/* =====================================================================
   Browser-Local Converter — shared stylesheet for the whole tool cluster.
   Every page in the cluster links this one file, so a visitor who moves
   from one converter to the next reuses it straight from cache.
   ===================================================================== */

:root{
  --bg:#ffffff;
  --bg-soft:#f7f9fc;
  --bg-sink:#eef2f7;
  --panel:#ffffff;
  --line:#e3e8ef;
  --line-strong:#cbd5e1;
  --ink:#0f172a;
  --ink-2:#475569;
  --ink-3:#7c8798;
  --brand:#2563eb;
  --brand-dark:#1d4ed8;
  --brand-soft:#eff4ff;
  --ok:#059669;
  --ok-soft:#ecfdf5;
  --warn:#b45309;
  --warn-soft:#fffbeb;
  --err:#dc2626;
  --err-soft:#fef2f2;
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 4px 16px -4px rgba(15,23,42,.10),0 2px 6px -2px rgba(15,23,42,.05);
  --shadow-lg:0 24px 60px -20px rgba(15,23,42,.28);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:940px;margin:0 auto;padding:0 20px}

/* ---------- cluster nav (shared across every page) ---------- */
.sitenav{
  border-bottom:1px solid var(--line);
  background:#fff;
  font-size:13.5px;
}
.sitenav .wrap{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
.sitenav .brand{
  display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--ink);
  letter-spacing:-.01em;margin-right:8px;
}
.sitenav .brand:hover{text-decoration:none}
.sitenav .mark{
  width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,#2563eb,#0891b2);
  display:grid;place-items:center;color:#fff;font-size:12px;font-weight:800;font-family:var(--mono);
}
.sitenav ul{display:flex;gap:2px;list-style:none;margin:0;padding:0;flex-wrap:wrap;margin-left:auto}
.sitenav ul a{
  display:block;padding:5px 11px;border-radius:8px;color:var(--ink-2);font-weight:600;white-space:nowrap;
}
.sitenav ul a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
.sitenav ul a[aria-current="page"]{background:var(--brand-soft);color:var(--brand)}
@media(max-width:640px){
  .sitenav ul{margin-left:0;width:100%}
  .sitenav ul a{padding:5px 9px;font-size:13px}
}

/* ---------- language switcher (right edge of the nav) ---------- */
.langsw{
  display:flex;gap:2px;flex-wrap:wrap;
  margin-left:10px;padding-left:10px;border-left:1px solid var(--line);
}
.langsw a{
  display:block;padding:5px 8px;border-radius:8px;color:var(--ink-2);
  font-weight:600;font-size:12.5px;white-space:nowrap;
}
.langsw a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
.langsw a[aria-current="page"]{background:var(--brand-soft);color:var(--brand)}
@media(max-width:640px){
  .langsw{margin-left:0;padding-left:0;border-left:0;width:100%}
}

/* ---------- trust bar ---------- */
.trustbar{
  border-bottom:1px solid var(--line);
  background:var(--bg-soft);
  font-size:13px;
  color:var(--ink-2);
}
.trustbar .wrap{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-top:9px;padding-bottom:9px}
.trustbar b{color:var(--ink);font-weight:600}
.dot-sep{color:var(--line-strong)}
.netpill{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:12px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:3px 11px;color:var(--ink-2);white-space:nowrap;
}
.netpill .led{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}
.netpill.alert{color:var(--err);border-color:#fecaca;background:var(--err-soft)}
.netpill.alert .led{background:var(--err);box-shadow:0 0 0 3px #fee2e2}

/* ---------- header ---------- */
header{padding:44px 0 8px;text-align:center}
h1{font-size:clamp(30px,5vw,44px);line-height:1.1;margin:0 0 14px;letter-spacing:-.028em;font-weight:800}
h1 .accent{background:linear-gradient(100deg,#2563eb,#0891b2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lede{font-size:17px;color:var(--ink-2);max-width:640px;margin:0 auto 18px}
.badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:6px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  border:1px solid var(--line);background:var(--bg-soft);color:var(--ink-2);
  padding:5px 11px;border-radius:999px;
}
.badge.g{background:var(--ok-soft);border-color:#a7f3d0;color:#047857}

