/* Layout: light pastel world. Sticky white header + mega menus → airy hero with soft colour blobs → pastel category tiles → popular → matrix → directory → how/why → SEO + FAQ → footer. Phone: bottom tab bar. */
:root{
  color-scheme:light;
  --bg:#FBFAFF; --surface:#FFFFFF; --surface-2:#F3F4FA; --ink:#1B1E2E; --muted:#636A80; --line:#E7E8F2;
  --accent:#FF6A3D; --accent-2:#FF8C5A; --accent-soft:#FFEDE5; --accent-ink:#FFFFFF;
  --c-image:#3B7BF6; --c-pdf:#EC4A57; --c-doc:#18A065; --c-text:#7C5CF0; --c-dev:#0EA5B7; --c-calc:#E29A00;
  --t-image:#EAF2FF; --t-pdf:#FFEEF0; --t-doc:#E7F8EF; --t-text:#F2EEFF; --t-dev:#E3F7F9; --t-calc:#FFF5DC;
  --hl:#E4EDFF; --hl-strong:#3B7BF6;
  --shadow:0 20px 44px -22px rgba(48,52,90,.25); --shadow-sm:0 6px 18px -10px rgba(48,52,90,.18);
  --f-display:"Outfit", "Segoe UI", system-ui, sans-serif;
  --f-body:"Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --r:18px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:15px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--surface)}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;margin:0;letter-spacing:-.02em}
.wrap{max-width:1240px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.eyebrow{font:600 12px/1 var(--f-body);letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.tabnum{font-variant-numeric:tabular-nums}

/* file-extension chip */
.ext{--c:var(--c-image);--t:var(--t-image);position:relative;display:inline-grid;place-items:center;min-width:38px;height:22px;padding:0 7px 0 6px;
  font:600 10.5px/1 var(--f-mono);letter-spacing:.03em;color:var(--c);background:var(--t);
  border-radius:5px;clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,0 100%);flex:none}
.ext::after{content:"";position:absolute;top:0;right:0;width:7px;height:7px;background:color-mix(in srgb,var(--c) 30%,var(--t))}
[data-cat="pdf"]{--c:var(--c-pdf);--t:var(--t-pdf)} [data-cat="doc"]{--c:var(--c-doc);--t:var(--t-doc)} [data-cat="text"]{--c:var(--c-text);--t:var(--t-text)}
[data-cat="dev"]{--c:var(--c-dev);--t:var(--t-dev)} [data-cat="calc"]{--c:var(--c-calc);--t:var(--t-calc)} [data-cat="image"]{--c:var(--c-image);--t:var(--t-image)}

/* header */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:20px;height:66px}
.logo{display:flex;align-items:center;gap:9px;font:700 21px/1 var(--f-display);letter-spacing:-.03em;flex:none}
.logo b{color:var(--accent);font-weight:700}
.nav{display:flex;align-items:stretch;height:66px;margin:0;padding:0;list-style:none;gap:2px}
.nav-item{display:flex;align-items:center}
.nav-btn{display:flex;align-items:center;gap:7px;height:40px;padding:0 12px;border:0;border-radius:999px;background:none;cursor:pointer;font-weight:600;font-size:14.5px;color:var(--ink);transition:background .15s}
.nav-btn svg{width:10px;height:10px;opacity:.55;transition:transform .2s}
.nav-item:hover .nav-btn,.nav-item:focus-within .nav-btn{background:var(--t,var(--surface-2))}
.nav-item:hover .nav-btn svg,.nav-item:focus-within .nav-btn svg{transform:rotate(180deg)}
.nav-btn .dot{width:8px;height:8px;border-radius:50%;background:var(--c)}
.hdr-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.hdr-search{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);color:var(--muted);cursor:pointer;min-width:210px;font-size:14px}
.hdr-search kbd{margin-left:auto;font:500 11px var(--f-mono);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:2px 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border-radius:999px;border:0;cursor:pointer;font-weight:700;font-size:14.5px;transition:transform .15s,box-shadow .15s}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--accent-ink);box-shadow:0 8px 20px -10px var(--accent)}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 12px 24px -10px var(--accent)}
.btn-ghost{background:var(--surface);border:1px solid var(--line);color:var(--ink)}
.icon-btn{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
.menu-toggle{display:none}

