:root{
  --bg:#0c0c0d;
  --bg-2:#141416;
  --bg-3:#1a1a1d;
  --line:#26262b;
  --line-2:#34343b;
  --fg:#f4f1e8;
  --fg-mute:#9d9b91;
  --fg-dim:#6c6a62;
  --red:#d11232;
  --red-d:#a40e26;
  --green:#46c47e;
  --warn:#f0a830;
  --cream:#f6f3ec;
  --max:1240px;
  --rad:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:'Unbounded',system-ui,-apple-system,Segoe UI,sans-serif;font-size:15px;line-height:1.55;font-weight:400;-webkit-font-smoothing:antialiased}
a{color:var(--fg);text-decoration:none}
a:hover{color:var(--red)}
b,strong{font-weight:700;color:var(--fg)}
em{font-style:italic;font-family:'Cormorant Garamond',serif;font-weight:500;color:var(--red)}
img,svg{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

.masthead{position:sticky;top:0;z-index:60;background:rgba(12,12,13,.93);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.mh-in{display:flex;align-items:center;gap:18px;padding:14px 24px}
.logo{font-weight:800;letter-spacing:.5px;font-size:18px;display:inline-flex;align-items:baseline;gap:2px}
.logo .d{color:var(--red)}
.logo .sub{color:var(--fg-mute);font-weight:500;font-size:13px;margin-left:1px}
.logo .brand-red{color:var(--red);margin-left:6px;font-weight:700}
.mh-meta{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--fg-dim);text-transform:uppercase;letter-spacing:1px}
.mh-nav{display:flex;gap:18px;flex-wrap:wrap}
.mh-nav a{font-size:13px;text-transform:lowercase;color:var(--fg-mute);transition:.15s}
.mh-nav a:hover{color:var(--fg)}
.hamb{display:none;background:none;border:1px solid var(--line);width:38px;height:34px;cursor:pointer;border-radius:8px;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.hamb span{display:block;width:18px;height:2px;background:var(--fg)}
.drawer{position:fixed;inset:0 0 0 auto;width:320px;max-width:88vw;background:var(--bg-2);border-left:1px solid var(--line);transform:translateX(105%);transition:transform .25s ease;z-index:80;padding:24px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer nav{display:flex;flex-direction:column;gap:2px}
.drawer a{padding:11px 14px;border-radius:10px;display:flex;flex-direction:column;gap:2px;transition:.15s;border:1px solid transparent}
.drawer a:hover{background:var(--bg-3);border-color:var(--line)}
.drawer a span{font-size:14px;font-weight:600}
.drawer a small{font-size:11px;color:var(--fg-dim);font-family:'JetBrains Mono',monospace}

@media (max-width:900px){
  .mh-nav{display:none}
  .mh-meta{display:none}
  .hamb{display:flex}
}

.kicker{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:2.2px;text-transform:uppercase;color:var(--fg-dim);margin:0 0 14px}
.kicker b{color:var(--red);font-weight:700;margin-right:8px}
.display{font-size:clamp(40px, 6vw, 80px);font-weight:800;line-height:.96;margin:0 0 18px;letter-spacing:-.02em}
.compact-title{font-weight:900}
.lede{font-size:17px;color:var(--fg-mute);max-width:560px;margin:0 0 22px}
h1,h2,h3{letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,44px);font-weight:800;margin:0 0 12px}
h3{font-size:18px;font-weight:700;margin:0 0 10px}
.sec-sub{color:var(--fg-mute);max-width:620px;margin:0}
.mode-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.mode-row a{padding:8px 14px;border:1px solid var(--line-2);border-radius:99px;font-size:13px;color:var(--fg-mute)}
.mode-row a:hover{border-color:var(--red);color:var(--fg)}

.hero{padding:42px 0 28px}
.studio-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:36px;align-items:start}
@media (max-width:1000px){.studio-grid{grid-template-columns:1fr}}

.panel{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden}
.panel-in{padding:24px}
.qr-workbench{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(280px,.95fr);gap:24px}
@media (max-width:780px){.qr-workbench{grid-template-columns:1fr}}