/* ---------- dropzone ---------- */
main{padding-bottom:60px}
.drop{
  margin-top:26px;
  border:2px dashed var(--line-strong);
  border-radius:20px;
  background:var(--bg-soft);
  padding:44px 24px;
  text-align:center;
  cursor:pointer;
  transition:border-color .16s,background .16s,transform .16s;
  position:relative;
}
.drop:hover{border-color:#93b4fb;background:var(--brand-soft)}
.drop.dragging{border-color:var(--brand);background:var(--brand-soft);transform:scale(1.006)}
.drop .icon{
  width:56px;height:56px;margin:0 auto 14px;border-radius:16px;
  display:grid;place-items:center;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.drop h2{margin:0 0 6px;font-size:19px;font-weight:700}
.drop p{margin:0;color:var(--ink-3);font-size:14px}
.drop .cta{
  display:inline-block;margin-top:18px;background:var(--brand);color:#fff;
  font-weight:650;font-size:14.5px;padding:11px 26px;border-radius:10px;
  box-shadow:0 6px 18px -6px rgba(37,99,235,.6);
}
.drop:hover .cta{background:var(--brand-dark)}

/* ---------- workspace ---------- */
.workspace{display:none;margin-top:26px}
.workspace.on{display:block}

.toolbar{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  box-shadow:var(--shadow-sm);padding:16px 18px;margin-bottom:16px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:18px;align-items:start;
}
@media(max-width:720px){.toolbar{grid-template-columns:1fr}}
.field label{display:block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);margin-bottom:7px}
.qrow{display:flex;align-items:center;gap:12px}
input[type=range]{
  -webkit-appearance:none;appearance:none;flex:1;height:5px;border-radius:999px;
  background:linear-gradient(90deg,var(--brand) var(--pct,60%),var(--bg-sink) var(--pct,60%));
  outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:19px;height:19px;border-radius:50%;background:#fff;
  border:2px solid var(--brand);box-shadow:var(--shadow-sm);cursor:pointer;
}
input[type=range]::-moz-range-thumb{
  width:17px;height:17px;border-radius:50%;background:#fff;border:2px solid var(--brand);cursor:pointer;
}
.qval{font-family:var(--mono);font-size:14px;font-weight:600;min-width:44px;text-align:right}
select{
  width:100%;padding:9px 11px;border:1px solid var(--line-strong);border-radius:9px;
  background:#fff;font:inherit;font-size:14px;color:var(--ink);cursor:pointer;
}
.seg{display:flex;gap:4px;background:var(--bg-sink);padding:3px;border-radius:10px}
.seg button{
  flex:1;border:0;background:transparent;font:inherit;font-size:13px;font-weight:650;
  color:var(--ink-2);padding:7px 4px;border-radius:7px;cursor:pointer;
}
.seg button.on{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}
.hint{font-size:12px;color:var(--ink-3);margin-top:6px}

.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.btn{
  border:1px solid var(--line-strong);background:#fff;color:var(--ink);
  font:inherit;font-size:14px;font-weight:600;padding:9px 16px;border-radius:10px;
  cursor:pointer;display:inline-flex;align-items:center;gap:7px;
  transition:background .14s,border-color .14s;
}
.btn:hover:not(:disabled){background:var(--bg-soft);border-color:#94a3b8}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover:not(:disabled){background:var(--brand-dark);border-color:var(--brand-dark)}
.btn.link{border:0;background:none;color:var(--ink-3);padding:9px 8px;text-decoration:underline;font-weight:500}
.spacer{flex:1}

/* ---------- file list ---------- */
.list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel);box-shadow:var(--shadow-sm)}
.item{display:grid;grid-template-columns:56px 1fr auto;gap:14px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
.item:last-child{border-bottom:0}
.item.err{background:var(--err-soft)}
.thumb{
  width:56px;height:56px;border-radius:10px;overflow:hidden;background:var(--bg-sink);
  border:1px solid var(--line);display:grid;place-items:center;flex:none;
}
.thumb canvas{width:100%;height:100%;object-fit:cover;display:block}
.thumb .spin{width:20px;height:20px;border:2px solid var(--line-strong);border-top-color:var(--brand);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.meta{min-width:0}
.name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sub{font-size:12.5px;color:var(--ink-3);font-family:var(--mono);display:flex;gap:8px;flex-wrap:wrap;margin-top:3px}
.sub .ok{color:var(--ok);font-weight:600}
.sub .warn{color:var(--warn);font-weight:600}
.sub .bad{color:var(--err)}

