[hidden]{display:none!important}
:root{--red:#d4252b;--red2:#b81d22;--ink:#1d1f24;--mut:#5e6470;--line:#e4e6ea;--bg:#f7f7f5;--card:#fff;--ok:#1f8a4c;--radius:14px;
--font:system-ui,-apple-system,"Segoe UI","Noto Sans","Noto Sans TC","Noto Sans SC","Noto Sans JP","Noto Sans KR","PingFang TC","Microsoft JhengHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--red2)}
img{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
/* header */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.top .wrap{display:flex;align-items:center;gap:18px;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:-.3px}
.brand img{width:30px;height:30px}
.brand b{color:var(--red)}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{padding:7px 11px;border-radius:9px;color:var(--ink);text-decoration:none;font-size:14.5px;white-space:nowrap}
.nav a:hover{background:#f1f1ef}.nav a.on{background:#fdecec;color:var(--red2);font-weight:700}
.lang{position:relative}
.lang select{appearance:none;border:1px solid var(--line);border-radius:9px;padding:7px 28px 7px 10px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23666'/%3E%3C/svg%3E") no-repeat right 10px center;font:inherit;font-size:14px;cursor:pointer}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:9px;padding:6px 10px;font-size:18px}
/* hero */
.hero{padding-top:34px;padding-bottom:10px;text-align:center}
.hero h1{font-size:clamp(26px,4.2vw,42px);line-height:1.2;margin:0 0 10px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--red)}
.hero p.sub{font-size:clamp(15px,1.8vw,18px);color:var(--mut);max-width:780px;margin:0 auto 14px}
.badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:0 0 18px;padding:0;list-style:none}
.badges li{background:#fff;border:1px solid var(--line);border-radius:99px;padding:5px 12px;font-size:13.5px;color:var(--mut)}
/* tool */
#pik-app{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 24px rgba(0,0,0,.05);padding:18px;min-height:320px;margin-bottom:26px}
#pik-app:not(.ready) .noscript{display:block}
.drop{border:2.5px dashed #d9b9ba;background:#fffafa;border-radius:12px;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;cursor:pointer;text-align:center;padding:24px;transition:.15s}
.drop:hover,.drop.hover,.drop:focus{border-color:var(--red);background:#fff2f2;outline:none}
.drop .dropicon{font-size:46px}
.drop strong{font-size:20px}
.drop span{color:var(--mut);font-size:14.5px}
.drop .lock{color:var(--ok);font-weight:600}
.workspace{display:grid;grid-template-columns:330px 1fr;gap:18px;align-items:start}
.side{display:flex;flex-direction:column;gap:12px;position:sticky;top:72px;max-height:calc(100vh - 84px);overflow:auto;padding-right:2px}
.panel{border:1px solid var(--line);border-radius:12px;padding:12px 13px;background:#fcfcfb}
.panel h3{margin:0 0 9px;font-size:15.5px;display:flex;align-items:center;gap:8px}
.num{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-size:12.5px;flex:none}
.panel label{display:block;font-size:13.5px;color:var(--mut);margin:6px 0}
.panel select,.panel input[type=number]{font:inherit;font-size:14px;border:1px solid var(--line);border-radius:8px;padding:5px 7px;background:#fff;width:100%;margin-top:3px;color:var(--ink)}
.panel input[type=range]{width:100%;accent-color:var(--red)}
.unit{display:flex;align-items:center;gap:6px;color:var(--ink)}
.unit input{width:90px!important}
.panel small{display:block;font-size:12px;color:#8a8f99}
.chk{display:flex!important;align-items:center;gap:7px;cursor:pointer;color:var(--ink)!important}
.chk input{accent-color:var(--red);width:16px;height:16px}
.chk.small{font-size:12.5px!important;color:var(--mut)!important}
.hint{font-size:12.5px;color:#7a808a;margin:8px 0 0}
.muted{color:#8a8f99;font-size:13px;margin:4px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;padding:8px 12px;font:inherit;font-size:14px;cursor:pointer;text-decoration:none;line-height:1.2}
.btn:hover{border-color:#c9ccd2;background:#fafafa}
.btn.ghost{background:transparent}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff;font-weight:700}
.btn.primary:hover{background:var(--red2)}
.btn.big{padding:13px 16px;font-size:16.5px;width:100%}
.btn.small{font-size:13px;padding:6px 10px}
.btn:disabled{opacity:.6;cursor:wait}
.btnrow{display:flex;gap:8px;flex-wrap:wrap}
.actions{display:flex;flex-direction:column;gap:8px}
.stamplist{display:flex;flex-wrap:wrap;gap:8px;margin:9px 0}
.stampitem{position:relative;width:72px;height:72px;border:2px solid var(--line);border-radius:10px;background:repeating-conic-gradient(#eee 0 25%,#fff 0 50%) 0 0/14px 14px;display:grid;place-items:center;cursor:pointer;padding:4px}
.stampitem img{max-width:100%;max-height:100%}
.stampitem.on{border-color:var(--red);box-shadow:0 0 0 3px #fbd7d8}
.stampitem .x{position:absolute;top:-8px;right:-8px;width:20px;height:20px;border-radius:50%;border:0;background:#333;color:#fff;font-size:13px;line-height:1;cursor:pointer;display:none}
.stampitem:hover .x,.stampitem.on .x{display:block}
.switch{display:flex!important;align-items:center;gap:9px;cursor:pointer;color:var(--ink)!important;font-weight:600}
.switch input{display:none}
.switch span{width:40px;height:22px;border-radius:99px;background:#cfd2d7;position:relative;flex:none;transition:.2s}
.switch span:after{content:"";position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;top:2px;left:2px;transition:.2s}
.switch input:checked+span{background:var(--red)}