/* mega menu */
.mega{position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .16s,transform .16s,visibility 0s linear .16s}
.mega::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--c)}
.nav-item:hover>.mega,.nav-item:focus-within>.mega{opacity:1;visibility:visible;transform:none;transition-delay:.06s,.06s,0s}
.mega-in{display:grid;gap:28px;padding-block:26px 22px;max-height:calc(100vh - 90px);overflow:auto}
.mega-img{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)}
.mega-cols{grid-template-columns:repeat(4,minmax(0,1fr))}
.mh{margin:0 0 10px;font:700 11.5px/1 var(--f-body);letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.mlist{list-style:none;margin:0;padding:0;display:grid;gap:1px}
.mlist a{display:flex;align-items:center;gap:9px;padding:6px 8px;border-radius:9px;font-size:14px;font-weight:500}
.mlist a:hover{background:var(--surface-2)}
.mlist.two{grid-template-columns:1fr 1fr}
.mega-foot{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--muted);flex-wrap:wrap}
.mega-foot .path{font-family:var(--f-mono);color:var(--ink)}
.mega-foot a{color:var(--accent);font-weight:700}

/* matrix */
.mx-wrap{overflow-x:auto;min-width:0;max-width:100%}
.mx{border-collapse:separate;border-spacing:4px;font-family:var(--f-mono)}
.mx th{font:600 11px/1 var(--f-mono);color:var(--muted);padding:6px 4px;transition:color .12s,background .12s;border-radius:6px}
.mx thead th{text-align:center}
.mx tbody th{text-align:right;padding-right:8px}
.mx .corner{font-weight:500;font-size:10px;text-align:left;line-height:1.35;white-space:nowrap}
.mx td{padding:0}
.mx td a,.mx td span.x{display:grid;place-items:center;width:46px;height:30px;border-radius:8px;font-size:10.5px;font-weight:600;background:var(--surface-2);color:var(--muted);transition:background .12s,color .12s,transform .12s}
.mx td span.x{background:transparent;color:#C9CBDA}
.mx td.hl a{background:var(--hl);color:var(--hl-strong)}
.mx th.hl{color:var(--hl-strong);background:var(--hl)}
.mx td a:hover,.mx td a:focus-visible{background:var(--c-image);color:#fff;transform:scale(1.08)}
.mx.big td a,.mx.big td span.x{width:62px;height:40px;font-size:12px;border-radius:10px}
.mx.big th{font-size:12.5px;padding:8px 6px}

/* hero */
.hero{position:relative;overflow:hidden;padding-block:60px 44px;
  background:
   radial-gradient(520px 320px at 8% 10%, #FFE7DC 0%, transparent 70%),
   radial-gradient(460px 300px at 92% 0%, #E2EEFF 0%, transparent 70%),
   radial-gradient(420px 280px at 70% 100%, #E3F7EC 0%, transparent 70%),
   radial-gradient(380px 260px at 30% 100%, #F1EBFF 0%, transparent 70%), var(--bg)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center}
.pill-ey{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);text-transform:none;letter-spacing:0;font-size:13px;color:var(--ink);box-shadow:var(--shadow-sm)}
.pill-ey::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-doc);box-shadow:0 0 0 4px var(--t-doc)}
.hero h1{font-size:clamp(36px,5.4vw,64px);line-height:1.02;font-weight:700;margin:18px 0 18px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--accent),#F2477B 50%,var(--c-text));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:17px;color:var(--muted);max-width:52ch;margin:0 0 26px}
.search{position:relative;max-width:560px}
.search input{width:100%;height:58px;padding:0 120px 0 50px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);font-size:16px;box-shadow:var(--shadow-sm)}
.search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 5px var(--accent-soft)}
.search .mag{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search .count{position:absolute;right:18px;top:50%;transform:translateY(-50%);font:500 12px var(--f-mono);color:var(--muted)}
.results{position:absolute;left:0;right:0;top:66px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:6px;z-index:20;max-height:340px;overflow:auto}
.results a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;font-weight:500}
.results a:hover,.results a.active{background:var(--surface-2)}
.results small{margin-left:auto;font:500 11px var(--f-mono);color:var(--muted)}
.results .empty{padding:14px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 12px 6px 7px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:13.5px;font-weight:500;transition:border-color .15s,background .15s}
.chip:hover{border-color:var(--c,var(--ink));background:var(--t,var(--surface))}
.stats{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.stats div{display:grid;gap:2px;padding:12px 16px;border-radius:16px;background:rgba(255,255,255,.75);border:1px solid var(--line)}
.stats b{font:700 24px/1 var(--f-display)}
.stats span{font-size:12.5px;color:var(--muted)}

