-sizing:border-box}
.gc [hidden]{display:none!important}
.gc-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.gc button{font-family:var(--xtext-font);cursor:pointer}
.gc button:focus-visible,.gc select:focus-visible,.gc a:focus-visible{outline:3px solid var(--xpop);outline-offset:2px}
/* header strip of the workspace */
.gc-bar{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 24px;padding:16px 24px 18px;background:var(--xmain);color:#ffffff;border-radius:11px 11px 0 0}
.gc-title{margin:0;font:700 23px/1.3 var(--xdisplay);color:#ffffff;letter-spacing:0;display:flex;align-items:center;gap:10px}
.gc-title::before{content:"";width:26px;height:10px;flex:0 0 26px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 26 10'%3E%3Cpath d='M1 6q3-5 6 0t6 0t6 0t6 0' fill='none' stroke='%23e9c46a' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat}
.gc-opts{display:flex;flex-wrap:wrap;gap:12px}
.gc-field{display:flex;flex-direction:column;gap:4px;min-width:170px}
.gc-field label{font-size:15px;line-height:1.4;color:color-mix(in srgb,#ffffff 88%,var(--xmain));font-weight:400}
.gc-field select{height:44px;padding:0 36px 0 12px;font:400 16px/1.2 var(--xtext-font);color:var(--xtype);background:#ffffff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%232d6a4f' stroke-width='2'/%3E%3C/svg%3E") right 12px center/12px 8px no-repeat;border:0;border-radius:6px;appearance:none;-webkit-appearance:none;max-width:100%;transition:box-shadow .15s}
.gc-field select:hover{box-shadow:0 0 0 3px color-mix(in srgb,var(--xpop) 60%,transparent)}
/* body: sheet + margin */
.gc-body{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;padding:24px}
.gc-main{min-width:0}
.gc-doc{position:relative}
.gc-sheet{position:relative;display:grid;background:#ffffff;border:1px solid var(--xline);border-radius:4px;box-shadow:0 1px 0 var(--xline),0 10px 24px -14px color-mix(in srgb,var(--xtype) 35%,transparent);transition:box-shadow .2s,border-color .2s}
.gc-sheet::before{content:"";position:absolute;left:42px;top:0;bottom:0;width:2px;background:color-mix(in srgb,var(--xpop) 70%,#ffffff);pointer-events:none}
.gc-sheet:focus-within{border-color:var(--xmain);box-shadow:0 0 0 3px color-mix(in srgb,var(--xmain) 22%,transparent),0 10px 24px -14px color-mix(in srgb,var(--xtype) 35%,transparent)}
/* the textarea and the underline layer share one grid cell and identical metrics: the layer draws marks only, never visible text */
.gc-back,.gc-input{grid-area:1/1;margin:0;padding:24px 30px 28px 62px;min-height:250px;width:100%;font:400 17px/1.9 var(--xtext-font);letter-spacing:0;word-spacing:0;white-space:pre-wrap;overflow-wrap:break-word;word-break:normal;tab-size:4;text-transform:none;text-indent:0;border:0;border-radius:4px}
.gc-back{color:transparent;pointer-events:none;user-select:none;z-index:0;overflow:hidden}
.gc-input{position:relative;z-index:1;display:block;height:100%;background:transparent;color:var(--xtype);caret-color:var(--xmain);resize:none;overflow:hidden;outline:none;-webkit-text-fill-color:var(--xtype)}
.gc-input::placeholder{color:color-mix(in srgb,var(--xquiet) 85%,#ffffff);-webkit-text-fill-color:color-mix(in srgb,var(--xquiet) 85%,#ffffff);font-style:italic}
.gc-input.is-over-mark{cursor:pointer}
.gc-hl{--c:var(--gc-gr);border-radius:2px;background:color-mix(in srgb,var(--c) 13%,transparent);text-decoration:underline wavy var(--c);text-decoration-thickness:1.6px;text-underline-offset:5px;text-decoration-skip-ink:none;transition:background-color .2s}
.gc-hl.is-active{background:color-mix(in srgb,var(--c) 30%,transparent)}
