:root{
  --bg:#f7f8fb;--card:#fff;--text:#0f172a;--muted:#5b6478;--line:#e3e7ef;
  --brand:#2952cc;--brand-2:#1e40af;--accent:#0ea5a4;--ok:#0f8a5f;--err:#d1342b;--soft:#edf2ff;
  --pdf:#e5484d;--img:#0ea5a4;--conv:#2952cc;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0b1120;--card:#121a2b;--text:#e8edf7;--muted:#9aa6bd;--line:#24304a;--soft:#18233d;--brand:#6d8dff;--brand-2:#4f6fe8;--shadow:none}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--brand)}
img{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}

/* Header */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:800;font-size:20px;letter-spacing:-.3px}
.logo{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#2952cc,#0ea5a4);display:grid;place-items:center;color:#fff;font-weight:800}
.nav{display:flex;gap:6px;align-items:center}
.nav a{color:var(--text);text-decoration:none;font-weight:600;font-size:15px;padding:8px 12px;border-radius:10px}
.nav a:hover,.nav a[aria-current=page]{background:var(--soft);color:var(--brand)}
.nav-toggle{display:none;background:none;border:0;font-size:24px;color:var(--text);cursor:pointer;padding:6px}
@media (max-width:720px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--card);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 16px 16px}
  body.nav-open .nav{display:flex}
}

/* Breadcrumb + hero */
.crumbs{font-size:13px;color:var(--muted);padding-top:18px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.hero{text-align:center;padding:26px 0 6px}
.hero{background:radial-gradient(1000px 300px at 50% -60px,rgba(41,82,204,.10),transparent 70%)}
.hero h1{font-size:clamp(28px,5vw,42px);margin:0 0 10px;letter-spacing:-.6px;line-height:1.2}
.hero p{color:var(--muted);margin:0 auto;max-width:600px;font-size:17px}
.badge{display:inline-flex;gap:6px;align-items:center;background:var(--soft);color:var(--brand);padding:6px 12px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:14px}

/* Tool card */
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin-top:22px;box-shadow:var(--shadow)}
.drop{border:2px dashed var(--line);border-radius:14px;padding:38px 16px;text-align:center;cursor:pointer;transition:.2s}
.drop:hover,.drop.over{border-color:var(--brand);background:var(--soft)}
.drop .icon{font-size:34px;line-height:1}
.drop strong{display:block;font-size:18px;margin-top:8px}
.drop small{display:block;color:var(--muted);margin-top:6px}
.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-top:18px}
label{font-size:13px;font-weight:600;color:var(--muted);display:block;margin-bottom:6px}
select,input[type=number],input[type=text]{width:100%;padding:10px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:15px}
input[type=range]{width:100%;accent-color:var(--brand)}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
button,.btn{border:0;border-radius:12px;padding:12px 20px;font-size:15px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block}
.primary{background:var(--brand);color:#fff;box-shadow:0 2px 8px rgba(41,82,204,.25)}
.primary:hover:not(:disabled){background:var(--brand-2)}
.ghost{background:var(--soft);color:var(--brand)}
button:disabled{opacity:.5;cursor:not-allowed}
.note{font-size:13px;color:var(--muted);margin-top:12px}
.list{margin-top:18px;display:grid;gap:10px}
.item{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:10px}
.item img{width:52px;height:52px;object-fit:cover;border-radius:8px;flex-shrink:0;background:var(--soft)}
.meta{flex:1;min-width:0}
.name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.size{font-size:13px;color:var(--muted)}
.done{color:var(--ok);font-weight:700}
.fail{color:var(--err);font-weight:600}
.item a{text-decoration:none;background:var(--soft);color:var(--brand);padding:8px 12px;border-radius:10px;font-weight:700;font-size:14px;white-space:nowrap}

/* Features */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:26px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.feature b{display:block;margin-bottom:4px}
.feature span{font-size:14px;color:var(--muted)}

/* Content */
.content{max-width:760px;margin:0 auto}
section h2{font-size:24px;margin:42px 0 8px;letter-spacing:-.3px}
section h3{font-size:18px;margin:22px 0 6px}
.steps{padding-left:22px}
.steps li{margin:8px 0}
table{width:100%;border-collapse:collapse;margin-top:12px;font-size:15px;background:var(--card);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{background:var(--soft)}
details{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-top:10px;background:var(--card)}
summary{font-weight:700;cursor:pointer}
details p{margin:8px 0 2px;color:var(--muted)}

/* Tool grid */
.tools{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:14px}
.tool{display:block;border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--card);text-decoration:none;color:var(--text);transition:.15s}
.tool:hover{border-color:var(--brand);transform:translateY(-2px)}
.tool .ti{font-size:20px;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--soft)}
.tool.pdf .ti{background:rgba(229,72,77,.1)}.tool.image .ti{background:rgba(14,165,164,.12)}.tool.convert .ti{background:rgba(41,82,204,.1)}
.tool:hover{box-shadow:var(--shadow)}
.tool b{display:block;margin-top:6px}
.tool span{font-size:13px;color:var(--muted)}