.qc{background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:var(--shadow)}
.qc-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.qc-head h2{font-size:20px}
.drop{display:grid;place-items:center;text-align:center;gap:8px;padding:28px 16px;border:2px dashed #D7D9EA;border-radius:20px;background:linear-gradient(180deg,#FFF8F4,#F7F8FF);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.drop .stack{display:flex;gap:6px;justify-content:center}
.drop .stack .ext{height:26px;min-width:44px}
.drop strong{font-size:15.5px}
.drop span{font-size:13px;color:var(--muted)}
.detected{margin-top:12px;font-size:13.5px}
.detected .chips{margin-top:8px}
.qc-row{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:end;margin-top:16px}
.qc-row label{display:grid;gap:6px;font-size:12px;font-weight:700;color:var(--muted)}
.qc-row select{height:48px;border-radius:14px;border:1px solid var(--line);background:var(--surface-2);padding:0 12px;font:600 15px var(--f-mono)}
.swap{height:48px;width:48px;border-radius:14px;border:1px solid var(--line);background:var(--surface);cursor:pointer;display:grid;place-items:center}
.qc .go{width:100%;height:52px;margin-top:12px;font-size:15.5px}
.qc .path{margin-top:8px;text-align:center;font:500 12px var(--f-mono);color:var(--muted)}

/* category tiles */
.cats{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.cat{display:grid;gap:12px;padding:18px;border-radius:var(--r);background:var(--t);border:1px solid color-mix(in srgb,var(--c) 14%,transparent);transition:transform .15s,box-shadow .15s}
.cat:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.cat .ico{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--surface);color:var(--c);box-shadow:var(--shadow-sm)}
.cat strong{font:600 17px/1.2 var(--f-display)}
.cat small{font-size:12.5px;color:var(--muted)}
.cat .n{font:600 12px var(--f-mono);color:var(--c)}

/* sections */
section.block{padding-block:52px}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.1;margin-top:8px;font-weight:700}
.sec-head p{margin:8px 0 0;color:var(--muted);max-width:60ch}

.popular{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.pcard{display:grid;gap:10px;align-content:start;padding:16px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);transition:transform .15s,box-shadow .15s,border-color .15s;position:relative;overflow:hidden}
.pcard::before{content:"";position:absolute;inset:0 0 auto;height:56px;background:linear-gradient(180deg,var(--t),transparent);z-index:0}
.pcard>*{position:relative}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:color-mix(in srgb,var(--c) 35%,var(--line))}
.pcard strong{font-size:15px;line-height:1.3}
.pcard p{margin:0;font-size:13px;color:var(--muted);line-height:1.45}
.pcard .arrow{display:flex;align-items:center;gap:6px}

.matrix-sec .panel{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow-sm)}
.matrix-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start}
.mx-readout{position:sticky;top:96px;border-radius:20px;padding:20px;background:linear-gradient(160deg,var(--t-image),var(--t-text))}
.mx-readout .pair{display:flex;align-items:center;gap:10px;margin:12px 0}
.mx-readout .pair .ext{height:30px;min-width:54px;font-size:13px;background:var(--surface)}
.mx-readout h3{font-size:22px;margin-bottom:6px}
.mx-readout p{margin:0 0 14px;color:var(--muted);font-size:14px}
.mx-readout code{font:500 12.5px var(--f-mono);background:var(--surface);padding:4px 8px;border-radius:8px}