.controls{display:flex;flex-direction:column;gap:14px;min-width:0}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label{font-size:12px;color:var(--fg-mute);text-transform:lowercase;letter-spacing:.4px}
.field input[type=text],.field input[type=number],.field input[type=email],.field input[type=url],.field input[type=tel],.field input[type=password],.field input[type=search],.field select,.field textarea,.field input[type=file]{
  width:100%;background:var(--bg-3);color:var(--fg);border:1px solid var(--line);border-radius:9px;padding:10px 12px;font:inherit;font-size:14px;outline:none;transition:.15s;min-width:0
}
.field textarea{min-height:80px;resize:vertical;line-height:1.4;font-family:'JetBrains Mono',monospace;font-size:13px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--red)}
.field.swatch{flex-direction:row;align-items:center;gap:10px}
.field.swatch label{order:2;flex:1;min-width:0}
.field.swatch input[type=color]{width:42px;height:36px;padding:0;border-radius:7px;cursor:pointer;background:var(--bg-3);border:1px solid var(--line)}
.field input[type=range]{width:100%;accent-color:var(--red)}
.field input[type=file]{padding:8px 10px;font-size:12px;cursor:pointer}

.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.row4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:600px){.row2,.row3,.row4{grid-template-columns:1fr 1fr}}

.checkline{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--fg-mute);cursor:pointer;user-select:none;padding:4px 0}
.checkline input{accent-color:var(--red);width:16px;height:16px;cursor:pointer}

.actions{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px}
.btn{padding:10px 16px;border:1px solid var(--line-2);background:var(--bg-3);color:var(--fg);font:inherit;font-size:13px;font-weight:500;border-radius:9px;cursor:pointer;transition:.15s;letter-spacing:.2px}
.btn:hover{border-color:var(--red);color:var(--fg)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff;font-weight:600}
.btn.primary:hover{background:var(--red-d);border-color:var(--red-d)}
.btn.ghost{background:transparent;color:var(--fg-mute)}
.btn.ghost:hover{color:var(--fg);border-color:var(--line-2)}
.btn.download{background:var(--bg-3)}

.tiles-area{display:flex;flex-direction:column;gap:14px}
.shape-group{display:flex;flex-direction:column;gap:6px}
.shape-group h4{margin:0;font-size:11px;font-weight:600;color:var(--fg-dim);text-transform:uppercase;letter-spacing:1.2px}
.shape-strip{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:8px}
.shape-tile{display:flex;flex-direction:column;align-items:center;gap:4px;padding:9px 6px;background:var(--bg-3);border:1px solid var(--line);border-radius:10px;cursor:pointer;color:var(--fg);font:inherit;font-size:11px;transition:.15s}
.shape-tile svg{width:38px;height:38px;color:var(--fg)}
.shape-tile span{font-size:10px;color:var(--fg-mute);text-align:center;line-height:1.15;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.shape-tile:hover{border-color:var(--fg-mute)}
.shape-tile.on{border-color:var(--red);background:rgba(209,18,50,.12)}
.shape-tile.on span{color:var(--fg)}

.preset-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:8px}
.preset-tile{position:relative;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-end;padding:0;background:var(--bg-3);border:1px solid var(--line);border-radius:10px;cursor:pointer;overflow:hidden;color:var(--fg);font:inherit;font-size:11px;transition:.15s;height:64px}
.preset-tile i{flex:1;display:block;background:
  linear-gradient(135deg, var(--c1) 0% 35%, var(--c2) 35% 65%, var(--c4) 65% 100%);
  background-color:var(--c3)}
.preset-tile span{padding:5px 4px;text-align:center;background:var(--bg-3);font-size:10px;color:var(--fg-mute);text-transform:uppercase;letter-spacing:.6px}
.preset-tile:hover{border-color:var(--fg-mute)}
.preset-tile.on{border-color:var(--red)}

.preview{display:flex;flex-direction:column;gap:12px;min-width:0}
.qr-card{background:var(--cream);border-radius:var(--rad);padding:20px;display:flex;align-items:center;justify-content:center;min-height:280px;position:relative;overflow:hidden;aspect-ratio:1;max-width:420px;width:100%;margin:0 auto;border:1px solid var(--line)}
.qr-card svg{width:100%;height:100%;display:block}
.qr-card.shape-circle{border-radius:50%}
.qr-card.shape-heart{border-radius:18% 18% 50% 50%}