.gc-hl--zero{position:relative}
.gc-hl--zero::after{content:"";position:absolute;left:-1px;top:.25em;height:1.3em;width:3px;border-radius:2px;background:var(--c)}
.gc-fix{border-radius:2px;background:color-mix(in srgb,var(--gc-ok) 22%,transparent);animation:gc-fade 1.4s ease-out forwards}
.gc-hl--spelling,.gc-card--spelling,[data-filter="spelling"],.gc-key--spelling{--c:var(--gc-sp);--ct:var(--gc-sp-t)}
.gc-hl--grammar,.gc-card--grammar,[data-filter="grammar"],.gc-key--grammar{--c:var(--gc-gr);--ct:var(--gc-gr-t)}
.gc-hl--style,.gc-card--style,[data-filter="style"],.gc-key--style{--c:var(--gc-st);--ct:var(--gc-st-t)}
[data-filter="all"]{--c:var(--xmain);--ct:var(--xmain)}
/* popover card next to an underline */
.gc-pop{position:absolute;z-index:6;max-width:calc(100% - 16px);background:#ffffff;border:1px solid var(--xline);border-radius:8px;box-shadow:0 18px 40px -10px color-mix(in srgb,var(--xtype) 45%,transparent)}
.gc-pop .gc-card{border:0;box-shadow:none;animation:none;border-radius:8px}
.gc-pop-close{position:absolute;right:4px;top:4px;z-index:1;width:44px;height:44px;border:0;background:none;color:var(--xquiet);font-size:24px;line-height:1;border-radius:6px}
.gc-pop-close:hover{background:var(--gc-desk);color:var(--xtype)}
/* under the sheet */
.gc-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 16px;margin-top:16px}
.gc-stats{margin:0;font-size:15px;line-height:1.5;color:var(--xquiet);font-variant-numeric:tabular-nums}
.gc-size{margin-left:.4em;padding-left:.6em;border-left:1px solid var(--xline)}
.gc-size.is-over{color:var(--gc-sp-t);font-weight:700}
.gc-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.gc-primary{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 30px;font:700 17px/1.2 var(--xtext-font);color:#ffffff;background:var(--xmain);border:0;border-radius:6px;box-shadow:0 3px 0 color-mix(in srgb,var(--xmain) 55%,#000000);transition:background-color .15s,transform .1s,box-shadow .1s}
.gc-primary:hover{background:color-mix(in srgb,var(--xmain) 85%,#000000)}
.gc-primary:active{transform:translateY(2px);box-shadow:0 1px 0 color-mix(in srgb,var(--xmain) 55%,#000000)}
.gc-primary:disabled{cursor:progress;opacity:.92}
.gc-primary.is-busy::before{content:"";width:16px;height:16px;border:2.5px solid color-mix(in srgb,#ffffff 35%,transparent);border-top-color:#ffffff;border-radius:50%;animation:gc-spin .8s linear infinite}
.gc-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;font:700 15px/1.2 var(--xtext-font);color:var(--xmain);background:#ffffff;border:1px solid color-mix(in srgb,var(--xmain) 40%,#ffffff);border-radius:6px;transition:background-color .15s,border-color .15s,color .15s}
.gc-btn:hover:not(:disabled){background:color-mix(in srgb,var(--xmain) 8%,#ffffff);border-color:var(--xmain)}
.gc-btn:disabled{color:color-mix(in srgb,var(--xquiet) 70%,#ffffff);border-color:var(--xline);cursor:default}
.gc-btn.is-done{background:var(--gc-ok);border-color:var(--gc-ok);color:#ffffff}
.gc-btn--quiet{background:transparent;border-color:transparent;text-decoration:underline;text-underline-offset:3px;font-weight:400;padding:0 10px}
.gc-btn--quiet:hover:not(:disabled){background:transparent;border-color:transparent;text-decoration-thickness:2px}
.gc-summary{margin:12px 0 0;padding:9px 12px;font-size:16px;line-height:1.5;font-weight:700;color:var(--xtype);background:#ffffff;border-left:4px solid var(--xpop);border-radius:4px}
.gc-summary:empty{display:none}
.gc-summary.is-clean{border-left-color:var(--gc-ok);color:var(--gc-ok)}
.gc-notice{margin:16px 0 4px;font-size:15px;line-height:1.65;color:var(--xtype)}
