:root{--bg:#f6f8fb;--card:#fff;--text:#1a1f2b;--muted:#5b6475;--line:#e3e7ee;--brand:#32BCAD;--brand-dark:#1f9a8c;--ok:#1b8f4e;--err:#c62828;--radius:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--brand)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:#eef1f6;padding:1px 5px;border-radius:5px}
.site-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px;padding:12px 16px;max-width:1080px;margin:0 auto}
.brand{font-weight:700;text-decoration:none;color:var(--text);font-size:18px}
.logo{color:var(--brand);margin-right:4px}
.site-header nav{display:flex;gap:16px;min-width:0;max-width:100%;overflow-x:auto;white-space:nowrap;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.site-header nav::-webkit-scrollbar{display:none}
.site-header nav a{display:inline-block;padding:8px 0;text-decoration:none;color:var(--muted);font-size:15px;line-height:24px}
.site-header nav a:hover{color:var(--brand)}
main{max-width:1080px;margin:0 auto;padding:0 16px 48px}
.hero{text-align:center;padding:24px 0 20px}
h1{font-size:clamp(28px,5vw,42px);margin:0 0 10px;line-height:1.15}
.lead{max-width:720px;margin:0 auto;color:var(--muted);font-size:17px}
.tool{display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
@media(min-width:900px){.tool{grid-template-columns:1.1fr .9fr;align-items:start}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.field{margin-bottom:16px}
.row{display:grid;grid-template-columns:1fr;gap:0 14px}
@media(min-width:560px){.row{grid-template-columns:1fr 1fr}}
label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.req,.opt{font-weight:400;color:var(--muted);font-size:12px;margin-left:6px}
input{width:100%;font:inherit;padding:10px 12px;min-height:46px;line-height:1.4;border:1px solid #cdd4df;border-radius:10px;background:#fff;color:var(--text)}
input:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.hint{display:block;color:var(--muted);font-size:13px;margin-top:5px}
.btn{font:inherit;font-weight:600;padding:11px 16px;border-radius:10px;border:1px solid #cdd4df;background:#fff;color:var(--text);cursor:pointer}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn.primary{width:100%;background:var(--brand);border-color:var(--brand);color:#fff;font-size:17px;padding:13px}
.btn.primary:hover{background:var(--brand-dark)}
.privacy-note{text-align:center;color:var(--muted);font-size:13px;margin:12px 0 0}
.error{color:var(--err);background:#fdecec;border:1px solid #f5c2c2;border-radius:10px;padding:10px 12px;font-size:14px}
.result{text-align:center}
.qr-card{display:inline-block;background:#fff;padding:18px 22px 14px;border:2px dashed var(--line);border-radius:12px;max-width:100%}
.qr-title{font-weight:700;font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
#qr-canvas{width:280px;max-width:100%;height:auto;image-rendering:pixelated;display:block;margin:0 auto}
.qr-payee{font-weight:700;font-size:20px;margin-top:10px}
.qr-vpa{font-family:ui-monospace,Menlo,Consolas,monospace;color:var(--muted);font-size:14px;word-break:break-all}
.qr-amount{font-weight:700;font-size:22px;color:var(--ok);margin-top:4px}
.qr-amount:empty{display:none}
.qr-apps{font-size:12px;color:var(--muted);margin-top:10px}
.actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}
.link-details{margin-top:16px;text-align:left}
.link-details summary{cursor:pointer;color:var(--muted);font-size:14px}
.upi-link{display:block;margin-top:8px;padding:10px;word-break:break-all;background:#eef1f6;border-radius:8px;font-size:13px}
.content{max-width:760px;margin:44px auto 0}
.content h2{font-size:24px;margin:36px 0 12px}
.content h2:first-child{margin-top:0}
.content p,.content li{color:#2b3340}
.steps li{margin-bottom:10px}
.content details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px}
.content summary{font-weight:600;cursor:pointer}
.content details p{margin:10px 0 0}
.site-footer{text-align:center;color:var(--muted);font-size:14px;padding:24px 16px 40px;border-top:1px solid var(--line)}
.site-footer a{color:var(--muted)}
.disclaimer{font-size:12px;max-width:640px;margin:8px auto 0}
.page{max-width:760px;margin:0 auto;padding:16px 16px 40px}
.page h1{font-size:32px}
@media print{body{background:#fff}.site-header,.hero,.form,.actions,.link-details,.content,.site-footer{display:none!important}main{padding:0}.tool{display:block}.result{border:0;box-shadow:none}.qr-card{border:0}#qr-canvas{width:70mm}}
.related-list{list-style:none;padding:0;display:grid;gap:10px}
.related-list li{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px}
.related-list a{font-weight:600;text-decoration:none}
.related-list small{display:block;color:var(--muted)}
select{width:100%;font:inherit;padding:10px 12px;height:46px;line-height:1.4;border:1px solid #cdd4df;border-radius:10px;background:#fff;color:var(--text)}
select:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
textarea{width:100%;font:inherit;padding:11px 12px;border:1px solid #cdd4df;border-radius:10px;background:#fff;color:var(--text);min-height:92px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}

/* layout fixes: header, controls, wrapping, mobile */
[hidden]{display:none!important}
.brand{white-space:nowrap;flex:0 0 auto;padding:6px 0}
.lang-menu{position:relative;font-size:14px;flex:0 0 auto;margin-left:auto}
.lang-menu summary{list-style:none;cursor:pointer;padding:7px 10px;border:1px solid var(--line);border-radius:8px;color:var(--muted);white-space:nowrap;line-height:24px;background:#fff}
.lang-menu summary::-webkit-details-marker{display:none}
.lang-menu summary:hover{color:var(--brand);border-color:var(--brand)}
.lang-menu ul{position:absolute;right:0;top:calc(100% + 6px);z-index:30;margin:0;padding:6px;list-style:none;min-width:160px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(16,24,40,.12)}
.lang-menu li a{display:block;padding:9px 10px;border-radius:6px;text-decoration:none;color:var(--text);white-space:nowrap}
.lang-menu li a:hover{background:#f3f4f6;color:var(--brand)}
.lang-menu li a[aria-current]{font-weight:600;color:var(--brand)}
@media(max-width:1023px){.site-header nav{order:3;flex:0 0 calc(100% + 32px);margin:-2px -16px 0;padding:0 16px;max-width:none}.brand{flex:1 1 auto}}
textarea{line-height:1.5;resize:vertical;max-width:100%}
input,select,textarea{max-width:100%;min-width:0}
.field,.row>*{min-width:0}
.btn{min-height:44px;line-height:1.2;display:inline-flex;align-items:center;justify-content:center;gap:6px;text-align:center}
.btn.primary{min-height:52px}
.actions .btn{min-height:46px}
.btn:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,a:focus-visible,details:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
textarea:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
code,.upi-link,.hint,.error,.content p,.content li,.content td,.content th,.content dd,.content dt,.qr-vpa,.privacy-note,.disclaimer{overflow-wrap:anywhere}
.card,.content,.hero,.site-footer{min-width:0;max-width:100%}
.content details summary{padding:7px 0}
.link-details summary{padding:9px 0}
.site-footer p{margin:0 0 8px}
@media(max-width:600px){
  .card{padding:16px}
  .btn{min-height:40px}
  .actions .btn{flex:1 1 auto}
  .actions{gap:8px}
  .content h2{font-size:22px;margin-top:30px}
  .lead{font-size:16px}
  .qr-card{padding:14px 12px 12px}
  .site-footer{padding:20px 16px 32px}
}

/* pixqr: key hints, counters, validator/decoder results, TLV tree */
.hint.ok{color:var(--ok)}
.hint.bad{color:var(--err)}
.hint.warn{color:#9a6700}
.counter{float:right;margin-left:0;font-variant-numeric:tabular-nums}
.field.check{margin-top:4px}
.check-label{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;cursor:pointer}
.check-label input{width:18px;height:18px;min-height:0;margin:0;padding:0}
.tool-form{display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
.vres{text-align:left;background:var(--card);border:1px solid var(--line);border-left:5px solid var(--ok);border-radius:10px;padding:14px 16px;margin-bottom:12px}
.vres.bad{border-left-color:var(--err)}
.vhead{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:6px}
.vaddr{word-break:break-all}
.badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:3px 8px;border-radius:999px;background:#e3f6f3;color:#13685f}
.vres.bad .badge{background:#fdecec;color:var(--err)}
.vsum{margin:4px 0 8px;color:#2b3340}
.vdet{display:grid;grid-template-columns:max-content 1fr;gap:4px 14px;margin:8px 0 0;font-size:14px;text-align:left}
.vdet dt{color:var(--muted);font-weight:600}
.vdet dd{margin:0;overflow-wrap:anywhere}
.vres h3{font-size:15px;margin:16px 0 6px}
.tlv,.tlv ul{list-style:none;padding-left:0;margin:0;font-size:13px;font-family:ui-monospace,Menlo,Consolas,monospace}
.tlv ul{padding-left:18px;border-left:2px solid var(--line);margin-top:4px}
.tlv li{padding:3px 0;overflow-wrap:anywhere}
.tlv-id{background:#e3f6f3;color:#13685f;font-weight:700}
.tlv-len{color:var(--muted)}
.content table{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0 20px;background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.content th,.content td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.content th{background:#eef7f6;font-weight:600}
.content tr:last-child td{border-bottom:0}
.table-wrap{overflow-x:auto;max-width:100%}
.tool-form .result{text-align:left}
.tool-form textarea{min-height:120px}
.btn.mini{padding:6px 10px;min-height:0;font-size:13px}
.ex-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px}
@media(max-width:600px){.vdet{grid-template-columns:1fr;gap:2px 0}.vdet dt{margin-top:6px}}
@media print{#qr-card .qr-vpa{font-size:12px}}