@font-face{font-family:"Onest";font-weight:400;font-display:swap;src:url(../fonts/onest-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Onest";font-weight:500;font-display:swap;src:url(../fonts/onest-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Onest";font-weight:600;font-display:swap;src:url(../fonts/onest-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Onest";font-weight:700;font-display:swap;src:url(../fonts/onest-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:700;font-display:swap;src:url(../fonts/jetbrains-mono-latin-700-normal.woff2) format("woff2")}
:root{--bg:#fff;--gray:#F5F5F7;--ink:#1D1D1F;--muted:#6E6E73;--line:#D2D2D7;--blue:#0071E3;--link:#0066CC;--accent:#FFB224;--green:#137A4B;--ok:#22B573;--red:#E5484D;--wrap:1120px;
 --c-pdf:#E5484D;--c-office:#2B579A;--c-net:#0E7490;--c-img:#0071E3;--c-text:#8E4EC6;--c-dev:#12A594;--c-calc:#F76B15}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.55 "Onest",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;letter-spacing:-.005em}
a{color:var(--link)}
img,svg{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* header */
.hd{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid rgba(0,0,0,.08)}
.hd .wrap{display:flex;align-items:center;gap:20px;height:60px}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font:700 18px/1 "JetBrains Mono",ui-monospace,monospace;letter-spacing:-.02em;white-space:nowrap}
.logo i{font-style:normal;color:var(--accent)}
.logo svg{width:30px;height:30px;flex:none}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--ink);text-decoration:none;font-size:15px;padding:8px 12px;border-radius:10px}
.nav a:hover,.nav a[aria-current]{background:var(--gray)}
.srch{position:relative}
.srch input{font:inherit;font-size:15px;width:220px;padding:9px 14px 9px 36px;border:1px solid var(--line);border-radius:999px;background:var(--gray)}
.srch svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted)}
.srch-r{position:absolute;right:0;top:calc(100% + 6px);width:320px;max-height:360px;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.12);padding:6px;display:none}
.srch-r.on{display:block}.srch-r a{display:block;padding:9px 12px;border-radius:10px;color:var(--ink);text-decoration:none;font-size:15px}.srch-r a:hover,.srch-r a.act{background:var(--gray)}
.srch-r small{display:block;color:var(--muted);font-size:12.5px}
/* hero + headings */
.hero{padding:64px 0 28px;text-align:center}
.eyebrow{display:inline-block;font-size:14px;font-weight:600;color:var(--muted);margin-bottom:10px}
h1{font-size:clamp(34px,5vw,56px);line-height:1.06;letter-spacing:-.035em;margin:0;font-weight:700}
.lead{font-size:clamp(18px,1.7vw,21px);color:var(--muted);max-width:720px;margin:16px auto 0;line-height:1.45}
h2{font-size:clamp(26px,3vw,34px);letter-spacing:-.025em;line-height:1.15;margin:0 0 16px}
h3{font-size:20px;letter-spacing:-.015em;margin:0 0 8px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:16px}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--ink)}
/* home grid */
.cat{padding:28px 0 8px}.cat h2{display:flex;align-items:center;gap:10px}
.cat h2 span{width:12px;height:12px;border-radius:4px;background:var(--cc,var(--blue))}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.card{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid #E5E5EA;border-radius:18px;text-decoration:none;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s,transform .2s}
.card:hover{border-color:transparent;box-shadow:0 12px 34px rgba(0,0,0,.08);transform:translateY(-2px)}
.ico{flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff;background:var(--cc,var(--blue));font:700 12px/1 "JetBrains Mono",monospace;letter-spacing:-.02em}
.card b{display:block;font-size:16.5px;line-height:1.3}.card small{display:block;color:var(--muted);font-size:14px;line-height:1.4;margin-top:3px}
.c-pdf{--cc:var(--c-pdf)}.c-image{--cc:var(--c-img)}.c-text{--cc:var(--c-text)}.c-dev{--cc:var(--c-dev)}.c-calc{--cc:var(--c-calc)}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin:26px 0 0;padding:0;list-style:none;color:var(--muted);font-size:15px}
.trust li::before{content:"✓ ";color:var(--ok);font-weight:700}
/* tool area */
.tool{max-width:880px;margin:28px auto 0;padding:26px;border-radius:24px;background:var(--gray)}
