:root{--bg: #11201a;--panel: #18302618;--accent: #5aa06a;--accent2: #7cc78a;--ink: #e8f1ea;--muted: #9bb3a4;--wrong: #c8553d;--line: #2c4a3b}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1200px 600px at 50% -10%,#1c3a2c,var(--bg));color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}.wrap{max-width:880px;margin:0 auto;padding:18px 16px 40px}.top{text-align:center}h1{margin:6px 0 4px;font-size:clamp(26px,6vw,42px);letter-spacing:3px;color:var(--accent2);text-shadow:0 2px 0 #0c1a13}.tag{margin:0 auto 12px;color:var(--muted);max-width:620px;font-size:14px}.bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:space-between;margin-bottom:14px}.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.seg button{background:transparent;color:var(--muted);border:0;padding:8px 16px;cursor:pointer;font-weight:600}.seg button.on{background:var(--accent);color:#06140d}.stats{display:flex;gap:14px;color:var(--muted);font-variant-numeric:tabular-nums;font-size:14px}.stats span{white-space:nowrap}#scorereadout{color:var(--accent2);font-weight:700}.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:8px 14px;cursor:pointer;font-weight:600}.ghost:hover{border-color:var(--accent)}.play{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:stretch}@media(max-width:680px){.play{grid-template-columns:1fr}}.towerwrap{display:flex;flex-direction:column;justify-content:flex-end;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:10px;min-height:420px;position:relative}.goalline{border:2px dashed var(--accent2);color:var(--accent2);border-radius:8px;text-align:center;font-size:11px;letter-spacing:1px;padding:4px;margin-bottom:8px;font-weight:700}.tower{display:flex;flex-direction:column-reverse;gap:4px;flex:1;justify-content:flex-start}.ground{margin-top:8px;text-align:center;font-size:10px;letter-spacing:2px;color:var(--muted);border-top:3px solid var(--line);padding-top:6px}.block{border-radius:8px;padding:7px 8px;display:flex;align-items:baseline;gap:8px;border:1px solid;animation:drop .2s ease}.block .ab{font-weight:800;font-size:14px}.block .nm{font-size:12px;color:var(--ink);opacity:.85}.block.stable{background:#234a35;border-color:var(--accent)}.block.unstable{background:#3a241f;border-color:var(--wrong);transform:rotate(-1.5deg);opacity:.8}@keyframes drop{0%{transform:translateY(-12px);opacity:0}to{transform:translateY(0);opacity:1}}.side{display:flex;flex-direction:column;gap:12px}.quizcard,.placecard{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}.hidden{display:none!important}.qsubject{color:var(--muted);font-size:13px;margin-bottom:6px}.qsubject strong{color:var(--accent2)}.qprompt{font-size:18px;font-weight:700;margin-bottom:14px}.choices{display:grid;gap:8px}.choice{text-align:left;background:#12241b;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:11px 13px;cursor:pointer;font-size:14px;transition:border-color .1s}.choice:hover:not(:disabled){border-color:var(--accent)}.choice:disabled{cursor:default}.choice.right{background:#234a35;border-color:var(--accent2)}.choice.wrong{background:#3a241f;border-color:var(--wrong)}.pendblock{border-radius:10px;padding:14px;display:flex;align-items:baseline;gap:10px;border:2px solid;margin-bottom:10px;justify-content:center}.pendblock.stable{background:#234a35;border-color:var(--accent2)}.pendblock.unstable{background:#3a241f;border-color:var(--wrong)}.pendblock .ab{font-weight:800;font-size:20px}.pendblock .nm{font-size:15px}.placehint{font-size:14px;color:var(--ink);margin-bottom:14px;line-height:1.4}.placeactions{display:flex;gap:10px}#stackbtn{flex:1;background:var(--accent);color:#06140d;border:0;border-radius:10px;padding:11px;font-weight:800;cursor:pointer;font-size:15px}#stackbtn:hover{background:var(--accent2)}.msg{color:var(--muted);font-size:13px;min-height:18px;margin:0}.overlay{position:fixed;inset:0;background:#06100bc7;display:flex;align-items:center;justify-content:center;padding:20px;z-index:10}.overlay .card{background:#16291f;border:1px solid var(--accent);border-radius:16px;padding:26px;max-width:420px;text-align:center}.overlay h2{margin:0 0 10px;color:var(--accent2)}.overlay .ov-body{color:var(--ink);margin:0 0 18px;line-height:1.5}#againbtn,#stackbtn{font-family:inherit}#againbtn{background:var(--accent);color:#06140d;border:0;border-radius:10px;padding:11px 22px;font-weight:800;cursor:pointer;font-size:15px}#againbtn:hover{background:var(--accent2)}