.tabs{display:flex;gap:8px;margin-bottom:22px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 15px;border-radius:999px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:600;font-size:14px;flex:none}
.tab small{font:500 11px var(--f-mono);color:var(--muted)}
.tab[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.tab[aria-pressed="true"] small{color:inherit;opacity:.7}
.dir{display:grid;gap:16px}
.dir-cat{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;padding:22px;border-radius:24px;background:var(--surface);border:1px solid var(--line)}
.dir-cat>div:first-child{padding:16px;border-radius:16px;background:var(--t);align-self:start}
.dir-cat h3{font-size:20px;display:flex;align-items:center;gap:10px}
.dir-cat h3 i{width:10px;height:10px;border-radius:50%;background:var(--c)}
.dir-cat .meta{font:600 12px var(--f-mono);color:var(--c);margin-top:6px}
.dir-cat .sub{font:700 11px var(--f-body);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:2px 0 8px}
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(205px,1fr));gap:4px 10px}
.tgrid a{display:flex;align-items:center;gap:9px;padding:7px 8px;border-radius:10px;font-size:14px;font-weight:500;min-width:0}
.tgrid a span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tgrid a:hover{background:var(--surface-2)}
.tgroups{display:grid;gap:14px}

.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;counter-reset:s}
.step{padding:22px;border-radius:22px;background:var(--surface);border:1px solid var(--line)}
.step:nth-child(1){background:linear-gradient(180deg,var(--t-image),var(--surface) 70%)}
.step:nth-child(2){background:linear-gradient(180deg,var(--t-calc),var(--surface) 70%)}
.step:nth-child(3){background:linear-gradient(180deg,var(--t-doc),var(--surface) 70%)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--surface);box-shadow:var(--shadow-sm);font:700 15px var(--f-display);color:var(--accent)}
.step h3{font-size:19px;margin:14px 0 6px}
.step p{margin:0;color:var(--muted);font-size:14.5px}
.why{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:14px}
.why div{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px}
.why b{display:block;font:700 22px/1.1 var(--f-display);margin-bottom:6px}
.why div:nth-child(1) b{color:var(--accent)} .why div:nth-child(2) b{color:var(--c-doc)} .why div:nth-child(3) b{color:var(--c-image)} .why div:nth-child(4) b{color:var(--c-text)}
.why span{color:var(--muted);font-size:14px}

.seo{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px}
.prose{max-width:68ch;color:var(--muted);font-size:15.5px}
.prose h2{color:var(--ink);font-size:28px;margin-bottom:14px}
.prose h3{color:var(--ink);font-size:19px;margin:22px 0 6px}
.prose p{margin:0 0 12px}
.prose strong{color:var(--ink)}
.faq h2{font-size:28px;margin-bottom:14px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin-bottom:8px}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:500 20px/1 var(--f-mono);color:var(--accent)}
.faq details[open] summary::after{content:"–"}
.faq p{margin:10px 0 0;color:var(--muted);font-size:14.5px}

footer{background:linear-gradient(180deg,var(--bg),#F2F1FB);border-top:1px solid var(--line);padding-block:48px 28px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.3fr repeat(5,minmax(0,1fr));gap:28px}
.fh{margin:0 0 12px;font:700 11.5px var(--f-body);letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.foot-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:7px;font-size:14px}
.foot-grid ul a:hover{color:var(--accent)}
.foot-grid .more{color:var(--accent);font-weight:700}
.foot-about p{color:var(--muted);font-size:14px;max-width:34ch}
.foot-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:36px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:70;background:var(--bg);overflow:auto;padding-top:env(safe-area-inset-top,0px);padding-bottom:calc(80px + env(safe-area-inset-bottom,0px))}
.drawer-top{display:flex;justify-content:space-between;align-items:center;height:64px;position:sticky;top:0;background:var(--bg);z-index:2}
.drawer details{background:var(--surface);border:1px solid var(--line);border-radius:18px;margin-bottom:10px;padding:0 14px}
.drawer summary{display:flex;align-items:center;gap:10px;padding:14px 0;font:600 17px var(--f-display);cursor:pointer;list-style:none}
.drawer summary::-webkit-details-marker{display:none}
.drawer summary small{margin-left:auto;font:600 12px var(--f-mono);color:var(--muted)}
.drawer .dbody{padding-bottom:16px;display:grid;gap:14px}

/* bottom tab bar (phones) */
.tabbar{display:none}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translate(-50%,20px);opacity:0;background:var(--ink);color:#fff;padding:12px 16px;border-radius:14px;font-size:14px;z-index:80;transition:.2s;max-width:calc(100% - 32px);pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast code{font:500 12.5px var(--f-mono);opacity:.8}

