/* Toolkit by GroupChatOn — site styles (light + dark). Brand blue #2563EB / #60A5FA. */
:root{--bg:#F6F8FC;--bg2:#EEF2F9;--card:#FFFFFF;--ink:#14213D;--muted:#55607A;--line:#DCE3EF;--brand:#2563EB;--brand-ink:#1D4ED8;--on-brand:#FFFFFF;
--soft:#E8F0FE;--in:#FFF7D6;--calc:#F1F5F9;--ok:#15803D;--bad:#B91C1C;--shadow:0 1px 2px rgba(20,33,61,.06),0 6px 20px rgba(20,33,61,.06);--r:16px;
--head:'Sora','Plus Jakarta Sans',system-ui,sans-serif}
html[data-theme=dark]{--bg:#0B1220;--bg2:#0F182B;--card:#121B2E;--ink:#E7ECF7;--muted:#9AA6C0;--line:#24314D;--brand:#60A5FA;--brand-ink:#93C5FD;--on-brand:#0B1220;
--soft:#16264A;--in:#3A3214;--calc:#1A2438;--ok:#4ADE80;--bad:#F87171;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25)}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{background:var(--bg);color:var(--ink);font:16px/1.65 'Plus Jakarta Sans',system-ui,'Segoe UI',Roboto,Arial,sans-serif;min-height:100vh;display:flex;flex-direction:column}
img,svg{max-width:100%}
a{color:var(--brand-ink)}
html[data-theme=dark] a{color:var(--brand)}
h1,h2,h3{font-family:var(--head);line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(1.65rem,1.2rem + 2vw,2.5rem);margin:.4em 0 .35em}
h2{font-size:clamp(1.2rem,1.05rem + .8vw,1.5rem);margin:1.8em 0 .55em}
h3{font-size:1.1rem;margin:1.2em 0 .4em}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 16px}
main.wrap{flex:1;padding-bottom:48px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:var(--brand);color:var(--on-brand);padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}
.muted{color:var(--muted)}
.lead{font-size:1.08rem;color:var(--muted);max-width:75ch}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:12px;min-height:64px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;flex:0 1 auto;min-width:0}
.brand img{height:40px;width:auto;display:block}
.logo-d{display:none!important}html[data-theme=dark] .logo-l{display:none!important}html[data-theme=dark] .logo-d{display:block!important}
.brand-t{font-family:var(--head);font-weight:800;color:var(--ink);font-size:1.05rem;padding:2px 8px;border-radius:8px;background:var(--soft);white-space:nowrap}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:nowrap}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem;padding:8px 10px;border-radius:10px;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{background:var(--soft);color:var(--brand-ink)}
html[data-theme=dark] .nav a:hover{color:var(--brand)}
.hdr-act{display:flex;gap:4px;margin-left:8px}
.ibtn{width:40px;height:40px;display:inline-grid;place-items:center;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;text-decoration:none}
.ibtn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ibtn:hover{border-color:var(--brand)}
/* 17+ toolkits don't fit in a header row: the toolkit list is always a ☰ menu (3 columns on wide screens) */
@media all{
 .menu-btn{display:inline-grid}
 .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;background:var(--card);border-bottom:1px solid var(--line);padding:8px 16px 14px;box-shadow:var(--shadow)}
 .nav.open{display:flex}.nav a{padding:12px}
 .nav.open{max-height:calc(100vh - 80px);overflow:auto}
 .hdr-act{margin-left:auto}
}
@media (max-width:400px){.brand img{height:30px}.brand-t{font-size:.85rem;padding:2px 6px}.ibtn{width:36px;height:36px}.hdr-act{gap:2px}}
@media (max-width:340px){.brand img{display:none!important}}

