.play-hero{padding:56px 0 30px;background:linear-gradient(180deg,#e3f4ff,#fffcf5)}
.play-hero h1{font-size:clamp(2.4rem,5vw,4rem);margin:0 0 12px}
.play-hero p{max-width:640px;font-size:1.1rem}
.play-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 9px 24px #24527410;margin-bottom:28px}
.play-card h2{font-size:clamp(1.7rem,3vw,2.4rem);margin:0 0 6px}
.play-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:22px;align-items:start}
html{scroll-padding-top:90px}#scene{scroll-margin-top:90px;width:100%;height:auto;aspect-ratio:16/10;border-radius:18px;border:1px solid var(--line);touch-action:none;display:block;background:#d9f1ff;cursor:grab}
#scene:focus-visible{outline:4px solid #FFD13D;outline-offset:3px}
.tool-label{font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--sea);margin:14px 0 8px}
.btnrow{display:flex;flex-wrap:wrap;gap:8px}
.chipbtn,.placebtn,.donebtn,.iconbtn,.propbtn,.stickerbtn,.toolbtn{border:2px solid var(--line);background:#fff;border-radius:16px;font-weight:700;min-height:48px;padding:8px 14px;color:var(--ink)}
.chipbtn[aria-pressed=true],.placebtn[aria-pressed=true]{background:#167ECA;border-color:#167ECA;color:#fff}
.stickerbtn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px;width:86px}
.stickerbtn img{width:60px;height:60px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:0 0 0 2px var(--line)}
.propbtn{font-size:30px;width:58px;height:58px;padding:0;line-height:1}
.stickerbtn:hover,.propbtn:hover,.chipbtn:hover,.placebtn:hover{border-color:#167ECA}
.toolbtn.primary{background:#167ECA;border-color:#167ECA;color:#fff}
#scene-tools{margin-top:10px}
.placebtn{font-size:1.05rem;display:flex;align-items:center;gap:8px;padding:12px 18px}
.placebtn span{font-size:1.6rem}
.walk-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
.codecard{border:3px solid var(--line);border-radius:20px;padding:16px;background:#fffdf8;display:flex;flex-direction:column}
.codecard.done{border-color:#45CEC9;background:#effcfa}
.codestep{font-weight:800;color:var(--sea);margin:0 0 6px;font-size:14px;letter-spacing:.06em;text-transform:uppercase}
.codestep span{font-size:1.4rem}
.codetext{font-size:1.15rem;line-height:1.4;font-weight:600;flex:1;margin:0 0 12px}
.coderow{display:flex;gap:6px;flex-wrap:wrap}
.donebtn[aria-pressed=true]{background:#45CEC9;border-color:#45CEC9;color:#123}
.iconbtn{width:48px;padding:0;font-size:1.2rem}
.walk-finish{margin-top:20px;border-radius:20px;background:#FFF3DE;padding:20px;border:2px dashed #FFD13D}
.walk-finish h3{margin:0 0 6px;font-size:1.6rem}
.walk-finish label{display:block;font-weight:700;margin:10px 0}
.walk-finish input{display:block;margin-top:6px;padding:12px;border-radius:12px;border:2px solid var(--line);width:min(320px,100%)}
.fine{font-size:13px;color:var(--muted)}
.cert{display:none}
@media (max-width:900px){.play-grid{grid-template-columns:1fr}.walk-cards{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.walk-cards{grid-template-columns:1fr}.stickerbtn{width:74px}}
@media print{
  body.printing-cert>*:not(main),body.printing-cert main>*:not(#code){display:none!important}
  body.printing-cert #code>*:not(.cert){display:none!important}
  body.printing-cert .cert{display:block;text-align:center;border:6px solid #FFD13D;border-radius:28px;padding:40px;margin:20px}
  .cert h2{font-size:42px;margin:10px 0}.cert .big{font-size:64px}.cert ul{text-align:left;max-width:520px;margin:20px auto;font-size:18px}
}