.drop{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-height:210px;padding:28px;border:2px dashed #C7C7CC;border-radius:18px;background:#fff;text-align:center;cursor:pointer;transition:border-color .2s,background .2s}
.drop:hover,.drop.over{border-color:var(--blue);background:#F2F8FF}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.drop b{font-size:19px}.drop small{color:var(--muted);font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:13px 24px;font:600 16px/1.2 inherit;font-family:inherit;cursor:pointer;text-decoration:none;transition:background .2s,opacity .2s}
.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:#0077ED}
.btn-ink{background:var(--ink);color:#fff}.btn-ghost{background:#fff;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn[disabled]{opacity:.45;cursor:default}
.files{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px}
.files li{display:flex;align-items:center;gap:12px;padding:10px 12px;background:#fff;border:1px solid #E5E5EA;border-radius:14px;font-size:15px}
.files .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.files .fs{color:var(--muted);font-size:13px;white-space:nowrap}
.files button{border:0;background:var(--gray);width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--ink)}
.files button:hover{background:#E5E5EA}
.files canvas,.files img{width:40px;height:40px;object-fit:cover;border-radius:6px;background:var(--gray);flex:none}
.opts{display:flex;flex-wrap:wrap;gap:14px 18px;align-items:flex-end;margin:18px 0 0}
.opt{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600}
.opt input[type=text],.opt input[type=number],.opt select,.opt input[type=color]{font:inherit;font-weight:400;font-size:15px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;min-width:0}
.opt input[type=color]{padding:3px;height:44px;width:64px}
.opt input[type=range]{width:200px;accent-color:var(--blue)}
.chk{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:500}
.chk input{width:18px;height:18px;accent-color:var(--blue)}
.go{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px}
.msg{font-size:15px;color:var(--muted);min-height:1.4em}.msg.err{color:var(--red)}.msg.ok{color:var(--green)}
.out{margin-top:18px;display:grid;gap:10px}
.dl{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#fff;border-radius:16px;border:1px solid #E5E5EA}
.dl .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.dl .fs{color:var(--muted);font-size:14px;white-space:nowrap}
.dl .save{color:var(--green);font-size:14px;font-weight:600;white-space:nowrap}
.privacy{display:flex;gap:8px;align-items:center;justify-content:center;margin:14px 0 0;color:var(--muted);font-size:14px}
.privacy svg{width:16px;height:16px;color:var(--ok)}
/* text tools */
textarea{width:100%;min-height:220px;font:15px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--ink);resize:vertical}
textarea.prose{font-family:inherit;font-size:16px}
.io{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.io label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-top:14px}
.stat{background:#fff;border-radius:14px;padding:14px;border:1px solid #E5E5EA}.stat b{display:block;font-size:26px;letter-spacing:-.02em}.stat span{color:var(--muted);font-size:13.5px}
.res{background:#fff;border-radius:16px;border:1px solid #E5E5EA;padding:18px 20px;font-size:18px}
.res b{font-size:28px;letter-spacing:-.02em}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pill{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font:inherit;font-size:14.5px;cursor:pointer}
.pill:hover{border-color:var(--ink)}.pill[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.copy{border:0;background:#fff;border-radius:10px;padding:8px 12px;font:inherit;font-size:14px;cursor:pointer;box-shadow:inset 0 0 0 1.5px var(--line)}
.copy:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.kv{display:grid;grid-template-columns:auto 1fr auto;gap:8px 12px;align-items:center;background:#fff;border-radius:16px;border:1px solid #E5E5EA;padding:14px 16px}
.kv span{color:var(--muted);font-size:14px}.kv code{font-size:15px;overflow-wrap:anywhere}
.qr-box{display:grid;place-items:center;background:#fff;border-radius:16px;padding:20px;border:1px solid #E5E5EA;min-height:240px}