@media (max-width:1100px){
  .popular{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cats{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hdr-search{min-width:0}.hdr-search .lbl,.hdr-search kbd{display:none}
  .nav-btn{padding:0 9px}
}
@media (max-width:920px){
  .nav,.hdr-search{display:none}
  .menu-toggle{display:grid}
  .hero-grid,.matrix-grid,.seo{grid-template-columns:minmax(0,1fr)}
  .mx-readout{position:static}
  .dir-cat{grid-template-columns:minmax(0,1fr);gap:12px;padding:14px}
  .steps{grid-template-columns:minmax(0,1fr)}
  .why{grid-template-columns:1fr 1fr}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:65;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);
    padding:6px max(8px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left,0px))}
  .tabbar>*{display:grid;justify-items:center;gap:3px;padding:6px 0;border:0;background:none;font-size:11px;font-weight:600;color:var(--muted);cursor:pointer;border-radius:12px}
  .tabbar>* .ti{width:38px;height:28px;border-radius:10px;display:grid;place-items:center}
  .tabbar>*.on{color:var(--ink)} .tabbar>*.on .ti{background:var(--accent-soft);color:var(--accent)}
  .tabbar .mid .ti{width:46px;height:46px;margin-top:-22px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 10px 20px -8px var(--accent)}
  .toast{bottom:calc(86px + env(safe-area-inset-bottom,0px))}
}
@media (max-width:560px){
  .hero{padding-block:28px 24px}
  .hero h1{font-size:36px}
  .hero p.lead{font-size:15.5px}
  .stats div{flex:1;min-width:0;padding:10px 12px}
  .stats b{font-size:20px}
  .cats{display:flex;overflow-x:auto;gap:10px;margin-inline:calc(-1 * max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px));scroll-snap-type:x mandatory;scrollbar-width:none}
  .cats::-webkit-scrollbar{display:none}
  .cat{flex:0 0 46%;scroll-snap-align:start;padding:14px}
  .popular{grid-template-columns:1fr 1fr;gap:10px}
  .pcard{padding:14px}.pcard p{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .qc{padding:16px;border-radius:22px}
  .qc-row{grid-template-columns:1fr 1fr}.qc-row .swap{display:none}
  .search input{padding-right:16px;height:54px}.search .count{display:none}
  .matrix-sec .panel{padding:16px 10px;border-radius:22px}
  .mx.big td a,.mx.big td span.x{width:34px;height:32px;font-size:9.5px;border-radius:8px}
  .mx.big{border-spacing:2px}.mx.big th{font-size:10.5px;padding:6px 3px}
  .hide-sm{display:none!important}
  .tgrid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .tgrid a{font-size:13px;gap:7px;padding:7px 4px}
  .tgrid .ext{min-width:34px;font-size:9.5px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ===== shared additions ===== */
.span2{grid-column:span 2}
.chip-label{align-self:center;margin-right:2px}
.pill-ey{font-weight:600}
.info{padding-block:48px 64px}
.info h1{font-size:40px;margin-bottom:16px;color:var(--ink)}

/* search modal */
.search-modal{position:fixed;inset:0;z-index:90;background:rgba(27,30,46,.35);backdrop-filter:blur(4px);display:grid;align-items:start;justify-items:center;padding:calc(70px + env(safe-area-inset-top,0px)) 16px 16px}
.sm-box{width:min(620px,100%);background:var(--surface);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.sm-input{display:flex;align-items:center;gap:10px;padding:0 14px;border-bottom:1px solid var(--line);color:var(--muted)}
.sm-input input{flex:1;min-width:0;height:58px;border:0;outline:0;background:none;font-size:16px;color:var(--ink)}
.sm-close{border:1px solid var(--line);background:var(--surface-2);border-radius:8px;font:500 12px var(--f-mono);padding:4px 8px;cursor:pointer}
.sm-results{max-height:min(60vh,460px);overflow:auto;padding:6px}
.sm-results a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;font-weight:500}
.sm-results a small{margin-left:auto;color:var(--muted);font-size:12px;text-align:right;max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sm-results a:hover,.sm-results a.active{background:var(--surface-2)}
.sm-results .empty{padding:16px;color:var(--muted)}

