*{box-sizing:border-box}body{margin:0;background:#102a29;color:#eaf4d5;font-family:Segoe UI,Microsoft YaHei,sans-serif;padding: max(14px,env(safe-area-inset-top)) max(18px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left));min-height:100dvh}header{max-width:1250px;margin:0 auto 20px;display:flex;align-items:center;justify-content:space-between}small{letter-spacing:2px;font-size:11px;color:#abc5a6}h1{font-size:28px;margin:5px 0}h1 em{font-size:13px;font-style:normal;font-weight:400;color:#abc5a6;margin-left:12px}button{font:inherit;cursor:pointer;color:inherit;border:1px solid #587165;background:#25443c;border-radius:12px;min-height:44px;padding:10px 15px;touch-action:manipulation}button:hover{background:#365a48}button:focus-visible{outline:3px solid #e9c779}button:disabled{opacity:.4;cursor:default}main{max-width:1250px;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.field{min-width:0}.stats{display:flex;justify-content:space-between;margin-bottom:12px;color:#b8cdb5;font-size:14px}.stats b{color:#f7dea0;font-size:23px;margin-left:5px}.board{height:min(70vh,680px);min-height:270px;border:1px solid #537463;border-radius:24px;overflow:hidden;background:#1e4437;box-shadow:0 15px 50px #0003}canvas{width:100%;height:100%;display:block;touch-action:none}.caption{display:flex;justify-content:space-between;font-size:11px;color:#a7c1ac;margin-top:10px}aside{padding-top:12px}h2{font-size:23px;line-height:1.5;margin:10px 0}#tip{font-size:13px;line-height:1.6;color:#c2d2b9;min-height:42px}.shop{display:grid;gap:10px}.shop button{text-align:left;display:grid;grid-template-columns:40px 1fr;gap:3px}.shop i{grid-row:span 2;font-size:28px;font-style:normal;color:#e7ce80}.shop span{font-size:12px;color:#bdd1bb}.shop .selected{border-color:#f1cc76;background:#405a3b;box-shadow:inset 3px 0 #f1cc76}.manage{display:flex;gap:7px;margin:16px 0}.manage button{font-size:12px;flex:1;padding:8px}.actions{display:flex;gap:7px}.primary{background:#e7c57c;color:#233b30;border-color:#e7c57c;font-weight:700}.primary:hover{background:#f5d995}.actions .primary{flex:1}footer{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-top:20px}footer button{font-size:12px;border:0;background:none}dialog{border:1px solid #91aa78;border-radius:22px;background:#1f4034;color:#edf4dc;max-width:420px;width:calc(100% - 36px);padding:28px}dialog p{white-space:pre-line;line-height:1.9;font-size:14px}dialog::backdrop{background:#071a19b8}@media(max-width:700px) and (orientation:portrait){body{padding:12px}header{margin-bottom:12px}h1{font-size:24px}main{display:flex;flex-direction:column;gap:10px}.board{height:48dvh;min-height:300px}aside{padding:0}.intro{display:none}#tip{min-height:0;margin:5px 0 10px}.shop{grid-template-columns:repeat(3,1fr);gap:6px}.shop button{display:flex;flex-direction:column;align-items:center;padding:8px 3px}.shop i{font-size:22px}.shop strong{font-size:13px}.shop span{font-size:10px}.manage{margin:8px 0}footer{margin-top:5px}}@media(orientation:landscape) and (max-height:550px){body{padding:8px 14px}header{margin-bottom:5px}header small,h1 em,.intro,.caption{display:none}h1{font-size:20px}header button{min-height:32px;padding:4px 14px}main{grid-template-columns:minmax(0,1fr) 255px;gap:14px}.board{height:calc(100dvh - 105px);min-height:180px;border-radius:16px}.stats{margin-bottom:6px}.stats b{font-size:18px}aside{padding:0}#tip{margin:0 0 5px;font-size:11px;min-height:30px}.shop{gap:4px}.shop button{padding:5px 10px;min-height:40px}.shop i{font-size:22px}.shop span{font-size:10px}.shop strong{font-size:12px}.manage{margin:6px 0}.manage button{min-height:36px}.actions button{padding:7px;min-height:40px}footer{margin-top:2px}}

/* Content navigation only; retained approved visual language. */
.content-nav{display:flex;gap:5px}.content-nav button{font-size:12px;padding:6px 10px}.level-grid{display:grid;gap:7px;margin:12px 0;max-height:50dvh;overflow:auto}.level-grid button{text-align:left;font-size:12px}dialog{max-height:90dvh;overflow:auto}.content-extra{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}.content-extra button{font-size:12px}.rule-note{font-size:11px;line-height:1.5;color:#b8d0c5;margin:5px 0}.content-results{font-size:12px;line-height:1.7}