:root{
  --bg:#f4f5f7; --surface:#fff; --border:#e2e5ea; --border-strong:#cbd0d8;
  --text:#0f172a; --muted:#64748b; --muted2:#94a3b8;
  --accent:#1e3a5f; --accent-dark:#15293f;
  --ok:#0a7d3e; --ok-bg:#e6f4ec; --err:#a8201a; --err-bg:#fce8e6;
  --warn-bg:#fff6e0; --warn:#7a4a04;
  --r:8px; --r-lg:12px;
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.06);
  --pad:16px;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}

/* Landing page fills the viewport — no scroll on desktop or mobile */
body.landing-page{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;overflow:hidden}
body.landing-page main.landing{flex:1;display:flex;flex-direction:column;min-height:0;padding-top:14px;padding-bottom:14px}
body.landing-page .tiles{flex:1;align-content:start;min-height:0;overflow:auto}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit;font-size:15px;color:var(--text)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em;background:#f1f3f6;padding:1px 5px;border-radius:4px;word-break:break-all}

/* Top bar */
.topbar{background:var(--accent);color:#fff;padding:14px var(--pad);position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px}

/* Landing-page branded header — header uses a radial gradient that mirrors
   the GIF's bright centre, and the GIF itself is masked to fade its edges
   into the surrounding gradient. Result: no visible rectangle. */
.topbar.brand{
  background:radial-gradient(ellipse 65% 110% at 50% 30%, #144aa8 0%, #0c3a8a 45%, #08296a 100%);
  flex-direction:column;align-items:center;text-align:center;gap:6px;padding:22px 16px 24px;
}
.topbar.brand .brand-img{
  display:block;height:120px;max-width:360px;width:auto;object-fit:contain;
  -webkit-mask-image:radial-gradient(ellipse 55% 45% at 50% 50%, #000 0%, rgba(0,0,0,.92) 35%, rgba(0,0,0,.45) 60%, transparent 78%);
          mask-image:radial-gradient(ellipse 55% 45% at 50% 50%, #000 0%, rgba(0,0,0,.92) 35%, rgba(0,0,0,.45) 60%, transparent 78%);
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
  -webkit-mask-size:100% 100%;mask-size:100% 100%;
}
.topbar.brand .ttl{text-align:center}
.topbar.brand h1{font-size:18px;font-weight:600;letter-spacing:.15px}
.topbar.brand .sub{font-size:13px;opacity:.85;margin-top:2px}
@media (max-width:520px){
  .topbar.brand{padding:10px 12px 12px;gap:2px}
  .topbar.brand .brand-img{height:64px;max-width:200px}
  .topbar.brand h1{font-size:15px}
  .topbar.brand .sub{font-size:11px;opacity:.8}

  /* Compact tiles on mobile — buttons, not cards */
  body.landing-page main.landing{padding:10px 12px 12px}
  body.landing-page .tiles{gap:8px;margin-top:4px}
  body.landing-page .tile{padding:11px 14px;border-radius:8px}
  body.landing-page .tile-row{gap:10px;align-items:center}
  body.landing-page .tile-num{width:28px;height:28px;font-size:12px;border-radius:6px}
  body.landing-page .tile-title{font-size:13.5px;gap:6px}
  body.landing-page .tile-pill{font-size:9px;padding:1px 5px}
  body.landing-page .tile-desc{display:none}
}
.topbar .back{color:rgba(255,255,255,.85);font-size:13px;display:inline-flex;align-items:center;gap:5px;padding:5px 8px;border-radius:6px;margin-left:-8px}
.topbar .back:hover{background:rgba(255,255,255,.08);text-decoration:none}
.topbar .ttl{flex:1;min-width:0}
.topbar h1{font-size:16px;font-weight:600;letter-spacing:.1px}
.topbar .sub{font-size:12px;opacity:.7;margin-top:2px;font-weight:400}

main{max-width:680px;margin:0 auto;padding:var(--pad) var(--pad) 80px}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;margin-bottom:14px;box-shadow:var(--shadow)}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.step{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:12px;font-weight:600;flex-shrink:0}
.card-head h2{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.1px}
.card-sub{font-size:12px;color:var(--muted);margin:-8px 0 12px;line-height:1.5}

/* Form */
label{display:block;font-size:13px;color:var(--muted);font-weight:500;margin-bottom:6px}
textarea,input[type=text]{width:100%;border:1px solid var(--border);border-radius:var(--r);padding:11px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;background:#fafbfc;resize:vertical;color:var(--text);transition:border-color .15s,background .15s}
textarea:focus,input[type=text]:focus{outline:none;border-color:var(--accent);background:#fff}
textarea{min-height:70px}

