:root{
  --bg:#F5F7F6; --surface:#FFFFFF; --ink:#16212B; --muted:#526070; --line:#D6DEDB;
  --accent:#0B6E66; --accent-hover:#085650; --accent-soft:#E3F1EF;
  --tag:#FFE07A; --tag-ink:#3D2E00; --ok:#1F7A3A; --err:#B42318;
  --r-sm:6px; --r-md:10px; --r-lg:16px;
  --font:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--font)}
a{color:var(--accent)}
a:hover{color:var(--accent-hover)}
:focus-visible{outline:3px solid #1F6FEB;outline-offset:2px;border-radius:4px}
img{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:8px;background:#fff;padding:8px 12px;z-index:10}

/* header */
.top{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:5}
.top-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;color:var(--ink);text-decoration:none;font-weight:700;font-size:19px;letter-spacing:-.01em}
.logo svg{width:28px;height:28px}
.menu summary{list-style:none;cursor:pointer;font-weight:600;padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:15px}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--ink);color:#fff;border-color:var(--ink)}
.menu-panel{position:absolute;right:16px;left:16px;top:56px;max-width:760px;margin-left:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 12px 40px rgba(22,33,43,.14);padding:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.menu-col a{display:block;color:var(--ink);text-decoration:none;padding:4px 0;font-size:15px}
.menu-col a:hover{color:var(--accent)}
.menu-h{margin:0 0 6px;font-size:13px;font-weight:700;color:var(--muted)}

/* hero + tool */
.hero{padding:28px 0 12px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:6px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(28px,4.4vw,42px);line-height:1.12;letter-spacing:-.02em;margin:0 0 10px;font-weight:700;max-width:22ch}
.lead{color:var(--muted);font-size:18px;margin:0 0 20px;max-width:62ch}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:0 1px 0 rgba(22,33,43,.04)}
.assure{font-size:14px;color:var(--muted);margin:10px 2px 0;display:flex;gap:6px;align-items:center}
.assure::before{content:"";width:14px;height:14px;flex:none;background:var(--ok);-webkit-mask:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2 4 5v6c0 5 3.4 9.5 8 11 4.6-1.5 8-6 8-11V5l-8-3z"/></svg>') center/contain no-repeat;mask:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2 4 5v6c0 5 3.4 9.5 8 11 4.6-1.5 8-6 8-11V5l-8-3z"/></svg>') center/contain no-repeat}

/* dropzone */
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;min-height:200px;border:2px dashed #A9BAB5;border-radius:var(--r-md);background:var(--accent-soft);padding:24px;cursor:pointer;transition:background .15s,border-color .15s}
.drop:hover,.drop.over{border-color:var(--accent);background:#D3EAE6}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop .btn{pointer-events:none}
.drop small{color:var(--muted);font-size:14px}
.drop.has-file{min-height:auto;flex-direction:row;justify-content:flex-start;text-align:left;border-style:solid;padding:12px}
.drop.has-file .drop-hint{display:none}
.thumb{width:64px;height:64px;object-fit:cover;border-radius:var(--r-sm);background:#fff;border:1px solid var(--line)}
.file-meta{font-size:15px}
.file-meta b{display:block;word-break:break-all}

/* controls */
.controls{display:grid;gap:14px;margin-top:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.field label,.field .lbl{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field input:not([type=checkbox]):not([type=range]):not([type=file]),.field select{width:100%;height:46px;padding:0 12px;font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1px solid #B9C6C2;border-radius:var(--r-sm)}
.field input:focus,.field select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}
.unit{display:flex}
.unit input{border-radius:var(--r-sm) 0 0 var(--r-sm)!important}
.unit select,.unit span{width:auto!important;border-radius:0 var(--r-sm) var(--r-sm) 0!important;border-left:0!important;background:#EEF2F1!important;padding:0 12px;display:flex;align-items:center;border:1px solid #B9C6C2;font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font:inherit;font-size:15px;padding:8px 14px;border-radius:999px;border:1px solid #B9C6C2;background:#fff;color:var(--ink);cursor:pointer}
.chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.check{display:flex;gap:8px;align-items:center;font-size:15px;margin-top:4px}
.check input{width:18px;height:18px;accent-color:var(--accent)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;font:inherit;font-weight:700;font-size:16px;border-radius:var(--r-md);border:0;background:var(--accent);color:#fff;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--accent-hover);color:#fff}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid #B9C6C2}
.btn.ghost:hover{background:#EEF2F1;color:var(--ink)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}

