@font-face{font-family:PJS;font-weight:400;font-display:swap;src:url(/static/fonts/pjs-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:PJS;font-weight:500;font-display:swap;src:url(/static/fonts/pjs-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:PJS;font-weight:700;font-display:swap;src:url(/static/fonts/pjs-700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:PJS;font-weight:800;font-display:swap;src:url(/static/fonts/pjs-800.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:PJS;font-weight:400;font-display:swap;src:url(/static/fonts/pjs-ext-400.woff2) format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:PJS;font-weight:500;font-display:swap;src:url(/static/fonts/pjs-ext-500.woff2) format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:PJS;font-weight:700;font-display:swap;src:url(/static/fonts/pjs-ext-700.woff2) format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:PJS;font-weight:800;font-display:swap;src:url(/static/fonts/pjs-ext-800.woff2) format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{--acc:#3563e9;--acc-d:#2a50c4;--acc-soft:#e4ecff;--ink:#16181d;--mut:#5d6472;--bg:#fff;--soft:#f3f5fb;--line:#e7e9f0;--ok:#138a4b;--ok-soft:#e3f5eb;--err:#c8322b;--err-soft:#fdecea;
--pdf:#e0412f;--pdf-bg:#ffe8e6;--img:#1f73d6;--img-bg:#e2f0ff;--util:#6c4ce0;--util-bg:#efe8ff;--r:16px;
--font:PJS,system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","PingFang SC","Microsoft YaHei","Noto Sans Devanagari",sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.5}
a{color:inherit;text-decoration:none}
img,svg,canvas{max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
.ico{width:1em;height:1em;flex:none;vertical-align:-.125em}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* header */
.hd{height:68px;display:flex;align-items:center;padding:0 32px;gap:24px;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.logo{font-weight:800;font-size:21px;display:flex;gap:9px;align-items:center;letter-spacing:-.3px}
.logo i{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#3563e9,#7b5cf5);display:grid;place-items:center;color:#fff;font-style:normal}
.logo i svg{width:17px;height:17px}
.nav{display:flex;gap:4px;font-weight:600;font-size:15px}
.nav>div{position:relative}
.nav>div>a{display:block;padding:8px 12px;border-radius:8px;cursor:pointer}
.nav>div>a:hover,.nav>div:focus-within>a{background:var(--soft)}
.mega{display:none;position:absolute;top:100%;left:0;padding-top:8px}
.nav>div:hover .mega,.nav>div:focus-within .mega{display:block}
.mega .in{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 16px 40px rgba(20,24,40,.12);padding:10px;display:grid;grid-template-columns:repeat(2,230px);gap:2px}
.mega a{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:9px;font-weight:600;font-size:14px}
.mega a:hover{background:var(--soft)}
.mega a .ic{width:30px;height:30px;border-radius:9px}
.mega a .ic svg{width:16px;height:16px}
.pill{margin-left:auto;background:var(--soft);border-radius:99px;padding:9px 16px;font-weight:600;font-size:14px;display:flex;gap:7px;align-items:center;white-space:nowrap}
.pill svg{color:var(--ok)}
.burger{display:none;margin-left:auto;border:0;background:var(--soft);border-radius:10px;width:42px;height:42px;cursor:pointer}
.mnav{display:none}

/* icons */
.ic{flex:none;width:48px;height:48px;border-radius:14px;display:grid;place-items:center}
.ic svg{width:24px;height:24px}
.pdf .ic,.ic.pdf{background:var(--pdf-bg);color:var(--pdf)}
.img .ic,.ic.img{background:var(--img-bg);color:var(--img)}
.util .ic,.ic.util{background:var(--util-bg);color:var(--util)}

/* home */
.hero{max-width:1180px;margin:0 auto;padding:60px 24px 40px;display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:50px;line-height:1.08;margin:0 0 18px;letter-spacing:-1.5px}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero p{font-size:19px;color:var(--mut);line-height:1.55;margin:0 0 24px}
.ticks{display:flex;flex-direction:column;gap:10px;font-weight:600}
.ticks span{display:flex;align-items:center;gap:10px}
.ticks span::before{content:"✓";display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--acc-soft);color:var(--acc);font-size:12px;flex:none}
.sec{max-width:1180px;margin:0 auto;padding:30px 24px}
.sec>h2{font-size:28px;margin:0 0 6px;letter-spacing:-.5px}
.lead{color:var(--mut);margin:0 0 22px}
.tabs{display:inline-flex;flex-wrap:wrap;background:var(--soft);border-radius:12px;padding:5px;margin-bottom:22px}
.tabs button{border:0;background:transparent;padding:10px 18px;border-radius:9px;font-weight:700;font-size:14px;cursor:pointer;color:var(--mut)}
.tabs button.on{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.08)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.card{display:flex;gap:14px;align-items:center;padding:16px;border-radius:var(--r);border:1px solid var(--line);transition:background .15s,border-color .15s;background:#fff}
.card:hover{background:var(--soft);border-color:#d8ddea}
.card h3{margin:0 0 3px;font-size:16px}
.card p{margin:0;color:var(--mut);font-size:13.5px;line-height:1.4}
.card[hidden]{display:none}
.trust{background:var(--soft);margin-top:40px}
.trust .sec{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:50px 24px}
.trust .sec>div{background:#fff;border-radius:18px;padding:24px}
.trust .sec>div>svg{width:28px;height:28px;color:var(--acc)}
.trust h3{margin:10px 0 6px;font-size:18px}
.trust p{margin:0;color:var(--mut);line-height:1.55}