.switch input:checked+span:after{left:20px}
.sgrid.off{opacity:.45;pointer-events:none}
output{float:right;color:var(--ink);font-weight:600}
.viewer{min-width:0}
.pager{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.pager select{font:inherit;border:1px solid var(--line);border-radius:8px;padding:6px 8px}
.fname{color:var(--mut);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:50%}
.stage{background:#e9e9e6;border-radius:12px;padding:14px;display:flex;justify-content:center;min-height:400px;overflow:auto}
.pagewrap{position:relative;box-shadow:0 2px 14px rgba(0,0,0,.18);background:#fff;flex:none}
.pagecanvas{display:block}
.overlay{position:absolute;inset:0;touch-action:none}
.strip{position:absolute;background-repeat:no-repeat;outline:1px dashed rgba(212,37,43,.55);pointer-events:none}
.placed{position:absolute;cursor:move;touch-action:none;outline:1px dashed transparent}
.placed img{width:100%;height:100%;display:block;user-select:none;pointer-events:none}
.placed:hover{outline-color:rgba(212,37,43,.6)}
.placed.sel{outline:2px solid var(--red)}
.placed .rz{position:absolute;right:-7px;bottom:-7px;width:15px;height:15px;background:#fff;border:2px solid var(--red);border-radius:4px;cursor:nwse-resize;display:none}
.placed .ptools{position:absolute;top:-34px;right:0;display:none;gap:4px}
.placed .ptools button{border:0;background:#222;color:#fff;border-radius:7px;width:28px;height:28px;cursor:pointer;font-size:14px}
.placed.sel .rz,.placed.sel .ptools{display:flex}
.filelist{list-style:none;margin:0 0 8px;padding:0;max-height:180px;overflow:auto}
.filelist li{display:flex;justify-content:space-between;gap:8px;font-size:13px;padding:5px 7px;border-radius:7px;background:#fff;border:1px solid var(--line);margin-bottom:5px}
.filelist li span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.filelist button{border:0;background:none;cursor:pointer;color:#999;font-size:16px}
.progress{height:8px;background:#eee;border-radius:9px;overflow:hidden}.progress div{height:100%;width:0;background:var(--red);transition:width .2s}
/* bg remover */
.bgcols{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bgcols figure{margin:0}.bgcols figcaption{font-weight:700;margin-bottom:6px}
.bgbox{border:1px solid var(--line);border-radius:12px;min-height:260px;display:grid;place-items:center;padding:12px;background:#fff}
.bgbox canvas{max-width:100%;max-height:420px}
.checker{background:repeating-conic-gradient(#e5e5e5 0 25%,#fff 0 50%) 0 0/18px 18px}
.bgctl{margin-top:14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:6px 18px;align-items:center}
.bgctl .btnrow{grid-column:1/-1}
/* content */
.content{max-width:860px;margin:0 auto}
.content h2{font-size:clamp(21px,2.6vw,27px);margin:34px 0 12px;letter-spacing:-.3px}
.content p,.content li{font-size:16px;color:#33363c}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:10px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px 12px 54px;position:relative}
.steps li:before{content:counter(s);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:700}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;padding:0;list-style:none}
.features li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}
.features b{display:block;margin-bottom:4px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 15px;margin-bottom:9px}
.faq summary{cursor:pointer;font-weight:700;font-size:16px}
.faq details p{margin:9px 0 2px}
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:10px 0}
.tools a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;color:var(--ink)}
.tools a:hover{border-color:var(--red)}
.tools a b{display:block;color:var(--red2);margin-bottom:3px}
.ad{margin:22px auto;text-align:center;min-height:0}
.ad ins{display:block}
.doc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 26px 20px;margin:24px auto}
/* footer */
footer{margin-top:50px;background:#1d1f24;color:#c6c9cf;padding:28px 0;font-size:14px}
footer a{color:#fff;text-decoration:none;margin-right:16px}
footer .langs a{color:#aeb2ba;margin-right:12px;font-size:13px}
footer .fine{color:#8b9099;font-size:12.5px;margin-top:10px}
#pik-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:99;align-items:center}
.toast{background:#222;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;box-shadow:0 6px 20px rgba(0,0,0,.2);max-width:90vw}
.toast.error{background:#b3261e}.toast.ok{background:var(--ok)}
.noscript{display:none;color:#b3261e;text-align:center;padding:20px}
@media (max-width:900px){
 .workspace{grid-template-columns:1fr}
 .side{position:static;max-height:none}
 .nav{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;flex-direction:column;padding:8px;border-bottom:1px solid var(--line)}
 .nav.open{display:flex}
 .menu-btn{display:block}
 .bgcols{grid-template-columns:1fr}
 .stage{padding:8px}
 .lang select{max-width:118px}
 .brand{font-size:18px}
 .top .wrap{gap:10px}
 .hero h1{font-size:25px}
}
.langbar{background:#1d1f24;color:#fff;text-align:center;padding:8px 40px;font-size:14px;position:relative}
.langbar a{color:#fff;font-weight:700}
.langbar button{position:absolute;right:10px;top:4px;background:none;border:0;color:#fff;font-size:20px;cursor:pointer}

.ico{width:1em;height:1em;vertical-align:-.15em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.dropicon .ico{width:52px;height:52px;color:var(--red);stroke-width:1.6}
.ptools .ico{width:16px;height:16px}