.gc-notice a,.gc-guide{color:var(--xmain);text-decoration:underline;text-underline-offset:3px}
.gc-limits{margin:0;font-size:15px;line-height:1.6;color:var(--xquiet)}
/* error and notice boxes */
.gc-alert{display:flex;align-items:flex-start;gap:12px;margin:0 0 14px;padding:12px 14px;background:#fdf0ee;border:1px solid #f1c6bf;border-left:4px solid var(--gc-sp);border-radius:6px;color:#5d1c13}
.gc-alert[data-kind="needText"],.gc-alert[data-kind="cooldown"],.gc-alert[data-kind="hour"]{background:var(--gc-paper);border-color:color-mix(in srgb,var(--xpop) 70%,#ffffff);border-left-color:var(--gc-gr);color:var(--xtype)}
.gc-alert svg{flex:0 0 22px;margin-top:2px;color:var(--gc-sp)}
.gc-alert[data-kind="needText"] svg,.gc-alert[data-kind="cooldown"] svg,.gc-alert[data-kind="hour"] svg{color:var(--gc-gr-t)}
.gc-alert>div{flex:1 1 auto;min-width:0}
.gc-alert strong{display:block;font-size:16px;line-height:1.4}
.gc-alert p{margin:2px 0 0;font-size:15px;line-height:1.55}
.gc-alert .gc-btn{flex:0 0 auto}
/* margin column */
.gc-side{min-width:0;display:flex;flex-direction:column;gap:12px}
.gc-side-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding-bottom:8px;border-bottom:2px solid var(--xtype)}
.gc-side-head h3{margin:0;font:700 20px/1.3 var(--xdisplay);color:var(--xtype)}
.gc-total{margin:0;font-size:15px;color:var(--xquiet);text-align:right}
.gc-count{font:700 30px/1 var(--xdisplay);color:var(--xtype);font-variant-numeric:tabular-nums;margin-right:2px}
.gc-filters{display:flex;flex-wrap:wrap;gap:6px}
.gc-filters button{display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:0 12px;font-size:15px;color:var(--xtype);background:#ffffff;border:1px solid var(--xline);border-radius:999px;transition:background-color .15s,border-color .15s}
.gc-filters button:hover:not(:disabled){border-color:var(--c)}
.gc-filters button[aria-pressed="true"]{border-color:var(--c);background:color-mix(in srgb,var(--c) 12%,#ffffff);font-weight:700}
.gc-filters button:disabled{cursor:default;opacity:.75}
.gc-dot{width:10px;height:10px;border-radius:50%;background:var(--c);flex:0 0 10px}
.gc-n{min-width:24px;padding:1px 7px;border-radius:999px;background:color-mix(in srgb,var(--c) 16%,#ffffff);font-weight:700;font-size:14px;text-align:center;font-variant-numeric:tabular-nums}
.gc-checked{margin:0;font-size:15px;color:var(--xquiet)}
.gc-checked:empty{display:none}
.gc-stale{padding:10px 12px;background:var(--gc-paper);border-left:4px solid var(--xpop);border-radius:4px}
.gc-stale p{margin:0 0 8px;font-size:15px;line-height:1.55}
.gc-acceptall{min-height:48px;padding:8px 14px;font:700 16px/1.3 var(--xtext-font);color:var(--xtype);background:var(--xpop);border:0;border-radius:6px;box-shadow:0 2px 0 color-mix(in srgb,var(--xpop) 55%,#000000);transition:background-color .15s,transform .1s}
.gc-acceptall:hover{background:color-mix(in srgb,var(--xpop) 85%,#000000)}
.gc-acceptall:active{transform:translateY(2px)}
.gc-empty,.gc-done{padding:4px 0 6px}
.gc-art{display:block;width:150px;height:auto;margin:4px 0 10px}
.gc-empty-title{margin:0 0 8px;font:700 18px/1.4 var(--xdisplay);color:var(--xtype)}
.gc-steps{margin:0 0 12px;padding:0;list-style:none;counter-reset:gc}
.gc-steps li{position:relative;counter-increment:gc;padding:0 0 8px 36px;font-size:16px;line-height:1.55}
.gc-steps li::before{content:counter(gc);position:absolute;left:0;top:0;width:26px;height:26px;border-radius:50%;background:var(--xmain);color:#ffffff;font:700 14px/26px var(--xtext-font);text-align:center}