/* buttons, cards */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:12px;border:0;background:var(--brand);color:var(--on-brand);font:inherit;font-weight:700;cursor:pointer;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.btn-2{background:var(--card);color:var(--ink);border:1px solid var(--line)}
.btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,270px),1fr));gap:14px}
.card{display:flex;gap:12px;align-items:flex-start;padding:16px;background:var(--card);border:1px solid var(--line);border-left:5px solid var(--cc,var(--brand));border-radius:var(--r);text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-2px);border-color:var(--cc,var(--brand))}
.card-ic{font-size:1.6rem;line-height:1;flex:none}
.card-b{display:flex;flex-direction:column;gap:4px;min-width:0}
.card-b b{font-weight:700;line-height:1.3}
.card-b small{color:var(--muted);font-size:.86rem;line-height:1.45}
.kind{display:inline-block;align-self:flex-start;font-style:normal;font-size:.72rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;padding:2px 8px;border-radius:99px;background:var(--soft);color:var(--brand-ink)}
html[data-theme=dark] .kind{color:var(--brand)}
.kind-excel{background:#DCFCE7;color:#166534}.kind-word{background:#DBEAFE;color:#1E40AF}.kind-online{background:#FEF3C7;color:#92400E}
html[data-theme=dark] .kind-excel{background:#14361F;color:#86EFAC}html[data-theme=dark] .kind-word{background:#172554;color:#93C5FD}html[data-theme=dark] .kind-online{background:#3A2A0A;color:#FCD34D}
.kgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:16px}
.kcard{position:relative;display:flex;flex-direction:column;gap:6px;padding:20px;border-radius:20px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:var(--ink);box-shadow:var(--shadow);overflow:hidden;transition:transform .15s}
.kcard::before{content:'';position:absolute;inset:0 0 auto 0;height:5px;background:var(--cc)}
.kcard:hover{transform:translateY(-3px)}
.kcard-ic{font-size:2rem}.kcard b{font-family:var(--head);font-size:1.15rem}.kcard small{color:var(--muted)}
.kcard-n{margin-top:auto;font-size:.82rem;font-weight:700;color:var(--cc)}
html[data-theme=dark] .kcard-n{filter:brightness(1.5)}
.sec-h{margin-top:2.2em}

/* home */
.hero{padding:40px 0 10px;text-align:center}
.hero .lead{margin:0 auto}
.eyebrow{display:inline-block;font-weight:700;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-ink);background:var(--soft);padding:4px 12px;border-radius:99px;margin:0}
html[data-theme=dark] .eyebrow{color:var(--brand)}
.hero-search{display:flex;gap:8px;max-width:640px;margin:22px auto 10px}
.hero-search input{flex:1;min-width:0;min-height:48px;padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit}
.hero-stats{color:var(--muted);font-size:.92rem}
.why-g{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px}
.why-g>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.why-g p{margin:.3em 0 0;color:var(--muted);font-size:.93rem}
@media (max-width:480px){.hero{padding-top:24px;text-align:left}.hero-search{flex-direction:column}}

/* breadcrumbs, kit, item */
.crumbs{font-size:.86rem;color:var(--muted);margin:16px 0 0}
.crumbs a{color:var(--muted)}
.kit-hd{padding:6px 0 4px}.kit-ic{font-size:2.4rem}
.who{background:var(--soft);border-radius:12px;padding:10px 14px;max-width:75ch}
.kit-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:4px 18px 8px;margin:12px 0}
.kit-item h3 a{text-decoration:none;color:var(--ink)}
.kit-item p{color:var(--muted)}
.go{font-weight:700}
.item{max-width:900px}
.item-hd{margin-top:12px}
.dl-box{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow);margin:18px 0}
.dl-btns{display:flex;flex-wrap:wrap;gap:10px}
.btn-dl{text-align:left}.btn-dl span{display:flex;flex-direction:column;line-height:1.25}.btn-dl small{font-weight:500;opacity:.85;font-size:.78rem}
.dl-note{margin:.8em 0 0;color:var(--muted);font-size:.88rem}
.ticks,.tips{padding-left:0;list-style:none}
.ticks li,.tips li{position:relative;padding-left:28px;margin:.45em 0}
.ticks li::before{content:'';position:absolute;left:4px;top:.45em;width:14px;height:8px;border-left:3px solid var(--ok);border-bottom:3px solid var(--ok);transform:rotate(-45deg)}
.tips li::before{content:'💡';position:absolute;left:0;top:0}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:10px 12px 10px 52px;margin:8px 0;background:var(--card);border:1px solid var(--line);border-radius:12px}
.steps li::before{content:counter(s);position:absolute;left:12px;top:10px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:var(--on-brand);font-weight:800;display:grid;place-items:center;font-size:.9rem}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:8px 0;padding:0 14px}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0;list-style-position:outside}
.faq p{margin:0 0 12px;color:var(--muted)}
.prose{max-width:760px}.prose li{margin:.35em 0}
.note{background:var(--in);border-radius:12px;padding:12px}