/* dropbox */
.dropbox{background:var(--acc);border-radius:22px;padding:14px;box-shadow:0 20px 50px rgba(53,99,233,.28);transition:background .15s}
.dropbox .in{border:2px dashed rgba(255,255,255,.55);border-radius:14px;padding:54px 20px;text-align:center;color:#fff;transition:border-color .15s,background .15s}
.dropbox.drag .in{border-color:#fff;background:rgba(255,255,255,.1)}
.dropbox .big svg{width:44px;height:44px}
.dropbox .choose{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--acc);border:0;border-radius:12px;padding:16px 34px;font-weight:800;font-size:18px;margin:14px 0 10px;cursor:pointer}
.dropbox .choose:hover{background:#f2f5ff}
.dropbox small{display:block;opacity:.9;font-size:14px}
.dropbox .alt{margin-top:12px;font-size:14px}
.dropbox .alt button{background:transparent;border:0;color:#fff;text-decoration:underline;cursor:pointer;font-weight:600}
.suggest{display:none;margin-top:14px;background:#fff;border-radius:14px;padding:12px;color:var(--ink);text-align:left}
.suggest.on{display:block}
.suggest b{display:block;font-size:14px;margin:2px 4px 8px}
.suggest .grid{grid-template-columns:1fr 1fr;gap:8px}
.suggest .card{padding:10px}
.suggest .card .ic{width:36px;height:36px;border-radius:10px}
.suggest .card .ic svg{width:18px;height:18px}

/* tool page */
.tophead{max-width:1000px;margin:0 auto;padding:36px 24px 8px;text-align:center}
.crumb{color:var(--mut);font-size:14px;margin-bottom:10px}
.crumb a:hover{color:var(--acc)}
.tophead h1{font-size:42px;margin:0 0 10px;letter-spacing:-1px;line-height:1.15}
.tophead .sub{color:var(--mut);font-size:18px;margin:0 0 26px}
.app{max-width:1000px;margin:0 auto;padding:0 24px}
.chips{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:18px 0 0}
.chips span{background:var(--soft);border-radius:99px;padding:8px 14px;font-size:13.5px;font-weight:600;display:flex;gap:6px;align-items:center}
.chips svg{color:var(--ok)}

/* workspace (shared by all engines) */
.ws{border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 10px 40px rgba(20,24,40,.06);overflow:hidden}
.ws-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--soft)}
.ws-bar .grow{flex:1}
.ws-body{padding:18px}
.ws-foot{display:flex;gap:10px;align-items:center;justify-content:flex-end;flex-wrap:wrap;padding:14px 18px;border-top:1px solid var(--line)}
.ws-foot .note{margin-right:auto;color:var(--mut);font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:13px 22px;font-weight:700;font-size:16px;cursor:pointer;background:var(--acc);color:#fff;transition:background .15s;text-align:center}
.btn:hover{background:var(--acc-d)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.lg{padding:16px 30px;font-size:18px}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--soft)}
.btn.sm{padding:8px 13px;font-size:14px;border-radius:10px}
.btn svg{width:18px;height:18px}
.iconbtn{border:1px solid var(--line);background:#fff;border-radius:9px;width:34px;height:34px;display:inline-grid;place-items:center;cursor:pointer;color:var(--mut)}
.iconbtn:hover{background:var(--soft);color:var(--ink)}
.iconbtn svg{width:17px;height:17px}