.gc-legend{margin:0;font-size:15px;line-height:2;color:var(--xquiet)}
.gc-key{color:var(--xtype);margin-right:8px;text-decoration:underline wavy var(--c);text-decoration-thickness:1.6px;text-underline-offset:5px;text-decoration-skip-ink:none}
.gc-done{text-align:center;color:var(--gc-ok)}
.gc-done p{margin:0 0 12px;font-size:16px;line-height:1.6;color:var(--xtype)}
.gc-done svg{display:block;margin:4px auto 8px}
.gc-tick{stroke-dasharray:44;stroke-dashoffset:44;animation:gc-tick .6s .15s ease-out forwards}
.gc-done .gc-primary{width:100%}
/* cards */
.gc-list{display:flex;flex-direction:column;gap:10px}
.gc-list:empty{display:none}
.gc-list>.gc-hint{margin:0;font-size:15px;color:var(--xquiet)}
.gc-card{background:#ffffff;border:1px solid var(--xline);border-left:4px solid var(--c);border-radius:6px;transition:box-shadow .15s,border-color .15s}
.gc-card.is-new{animation:gc-in .28s ease-out both}
.gc-card:not(.is-open):hover{box-shadow:0 4px 14px -6px color-mix(in srgb,var(--xtype) 35%,transparent)}
.gc-card.is-open{box-shadow:0 8px 22px -10px color-mix(in srgb,var(--xtype) 40%,transparent);padding-bottom:14px}
.gc-card-head{display:flex;flex-direction:column;align-items:flex-start;gap:3px;width:100%;margin:0;padding:10px 14px;background:none;border:0;text-align:left;color:var(--xtype);font:inherit}
.gc-pop .gc-card-head{padding-right:46px}
.gc-cat{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:700;color:var(--ct)}
.gc-short{font-size:15px;line-height:1.45;color:var(--xquiet)}
.gc-change{font-size:18px;line-height:1.5;overflow-wrap:anywhere}
.gc-card del,.gc-ctx del{color:var(--gc-sp-t);text-decoration:line-through;text-decoration-thickness:1.5px}
.gc-card ins{color:var(--gc-ok);font-weight:700;text-decoration:none;background:color-mix(in srgb,var(--gc-ok) 11%,#ffffff);padding:0 4px;border-radius:3px}
.gc-arrow{margin:0 8px;color:var(--xquiet)}
.gc-del{font-style:italic;color:var(--xquiet)}
.gc-quote{font-weight:700}
.gc-ctx{margin:2px 14px 8px;padding:8px 10px;font-size:15px;line-height:1.6;background:var(--gc-paper);border-radius:4px;overflow-wrap:anywhere}
.gc-ctx ins{margin-left:3px}
.gc-msg{margin:0 14px 12px;font-size:15px;line-height:1.6;color:var(--xtype)}
.gc-card-actions{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin:0 14px}
.gc-accept{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:0 24px;font:700 16px/1.2 var(--xtext-font);color:#ffffff;background:var(--xmain);border:0;border-radius:6px;transition:background-color .15s,transform .1s}
.gc-accept::before{content:"";width:14px;height:10px;border-left:3px solid currentColor;border-bottom:3px solid currentColor;transform:rotate(-45deg) translate(1px,-2px)}
.gc-accept:hover{background:color-mix(in srgb,var(--xmain) 85%,#000000)}
.gc-accept:active{transform:scale(.97)}
.gc-ignore{min-height:44px;padding:0 6px;font-size:15px;color:var(--xquiet);background:none;border:0;text-decoration:underline;text-underline-offset:3px}
.gc-ignore:hover{color:var(--xtype)}
.gc-alts{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:10px 14px 0}
.gc-alts-label{font-size:15px;color:var(--xquiet)}
.gc-alt{min-height:44px;padding:0 10px;font-size:15px;color:var(--xtype);background:#ffffff;border:1px solid var(--xline);border-radius:4px;transition:border-color .15s}
.gc-alt:hover{border-color:var(--xmain)}
.gc-card>.gc-hint{margin:8px 14px 0;font-size:15px;color:var(--xquiet)}
.gc:not(.has-text) .gc-tools,.gc:not(.is-checked) .gc-count{display:none}
.gc-tools{display:flex;flex-wrap:wrap;gap:8px;padding-top:12px;border-top:1px solid var(--xline)}