.meter{height:6px;background:var(--bg-3);border-radius:4px;overflow:hidden}
.meter i{display:block;height:100%;background:var(--green);transition:.25s;width:0%}
.meter.warn i{background:var(--warn)}
.status{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;font-family:'JetBrains Mono',monospace;font-size:11px}
.status > div{background:var(--bg-3);padding:8px 10px;border-radius:8px;display:flex;flex-direction:column;gap:2px}
.status span{color:var(--fg-dim);text-transform:uppercase;letter-spacing:.6px;font-size:9px}
.status b{color:var(--fg);font-size:13px;font-weight:600}
.hint{font-size:12px;color:var(--fg-mute);padding:10px 12px;background:var(--bg-3);border-radius:9px;margin:0;line-height:1.55}
.hint b{color:var(--fg)}

.sec{padding:60px 0;border-top:1px solid var(--line)}
.sec-hd{display:grid;grid-template-columns:60px 1fr;gap:18px;margin-bottom:34px;align-items:start}
.sec-num{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--red);letter-spacing:1px;padding-top:8px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.tool-card{display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--rad);transition:.15s;color:var(--fg)}
.tool-card:hover{border-color:var(--red);transform:translateY(-2px);color:var(--fg)}
.tool-card span{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--red);letter-spacing:1.5px;text-transform:uppercase}
.tool-card h3{margin:0;font-size:20px}
.tool-card p{margin:0;color:var(--fg-mute);font-size:13px;line-height:1.55;flex:1}
.tool-card b{color:var(--red);font-size:12px;text-transform:uppercase;letter-spacing:1px;margin-top:8px}

.mini-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px;margin-top:18px}
.mini-qr{background:var(--cream);color:#0a0a0a;padding:12px;border-radius:10px;display:flex;flex-direction:column;gap:6px;align-items:center;border:1px solid var(--line)}
.mini-qr-svg{width:100%;aspect-ratio:1}
.mini-qr-svg svg{width:100%;height:100%}
.mini-qr b{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;color:#0a0a0a;text-align:center;word-break:break-all}

.camera-stage{position:relative;aspect-ratio:4/3;background:#000;border-radius:var(--rad);overflow:hidden;border:1px solid var(--line)}
.camera-stage video{width:100%;height:100%;object-fit:cover}
.scan-frame{position:absolute;inset:14% 14%;border:2px dashed rgba(255,255,255,.42);border-radius:14px;pointer-events:none}

.transfer-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:880px){.transfer-grid{grid-template-columns:1fr}}
.transfer-pane h2{font-size:22px;margin-bottom:14px}
.transfer-qr{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start;margin-top:12px}
@media (max-width:520px){.transfer-qr{grid-template-columns:1fr}}
.transfer-chunks{display:grid;grid-template-columns:repeat(auto-fill,minmax(22px,1fr));gap:3px;margin-top:14px;background:var(--bg-3);padding:8px;border-radius:8px;max-height:160px;overflow-y:auto}
.transfer-chunks .cell{height:22px;border-radius:4px;background:var(--line);cursor:pointer;border:none;transition:.1s}
.transfer-chunks .cell.received{background:var(--green)}
.transfer-chunks .cell.active{outline:2px solid var(--red)}
.transfer-status{padding:10px 12px;border-radius:8px;font-size:13px;margin-top:10px;background:var(--bg-3);color:var(--fg-mute)}
.transfer-status.ok{background:rgba(70,196,126,.15);color:var(--green)}
.transfer-status.err{background:rgba(209,18,50,.18);color:#ffb1b8}
.transfer-status.info{background:var(--bg-3);color:var(--fg-mute)}

.frame-info{display:flex;justify-content:space-between;align-items:center;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--fg-mute);margin-top:8px}
.frame-info b{color:var(--fg);font-size:14px}

footer{margin-top:60px;padding:30px 0;border-top:1px solid var(--line);background:var(--bg-2)}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:12px;color:var(--fg-mute);font-family:'JetBrains Mono',monospace}
.foot a{color:var(--fg-mute);margin:0 4px}
.foot a:hover{color:var(--red)}

