:root{--bg:#fff;--fg:#1b1d24;--mut:#6b7080;--card:#fff;--soft:#f5f6fa;--bd:#e4e6ee;--ac:#e5484d;--ac2:#f5a524;--ok:#12a594;--ink:#fff;--rad:12px;--fn:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Symbols 2","Noto Sans Symbols","Segoe UI Symbol","Apple Symbols","Noto Color Emoji",sans-serif;--fd:var(--fn);--w:1120px;--wr:820px;--hh:60px;--tbh:62px;--gap:10px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 12px)}
html.kf-lock{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.7 var(--fn);overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6,b,strong,th,dt,legend,summary,label,button,optgroup{font-weight:inherit}
strong,b{color:var(--fg)}
h1,h2,h3,h4{font-family:var(--fd);line-height:1.25;margin:0 0 .5em}
h1{font-size:clamp(1.7rem,4.6vw,2.6rem)}
h2{font-size:clamp(1.35rem,3.2vw,1.8rem)}
h3{font-size:1.25rem}
h4{font-size:1.1rem}
p,ul,ol,dl,figure,table,pre,blockquote{margin:0 0 1em}
a{color:var(--ac);text-decoration:none}
a:hover{text-decoration:underline}
img,svg,video,iframe{max-width:100%;height:auto}
img{display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
small{font-size:.85rem;color:var(--mut)}
hr{border:0;border-top:1px solid var(--bd);margin:2em 0}
:focus-visible{outline:2px solid var(--ac);outline-offset:2px}
[hidden]{display:none!important}
.kf-sk{position:absolute;left:-999px;top:0;background:var(--ac);color:var(--ink);padding:8px 14px;z-index:99}
.kf-sk:focus{left:8px;top:8px}

/* header */
.kf-h{position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--bd);height:var(--hh)}
.kf-w{max-width:var(--w);margin:0 auto;padding:0 16px;height:100%;display:flex;align-items:center;gap:18px}
.kf-lg{font-family:var(--fd);font-size:1.3rem;color:var(--fg);display:flex;align-items:center;gap:8px;min-width:0}
.kf-lg:hover{text-decoration:none}
.kf-lg img{max-height:38px;width:auto}
.kf-nv{flex:1;min-width:0}
.kf-nv ul{display:flex;gap:4px;margin:0;padding:0;list-style:none;flex-wrap:nowrap;overflow:hidden}
.kf-nv a{display:block;padding:8px 12px;border-radius:999px;color:var(--fg);font-size:.95rem;white-space:nowrap}
.kf-nv a:hover,.kf-nv .on a{background:var(--soft);text-decoration:none}
.kf-cta,.kf-btn,.kf-go{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.65em 1.3em;border:0;border-radius:999px;background:var(--ac);color:var(--ink);font-size:1rem;line-height:1.3}
.kf-cta:hover,.kf-btn:hover{text-decoration:none;filter:brightness(1.07)}
.kf-go:disabled{opacity:.6}

/* layout */
.kf-m{min-height:60vh;padding-bottom:40px}
.kf-m>*{max-width:var(--w);margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}
.kf-m>.kf-w2{max-width:var(--wr)}
.kf-m>.kf-pg{max-width:var(--wr)}
.kf-h1{margin-top:.6em}
.kf-lead{font-size:1.1rem;color:var(--mut)}
.kf-sub{color:var(--mut);margin:-.2em 0 .9em}
.kf-s{margin-top:34px;margin-bottom:34px}
.kf-sh2{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.kf-sh2 h2{margin:0;display:flex;align-items:center;gap:10px}
.kf-sh2 h2 svg{background:var(--ac);color:var(--ink);border-radius:8px;padding:4px;width:28px;height:28px;flex:none}
.kf-sh2 p{margin:0;color:var(--mut);font-size:.95rem}