/* file previews */
.xl{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff;color:#14213D;margin:10px 0 6px;max-width:100%}
.xl-tab{display:inline-block;font:600 .78rem/1 'Plus Jakarta Sans',sans-serif;padding:8px 12px;background:#E2F5E9;color:#166534;border-bottom-right-radius:10px}
.xl table{border-collapse:collapse;font:12.5px/1.35 Calibri,'Segoe UI',Arial,sans-serif;min-width:100%}
.xl td{border:1px solid #E2E8F0;padding:4px 7px;white-space:nowrap;max-width:360px;overflow:hidden;text-overflow:ellipsis}
.xl td.h{background:#2563EB;color:#fff;font-weight:700;text-align:center;white-space:normal}
.xl td.i{background:#FFF7D6}.xl td.c{background:#F1F5F9}.xl td.s{background:#E8F0FE}.xl td.b{font-weight:700}.xl td.n{text-align:right}
.doc{background:#fff;color:#14213D;border:1px solid var(--line);border-radius:6px;padding:28px clamp(16px,5vw,48px);margin:10px 0;box-shadow:var(--shadow);max-height:560px;overflow:auto;font:13.5px/1.5 Calibri,'Segoe UI',Arial,sans-serif}
.doc p{margin:.25em 0}.doc .big{font-size:1.25em;color:#2563EB}.doc .b{font-weight:700}
.doc table{border-collapse:collapse;width:100%;margin:8px 0;font-size:12.5px}
.doc td{border:1px solid #CBD5E1;padding:4px 6px}.doc tr.h td{background:#2563EB;color:#fff;font-weight:700}
.doc .more{color:#94A3B8;text-align:center}

/* ads and sponsor cards */
.ad-slot{margin:26px 0;min-height:0}
.ad-slot.on{min-height:120px}
.ad-label,.promo-label{display:block;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;text-align:center}
.promo-slot:empty{display:none}
.promo-slot{margin:26px 0}
.promo{display:flex;gap:14px;align-items:center;padding:14px;border-radius:18px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);text-decoration:none;color:var(--ink)}
.promo img{width:112px;height:84px;object-fit:cover;border-radius:12px;flex:none;background:var(--bg2)}
.promo img.is-mark{width:64px;height:64px;object-fit:contain;background:none}
.promo-ic{font-size:2.2rem;width:64px;text-align:center;flex:none}
.promo-b{display:flex;flex-direction:column;gap:3px;min-width:0}
.promo-b b{font-family:var(--head)}.promo-b span{color:var(--muted);font-size:.9rem}.promo-b small{color:var(--muted);font-size:.78rem}
.promo-cta{align-self:flex-start;margin-top:4px;font-weight:700;color:var(--brand-ink)}
html[data-theme=dark] .promo-cta{color:var(--brand)}
@media (max-width:420px){.promo{flex-direction:column;align-items:flex-start}.promo img{width:100%;height:auto;aspect-ratio:4/3}}

/* contact */
.contact{display:grid;gap:6px;max-width:560px}
.contact label{font-weight:700;margin-top:8px}
.contact input,.contact select,.contact textarea,.tk-f input,.tk-f select,.tk-f textarea{width:100%;min-height:44px;padding:9px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit}
.contact .btn{margin-top:12px}

/* footer */
.ftr{background:var(--bg2);border-top:1px solid var(--line);margin-top:24px;font-size:.92rem}
.ftr-in{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:24px;padding-top:32px;padding-bottom:18px}
.ftr-brand{display:flex;gap:12px;align-items:flex-start}.ftr-brand span{color:var(--muted)}
.ftr-nav{display:flex;flex-direction:column;gap:6px}.ftr-nav a{color:var(--muted);text-decoration:none}.ftr-nav a:hover{color:var(--brand-ink)}
.ftr-base{border-top:1px solid var(--line);padding-top:12px;padding-bottom:22px;color:var(--muted);font-size:.84rem}
.ftr-base p{margin:.3em 0}
@media (max-width:860px){.ftr-in{grid-template-columns:1fr 1fr}.ftr-brand{grid-column:1/-1}}
@media (max-width:420px){.ftr-in{grid-template-columns:1fr}}