/* ===== tool page ===== */
.tool-hero{padding-block:22px 30px;background:radial-gradient(620px 260px at 0% 0%,var(--t) 0%,transparent 70%),radial-gradient(520px 260px at 100% 0%,#FFF1EA 0%,transparent 70%),var(--bg)}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--muted);margin-bottom:12px}
.crumbs a:hover{color:var(--accent)}
.tool-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.08;font-weight:700}
.tool-hero .lead{color:var(--muted);font-size:16px;max-width:70ch;margin:10px 0 14px}
.badges{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.badges li{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:13px;font-weight:600}
.badges li:nth-child(1) svg{color:var(--accent)} .badges li:nth-child(2) svg{color:var(--c-calc)} .badges li:nth-child(3) svg{color:var(--c-doc)} .badges li:nth-child(4) svg{color:var(--c-image)}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);padding:22px;min-height:220px;scroll-margin-top:90px}
.tool-loading{display:flex;align-items:center;justify-content:center;gap:10px;min-height:180px;color:var(--muted)}
.spin{width:18px;height:18px;border-radius:50%;border:2.5px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite;display:inline-block;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.privacy-note{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin:12px 4px 0}
.privacy-note svg{color:var(--c-doc);flex:none}
.related{padding-block:22px 6px}
.related .chips{margin-top:10px}
.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;padding-block:28px 40px;align-items:start}
.tool-content{max-width:76ch}
.tool-content h2{font-size:26px;margin:34px 0 10px;scroll-margin-top:90px}
.tool-content h2:first-child{margin-top:0}
.tool-content h3{font-size:18px;margin:18px 0 6px}
.tool-content ul,.tool-content ol{padding-left:20px;margin:0 0 12px}
.tool-content li{margin-bottom:6px}
.tool-content a{color:var(--accent);font-weight:600}
.tool-content .feat{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.tool-content .feat div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.tool-content .feat h3{margin:0 0 4px;font-size:16px;color:var(--ink)}
.tool-content .feat p{margin:0;font-size:14.5px}
.tool-content .tbl{overflow-x:auto;margin:12px 0;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.tool-content table{border-collapse:collapse;width:100%;font-size:14px}
.tool-content th,.tool-content td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tool-content th{color:var(--ink);background:var(--surface-2);font-weight:700}
.tool-content tr:last-child td{border-bottom:0}
.tool-content .steps-list{counter-reset:st;list-style:none;padding:0}
.tool-content .steps-list li{counter-increment:st;position:relative;padding:2px 0 8px 44px}
.tool-content .steps-list li::before{content:counter(st);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font:700 14px var(--f-display)}
.tool-content .steps-list b{color:var(--ink)}
.tool-content .faq-list details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin-bottom:8px}
.tool-content .faq-list summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
.tool-content .faq-list summary::-webkit-details-marker{display:none}
.tool-content .faq-list summary::after{content:"+";color:var(--accent);font:500 20px/1 var(--f-mono)}
.tool-content .faq-list details[open] summary::after{content:"–"}
.tool-content .faq-list p{margin:8px 0 0}
.toc{position:sticky;top:90px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px}
.toc ol{margin:10px 0 14px;padding-left:18px;font-size:14px;display:grid;gap:6px;color:var(--muted)}
.toc a:hover{color:var(--accent)}
.toc-cta{width:100%}