.qr-box img{image-rendering:pixelated;width:240px;height:240px}
.swatch{width:100%;height:120px;border-radius:16px;border:1px solid #E5E5EA}
/* ads */
.ad{margin:28px auto;max-width:880px;min-height:100px;text-align:center}
.ad::before{content:"Advertisement";display:block;font-size:11px;color:#AEAEB2;letter-spacing:.05em;text-transform:uppercase;margin-bottom:4px}
/* content */
.content{max-width:760px;margin:56px auto 0;font-size:17.5px;line-height:1.65}
.content h2{margin-top:44px}.content h3{margin-top:26px}
.content p{margin:0 0 16px}.content ul,.content ol{padding-left:22px;margin:0 0 16px}.content li{margin-bottom:8px}
.steps{counter-reset:s;list-style:none;padding:0!important;display:grid;gap:12px}
.steps li{counter-increment:s;position:relative;padding:14px 16px 14px 58px;background:var(--gray);border-radius:16px;margin:0}
.steps li::before{content:counter(s);position:absolute;left:16px;top:13px;width:28px;height:28px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}.faq summary{cursor:pointer;font-weight:600;font-size:17.5px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";font-size:22px;line-height:1;color:var(--muted)}.faq details[open] summary::after{content:"−"}
.faq summary::-webkit-details-marker{display:none}.faq details p{margin:10px 0 0;color:#3A3A3C}
.related{max-width:880px;margin:56px auto 0}
/* footer */
.ft{margin-top:80px;background:var(--gray);padding:40px 0 30px;font-size:14px;color:var(--muted)}
.fcols{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:24px}
.fcols b{display:block;color:var(--ink);font-size:13.5px;margin-bottom:10px}
.fcols a{display:block;color:var(--muted);text-decoration:none;margin:6px 0}.fcols a:hover{color:var(--ink);text-decoration:underline}
.fbot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid var(--line);margin-top:28px;padding-top:18px}
.fbot a{color:var(--muted)}
.page{max-width:760px;margin:0 auto;padding:56px 20px 0;font-size:17px;line-height:1.65}.page h1{font-size:40px;margin-bottom:20px}.page h2{font-size:24px;margin-top:32px}
@media (max-width:900px){.srch input{width:150px}.nav{display:none}.fcols{grid-template-columns:1fr 1fr}.io{grid-template-columns:1fr}}
@media (max-width:560px){.srch{margin-left:auto}.srch input{width:44px;padding-left:34px;transition:width .2s}.srch input:focus{width:190px}.srch-r{width:calc(100vw - 32px);right:-4px}
 .tool{padding:16px;border-radius:20px;margin-top:20px}.hero{padding:40px 0 16px}.drop{min-height:170px}.opt input[type=range]{width:100%}.opt{flex:1 1 140px}.go .btn{flex:1}.kv{grid-template-columns:1fr auto}.kv span{grid-column:1/-1}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.io>div{min-width:0}input[type=file]{max-width:100%;font:inherit;font-size:14px}
.content code{overflow-wrap:anywhere;font-size:.9em}
.content{overflow-wrap:break-word}.content li,.content p{min-width:0}
[hidden]{display:none!important}.related .grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.ft .logo{margin-bottom:4px}
.btn{font-family:inherit;font-weight:600;font-size:16px;line-height:1.2}
.c-office{--cc:var(--c-office)}.fcols{grid-template-columns:1.3fr repeat(6,1fr)}@media (max-width:900px){.fcols{grid-template-columns:1fr 1fr}}
/* blog */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.pcard{display:flex;flex-direction:column;gap:8px;padding:22px;border-radius:18px;background:var(--gray);text-decoration:none;color:var(--ink);transition:background .2s,transform .2s}
.pcard:hover{background:#ECECF0;transform:translateY(-2px)}
.pcard b{font-size:19px;line-height:1.3;letter-spacing:-.01em}.pcard small{color:var(--muted);font-size:14.5px;line-height:1.45}
.ptag{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.post{margin-top:40px}.post h1{font-size:clamp(32px,4.4vw,48px);margin-top:10px}
.post pre{background:#0F1115;color:#E6E6E6;border-radius:14px;padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.55}
.post pre code{font-size:inherit;overflow-wrap:normal}
.post code{background:var(--gray);padding:1px 6px;border-radius:6px}.post pre code{background:none;padding:0}
.post h3{font-size:20px}
.byline{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:15px}
/* buy me a coffee */