/* tool */
.kf-gen{padding-top:22px;padding-bottom:6px}
.kf-f{margin:18px 0 8px}
.kf-row{display:flex;gap:10px}
.kf-row input{flex:1;min-width:0;padding:.85em 1.1em;border:2px solid var(--bd);border-radius:999px;background:var(--card);font-size:1.15rem}
.kf-row input:focus{border-color:var(--ac);outline:0}
.kf-row2{display:flex;align-items:flex-start;gap:10px;flex-wrap:wrap;margin-top:10px}
.kf-ghost{display:inline-flex;align-items:center;gap:8px;padding:.5em 1.1em;border:1px solid var(--bd);border-radius:999px;background:var(--card);font-size:.95rem}
.kf-ghost:hover{border-color:var(--ac);color:var(--ac)}
.kf-ghost svg{width:18px;height:18px}
.kf-op summary{display:inline-block;cursor:pointer;padding:.5em 1.1em;border:1px solid var(--bd);border-radius:999px;font-size:.95rem;list-style:none}
.kf-op summary::-webkit-details-marker{display:none}
.kf-op>div{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.kf-op label{display:flex;flex-direction:column;gap:2px;font-size:.85rem;color:var(--mut)}
.kf-op select{padding:.5em .8em;border:1px solid var(--bd);border-radius:10px;background:var(--card);font-size:1rem;min-width:84px}
.kf-ttl{color:var(--mut);margin:14px 0 0}

/* free-size items: every row is filled edge to edge, widths follow the text */
.kf-cl{display:flex;flex-wrap:wrap;gap:var(--gap);margin:0;padding:0;list-style:none}
.kf-i,.kf-k,.kf-q,.kf-k2,.kf-cl>li{flex:1 1 auto;min-width:0;max-width:100%}
.kf-i{padding:.7em 1.1em;border:1px solid var(--bd);border-radius:var(--rad);background:var(--card);font-size:1.1rem;line-height:1.5;text-align:center;overflow-wrap:anywhere;transition:border-color .15s,background .15s}
.kf-i:hover{border-color:var(--ac)}
.kf-i.ok,.kf-k.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.kf-k2{display:flex;border:1px solid var(--bd);border-radius:var(--rad);background:var(--card);overflow:hidden}
.kf-k2 .kf-i{border:0;border-radius:0;flex:1 1 auto;background:none}
.kf-lk{border:0;border-left:1px solid var(--bd);background:var(--soft);padding:0 .9em;color:var(--mut);font-size:.9rem}
.kf-lk i{font-style:normal;margin-left:2px}
.kf-lk.ok{color:var(--ok)}
.kf-k{display:flex;flex-direction:column;justify-content:space-between;gap:14px;padding:16px 18px;border:1px solid var(--bd);border-radius:var(--rad);background:var(--card);text-align:left;min-width:150px}
.kf-k .t{font-size:1.4rem;line-height:1.35;overflow-wrap:anywhere}
.kf-k .m{display:flex;justify-content:space-between;gap:12px;font-size:.85rem}
.kf-k em{font-style:normal;color:var(--mut)}
.kf-k u{text-decoration:none;color:var(--ac)}
.kf-k:hover{border-color:var(--ac)}
.kf-q{display:flex;flex-direction:column;gap:6px;padding:14px 16px;border:1px solid var(--bd);border-radius:var(--rad);background:var(--card);color:var(--fg);min-width:150px}
.kf-q:hover{border-color:var(--ac);text-decoration:none}
.kf-q .r{display:flex;justify-content:space-between;color:var(--mut);font-size:.85rem}
.kf-q em{font-style:normal;color:var(--ok)}
.kf-q em::before{content:"▲ "}
.kf-q .t{font-size:1.15rem;line-height:1.35}
.kf-q .m{color:var(--mut);font-size:.85rem}