.gc-done:not([hidden])~.gc-tools #gc-copy{display:none}
.gc-status{margin:0;min-height:1.5em;font-size:15px;line-height:1.5;color:var(--xmain)}
.gc-fallback label{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.gc-fallback textarea{width:100%;font:15px/1.5 var(--xtext-font);padding:8px;border:1px solid var(--xline);border-radius:4px}
.gc-guide{font-size:15px}
@media(min-width:900px){
 .gc-list{max-height:640px;overflow:auto;padding:2px 4px 6px 2px;margin:0 -4px 0 -2px;overscroll-behavior:contain}
}
@media(max-width:899px){
 .gc-body{grid-template-columns:minmax(0,1fr);gap:22px}
 .gc-side{padding-top:6px}
}
@media(max-width:600px){
 .gc{margin-left:-8px;margin-right:-8px;border-radius:10px}
 .gc-bar{padding:14px 14px 16px;border-radius:9px 9px 0 0}
 .gc-title{font-size:20px}
 .gc-opts{width:100%}
 .gc-field{flex:1 1 140px;min-width:0}
 .gc-field select{width:100%}
 .gc-body{padding:14px 12px 16px}
 .gc-sheet::before{display:none}
 .gc-back,.gc-input{padding:16px 16px 20px;min-height:220px;font-size:17px;line-height:1.8}
 .gc-foot{flex-direction:column;align-items:stretch}
 .gc-actions{justify-content:space-between}
 .gc-primary{order:-1;flex:1 1 100%}
 .gc-card-actions .gc-accept{flex:1 1 auto;justify-content:center}
}
@keyframes gc-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes gc-fade{0%{background-color:color-mix(in srgb,var(--gc-ok) 35%,transparent)}100%{background-color:transparent}}
@keyframes gc-spin{to{transform:rotate(360deg)}}
@keyframes gc-tick{to{stroke-dashoffset:0}}
@media(prefers-reduced-motion:reduce){
 .gc *,.gc *::before,.gc *::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}
 .gc-tick{stroke-dashoffset:0}
}

/* design: sites/<d>/design/site.css */
body{background:var(--xcanvas);color:var(--xtype);font-family:var(--xtext-font);font-size:17px;line-height:1.85;font-weight:400}.ch-shell{max-width:1160px;margin-right:auto;margin-left:auto;padding-left:28px;padding-right:28px}.ch-core{padding-top:2.5rem;padding-bottom:4rem}.ch-core .ch-shell{background:none;border:0;box-shadow:none;border-radius:0}.ch-header-bar{position:relative;top:auto;background:var(--xtype);color:var(--xpanel);border:0;border-bottom:4px solid var(--xpop);border-radius:0;box-shadow:none;padding:0;margin:0}.ch-header-bar .ch-masthead__in{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;min-height:0;margin:0 auto;padding-top:1.4rem;padding-bottom:1rem;border:0;border-radius:0;background:none;box-shadow:none}.ch-header-bar .ch-home-link{font:600 1.65rem/1.25 var(--xdisplay);color:var(--xpanel);text-decoration:none;display:flex;align-items:center;justify-content:center;gap:.65rem;letter-spacing:0;text-transform:none;max-width:44ch;white-space:normal;text-align:center}.ch-home-link>svg{width:34px;height:34px;flex:0 0 34px;background:none;padding:0;opacity:1}.ch-links{display:flex;align-items:center;justify-content:center;gap:1.3rem;flex-wrap:wrap;min-width:0;font:500 1rem/1.7 var(--xtext-font);padding:0;width:100%}.ch-header-bar .ch-links>a{color:var(--xpanel);background:none;border:0;border-bottom:2px solid transparent;border-radius:0;padding:.2rem .05rem;text-transform:none;font-size:1rem;font-weight:500;letter-spacing:0;line-height:1.6;text-decoration:none}.ch-header-bar .ch-links>a:hover{color:var(--xpanel);border-bottom-color:var(--xpop)}.ch-header-bar .ch-links>a[aria-current]{font-weight:700;color:var(--xpanel);background:none;border-color:var(--xpop)}.ch-language{font-family:var(--xtext-font);font-size:1rem;margin:0}.ch-language summary,.ch-langpills a,.ch-header-bar .ch-codes a{color:var(--xpanel);background:none;border:1px