.opts{display:flex;flex-wrap:wrap;gap:16px 22px;align-items:flex-end}
.opt{display:flex;flex-direction:column;gap:6px;min-width:140px}
.opt>label,.opt>.lbl{font-weight:700;font-size:14px}
.opt .hint{font-size:12.5px;color:var(--mut)}
.inp,select.inp,textarea.inp{border:1px solid #d6dae4;border-radius:10px;padding:10px 12px;background:#fff;font-size:15px;min-width:0}
.inp:focus{outline:2px solid var(--acc-soft);border-color:var(--acc)}
textarea.inp{width:100%;min-height:160px;resize:vertical;line-height:1.5}
.seg{display:inline-flex;background:var(--soft);border-radius:10px;padding:4px;flex-wrap:wrap}
.seg button{border:0;background:transparent;padding:8px 14px;border-radius:8px;font-weight:700;font-size:14px;cursor:pointer;color:var(--mut)}
.seg button.on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.check{display:flex;gap:8px;align-items:center;font-weight:600;font-size:14px;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--acc)}
input[type=range]{accent-color:var(--acc);width:180px}
input[type=color]{width:44px;height:38px;border:1px solid #d6dae4;border-radius:10px;padding:3px;background:#fff}

.flist{display:flex;flex-direction:column;gap:8px}
.fitem{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff}
.fitem .th{width:44px;height:56px;border-radius:6px;background:var(--soft);flex:none;overflow:hidden;display:grid;place-items:center;border:1px solid var(--line)}
.fitem .th img,.fitem .th canvas{width:100%;height:100%;object-fit:cover}
.fitem .nm{flex:1;min-width:0}
.fitem .nm b{display:block;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fitem .nm span{font-size:13px;color:var(--mut)}
.fitem .grip{cursor:grab;color:var(--mut)}
.fitem.dragging{opacity:.4}

.pages{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:14px}
.page{position:relative;border:2px solid var(--line);border-radius:12px;padding:8px;background:#fff;text-align:center;cursor:pointer;user-select:none;transition:border-color .12s}
.page canvas,.page img{display:block;margin:0 auto;box-shadow:0 1px 4px rgba(0,0,0,.15);background:#fff;transition:transform .2s}
.page .pn{font-size:13px;color:var(--mut);margin-top:6px;font-weight:600}
.page.sel{border-color:var(--acc);background:var(--acc-soft)}
.page.del{opacity:.35}
.page.del::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(45deg,transparent 0 10px,rgba(200,50,43,.12) 10px 20px);border-radius:10px}
.page .pact{position:absolute;top:6px;right:6px;display:flex;gap:4px;opacity:0;transition:opacity .12s}
.page:hover .pact,.page:focus-within .pact{opacity:1}
.page .pact .iconbtn{width:30px;height:30px}
.page.dragging{opacity:.4}

.result{text-align:center;padding:34px 20px}
.result .ok{width:64px;height:64px;border-radius:50%;background:var(--ok-soft);color:var(--ok);display:grid;place-items:center;margin:0 auto 14px}
.result .ok svg{width:32px;height:32px}
.result h2{margin:0 0 6px;font-size:24px}
.result p{color:var(--mut);margin:0 0 20px}
.result .acts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.stat{display:inline-flex;gap:8px;align-items:center;background:var(--ok-soft);color:var(--ok);font-weight:700;border-radius:99px;padding:6px 12px;font-size:14px}
.stat.bad{background:var(--soft);color:var(--mut)}

.progress{padding:40px 20px;text-align:center}
.progress .bar{height:10px;background:var(--soft);border-radius:99px;overflow:hidden;max-width:420px;margin:14px auto 0}
.progress .bar i{display:block;height:100%;width:0;background:var(--acc);transition:width .2s}
.progress .spin{width:38px;height:38px;border:4px solid var(--acc-soft);border-top-color:var(--acc);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}

.alert{padding:12px 14px;border-radius:12px;font-size:14.5px;font-weight:600;margin:0 0 14px;display:flex;gap:8px;align-items:flex-start}
.alert.err{background:var(--err-soft);color:var(--err)}
.alert.info{background:var(--acc-soft);color:var(--acc-d)}
.alert.ok{background:var(--ok-soft);color:var(--ok)}
.muted{color:var(--mut)}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.split2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stage{background:repeating-conic-gradient(#f1f3f7 0 25%,#fff 0 50%) 0 0/20px 20px;border-radius:14px;border:1px solid var(--line);display:grid;place-items:center;min-height:260px;overflow:hidden;position:relative}
.stage canvas,.stage img{max-height:70vh;display:block}
.out{background:var(--soft);border-radius:12px;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;white-space:pre-wrap;word-break:break-all;max-height:360px;overflow:auto}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:14.5px}
.kv dt{font-weight:700}
.kv dd{margin:0;color:var(--mut);word-break:break-word}