/* Prose pages */
.prose{max-width:760px;margin:0 auto;padding:10px 0 40px}
.prose h1{font-size:clamp(28px,5vw,38px);letter-spacing:-.5px;margin:22px 0 6px}
.prose h2{font-size:21px;margin:30px 0 6px}
.prose .updated{color:var(--muted);font-size:14px}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:56px;background:var(--card)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px;padding:32px 16px}
.foot-grid h4.mt{margin-top:18px}
.foot-grid h4{margin:0 0 10px;font-size:14px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
.foot-grid a{display:block;color:var(--text);text-decoration:none;font-size:14px;padding:3px 0}
.foot-grid a:hover{color:var(--brand)}
.foot-grid p{color:var(--muted);font-size:14px;margin:8px 0 0}
.copy{text-align:center;color:var(--muted);font-size:13px;padding:14px 16px;border-top:1px solid var(--line)}
@media (max-width:720px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid .about{grid-column:1/-1}}

/* ---------- Tool apps ---------- */
[hidden]{display:none!important}
input[type=color]{width:100%;height:42px;padding:3px;border-radius:10px;border:1px solid var(--line);background:var(--bg)}
input[type=file]{width:100%;font-size:14px;color:var(--muted)}
.inline{display:flex;gap:8px;align-items:center}
.inline input{min-width:0}
.inline select{width:auto}
.check{display:flex;align-items:center}
.check label{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--text);font-weight:500;margin:0;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--brand)}
.status{margin:14px 0 0;padding:12px 14px;border-radius:12px;background:var(--soft);color:var(--text);font-size:14px}
.status.ok{background:rgba(15,157,88,.12);color:var(--ok);font-weight:600}
.status.err{background:rgba(217,48,37,.1);color:var(--err);font-weight:600}
.mini{background:var(--soft);color:var(--brand);border:0;border-radius:8px;padding:6px 10px;font-size:14px;font-weight:700;cursor:pointer}
.mini:disabled{opacity:.35;cursor:not-allowed}
.row-btns{display:flex;gap:4px;flex-shrink:0}
.ficon{width:52px;height:52px;border-radius:8px;background:linear-gradient(135deg,#e5484d,#c2185b);color:#fff;font-size:11px;font-weight:800;display:grid;place-items:center;flex-shrink:0}
.pill{background:rgba(15,157,88,.12);color:var(--ok);font-weight:700;border-radius:999px;padding:1px 8px;font-size:12px}
.muted{color:var(--muted)}
.item.info{margin-top:16px}
.count{margin:12px 0 0}
/* organize */
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px;margin-top:16px}
.thumb{border:1px solid var(--line);border-radius:12px;padding:8px;background:var(--bg);cursor:grab;text-align:center}
.thumb.dragging{opacity:.4}
.thumb .tw{height:150px;display:grid;place-items:center;overflow:hidden}
.thumb img{max-width:100%;max-height:140px;box-shadow:0 1px 4px rgba(0,0,0,.2);background:#fff;transition:transform .2s}
.thumb .tl{font-size:12px;color:var(--muted);margin:6px 0}
.thumb .tb{display:flex;justify-content:center;gap:3px}
.thumb .mini{padding:4px 7px;font-size:13px}
/* crop pdf preview */
.crop-wrap{margin-top:16px;text-align:center}
.crop-wrap canvas{max-width:100%;border-radius:8px;box-shadow:0 1px 6px rgba(0,0,0,.2)}
/* crop image */
.crop-stage{position:relative;display:inline-block;max-width:100%;touch-action:none;user-select:none}
.crop-img{display:block;max-width:100%;max-height:70vh;border-radius:6px}
.crop-box{position:absolute;border:2px solid #fff;outline:1px solid var(--brand-2);box-shadow:0 0 0 9999px rgba(10,12,20,.55);cursor:move;touch-action:none}
.crop-box .h{position:absolute;width:18px;height:18px;background:#fff;border:2px solid var(--brand-2);border-radius:50%}
.crop-box .nw{left:-10px;top:-10px;cursor:nwse-resize}.crop-box .ne{right:-10px;top:-10px;cursor:nesw-resize}
.crop-box .sw{left:-10px;bottom:-10px;cursor:nesw-resize}.crop-box .se{right:-10px;bottom:-10px;cursor:nwse-resize}
/* sign */
.tabs{display:flex;gap:6px;margin-top:18px}
.tab{background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 16px;font-weight:700;cursor:pointer}
.tab.on{background:var(--soft);border-color:var(--brand);color:var(--brand)}
.tab-panel{margin-top:12px}
.pad{width:100%;height:auto;aspect-ratio:900/260;background:#fff;border:2px dashed var(--line);border-radius:12px;touch-action:none;cursor:crosshair;display:block}
.pad-clear{margin-top:8px}
.pager{display:flex;gap:12px;align-items:center;justify-content:center;margin:18px 0 10px;font-weight:600}
.stage{position:relative;max-width:720px;margin:0 auto;touch-action:none}
.page-cv{display:block;width:100%;height:auto;box-shadow:0 1px 8px rgba(0,0,0,.25)}
.sig-img{position:absolute;left:0;top:0;cursor:move;outline:2px dashed var(--brand-2);outline-offset:2px;touch-action:none;user-select:none;-webkit-user-drag:none}

.pnum{min-width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;font-size:13px;display:grid;place-items:center;flex-shrink:0}
section h2{scroll-margin-top:80px}

.lead-p{font-size:18px;color:var(--muted)}
.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:12px}
.about-grid .card{margin-top:0;padding:18px}
.about-grid .card p{color:var(--muted);font-size:15px;margin:8px 0}
.about-grid .card a{font-weight:700;text-decoration:none}
.contact-card{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.ticks{list-style:none;padding:0}
.ticks li{padding-left:30px;position:relative;margin:10px 0}
.ticks li:before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:rgba(15,138,95,.12);color:var(--ok);font-weight:800;font-size:13px;display:grid;place-items:center}