:root{--paper:#f4f0e7;--sand:#e5ddcd;--sand2:#ece5d8;--ink:#23211d;--mut:#655f56;--laurel:#3d4a3a;--brass:#8a6f3d;--line:#d6cdb9;
  --f:'Manrope',system-ui,-apple-system,sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--sand);color:var(--ink);font-family:var(--f);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding:28px 24px 48px}
header{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
h1{margin:0;font-size:34px;line-height:1.1;font-weight:600;letter-spacing:-.02em}
.chip{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--laurel);margin-bottom:10px}
.chip::before{content:"";width:24px;height:1px;background:var(--brass)}
.lead{margin:0;font-size:17px;color:var(--mut);max-width:62ch}
.bar{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;margin-bottom:14px}
.grp{display:flex;gap:6px;flex-wrap:wrap}
.grp button,.flip{font:inherit;font-size:14px;font-weight:600;min-height:44px;padding:0 16px;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--mut);cursor:pointer;transition:background .15s,color .15s}
.grp button[aria-selected="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.grp button:hover,.flip:hover{background:var(--sand2)}
.flip{margin-left:auto;color:var(--ink)}
.stage{position:relative;width:100%;aspect-ratio:16/9;background:var(--paper);border:1px solid var(--line);overflow:hidden;touch-action:none}
.stage canvas{display:block;width:100%;height:100%;cursor:grab}
.stage canvas:active{cursor:grabbing}
.notes{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.notes li{padding:14px 20px;border-left:1px solid var(--line);font-size:14px;color:var(--mut)}
.notes li:first-child{padding-left:0;border-left:0}
.notes b{display:block;color:var(--ink);font-weight:600;margin-bottom:4px}
@media (max-width:760px){
  .wrap{padding:18px 16px 36px}
  h1{font-size:25px}
  .stage{aspect-ratio:1}
  .flip{margin-left:0;width:100%}
  .grp button{flex:1}
  .notes{grid-template-columns:1fr}
  .notes li{padding:12px 0;border-left:0;border-top:1px solid var(--line)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}