/* ---------- presets ---------- */
.presets{display:flex;gap:6px;margin-top:9px;flex-wrap:wrap}
.presets button{
  font:inherit;font-size:12px;font-weight:650;padding:4px 10px;border-radius:7px;
  border:1px solid var(--line-strong);background:#fff;color:var(--ink-2);cursor:pointer;
}
.presets button:hover:not(:disabled){border-color:#94a3b8;background:var(--bg-soft)}
.presets button.on{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.presets button:disabled{opacity:.45;cursor:not-allowed}
.presets button.star{border-color:#fcd34d;color:var(--warn)}
.presets button.star.on{background:var(--warn-soft);border-color:#f59e0b;color:var(--warn)}

/* ---------- result banner ---------- */
.banner{
  display:none;align-items:flex-start;gap:12px;margin-bottom:14px;
  border:1px solid var(--line);border-radius:12px;padding:13px 16px;font-size:13.5px;
}
.banner.show{display:flex}
.banner.warn{background:var(--warn-soft);border-color:#fde68a;color:#78350f}
.banner.good{background:var(--ok-soft);border-color:#a7f3d0;color:#065f46}
.banner.info{background:var(--brand-soft);border-color:#bfdbfe;color:#1e3a8a}
.banner b{font-weight:700}
.banner .btxt{flex:1}
.banner .bact{display:flex;gap:8px;flex-shrink:0;flex-wrap:wrap}
.banner button{
  font:inherit;font-size:12.5px;font-weight:650;padding:6px 12px;border-radius:8px;cursor:pointer;
  border:1px solid currentColor;background:rgba(255,255,255,.72);color:inherit;
}
.banner button:hover{background:#fff}

.acts{display:flex;gap:6px;align-items:center}
.mini{
  border:1px solid var(--line-strong);background:#fff;font:inherit;font-size:12.5px;font-weight:600;
  color:var(--ink-2);padding:6px 11px;border-radius:8px;cursor:pointer;white-space:nowrap;
}
.mini:hover{background:var(--bg-soft);border-color:#94a3b8}
.mini.dl{border-color:var(--brand);color:var(--brand)}
.mini.dl:hover{background:var(--brand-soft)}
.mini.x{border:0;padding:6px 8px;color:var(--ink-3);font-size:16px;line-height:1}
.progress{height:3px;background:var(--bg-sink);border-radius:999px;overflow:hidden;margin-top:8px}
.progress i{display:block;height:100%;background:var(--brand);width:0;transition:width .2s}

/* ---------- self-verify ---------- */
.verify{
  margin-top:26px;border:1px solid #bfdbfe;background:linear-gradient(180deg,#f8fbff,#eff4ff);
  border-radius:var(--radius);padding:18px 20px;
}
.verify h3{margin:0 0 8px;font-size:15px;display:flex;align-items:center;gap:8px}
.verify p{margin:0 0 10px;font-size:13.5px;color:var(--ink-2)}
.verify ol{margin:0;padding-left:20px;font-size:13.5px;color:var(--ink-2)}
.verify li{margin-bottom:4px}
.verify code{font-family:var(--mono);font-size:12.5px;background:#fff;border:1px solid var(--line);border-radius:5px;padding:1px 6px}
.counter{
  display:inline-flex;align-items:baseline;gap:6px;font-family:var(--mono);font-weight:700;
  background:#fff;border:1px solid #a7f3d0;color:#047857;border-radius:8px;padding:4px 10px;
}
.netlist{margin:10px 0 0;padding-left:18px;font-size:12.5px;color:var(--ink-2)}
.netlist li{margin-bottom:4px;word-break:break-all}
.netlist code{font-family:var(--mono);font-size:11.5px;background:#fff;border:1px solid var(--line);border-radius:5px;padding:1px 5px}
.netlist em{color:var(--ok);font-style:normal}

/* ---------- content sections ---------- */
section.content{margin-top:52px}
section.content h2{font-size:24px;letter-spacing:-.02em;margin:0 0 14px}
section.content h3{font-size:17px;margin:26px 0 8px}
section.content p,section.content li{color:var(--ink-2)}
section.content ul{padding-left:22px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
@media(max-width:720px){.grid3{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:var(--panel);box-shadow:var(--shadow-sm)}
.card .ci{width:34px;height:34px;border-radius:9px;background:var(--brand-soft);display:grid;place-items:center;margin-bottom:10px}
.card h4{margin:0 0 6px;font-size:15px}
.card p{margin:0;font-size:13.5px;color:var(--ink-2)}
details{border-bottom:1px solid var(--line);padding:14px 0}
details summary{cursor:pointer;font-weight:650;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:12px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--ink-3);font-weight:400;font-size:18px;line-height:1}
details[open] summary::after{content:"–"}
details p{margin:10px 0 0;font-size:14px}
footer{border-top:1px solid var(--line);margin-top:56px;padding:24px 0 40px;text-align:center;font-size:13px;color:var(--ink-3)}
footer .fl{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:10px}