.bmc{display:inline-flex;align-items:center;gap:8px;margin-top:14px;padding:10px 16px;border-radius:999px;background:#FFDD00;color:#1D1D1F!important;font-weight:600;font-size:15px;text-decoration:none!important;white-space:nowrap}
.bmc:hover{background:#FFE433}
.support{max-width:880px;margin:28px auto 0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;border-radius:20px;border:1px solid #E5E5EA}
.support b{font-size:17px}.support p{margin:4px 0 0;color:var(--muted);font-size:15px}.support .bmc{margin:0}
.ad-prev{display:grid;place-items:center;min-height:120px;border:2px dashed #C7C7CC;border-radius:14px;color:#8E8E93;font-size:14px;background:#FAFAFA}
@media (max-width:560px){.support{flex-direction:column;align-items:flex-start}}
.logo em{font-style:normal;color:var(--muted);font-weight:500}.logo svg{border-radius:8px}
.c-net{--cc:var(--c-net)}.fcols{grid-template-columns:1.3fr repeat(7,1fr)}@media (max-width:900px){.fcols{grid-template-columns:1fr 1fr}}
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;font-size:14.5px;margin-top:12px}
.tbl th,.tbl td{padding:9px 12px;text-align:left;border-bottom:1px solid #E5E5EA;white-space:nowrap}.tbl th{background:#FAFAFA;font-weight:600}
.tbl th,.tbl td{padding:8px 10px;font-size:13.5px}
/* file thumbnails */
.files li{gap:12px}
.files .th{flex:none;width:52px;height:52px;border-radius:10px;background:var(--gray);display:grid;place-items:center;overflow:hidden;border:1px solid #E5E5EA}
.files .th img{width:100%;height:100%;object-fit:cover;border-radius:0}
.files .th b{font-size:11px;font-family:"JetBrains Mono",monospace;color:#fff;background:var(--cc,var(--blue));padding:3px 5px;border-radius:5px}
.files .fmeta{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.files .fn em{font-style:normal;font-weight:700;color:var(--cc,var(--blue))}
.files .fbtn{display:flex;gap:6px;flex:none}
.files.fgrid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.files.fgrid li{flex-direction:column;align-items:stretch;padding:10px;gap:8px;cursor:grab;position:relative}
.files.fgrid li.dragging{opacity:.4}.files.fgrid li.drop-target{outline:2px dashed var(--blue);outline-offset:2px}
.files.fgrid .th{width:100%;height:auto;aspect-ratio:3/4;border-radius:8px}
.files.fgrid .th img{object-fit:contain;background:#fff}
.files.fgrid .fn{font-size:13.5px}.files.fgrid .fs{font-size:12px}
.files.fgrid .fbtn{justify-content:space-between}.files.fgrid .fbtn button{flex:1}
/* page grid */
.pages{margin-top:16px;padding:14px;background:#fff;border:1px solid #E5E5EA;border-radius:16px}
.pg-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:12px;font-size:15px}
.pg-act{display:flex;gap:6px}
.pg-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:12px;max-height:520px;overflow-y:auto;padding:4px}
.pg{position:relative;border:0;background:none;padding:0;cursor:pointer;font:inherit;display:flex;flex-direction:column;align-items:center;gap:6px}
.pg-img{position:relative;width:100%;aspect-ratio:3/4;display:grid;place-items:center;background:var(--gray);border-radius:8px;border:2px solid transparent;overflow:hidden;transition:border-color .15s}
.pg-img i{width:22px;height:22px;border-radius:50%;border:3px solid #D2D2D7;border-top-color:var(--blue);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.pg-img img{max-width:100%;max-height:100%;box-shadow:0 1px 4px rgba(0,0,0,.15);transition:transform .25s}
.pg-n{font-size:12.5px;color:var(--muted)}
.pg:hover .pg-img{border-color:#C7C7CC}
.pg.on .pg-img{border-color:var(--blue)}.pg.on .pg-img::after{content:"✓";position:absolute;top:6px;right:6px;width:22px;height:22px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700}
.pg.on .pg-n{color:var(--blue);font-weight:700}
[data-tool="delete-pdf-pages"] .pg.on .pg-img{border-color:var(--red)}[data-tool="delete-pdf-pages"] .pg.on .pg-img::after{content:"✕";background:var(--red)}
[data-tool="delete-pdf-pages"] .pg.on img{opacity:.35}[data-tool="delete-pdf-pages"] .pg.on .pg-n{color:var(--red)}
.pg[tabindex="-1"]{cursor:default}
@media (max-width:560px){.files.fgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.pg-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}}
input.mono,.opt input.mono,textarea.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"DejaVu Sans Mono",monospace}