/* ===== tool UI kit ===== */
.ck-drop{display:grid;place-items:center;text-align:center;gap:8px;padding:34px 16px;border:2px dashed #D3D6E8;border-radius:20px;background:linear-gradient(180deg,var(--t,#F7F8FF),#FFFFFF);cursor:pointer;transition:border-color .15s,background .15s;position:relative}
.ck-drop:hover,.ck-drop.over{border-color:var(--accent);background:var(--accent-soft)}
.ck-drop .big{font:600 19px var(--f-display)}
.ck-drop .hint{font-size:13px;color:var(--muted)}
.ck-drop .btn{pointer-events:none}
.ck-drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.ck-drop.compact{padding:16px;grid-auto-flow:column;gap:12px}
.ck-row{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin-top:16px}
.ck-field{display:grid;gap:6px;font-size:12.5px;font-weight:700;color:var(--muted);min-width:0}
.ck-field.grow{flex:1 1 220px}
.ck-field input[type=text],.ck-field input[type=number],.ck-field input[type=password],.ck-field input[type=date],.ck-field input[type=datetime-local],.ck-field input[type=url],.ck-field select,.ck-field input:not([type]){height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);padding:0 12px;font-size:15px;font-weight:500;color:var(--ink);min-width:0;width:100%}
.ck-field input[type=color]{height:44px;width:60px;border:1px solid var(--line);border-radius:12px;padding:3px;background:var(--surface)}
.ck-field input[type=range]{width:100%;accent-color:var(--accent)}
.ck-field .val{color:var(--ink);font-family:var(--f-mono)}
.ck-check{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;height:44px;cursor:pointer}
.ck-check input{width:18px;height:18px;accent-color:var(--accent)}
textarea.ck-ta{width:100%;min-height:200px;border-radius:16px;border:1px solid var(--line);background:var(--surface-2);padding:14px;font:14px/1.55 var(--f-mono);color:var(--ink);resize:vertical}
textarea.ck-ta.plain{font-family:var(--f-body);font-size:15px}
.ck-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}
.ck-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;align-items:center}
.ck-actions .btn{height:46px}
.btn-soft{background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}
.btn-dark{background:var(--ink);color:#fff}
.btn[disabled]{opacity:.5;pointer-events:none}
.btn-sm{height:34px!important;padding:0 12px;font-size:13px}
.ck-seg{display:inline-flex;flex-wrap:wrap;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:3px;gap:3px}
.ck-seg button{border:0;background:none;border-radius:9px;padding:8px 12px;font-weight:600;font-size:13.5px;cursor:pointer;color:var(--muted)}
.ck-seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}
.ck-files{display:grid;gap:8px;margin-top:16px}
.ck-file{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.ck-file .th{width:52px;height:52px;border-radius:10px;background:var(--surface-2) center/cover no-repeat;display:grid;place-items:center;overflow:hidden}
.ck-file .th canvas,.ck-file .th img{max-width:100%;max-height:100%}
.ck-file .nm{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ck-file .meta{font-size:12.5px;color:var(--muted);font-family:var(--f-mono)}
.ck-file .meta .good{color:var(--c-doc);font-weight:600}
.ck-file .meta .bad{color:var(--c-pdf);font-weight:600}
.ck-file .acts{display:flex;gap:6px;align-items:center}
.ck-file .icon-btn{width:34px;height:34px;border-radius:10px}
.ck-status{margin-top:14px;font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px;min-height:20px}
.ck-status.err{color:var(--c-pdf);font-weight:600}
.ck-status.ok{color:var(--c-doc);font-weight:600}
.ck-preview{margin-top:16px;border-radius:18px;background:repeating-conic-gradient(#F1F2F8 0 25%,#FFFFFF 0 50%) 0 0/20px 20px;border:1px solid var(--line);display:grid;place-items:center;padding:12px;min-height:160px;overflow:hidden}
.ck-preview canvas,.ck-preview img{max-width:100%;max-height:520px;height:auto;border-radius:6px}
.ck-out{margin-top:16px;padding:16px;border-radius:18px;background:var(--surface-2);border:1px solid var(--line)}
.ck-big{font:700 30px/1.1 var(--f-display);color:var(--ink)}
.ck-kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:16px}
.ck-kv div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px}
.ck-kv b{display:block;font:700 22px/1.15 var(--f-display);color:var(--ink);word-break:break-word}
.ck-kv span{font-size:12.5px;color:var(--muted)}
.ck-kv .hi{background:var(--accent-soft);border-color:transparent}