/* weekly board */
.kf-gold{background:var(--soft);padding-top:28px;padding-bottom:28px;border-radius:var(--rad)}
.kf-top{display:flex;flex-wrap:wrap;gap:var(--gap);margin:22px 0 14px;padding:0;list-style:none}
.kf-top li{flex:1 1 220px;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:30px 16px 20px;border:2px solid var(--bd);border-radius:var(--rad);background:var(--card);text-align:center}
.kf-top li.p1{border-color:var(--ac)}
.kf-top li.p2{border-color:var(--ac2)}
.kf-top li.p3{border-color:var(--ok)}
.kf-top i,.kf-gold ol[start] i{font-style:normal}
.kf-top i{position:absolute;top:-16px;left:50%;transform:translateX(-50%);width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--bd);color:var(--ink)}
.kf-top .p1 i{background:var(--ac)}
.kf-top .p2 i{background:var(--ac2)}
.kf-top .p3 i{background:var(--ok)}
.kf-top .kf-i{border:0;background:none;font-size:1.4rem;width:100%}
.kf-top em{font-style:normal;font-size:.8rem;padding:.3em .9em;border-radius:999px;background:var(--soft);color:var(--mut)}
.kf-gold .kf-cl>li{display:flex;align-items:center;gap:12px;border:1px solid var(--bd);border-radius:var(--rad);background:var(--card);padding-left:14px}
.kf-gold .kf-cl>li i{color:var(--mut);font-size:.85rem}
.kf-gold .kf-cl>li .kf-i{border:0;background:none;text-align:left;padding-left:0}

/* reading */
.kf-c{padding-top:10px;padding-bottom:10px}
.kf-c h2{margin-top:1.6em}
.kf-c h3{margin-top:1.4em}
.kf-c ul,.kf-c ol{padding-left:1.4em}
.kf-c li{margin-bottom:.3em}
.kf-c img{border-radius:var(--rad);margin:1em auto}
.kf-c blockquote{margin-left:0;padding:.2em 1em;border-left:4px solid var(--ac);background:var(--soft)}
.kf-c pre,.kf-c code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;background:var(--soft);border-radius:6px}
.kf-c code{padding:.1em .35em}
.kf-c pre{padding:12px;overflow:auto;white-space:pre-wrap}
.kf-tw{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1em;max-width:100%}
.kf-tw table{border-collapse:collapse;width:100%;min-width:max-content;margin:0}
.kf-tw th,.kf-tw td{border:1px solid var(--bd);padding:.5em .8em;text-align:left;vertical-align:top}
.kf-tw th{background:var(--soft)}
.kf-meta{color:var(--mut);font-size:.9rem}
.kf-fi img{width:100%;border-radius:var(--rad)}
.kf-eh{margin-bottom:1em}
.kf-c .wp-block-table,.kf-c figure{max-width:100%;overflow-x:auto}
.kf-c iframe{width:100%}

/* feedback */
.kf-r{margin-top:34px;margin-bottom:10px;padding:18px;border:1px dashed var(--bd);border-radius:var(--rad);text-align:center;max-width:var(--wr)}
.kf-r p{margin:0 0 10px;color:var(--mut)}
.kf-r div{display:flex;gap:10px;justify-content:center}
.kf-r button{display:inline-flex;align-items:center;gap:6px;padding:.5em 1.2em;border:1px solid var(--bd);border-radius:999px;background:var(--card)}
.kf-r button svg{width:18px;height:18px}
.kf-r button:hover{border-color:var(--ac)}
.kf-r small{color:var(--ok);font-size:1rem}

/* lists */
.kf-pl{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin-top:10px}
.kf-m>.kf-w2.kf-pl{max-width:var(--w)}
.kf-pc{border:1px solid var(--bd);border-radius:var(--rad);overflow:hidden;background:var(--card);display:flex;flex-direction:column}
.kf-pc .im img{width:100%;aspect-ratio:16/9;object-fit:cover}
.kf-pc .tx{padding:14px 16px 16px}
.kf-pc h2{font-size:1.15rem;margin:0 0 .4em}
.kf-pc h2 a{color:var(--fg)}
.kf-pc p{font-size:.95rem;color:var(--mut);margin:0 0 .5em}
.kf-pc time{font-size:.8rem;color:var(--mut)}
.kf-pg{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:26px;margin-bottom:10px}
.kf-pg a{padding:.5em 1.1em;border:1px solid var(--bd);border-radius:999px;color:var(--fg)}
.kf-pg a[aria-disabled]{opacity:.4;pointer-events:none}
.kf-nf{text-align:center;padding-top:40px}
.kf-big{font-size:6rem;line-height:1;color:var(--ac);font-family:var(--fd);margin:0}
.kf-sf{display:flex;gap:8px;margin:14px 0}
.kf-nf .kf-sf{max-width:420px;margin-left:auto;margin-right:auto}
.kf-sf input{flex:1;min-width:0;padding:.65em 1em;border:1px solid var(--bd);border-radius:999px;background:var(--card)}
.kf-sf button{border:0;border-radius:50%;width:44px;background:var(--ac);color:var(--ink);display:grid;place-items:center}
.kf-sf svg{width:20px;height:20px}
.kf-add{margin-top:22px}
.kf-add label>span:first-child{display:block;margin-bottom:6px;color:var(--mut)}