/* ---------- data table (used inside content sections) ---------- */
.tablewrap{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:var(--radius)}
table.data{border-collapse:collapse;width:100%;font-size:13.5px;background:#fff}
table.data th,table.data td{padding:9px 13px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
table.data th{background:var(--bg-soft);font-size:11.5px;text-transform:uppercase;letter-spacing:.045em;color:var(--ink-3);font-weight:700}
table.data td{font-family:var(--mono);color:var(--ink-2)}
table.data td.h{font-family:inherit;color:var(--ink);font-weight:600}
table.data tr:last-child td{border-bottom:0}
.up{color:#dc2626;font-weight:700}
.down{color:#059669;font-weight:700}

/* ---------- cluster: related tools + hub grid ---------- */
.related{margin-top:52px}
.related h2{font-size:20px;margin:0 0 6px}
.related .rsub{color:var(--ink-2);font-size:14px;margin:0 0 16px}
.cluster{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
a.tool{
  display:block;border:1px solid var(--line);border-radius:var(--radius);padding:16px;
  background:var(--panel);box-shadow:var(--shadow-sm);color:var(--ink);transition:border-color .14s,transform .14s;
}
a.tool:hover{border-color:#93b4fb;text-decoration:none;transform:translateY(-1px)}
a.tool .tt{font-weight:700;font-size:15px;margin-bottom:4px;display:flex;align-items:center;gap:6px}
a.tool .td{font-size:13px;color:var(--ink-2)}
a.tool .tm{font-size:11.5px;font-family:var(--mono);color:var(--ink-3);margin-top:9px}
a.tool.here{border-color:var(--brand);background:var(--brand-soft);cursor:default}
a.tool.here:hover{transform:none}

/* ---------- hub page ---------- */
.hubgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:22px}
.hubcard{
  display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;background:var(--panel);box-shadow:var(--shadow-sm);transition:border-color .14s,transform .14s;
  color:var(--ink);
}
.hubcard:hover{border-color:#93b4fb;text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}
.hubcard .hicon{
  width:40px;height:40px;border-radius:11px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-family:var(--mono);font-weight:800;font-size:12px;margin-bottom:12px;
}
.hubcard h3{margin:0 0 6px;font-size:16.5px}
.hubcard p{margin:0 0 12px;font-size:13.5px;color:var(--ink-2);flex:1}
.hubcard .go{font-size:13px;font-weight:700;color:var(--brand)}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.62);display:none;place-items:center;z-index:60;padding:20px;backdrop-filter:blur(3px)}
.modal.on{display:grid}
.sheet{background:#fff;border-radius:16px;max-width:900px;width:100%;max-height:90vh;overflow:auto;box-shadow:var(--shadow-lg)}
.sheet header{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;text-align:left}
.sheet header h3{margin:0;font-size:16px;flex:1}
.sheet .body{padding:20px}
.cmp{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:
  repeating-conic-gradient(#eef2f7 0% 25%,#fff 0% 50%) 50%/18px 18px;user-select:none}
.cmp canvas{display:block;width:100%;height:auto}
.cmp .top{position:absolute;inset:0;width:100%;height:100%;clip-path:inset(0 0 0 50%)}
.cmp .top canvas{width:100%;height:100%;object-fit:contain}
.cmp .handle{position:absolute;top:0;bottom:0;width:2px;background:#fff;box-shadow:0 0 0 1px rgba(15,23,42,.25);left:50%;cursor:ew-resize}
.cmp .handle::after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:34px;height:34px;border-radius:50%;background:#fff;box-shadow:var(--shadow)}
.cmp .tag{position:absolute;bottom:10px;font-size:11.5px;font-weight:700;background:rgba(15,23,42,.72);color:#fff;padding:3px 9px;border-radius:6px;letter-spacing:.03em}
.cmp .tag.l{left:10px}.cmp .tag.r{right:10px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:16px}
.stat{border:1px solid var(--line);border-radius:10px;padding:11px 13px;background:var(--bg-soft)}
.stat .k{font-size:11.5px;text-transform:uppercase;letter-spacing:.045em;color:var(--ink-3);font-weight:700}
.stat .v{font-family:var(--mono);font-size:16px;font-weight:650;margin-top:3px}
.stat .v.good{color:var(--ok)}