/* Tabs */
.tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:14px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.tab{padding:9px 13px;background:none;border:none;color:var(--muted);font-size:13px;font-weight:500;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tab.active{color:var(--text);border-bottom-color:var(--accent);font-weight:600}
.panel{display:none}.panel.active{display:block}

/* Scanner */
.scanner{position:relative;background:#0a0f17;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;width:100%}
.scanner video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.scanner-mask{position:absolute;inset:0;pointer-events:none}
.scanner-frame{position:absolute;inset:10% 6%;border:1.5px solid rgba(255,255,255,.45);border-radius:6px}
.scanner-frame > span{position:absolute;width:22px;height:22px;border:2.5px solid transparent}
.scanner-frame > span:nth-child(1){top:-2px;left:-2px;border-top-color:#fff;border-left-color:#fff;border-top-left-radius:6px}
.scanner-frame > span:nth-child(2){top:-2px;right:-2px;border-top-color:#fff;border-right-color:#fff;border-top-right-radius:6px}
.scanner-frame > span:nth-child(3){bottom:-2px;left:-2px;border-bottom-color:#fff;border-left-color:#fff;border-bottom-left-radius:6px}
.scanner-frame > span:nth-child(4){bottom:-2px;right:-2px;border-bottom-color:#fff;border-right-color:#fff;border-bottom-right-radius:6px}
.scanner-beam{position:absolute;left:5%;right:5%;height:2px;background:rgba(255,255,255,.7);box-shadow:0 0 8px rgba(255,255,255,.6);animation:beam 2.2s ease-in-out infinite}
@keyframes beam{0%{top:15%}50%{top:85%}100%{top:15%}}
.scanner-idle{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0a0f17;color:#cbd5e1;font-size:13px;text-align:center;padding:24px}
.scanner-idle .ico{width:38px;height:38px;border:1.5px solid #475569;border-radius:6px;margin-bottom:10px;display:flex;align-items:center;justify-content:center}
.scanner-idle .ico svg{width:22px;height:22px;color:#94a3b8}
.scan-status{font-size:13px;color:var(--muted);text-align:center;min-height:18px;margin-top:10px;font-weight:500;word-break:break-all}
.scan-status.ok{color:var(--ok)}.scan-status.err{color:var(--err)}.scan-status.scanning{color:var(--accent)}
.scan-actions{display:flex;gap:8px;margin-top:10px}
.scan-actions button{flex:1;padding:11px;border-radius:var(--r);border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:500;font-size:14px;transition:background .15s}
.scan-actions button:hover{background:#f8f9fb}
.scan-actions button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.scan-actions button.primary:hover{background:var(--accent-dark)}
.scan-actions button.danger{background:#fff;color:var(--err);border-color:#e8c5c3}

/* Upload */
.dropzone{border:1.5px dashed var(--border-strong);border-radius:var(--r);padding:22px 16px;text-align:center;cursor:pointer;background:#fafbfc;transition:border-color .15s,background .15s}
.dropzone:hover,.dropzone.drag-over{border-color:var(--accent);background:#f4f6f9}
.dropzone-title{font-size:13px;font-weight:500;color:var(--text);margin-bottom:3px}
.dropzone-hint{font-size:12px;color:var(--muted)}
input[type=file]{display:none}
.upload-result{display:none;margin-top:8px;background:#f1f3f6;border-radius:5px;padding:7px 10px;font-size:11px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upload-result.show{display:block}

/* File chooser */
.filerow{display:flex;align-items:center;gap:10px;margin-top:6px;flex-wrap:wrap}
.filebtn{padding:9px 14px;border-radius:var(--r);border:1px solid var(--border);background:var(--surface);font-size:13px;font-weight:500;color:var(--text)}
.filebtn:hover{background:#f8f9fb}
.filename{font-size:12px;color:var(--muted)}

/* Card data */
.data{display:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.data.show{display:block}
.data-row{display:grid;grid-template-columns:auto 1fr;gap:4px 16px;font-size:13px;padding:6px 0;border-bottom:1px solid #f1f3f6}
.data-row:last-child{border-bottom:none}
.data-row dt{color:var(--muted);font-weight:500;white-space:nowrap;padding-top:1px}
.data-row dd{color:var(--text);font-weight:500;word-break:break-word}
.badge-tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;letter-spacing:.3px;text-transform:uppercase}
.tag-ok{background:var(--ok-bg);color:var(--ok)}
.tag-err{background:var(--err-bg);color:var(--err)}
.tag-warn{background:var(--warn-bg);color:var(--warn)}