/* footer */
.kf-ft{background:var(--soft);border-top:1px solid var(--bd);padding:34px 0 28px;margin-top:20px}
.kf-ft .kf-w{display:grid;grid-template-columns:1.2fr 2fr;gap:18px 40px;height:auto;align-items:start}
.kf-fb p{color:var(--mut);margin:.5em 0 0;font-size:.95rem}
.kf-fm ul{display:flex;flex-wrap:wrap;gap:6px 18px;margin:0;padding:0;list-style:none}
.kf-fm a{color:var(--fg);font-size:.95rem}
.kf-cp{grid-column:1/-1;margin:10px 0 0;padding-top:16px;border-top:1px solid var(--bd);color:var(--mut);font-size:.9rem}

/* mobile app bar + sheets */
.kf-tb{display:none}
.kf-sheet{position:fixed;inset:0;z-index:60;background:rgba(10,12,20,.5);display:flex;align-items:flex-end}
.kf-sp{width:100%;max-height:82vh;overflow:auto;background:var(--bg);border-radius:20px 20px 0 0;padding:16px 14px calc(18px + env(safe-area-inset-bottom))}
.kf-sp header{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.kf-sp header span{flex:1;font-family:var(--fd);font-size:1.2rem}
.kf-sp header button{border:0;background:none;color:var(--mut);padding:6px 10px}
.kf-sp header svg{width:22px;height:22px;display:block}
.kf-ml{margin:0 0 10px;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:var(--gap)}
.kf-ml li{flex:1 1 auto}
.kf-ml a{display:block;padding:.6em 1em;border:1px solid var(--bd);border-radius:var(--rad);color:var(--fg);text-align:center}
.kf-up{position:fixed;right:14px;bottom:calc(var(--tbh) + 18px);z-index:20;width:44px;height:44px;border-radius:50%;border:1px solid var(--bd);background:var(--card);color:var(--fg);display:grid;place-items:center;box-shadow:0 4px 14px rgba(0,0,0,.12)}
.kf-up svg{width:20px;height:20px}
.kf-toast{position:fixed;left:50%;bottom:calc(var(--tbh) + 28px);transform:translate(-50%,20px);background:#14161d;color:#fff;padding:.55em 1.2em;border-radius:999px;font-size:.95rem;opacity:0;pointer-events:none;transition:.2s;z-index:80}
.kf-toast.on{opacity:1;transform:translate(-50%,0)}

@media(min-width:769px){.kf-up{bottom:24px}.kf-toast{bottom:30px}.kf-sheet{align-items:center;justify-content:center}.kf-sp{max-width:560px;border-radius:20px}}