/* article */
.art{max-width:780px;margin:44px auto 60px;padding:0 24px;line-height:1.7;font-size:17px}
.art h2{font-size:25px;margin:34px 0 8px;letter-spacing:-.3px;line-height:1.3}
.art h3{font-size:19px;margin:22px 0 6px}
.art ol,.art ul{padding-left:22px}
.art li{margin:6px 0}
.art table{width:100%;border-collapse:collapse;font-size:15px;margin:14px 0}
.art th,.art td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.art th{background:var(--soft)}
.art a{color:var(--acc);font-weight:600}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:14px 0 0;padding:0;list-style:none;counter-reset:s}
.steps li{background:var(--soft);border-radius:14px;padding:18px;margin:0;counter-increment:s;font-size:15.5px;line-height:1.5}
.steps li::before{content:counter(s);display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--acc);color:#fff;font-weight:800;margin-bottom:10px}
.faq details{border:1px solid var(--line);border-radius:12px;padding:0 16px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq summary::after{content:"+";font-size:20px;color:var(--mut)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 14px}
.related{max-width:1000px;margin:0 auto 60px;padding:0 24px}
.related h2{font-size:22px;margin:0 0 14px}
.related .grid{grid-template-columns:repeat(3,1fr)}
.variants{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.variants a{background:var(--soft);border-radius:99px;padding:7px 13px;font-size:14px;font-weight:600;color:var(--ink)}
.variants a:hover{background:var(--acc-soft);color:var(--acc)}

/* hub + static pages */
.hubhead{max-width:1180px;margin:0 auto;padding:44px 24px 10px}
.hubhead h1{font-size:40px;margin:0 0 8px;letter-spacing:-1px}
.hubhead p{color:var(--mut);font-size:18px;margin:0;max-width:720px}
.doc{max-width:760px;margin:0 auto;padding:44px 24px 70px;line-height:1.7;font-size:16.5px}
.doc h1{font-size:38px;letter-spacing:-1px;line-height:1.15}
.doc h2{font-size:22px;margin-top:30px}

/* footer */
.ft{border-top:1px solid var(--line);background:var(--soft);margin-top:30px}
.ft .in{max-width:1180px;margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:24px;font-size:14px}
.ft b{display:block;margin-bottom:10px;font-size:14px}
.ft a{display:block;color:var(--mut);margin:6px 0}
.ft a:hover{color:var(--acc)}
.ft .about{color:var(--mut);line-height:1.6}
.ft .bottom{max-width:1180px;margin:0 auto;padding:16px 24px 28px;color:var(--mut);font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media(max-width:1000px){.grid,.related .grid{grid-template-columns:1fr 1fr}.ft .in{grid-template-columns:1fr 1fr}}
@media(max-width:860px){
.nav,.pill{display:none}.burger{display:grid;place-items:center}
.hd{padding:0 16px;height:60px}
.mnav.on{display:block;position:fixed;inset:60px 0 0;background:#fff;z-index:19;overflow:auto;padding:14px 16px 40px}
.mnav b{display:block;margin:14px 4px 6px;color:var(--mut);font-size:13px;text-transform:uppercase;letter-spacing:.5px}
.mnav a{display:flex;gap:10px;align-items:center;padding:9px 4px;font-weight:600}
.mnav .ic{width:32px;height:32px;border-radius:9px}.mnav .ic svg{width:17px;height:17px}
.hero{grid-template-columns:1fr;padding:30px 16px;gap:26px}.hero h1{font-size:34px}
.grid,.related .grid,.trust .sec,.steps,.split2,.suggest .grid{grid-template-columns:1fr}
.sec{padding:24px 16px}.trust .sec{padding:34px 16px}
.tophead{padding:24px 16px 4px}.tophead h1{font-size:30px}.tophead .sub{font-size:16px}
.app{padding:0 12px}.dropbox .in{padding:40px 14px}.dropbox .choose{width:100%;justify-content:center}
.ws-body{padding:14px}.ws-foot .btn{flex:1}.ws-foot .note{width:100%;margin:0}
.pages{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:10px}
.page .pact{opacity:1}
.art{padding:0 16px;font-size:16.5px}.related{padding:0 16px}
.hubhead{padding:28px 16px 6px}.hubhead h1{font-size:30px}
.ft .in{grid-template-columns:1fr 1fr;padding:30px 16px}
.opt{min-width:0}.opts .opt{flex:1 1 140px}
}
[dir=rtl] .ws-foot .note{margin-right:0;margin-left:auto}
[dir=rtl] .pill{margin-left:0;margin-right:auto}
/* article: wide tables scroll inside themselves, long codes/hashes wrap (no page overflow on phones) */
.art table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
.art code{word-break:break-all;overflow-wrap:anywhere}
.art td,.art th{overflow-wrap:anywhere}
/* domain logo text: shrink on narrow screens */
@media(max-width:420px){.logo{font-size:16px;gap:7px;letter-spacing:-.4px}.logo i{width:28px;height:28px}}
.logo img{width:32px;height:32px;border-radius:8px;flex:none}
@media(max-width:420px){.logo img{width:28px;height:28px}}