/* online tools */
.tk-tool{margin:18px 0}
.tk-app{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:18px;align-items:start}
@media (max-width:960px){.tk-app{grid-template-columns:minmax(0,1fr)}}
.tk-form{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow)}
.tk-form fieldset{border:0;padding:0;margin:0 0 14px}
.tk-form legend{font-family:var(--head);font-weight:700;font-size:1rem;margin-bottom:6px;color:var(--brand-ink)}
html[data-theme=dark] .tk-form legend{color:var(--brand)}
.tk-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));gap:8px}
.tk-f{display:flex;flex-direction:column;gap:3px;font-size:.84rem;font-weight:600;color:var(--muted);min-width:0}
.tk-f input,.tk-f select,.tk-f textarea{font-size:.95rem;color:var(--ink);background:var(--in);font-weight:500}
.tk-chk{display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;min-height:44px}
.tk-chk input{width:20px;height:20px;accent-color:var(--brand)}
.tk-lines{display:flex;flex-direction:column;gap:10px}
.tk-line{position:relative;border:1px solid var(--line);border-radius:14px;padding:10px 10px 8px;background:var(--bg)}
.tk-line .tk-row{grid-template-columns:repeat(auto-fit,minmax(min(100%,96px),1fr))}
.tk-line .tk-f.wide{grid-column:1/-1}
.tk-x{position:absolute;top:6px;right:6px;width:32px;height:32px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--bad);cursor:pointer;font-size:1.1rem;line-height:1}
.tk-acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tk-out{position:sticky;top:80px}
.tk-out-acts{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.tk-msg{font-size:.88rem;color:var(--muted);min-height:1.3em;margin:6px 0 0}
.tk-doc{background:#fff;color:#14213D;border:1px solid var(--line);border-radius:6px;padding:22px clamp(14px,4vw,30px);box-shadow:var(--shadow);font:13px/1.45 Calibri,'Segoe UI',Arial,sans-serif;overflow-x:auto}
.tk-doc h3{font-family:'Segoe UI',Arial,sans-serif;text-align:center;color:#2563EB;margin:0;font-size:20px}
.tk-doc .sub{text-align:center;margin:2px 0;font-size:11.5px;color:#334155}
.tk-doc .bar{background:#2563EB;color:#fff;text-align:center;font-weight:700;padding:5px;margin:12px 0;letter-spacing:.05em}
.tk-doc table{border-collapse:collapse;width:100%;margin:8px 0}
.tk-doc td,.tk-doc th{border:1px solid #CBD5E1;padding:4px 6px;text-align:left;vertical-align:top}
.tk-doc th{background:#2563EB;color:#fff;font-weight:700}
.tk-doc .r{text-align:right;white-space:nowrap}.tk-doc .b{font-weight:700}
.tk-doc .kv td{border:0;padding:2px 6px 2px 0}.tk-doc .kv td:first-child{color:#55607A;white-space:nowrap}
.tk-doc .tot td{border:0;padding:2px 0}.tk-doc .tot{width:auto;margin-left:auto;min-width:240px}
.tk-doc .gt td{font-weight:800;font-size:14px;border-top:2px solid #14213D;padding-top:4px}
.tk-doc .words{font-weight:700;margin:8px 0}
.tk-doc .sign{display:flex;justify-content:space-between;gap:16px;margin-top:40px;font-size:11.5px}
.tk-doc .foot{color:#94A3B8;font-size:10px;text-align:center;margin-top:18px}
.tk-doc .grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:520px){.tk-doc .grid2{grid-template-columns:1fr}}

@media print{
 .hdr,.ftr,.crumbs,.ad-slot,.promo-slot,.tk-load,.skip{display:none!important}
 body{background:#fff;color:#000}
 .pg-tool main>*:not(.item),.pg-tool .item>*:not(.tk-tool),.pg-tool .tk-form,.pg-tool .tk-out-acts,.pg-tool .tk-msg{display:none!important}
 .pg-tool .tk-app{display:block}.pg-tool .tk-out{position:static}
 .pg-tool .tk-doc{border:0;box-shadow:none;padding:0}
 .foot-credit,.no-print{display:none!important}   /* owner: the credit is never printed */
 @page{size:A4;margin:12mm}
}

@media (min-width:760px){.nav.open{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:12px max(16px,calc((100% - 1180px)/2)) 16px}}