@media(max-width:768px){
	body{padding-bottom:calc(var(--tbh) + env(safe-area-inset-bottom))}
	.kf-nv,.kf-cta{display:none}
	.kf-lg{font-size:1.2rem}
	.kf-w{padding:0 14px}
	.kf-m>*{padding-left:12px;padding-right:12px}
	/* boxes that hold items lose their own margin/padding: items get the full width */
	.kf-m>.kf-gen,.kf-m>.kf-s,.kf-gen .kf-s{padding-left:0;padding-right:0;margin-left:0;margin-right:0;max-width:none;border-radius:0}
	.kf-gen .kf-s{margin-top:22px;margin-bottom:22px}
	.kf-gen>h1,.kf-gen>.kf-lead,.kf-gen>.kf-f,.kf-ttl,.kf-sh2,.kf-sub,.kf-gen p,.kf-add{padding-left:12px;padding-right:12px}
	.kf-gen p>.kf-ghost{margin-left:0}
	.kf-gold{border-radius:0}
	.kf-cl,.kf-top,.kf-gold ol[start]{gap:4px;padding:0}
	.kf-i,.kf-k,.kf-q,.kf-k2{border-radius:8px}
	.kf-top{margin-top:26px}
	.kf-top li{flex-basis:100%}
	.kf-r{margin-left:12px;margin-right:12px;max-width:none}
	.kf-ft{padding-bottom:calc(var(--tbh) + 28px)}
	.kf-ft .kf-w{grid-template-columns:1fr}
	.kf-pl{grid-template-columns:1fr}
	h1{font-size:1.75rem}
	.kf-tb{display:grid;grid-template-columns:repeat(5,1fr);align-items:end;position:fixed;left:0;right:0;bottom:0;z-index:40;height:calc(var(--tbh) + env(safe-area-inset-bottom));padding:6px 4px env(safe-area-inset-bottom);background:var(--card);border-top:1px solid var(--bd);box-shadow:0 -6px 20px rgba(0,0,0,.06)}
	.kf-tb a,.kf-tb button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:100%;border:0;background:none;color:var(--mut);font-size:.72rem;line-height:1.2;padding:0;text-decoration:none}
	.kf-tb svg{width:24px;height:24px}
	.kf-tb .on{color:var(--ac)}
	.kf-tb .mid{position:relative;color:var(--ac)}
	.kf-tb .mid b{position:absolute;top:-26px;left:50%;transform:translateX(-50%);width:54px;height:54px;border-radius:50%;background:var(--ac);color:var(--ink);display:grid;place-items:center;box-shadow:0 0 0 5px var(--card),0 6px 16px rgba(0,0,0,.2)}
	.kf-tb .mid span{margin-top:30px}
	/* variants (the full-page layout always keeps a): b floating island, c solid dock, d icons only */
	body.kf-v-b:not(.kf-full) .kf-tb{left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));border:1px solid var(--bd);border-radius:26px;padding-bottom:6px;height:var(--tbh);box-shadow:0 10px 30px rgba(0,0,0,.16)}
	body.kf-v-b:not(.kf-full) .kf-tb .mid b{top:-22px;width:50px;height:50px;box-shadow:0 6px 16px rgba(0,0,0,.22)}
	body.kf-v-c:not(.kf-full) .kf-tb{background:var(--fg);border-top:0}
	body.kf-v-c:not(.kf-full) .kf-tb a,body.kf-v-c:not(.kf-full) .kf-tb button{color:rgba(255,255,255,.62)}
	body.kf-v-c:not(.kf-full) .kf-tb .on{color:#fff}
	body.kf-v-c:not(.kf-full) .kf-tb .mid{color:#fff}
	body.kf-v-c:not(.kf-full) .kf-tb .mid b{border-radius:18px;box-shadow:0 0 0 5px var(--fg)}
	body.kf-v-d:not(.kf-full) .kf-tb{align-items:center;padding-top:0}
	body.kf-v-d:not(.kf-full) .kf-tb span{display:none}
	body.kf-v-d:not(.kf-full) .kf-tb .on{box-shadow:inset 0 3px 0 var(--ac)}
	body.kf-v-d:not(.kf-full) .kf-tb .mid b{position:static;transform:none;width:46px;height:46px;border-radius:14px;box-shadow:none}
}

/* extra library */
.kf-xt{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px}
.kf-xt button{flex:1 1 auto;padding:.55em 1.2em;border:1px solid var(--bd);border-radius:999px;background:var(--card);font-size:1rem}
.kf-xt button[aria-selected=true]{background:var(--ac);border-color:var(--ac);color:var(--ink)}
@media(max-width:768px){.kf-xt,.kf-x>p{padding-left:12px;padding-right:12px}}