.reveal{opacity:0;transform:translateY(8px);transition:.5s}
.reveal.in{opacity:1;transform:none}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(10px);background:var(--red);color:#fff;padding:10px 16px;border-radius:99px;font-size:13px;opacity:0;transition:.2s;z-index:120;pointer-events:none;font-weight:500}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.cat-group{margin-bottom:42px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.cat-tile{display:flex;flex-direction:column;align-items:center;gap:6px;padding:18px 10px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;color:var(--fg);transition:.15s}
.cat-tile svg{width:74px;height:74px;color:var(--fg)}
.cat-tile:hover{border-color:var(--red);transform:translateY(-2px);color:var(--fg)}
.cat-tile b{font-size:14px;font-weight:600}
.cat-tile span{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--fg-dim)}

.article{max-width:780px;margin:40px auto;padding:0 24px;line-height:1.7}
.article h1{margin-bottom:18px;font-size:38px}
.article h2{font-size:26px;margin-top:42px;margin-bottom:14px}
.article h3{font-size:18px;margin-top:30px;margin-bottom:10px}
.article p{color:var(--fg-mute);margin:0 0 16px}
.article p b,.article p strong{color:var(--fg)}
.article ul,.article ol{color:var(--fg-mute);padding-left:24px}
.article li{margin:0 0 6px}
.article code{background:var(--bg-3);padding:2px 7px;border-radius:5px;font-size:13px;color:var(--red)}
.article blockquote{border-left:3px solid var(--red);padding:8px 18px;background:var(--bg-2);color:var(--fg-mute);font-style:italic;margin:18px 0;border-radius:0 8px 8px 0}

@media print{
  body{background:#fff;color:#000}
  .masthead,.drawer,footer,.toast,.actions,.controls,.preview,.transfer-status,.hint,.lede,.kicker,.mode-row,.meter,.status,header,nav{display:none!important}
  .panel,.panel-in{padding:0;border:0;background:#fff}
  .mini-grid{grid-template-columns:repeat(4,1fr);gap:6px}
  .mini-qr{padding:6px;break-inside:avoid;border:1px solid #ddd}
  .mini-qr b{color:#000;font-size:9px}
  .printing .wrap{max-width:100%;padding:0}
}

::selection{background:var(--red);color:#fff}
.brand-red{color:var(--red)}

.tool-hero{padding:42px 0 24px}
.tool-hero h1{margin-bottom:18px}
.tool-layout{padding-bottom:28px}

details.accord{background:var(--bg-3);border:1px solid var(--line);border-radius:10px;padding:0;overflow:hidden}
details.accord > summary{padding:12px 14px;font-size:13px;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;color:var(--fg)}
details.accord > summary::-webkit-details-marker{display:none}
details.accord > summary::after{content:'+';color:var(--fg-mute);font-size:18px;font-weight:300;transition:.15s}
details.accord[open] > summary::after{content:'−'}
details.accord > div{padding:14px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:14px}

.crumbs{font-size:12px;color:var(--fg-dim);font-family:'JetBrains Mono',monospace;margin-bottom:18px;padding-top:12px}
.crumbs a{color:var(--fg-mute)}
.crumbs a:hover{color:var(--red)}
.crumbs span{margin:0 6px;color:var(--line-2)}

.link-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.link-row a{padding:7px 12px;background:var(--bg-3);border:1px solid var(--line);border-radius:8px;font-size:12px;color:var(--fg-mute);transition:.15s}
.link-row a:hover{border-color:var(--red);color:var(--fg)}

.type-pills{display:flex;flex-wrap:wrap;gap:6px}
.type-pills button{
  padding:7px 12px;background:var(--bg-3);border:1px solid var(--line);border-radius:99px;
  font:inherit;font-size:12px;color:var(--fg-mute);cursor:pointer;transition:.15s;letter-spacing:.2px
}
.type-pills button:hover{border-color:var(--fg-mute);color:var(--fg)}
.type-pills button.on{background:var(--red);border-color:var(--red);color:#fff;font-weight:600}