.rkb{
--bg:#eef1f0; --panel:#ffffff; --ink:#14201c; --muted:#5b6a64; --line:#d5ddd9;
--accent:#0a7a4f; --accent-ink:#ffffff; --stage:#dfe7e3; --pitch-line:rgba(10,122,79,.18);
--chip:#f3f6f5;
--display:"Saira Condensed","Arial Narrow",Arial,sans-serif;
--body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.45;padding:24px max(16px,env(safe-area-inset-right,0px)) 32px max(16px,env(safe-area-inset-left,0px))
}
.rkb *{box-sizing:border-box}
.rkb [hidden]{display:none!important}
.rkb .wrap{max-width:1280px;margin:0 auto}
.rkb .app{display:grid;grid-template-columns:minmax(0,1fr) 380px;height:720px;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.rkb .stage{position:relative;height:100%;background:var(--stage);overflow:hidden;display:flex;flex-direction:column}
.rkb .stage-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:20px 20px 0;position:relative;z-index:2}
.rkb .brand small{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600}
.rkb .brand .title{margin:0;font-family:var(--display);font-weight:800;font-size:clamp(28px,4vw,40px);line-height:1;letter-spacing:.01em;text-transform:uppercase}
.rkb .ref{font-family:var(--display);font-weight:600;font-size:13px;color:var(--muted);letter-spacing:.08em;text-align:right;font-variant-numeric:tabular-nums}
.rkb .pitch{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.rkb .view{position:relative;flex:1;min-height:0;touch-action:none;cursor:grab}
.rkb .view:active{cursor:grabbing}
.rkb .view canvas{display:block;width:100%!important;height:100%!important}
.rkb .stage-bar{position:relative;z-index:2;display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap;padding:0 16px 20px}
.rkb .hint{width:100%;text-align:center;font-size:12px;color:var(--muted)}
.rkb .btn{font:inherit;font-weight:600;font-size:14px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:8px 16px;cursor:pointer}
.rkb .btn[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.rkb .btn:focus-visible,.rkb .seg button:focus-visible,.rkb .chip:focus-visible,.rkb .kit:focus-visible,.rkb input:focus-visible,.rkb select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.rkb .panel{overflow-y:auto;background:var(--panel);border-left:1px solid var(--line);padding:24px 24px 40px;display:flex;flex-direction:column;gap:26px}
.rkb .group{display:flex;flex-direction:column;gap:10px;border:0;margin:0;padding:0;min-width:0}
.rkb .group > h2{font-family:var(--display);font-weight:800;font-size:15px;letter-spacing:.12em;text-transform:uppercase;margin:0;padding:0;color:var(--ink)}
.rkb .lbl{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.rkb .seg{display:flex;background:var(--chip);border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px}
.rkb .seg button{flex:1;font:inherit;font-size:14px;font-weight:600;border:0;background:transparent;color:var(--muted);padding:8px 6px;border-radius:7px;cursor:pointer}
.rkb .seg button[aria-pressed="true"]{background:var(--panel);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.15)}
.rkb .patterns{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.rkb input[type=range]{width:100%;accent-color:var(--accent)}
.rkb .chip{font:inherit;border:1px solid var(--line);background:var(--chip);color:var(--ink);border-radius:10px;padding:6px 4px 8px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:5px;font-size:12px;font-weight:500}
.rkb .chip canvas{width:100%;max-width:56px;aspect-ratio:1;border-radius:6px}
.rkb .chip[aria-pressed="true"]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset;color:var(--ink)}
.rkb .kits{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.rkb .kit{font:inherit;font-size:12px;font-weight:600;border:1px solid var(--line);background:var(--chip);color:var(--ink);border-radius:10px;padding:8px 4px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:6px}
.rkb .kit span.sw{display:flex;width:36px;height:18px;border-radius:4px;overflow:hidden;border:1px solid var(--line)}
.rkb .kit span.sw i{flex:1}
.rkb .colors{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.rkb .color{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:6px 10px;background:var(--chip)}
.rkb .color input{width:32px;height:32px;border:0;padding:0;background:none;cursor:pointer;flex:none}
.rkb .color label{font-size:13px;font-weight:600;cursor:pointer}
.rkb .color .hex{display:block;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;text-transform:uppercase}
.rkb .field{display:flex;flex-direction:column;gap:5px}
.rkb .row{display:grid;grid-template-columns:1fr 92px;gap:10px}
.rkb input[type=text],.rkb select{font:inherit;font-size:15px;border:1px solid var(--line);background:var(--chip);color:var(--ink);border-radius:10px;padding:10px 12px;width:100%;min-width:0;height:auto}
.rkb input[type=text]{text-transform:uppercase}
.rkb .note{font-size:12px;color:var(--muted);margin:0}
.rkb .upload{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.rkb .upload input[type=file]{font-size:13px;color:var(--muted);max-width:100%}
.rkb .summary{border-top:1px solid var(--line);padding-top:20px}
.rkb pre.spec{margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.6;background:var(--chip);border:1px solid var(--line);border-radius:10px;padding:12px;white-space:pre-wrap;word-break:break-word;color:var(--ink)}
.rkb .cta{width:100%;font:inherit;font-weight:700;font-size:15px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:12px;padding:13px 16px;cursor:pointer;letter-spacing:.02em}
.rkb .toast{font-size:13px;color:var(--accent);font-weight:600;min-height:18px;margin:0}
@media (max-width:860px){
.rkb .app{grid-template-columns:minmax(0,1fr);height:auto}
.rkb .stage{height:62vh;min-height:360px;max-height:560px}
.rkb .panel{overflow:visible;border-left:0;border-top:1px solid var(--line);padding:24px 16px 40px}
}