solid color-mix(in srgb,var(--xpanel) 30%,var(--xtype));border-radius:var(--xradius);padding:.35rem .6rem;text-decoration:none;line-height:1.5;font-weight:500;min-height:32px}.ch-language summary:hover,.ch-langpills a:hover,.ch-header-bar .ch-codes a:hover{color:var(--xpanel);background:var(--xmain)}.ch-langs__list{background:var(--xpanel);color:var(--xtype);border:1px solid var(--xline);box-shadow:0 5px 16px color-mix(in srgb,var(--xtype) 12%,transparent);padding:.5rem;z-index:15;min-width:170px}.ch-header-bar .ch-langs__list a{color:var(--xtype);font-size:1rem;font-weight:500;padding:.4rem .6rem;background:none;border-radius:var(--xradius);text-decoration:none;display:block;line-height:1.6}.ch-header-bar .ch-langs__list a:hover,.ch-header-bar .ch-langs__list a[aria-current]{color:var(--xmain);background:var(--xcanvas)}.ch-langpills{display:flex;flex-wrap:wrap;justify-content:center;gap:.4rem}.ch-langpills a[aria-current],.ch-header-bar .ch-codes a[aria-current]{color:var(--xpanel);background:var(--xmain);border-color:var(--xpanel);font-weight:700}.ch-codes{display:flex;flex-wrap:wrap;gap:.3rem;border:0;padding:0}.ch-header-bar .ch-codes a{font-size:1rem;min-width:31px;text-align:center}.ch-intro{background:var(--xpanel);color:var(--xtype);text-align:left;padding:2.7rem 2.6rem;margin:0 0 2.4rem;border:1px solid var(--xline);border-left:4px solid var(--xpop);border-radius:var(--xradius);box-shadow:none;position:relative;overflow:hidden;background-image:none}.ch-intro--art{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(250px,1fr);align-items:center;gap:2.2rem}.ch-intro>div:first-child{min-width:0}.ch-intro h1{font:600 clamp(2.4rem,3.9vw,3.8rem)/1.06 var(--xdisplay);letter-spacing:0;max-width:21ch;color:var(--xtype);margin:0 0 1.25rem;text-transform:none;text-wrap:balance}.ch-intro .ch-subhead{color:var(--xquiet);font:400 1rem/1.85 var(--xtext-font);max-width:55ch;margin:0}.ch-intro .ch-art{width:100%;aspect-ratio:720 / 520;height:auto;min-height:210px;max-height:330px;display:flex;align-items:flex-end;justify-content:flex-end;background:var(--xcanvas) url(/assets/img/d-pencil-check.svg) center / contain no-repeat;border:1px solid var(--xline);border-radius:var(--xradius);padding:.65rem}.ch-art>svg{width:28px;height:28px;opacity:.5;flex:0 0 28px}.ch-panel-app{background:none;border:0;border-radius:0;box-shadow:none;padding:0;margin:0 0 3rem;min-width:0}.ch-subhead{font:400 1.1rem/1.9 var(--xtext-font);max-width:70ch;margin:1rem 0 1.6rem;color:var(--xquiet)}.ch-layout{display:block;grid-template-columns:none}.ch-layout>div{min-width:0}.ch-on-this-page{background:var(--xpanel);border:1px solid var(--xline);border-left:3px solid var(--xpop);border-radius:var(--xradius);padding:1.05rem 1.3rem;position:static;top:auto;font:400 1rem/1.9 var(--xtext-font);margin:0 0 2.25rem;box-shadow:none;max-height:none;overflow:visible;align-self:auto;width:100%}.ch-on-this-page>strong{font:700 1rem/1.5 var(--xtext-font);letter-spacing:0;text-transform:none;color:var(--xtype);display:block;margin:0 0 .6rem}.ch-on-this-page ol{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:.2rem 2rem;margin:0;padding:0 0 0 1.1rem;list-style:decimal}.ch-on-this-page li{margin:0;padding-left:.1rem;line-height:1.8;break-inside:avoid;min-width:0}.ch-on-this-page a{color:var(--xquiet);text-decoration:none;display:inline;font-size:inherit;line-height:inherit;padding:0;background:none}.ch-on-this-page a:hover{color:var(--xmain);text-decoration:underline;text-underline-offset:3px}.ch-part{background:none;border:0;border-top:1px