/* result */
.result{margin-top:18px;border-top:1px solid var(--line);padding-top:18px;display:none}
.result.show{display:grid;gap:16px;grid-template-columns:minmax(0,1fr)}
@media(min-width:720px){.result.show{grid-template-columns:260px minmax(0,1fr);align-items:start}}
.preview{background:repeating-conic-gradient(#EEF2F1 0 25%,#fff 0 50%) 0 0/16px 16px;border:1px solid var(--line);border-radius:var(--r-md);padding:8px;text-align:center}
.preview img,.preview canvas{max-height:260px;max-width:100%;display:block;margin:0 auto}
.readout{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:10px}
.size-tag{display:inline-flex;align-items:baseline;gap:4px;background:var(--tag);color:var(--tag-ink);font-weight:700;font-size:28px;line-height:1;padding:10px 14px 10px 22px;border-radius:4px 10px 10px 4px;position:relative;font-variant-numeric:tabular-nums}
.size-tag::before{content:"";position:absolute;left:8px;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:var(--bg)}
.size-tag small{font-size:15px;font-weight:600}
.was{color:var(--muted);font-size:15px}
.was s{text-decoration-thickness:1.5px}
.note{font-size:15px;margin:6px 0 0}
.note.ok{color:var(--ok)}
.note.err{color:var(--err)}
.specs{font-size:15px;color:var(--muted);margin:0}
.progress{height:4px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:14px;display:none}
.progress.show{display:block}
.progress i{display:block;height:100%;width:30%;background:var(--accent);animation:load 1s ease-in-out infinite}
@keyframes load{0%{transform:translateX(-100%)}100%{transform:translateX(340%)}}
@media (prefers-reduced-motion:reduce){.progress i{animation:none;width:100%}}

/* crop */
.crop-stage{position:relative;display:inline-block;overflow:hidden;max-width:100%;touch-action:none;user-select:none;line-height:0}
.crop-stage img{max-height:420px;max-width:100%}
.crop-box{position:absolute;border:2px solid #fff;box-shadow:0 0 0 9999px rgba(22,33,43,.55);cursor:move}
.crop-box::after{content:"";position:absolute;inset:0;background:linear-gradient(to right,transparent 33%,rgba(255,255,255,.5) 33%,rgba(255,255,255,.5) 33.6%,transparent 33.6%,transparent 66.4%,rgba(255,255,255,.5) 66.4%,rgba(255,255,255,.5) 67%,transparent 67%),linear-gradient(to bottom,transparent 33%,rgba(255,255,255,.5) 33%,rgba(255,255,255,.5) 33.6%,transparent 33.6%,transparent 66.4%,rgba(255,255,255,.5) 66.4%,rgba(255,255,255,.5) 67%,transparent 67%)}
.crop-h{position:absolute;width:24px;height:24px;right:-3px;bottom:-3px;background:#fff;border:2px solid var(--accent);border-radius:50%;cursor:nwse-resize;z-index:2}
.crop-wrap{text-align:center;margin-top:14px;display:none}
.crop-wrap.show{display:block}

/* file list (image to pdf) */
.files{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px}
.files li{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:6px;font-size:12px;text-align:center;position:relative}
.files img{width:100%;height:90px;object-fit:contain}
.files button{position:absolute;top:2px;right:2px;width:26px;height:26px;border-radius:50%;border:0;background:var(--ink);color:#fff;cursor:pointer;font-size:14px;line-height:1}
.files .mv{position:static;width:auto;height:auto;border-radius:4px;background:#EEF2F1;color:var(--ink);padding:2px 8px;margin:4px 2px 0}

/* content */
.ad{margin:24px auto;max-width:1040px;padding:0 16px;min-height:100px}
.content{padding-top:24px;padding-bottom:48px}
.content > *{max-width:70ch}
.content h2{font-size:26px;letter-spacing:-.01em;line-height:1.25;margin:40px 0 12px}
.content h3{font-size:20px;margin:28px 0 8px}
.content p,.content li{color:#2A3742}
.steps{padding-left:22px}
.steps li{margin:6px 0;padding-left:4px}
.steps li::marker{font-weight:700;color:var(--accent)}
.content table{border-collapse:collapse;width:100%;font-size:15px;margin:12px 0;display:block;overflow-x:auto}
.content th,.content td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap}
.content th{background:#EAF0EE;font-weight:600}
.faqs{border-top:1px solid var(--line)}
.faq{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;padding:14px 28px 14px 0;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:10px;font-size:22px;color:var(--accent)}
.faq[open] summary::after{content:"−"}
.faq div{padding:0 0 14px}
.faq div p{margin:0 0 8px}
.related,.grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;max-width:none!important}
.related a,.grid a{display:block;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px;text-decoration:none;color:var(--ink)}
.related a:hover,.grid a:hover{border-color:var(--accent)}
.related strong,.grid strong{display:block;margin-bottom:2px}
.related span,.grid span{font-size:14px;color:var(--muted);line-height:1.45;display:block}
.updated{font-size:14px;color:var(--muted);margin-top:32px}

/* home */
.home-hero{padding:40px 0 8px}
.home-hero h1{max-width:18ch;font-size:clamp(32px,5.4vw,54px)}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.quick a{display:inline-flex;align-items:baseline;gap:2px;background:var(--tag);color:var(--tag-ink);text-decoration:none;font-weight:700;padding:8px 14px;border-radius:4px 10px 10px 4px;font-variant-numeric:tabular-nums}
.quick a:hover{background:#FFD34D;color:var(--tag-ink)}
.cat{margin:28px 0}
.cat h2{font-size:22px;margin:0}
.cat-d{color:var(--muted);margin:2px 0 12px;font-size:15px}

/* footer */
.foot{background:var(--ink);color:#C9D3D0;padding:40px 0 24px;font-size:15px}
.foot a{color:#E6ECEA;text-decoration:none}
.foot a:hover{color:#fff;text-decoration:underline}
.foot .menu-h{color:#8FA09B}
.foot .menu-col a{color:#E6ECEA}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
.foot-base{border-top:1px solid #2E3B46;margin-top:28px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.foot-base p{margin:0}
.foot-base a{margin-right:14px}