.ck-kv .hi b{color:var(--accent)}
.ck-pages{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-top:16px}
.ck-page{position:relative;border:2px solid var(--line);border-radius:14px;background:var(--surface);padding:8px;cursor:pointer;user-select:none;transition:border-color .12s,transform .12s,opacity .12s}
.ck-page canvas{width:100%;height:auto;display:block;border-radius:6px;box-shadow:0 1px 4px rgba(0,0,0,.12);background:#fff;transition:transform .2s}
.ck-page .pn{display:flex;flex-wrap:wrap;gap:4px;justify-content:space-between;align-items:center;margin-top:6px;font:600 12px var(--f-mono);color:var(--muted)}
.ck-page.sel{border-color:var(--accent);background:var(--accent-soft)}
.ck-page.sel::after{content:"✓";position:absolute;top:6px;right:6px;width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700}
.ck-page.del{opacity:.35}
.ck-page.del::after{content:"✕";position:absolute;top:6px;right:6px;width:24px;height:24px;border-radius:50%;background:var(--c-pdf);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700}
.ck-page.dragging{opacity:.4}
.ck-page.drop-target{border-color:var(--c-image);transform:scale(1.03)}
.ck-page .pbtns{display:flex;flex-wrap:wrap;gap:4px}
.ck-page .pbtns button{width:26px;height:26px;border-radius:8px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:13px;display:grid;place-items:center}
.ck-note{font-size:13px;color:var(--muted);margin-top:10px}
.ck-hidden{display:none!important}
.ck-table{overflow:auto;max-height:520px;margin-top:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.ck-table table{border-collapse:collapse;font-size:13.5px;min-width:100%}
.ck-table th,.ck-table td{padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap;text-align:left}
.ck-table th{position:sticky;top:0;background:var(--surface-2);cursor:pointer;font-weight:700}
.ck-diff{font:14px/1.6 var(--f-mono);white-space:pre-wrap;word-break:break-word;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;margin-top:14px;max-height:520px;overflow:auto}
.ck-diff ins{background:#DCF7E6;color:#0F6B3E;text-decoration:none}
.ck-diff del{background:#FFE1E4;color:#A3202C}
.ck-list{display:grid;gap:8px;margin-top:14px}
.ck-list .item{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);min-width:0}
.ck-list .item code,.ck-list .item span.t{flex:1;min-width:0;overflow-wrap:anywhere;font-family:var(--f-mono);font-size:13.5px}
.ck-sig{width:100%;height:180px;border:1px dashed #C9CCE0;border-radius:14px;background:#fff;touch-action:none;cursor:crosshair}
.ck-place{position:relative;display:inline-block;max-width:100%}
.ck-place canvas{max-width:100%;height:auto;display:block}
.ck-place .stamp{position:absolute;border:1.5px dashed var(--accent);cursor:move;touch-action:none}
.ck-place .stamp img{width:100%;height:100%;display:block;pointer-events:none}
.ck-swatch{width:64px;height:64px;border-radius:16px;border:1px solid var(--line)}
.ck-crop-box{margin-top:16px;max-height:520px;background:var(--surface-2);border-radius:16px;overflow:hidden}
.ck-crop-box img{display:block;max-width:100%}
.ck-crop-box.circle .cropper-view-box,.ck-crop-box.circle .cropper-face{border-radius:50%}
.ck-fancy{display:grid;gap:8px;margin-top:14px}
.ck-fancy button{display:flex;justify-content:space-between;gap:12px;align-items:center;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 14px;font-size:17px;cursor:pointer;min-width:0}
.ck-fancy button span:first-child{overflow-wrap:anywhere;min-width:0}
.ck-fancy button small{color:var(--muted);font-size:12px;flex:none}
.ck-fancy button:hover{border-color:var(--accent)}
.ck-match{background:#FFE7A8;border-radius:3px}
.ck-qr{display:grid;place-items:center;padding:16px;background:#fff;border-radius:16px;border:1px solid var(--line);margin-top:16px}
.ck-qr svg,.ck-qr img,.ck-qr canvas{max-width:100%;height:auto}

@media (max-width:920px){
  .content-wrap{grid-template-columns:minmax(0,1fr)}
  .toc{position:static;order:-1}
  .toc ol{display:none}
  .toc .eyebrow{display:none}
  .toc{padding:0;border:0;background:none}
}
@media (max-width:560px){
  .tool-card{padding:14px;border-radius:22px}
  .ck-split{grid-template-columns:minmax(0,1fr)}
  .tool-content .feat{grid-template-columns:minmax(0,1fr)}
  .ck-pages{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
  .ck-drop{padding:26px 12px}
  .ck-actions .btn{flex:1 1 auto}
  .tool-content h2{font-size:22px}
}