solid var(--xline);border-radius:0;box-shadow:none;padding:2rem 0 1.3rem;margin:0;position:relative}.ch-part::before{content:none}.ch-part>h2{font:600 2.2rem/1.17 var(--xdisplay);letter-spacing:0;max-width:29ch;padding:0;border:0;background:none;box-shadow:none;color:var(--xtype);margin:.45rem 0 1.15rem;text-transform:none;text-wrap:balance}.ch-part>h2::before,.ch-part>h2::after{content:none}.ch-part>h3{font:600 1.5rem/1.25 var(--xdisplay);letter-spacing:0;margin:1.2rem 0 .65rem;color:var(--xtype);text-transform:none}.ch-part>p,.ch-part>ul,.ch-part>ol{max-width:70ch;font-size:1rem;line-height:1.95;margin:.75rem 0 1.1rem;color:var(--xtype);font-weight:400}.ch-part li{padding-left:.2rem;margin:.5rem 0}.ch-core p a,.ch-post a:not(.ch-pill-btn):not(.ch-post__kicker){color:var(--xmain);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;background:none}.ch-core p a:hover,.ch-post a:not(.ch-pill-btn):not(.ch-post__kicker):hover{color:var(--xpop);text-decoration-thickness:2px}.ch-data-wrap{max-width:100%;width:100%;overflow-x:auto;overscroll-behavior-x:contain;margin:1.4rem 0 1.6rem;border:1px solid var(--xline);border-radius:var(--xradius);background:var(--xpanel)}.ch-facts{border:0;border-collapse:collapse;width:100%;font:.81rem/1.8 var(--xtext-font);font-variant-numeric:tabular-nums;min-width:560px;margin:0;color:var(--xtype)}.ch-facts caption{background:var(--xpanel);color:var(--xquiet);font:600 1rem/1.7 var(--xtext-font);text-align:left;padding:.85rem 1rem;border-bottom:1px solid var(--xline);letter-spacing:0}.ch-facts th,.ch-facts td{padding:.75rem 1rem;text-align:left;border:0;border-bottom:1px solid var(--xline);vertical-align:top;color:var(--xtype);line-height:1.8}.ch-facts thead th{font:600 1rem/1.7 var(--xtext-font);background:var(--xcanvas);color:var(--xtype);text-transform:none}.ch-facts tr:last-child td{border-bottom:0}.ch-facts tbody tr:nth-child(even){background:color-mix(in srgb,var(--xcanvas) 65%,var(--xpanel))}.ch-facts td:first-child{font-weight:500;min-width:140px}.ch-facts tbody tr:hover{background:color-mix(in srgb,var(--xmain) 5%,var(--xpanel))}.ch-visual{max-width:760px;margin:1.8rem 0 2rem;background:var(--xpanel);border:1px solid var(--xline);border-radius:var(--xradius);overflow:hidden}.ch-visual img{display:block;max-width:100%;width:100%;height:auto;object-fit:contain}.ch-visual figcaption{font:.75rem/1.9 var(--xtext-font);color:var(--xquiet);padding:.85rem 1.05rem;border-top:1px solid var(--xline);text-align:left;margin:0}.ch-step-list{list-style:decimal;padding-left:1.5rem;margin:1.3rem 0;max-width:70ch}.ch-step-list li{line-height:1.9;margin:.7rem 0;padding-left:.35rem}.ch-step-list li::marker{font-weight:700;color:var(--xpop);font-variant-numeric:tabular-nums}.ch-path{font:.74rem/1.8 var(--xtext-font);margin:0 0 1.5rem;color:var(--xquiet);background:none;padding:0;border:0}.ch-path a{color:var(--xmain);text-decoration:underline;text-underline-offset:3px;font-weight:500}.ch-card-list,.ch-card-list--feat{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.5rem;margin:1.5rem 0 1rem}.ch-tile,.ch-brow{border:1px solid var(--xline);background:var(--xpanel);border-radius:var(--xradius);box-shadow:none;text-decoration:none;color:var(--xtype);padding:0;overflow:hidden;transition:border-color .18s,transform .18s}.ch-tile:hover,.ch-brow:hover{border-color:var(--xpop);box-shadow:none;transform:translateY(-2px);color:var(--xtype)}.ch-read__img{width:100%;height:auto;display:block;border-bottom:1px solid var(--xline);object-fit:contain;background:var(--xcanvas);aspect-ratio:1200 / 630}.ch-tile__txt{display:flex;flex-direction:column;gap:.7rem;padding:1.35rem 1.5rem;min-width:0}.ch-tile__txt b{font:600 1.8rem/1.15 var(--xdisplay);letter-spacing:0;display:block;color:var(--xtype);text-transform:none;max-width:28ch}.ch-tile__txt>span{font:.86rem/1.85 var(--xtext-font);color:var(--xquiet);max-width:52ch}.ch-link-card__meta{font:600 1rem/1.6 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.ch-visual figcaption{border:0;font-size:16px;color:var(--xquiet);line-height:1.75;padding:.7rem 0;font-style:italic}
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.ch-tile:hover,.ch-brow:hover{background:none;box-shadow:none;transform:translateY(-2px)}
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.ch-post__head h1{margin:.6rem 0 1rem;font-size:36px;line-height:1.3}
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@media(max-width:760px){
 .ch-core{padding:1rem 20px 3rem}
 .ch-header-bar .ch-masthead__in{padding:.75rem 20px;gap:.5rem;align-items:flex-start}
 .ch-header-bar .ch-home-link{font-size:20px}
 .ch-links{gap:1rem;justify-content:flex-start}
 .ch-intro{margin:0 0 .9rem}
 .ch-core h1,.ch-intro h1,.ch-post__head h1{font-size:30px;line-height:1.3;letter-spacing:0}
 .ch-intro .ch-subhead{font-size:16px;line-height:1.7}
 .ch-part>h2,.ch-questions>h2{font-size:25px;line-height:1.45}
 .ch-part>p,.ch-part>ul,.ch-part>ol,.ch-post .ch-part>p,.ch-questions p{font-size:16px;line-height:1.85}
 .ch-hint-box{font-size:18px}
 .ch-facts{min-width:520px}
 .ch-data-wrap{overflow:auto}
 .ch-brow{display:grid;grid-template-columns:100px minmax(0,1fr);gap:1rem}
 .ch-brow .ch-read__img{width:100%;height:auto;min-height:0;aspect-ratio:1;object-fit:cover;align-self:start}
 .ch-brow .ch-tile__txt,.ch-tile__txt{padding:0;gap:.5rem}
 .ch-tile__txt b{font-size:20px;line-height:1.45}
 .ch-tile__txt>span{font-size:16px;line-height:1.7}
 .ch-footer .ch-shell{padding:0 20px}
}
@media(prefers-reduced-motion:reduce){
 .ch-tile,.ch-brow,.ch-core .ch-pill-btn{transition:none}
 .ch-tile:hover,.ch-brow:hover,.ch-core .ch-pill-btn:hover{transform:none}
}

/* E: a newspaper masthead, readable before the editor opens. */
.ch-header-bar{background:var(--xcanvas);border:0;padding:0}
.ch-header-bar .ch-masthead__in{display:flex;flex-direction:column;align-items:center;gap:0;padding:.8rem 24px .2rem}
.ch-header-bar .ch-home-link{display:flex;justify-content:center;width:100%;box-sizing:border-box;border-top:1px solid var(--xmain);border-bottom:1px solid var(--xmain);padding:.65rem 0;color:var(--xmain);font:700 25px/1.5 var(--xdisplay);letter-spacing:0;text-transform:none}
.ch-header-bar .ch-links{justify-content:center;gap:1.5rem;margin-top:.3rem}
.ch-header-bar .ch-links>a,.ch-header-bar summary{color:var(--xtype)}
.ch-header-bar .ch-language summary{background:var(--xcanvas);color:var(--xtype);border:0;padding:.4rem .6rem}
.ch-header-bar .ch-langs__list a{color:var(--xtype)}
.ch-header-bar .ch-langs__list a:hover{color:var(--xmain)}
@media(max-width:760px){.ch-header-bar .ch-masthead__in{align-items:center;padding:.55rem 20px .1rem}.ch-header-bar .ch-home-link{font-size:21px;padding:.45rem 0}.ch-header-bar .ch-links{justify-content:center;gap:1.1rem}}
@media(max-width:760px){.ch-header-bar .ch-masthead__in{padding-top:.2rem}.ch-core{padding-top:.75rem}}

/* Header: the current page link stays readable on the white masthead. */
.ch-header-bar .ch-links>a[aria-current]{color:var(--xmain);font-weight:700;border-bottom:2px solid var(--xpop)}
.ch-header-bar .ch-links>a:hover{color:var(--xmain)}