/* Messages */
.msg{border-radius:var(--r);padding:10px 12px;font-size:13px;margin-top:10px;display:none;line-height:1.5}
.msg.err{background:var(--err-bg);color:var(--err);display:block;border:1px solid #f3c8c5}
.msg.info{background:#e8f1fa;color:#13497a;display:block;border:1px solid #c5dcef}
.msg.warn{background:var(--warn-bg);color:var(--warn);border:1px solid #f0d68a;display:none}
.msg.warn.show{display:block}

/* Layout helper */
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* Action button */
.action{display:block;width:100%;padding:14px;border-radius:var(--r);border:none;background:var(--accent);color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;letter-spacing:.2px;transition:background .15s}
.action:hover:not(:disabled){background:var(--accent-dark)}
.action:disabled{opacity:.45;cursor:not-allowed}
.action.ghost{background:#fff;color:var(--accent);border:1px solid var(--border)}
.action.ghost:hover:not(:disabled){background:#f6f8fb}

/* Result */
.result{display:none;border-radius:var(--r-lg);padding:18px;margin-bottom:14px;border:1px solid}
.result.match{background:var(--ok-bg);border-color:#b7dec5;color:var(--ok)}
.result.nomatch{background:var(--err-bg);border-color:#f3c8c5;color:var(--err)}
.result.error{background:var(--warn-bg);border-color:#f0d68a;color:var(--warn)}
.result.loading{background:#e8f1fa;border-color:#c5dcef;color:#13497a}
.result.info{background:#f1f3f6;border-color:var(--border);color:var(--text)}
.result h3{font-size:16px;font-weight:600;margin-bottom:6px;letter-spacing:.1px}
.result p{font-size:13px;white-space:pre-line;line-height:1.65;opacity:.9}
.score-bar-wrap{margin-top:12px}
.score-bar-label{font-size:12px;margin-bottom:4px;font-weight:500}
.score-bar{height:6px;background:rgba(255,255,255,.45);border-radius:3px;overflow:hidden}
.score-bar-fill{height:100%;background:currentColor;border-radius:3px;transition:width .5s ease}

/* Spinner */
.spinner{display:inline-block;width:13px;height:13px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:6px}
@keyframes spin{to{transform:rotate(360deg)}}

/* Landing-page tiles — single column on mobile, 2 columns on desktop */
.tiles{display:grid;gap:14px;margin-top:8px;grid-template-columns:1fr}
@media (min-width:720px){
  main.landing{max-width:1240px;padding-left:32px;padding-right:32px}
  .tiles{grid-template-columns:1fr 1fr;gap:20px}
  main.landing .tile{padding:22px 24px}
  main.landing .tile-title{font-size:16px}
  main.landing .tile-desc{font-size:13.5px}
  main.landing .tile-num{width:42px;height:42px;font-size:16px}
}
@media (min-width:1280px){
  main.landing{max-width:1340px}
}
.tile{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;text-decoration:none;color:var(--text);transition:transform .12s,box-shadow .12s,border-color .15s}
.tile:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:var(--border-strong);text-decoration:none}
.tile-row{display:flex;align-items:center;gap:14px}
.tile-num{flex-shrink:0;width:38px;height:38px;border-radius:var(--r);background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;font-variant-numeric:tabular-nums}
.tile-title{font-size:15px;font-weight:600;color:var(--text);letter-spacing:.1px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tile-desc{font-size:13px;color:var(--muted);margin-top:3px;line-height:1.5}
.tile-pill{display:inline-block;background:#eef1f5;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;padding:2px 7px;border-radius:10px}
.tile.soon{cursor:not-allowed;opacity:.7}
.tile.soon:hover{transform:none;box-shadow:var(--shadow);border-color:var(--border)}
.tile.soon .tile-num{background:var(--muted2)}

/* Mobile */
@media (max-width:520px){
  main{padding:12px 12px 80px}
  .card,.tile{padding:14px;border-radius:var(--r)}
  .scanner{aspect-ratio:3/4}
  .row2{grid-template-columns:1fr}
  .topbar h1{font-size:15px}
  .tile-num{width:34px;height:34px;font-size:14px}
}
@media (min-width:640px){.scanner{aspect-ratio:16/10}}