:root{--bg-top:#76d7ea;--bg-bottom:#cbf5b8;--wood-dark:#6d3d14;--wood-mid:#9c5a25;--wood-light:#f9d89c;--green-bright:#2ecc71;--green-dark:#1e8449;--gold:#f1c40f;--orange:#ff7f27;--red:#e74c3c;--card-bg:#fffdf7}*{box-sizing:border-box;margin:0;padding:0;user-select:none;-webkit-user-select:none}body{font-family:"Microsoft YaHei","PingFang SC","Rounded Mplus 1c",sans-serif;background:linear-gradient(180deg,#b71540 0%,#e55039 45%,#f6b93b 100%);min-height:100vh;display:flex;justify-content:center;align-items:center;color:#3a2312;overflow-x:hidden}#app-container{width:100%;max-width:1020px;min-height:100vh;display:flex;flex-direction:column;justify-content:space-between;padding:10px 14px;gap:8px}.top-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;background:rgba(255,252,240,0.94);border:3px solid #8b5a2b;border-radius:18px;padding:8px 14px;box-shadow:0 5px 0 rgba(109,61,20,0.25)}.brand-badge{display:flex;align-items:center;gap:8px}.badge-icon{font-size:30px;filter:drop-shadow(0 2px 2px rgba(0,0,0,0.2))}.brand-text h1{font-size:20px;font-weight:900;color:#5c310e;line-height:1.1}.sub-tag{font-size:11px;background:#e8f8f5;color:#117864;padding:2px 7px;border-radius:99px;font-weight:700;border:1px solid #a3e4d7}.stats-bar{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.stat-pill{display:flex;align-items:center;gap:4px;padding:4px 10px;border-radius:999px;font-weight:800;border:2px solid #8b5a2b;background:#fff6d6;box-shadow:inset 0 -2px 0 rgba(0,0,0,0.08);white-space:nowrap}.stat-icon{font-size:16px}.stat-label{font-size:12px;color:#78471c}.stat-value{font-size:16px;color:#d35400;min-width:18px;text-align:center}.top-actions{display:flex;flex-wrap:wrap;gap:6px}.top-btn{background:#ffeaa7;border:2px solid #8b5a2b;border-radius:12px;padding:5px 10px;font-size:12px;font-weight:800;color:#4d290c;cursor:pointer;box-shadow:0 3px 0 #8b5a2b;transition:transform 0.1s;white-space:nowrap}.top-btn:active{transform:translateY(2px);box-shadow:0 1px 0 #8b5a2b}.top-btn.active{background:#a8e6cf;border-color:#1e8449;color:#0e4b26;box-shadow:0 3px 0 #1e8449}.question-board{background:linear-gradient(180deg,#5c1916 0%,#380d0b 100%);border:5px solid #f1c40f;border-radius:22px;padding:10px 18px;color:#ffffff;box-shadow:0 6px 0 #2c0806,inset 0 2px 8px rgba(255,215,0,0.25);position:relative}.boss-banner{background:linear-gradient(90deg,#f39c12,#f1c40f,#f39c12);color:#5c2500;font-weight:900;text-align:center;padding:4px 12px;border-radius:12px;margin-bottom:6px;font-size:15px;animation:pulseGlow 1.1s infinite alternate}@keyframes pulseGlow{from{box-shadow:0 0 6px #f1c40f}to{box-shadow:0 0 16px #fff200}}.question-main{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.speak-btn,.hint-btn{background:#ffbe2e;border:3px solid #6e3b0c;border-radius:14px;padding:6px 12px;font-size:14px;font-weight:900;color:#4a2504;cursor:pointer;box-shadow:0 3px 0 #6e3b0c;white-space:nowrap}.hint-btn{background:#7ed6df;border-color:#136f78;color:#093b40;box-shadow:0 3px 0 #136f78}.speak-btn:active,.hint-btn:active{transform:translateY(2px)}.question-content{text-align:center;flex:1 1 180px;min-width:180px}.question-tag{font-size:13px;color:#b8e994;font-weight:700;margin-bottom:2px;white-space:nowrap}.question-Equation{font-size:34px;font-weight:900;letter-spacing:1px;color:#fff9d2;white-space:nowrap;text-shadow:0 3px 0 #0e260b,0 0 12px rgba(255,241,118,0.45)}.visual-helper{margin-top:8px;background:rgba(255,255,255,0.14);border:2px dashed rgba(255,255,255,0.45);border-radius:14px;padding:8px 12px;text-align:center}.visual-helper-content{font-size:16px;line-height:1.5;color:#fffde7;font-weight:700}.ten-frame-box{display:inline-flex;flex-wrap:wrap;gap:4px;background:rgba(0,0,0,0.28);border:2px solid #f6e58d;border-radius:10px;padding:5px 8px;margin:4px 6px;vertical-align:middle}.boss-progress-wrap{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:6px;font-size:12px;color:#d4efdf}.boss-dots{display:flex;gap:6px}.b-dot{width:14px;height:14px;border-radius:50%;background:rgba(255,255,255,0.25);border:2px solid #f9ca24;transition:all 0.25s}.b-dot.filled{background:#f9ca24;box-shadow:0 0 8px #f9ca24;transform:scale(1.15)}.stage-wrapper{position:relative;width:100%;background:#87ceeb;border:4px solid #784212;border-radius:24px;overflow:hidden;box-shadow:0 8px 0 rgba(92,49,14,0.35)}#game-canvas{display:block;width:100%;height:auto;cursor:pointer;touch-action:manipulation}.controls-overlay{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 16px;background:linear-gradient(180deg,#f9e79f 0%,#f5cba7 100%);border-top:3px solid #8b5a2b}.step-guide{font-size:16px;font-weight:800;color:#4a2306;flex:1}. step-guide strong{color:#c0392b}.chop-btn{background:linear-gradient(180deg,#ff5e57 0%,#ff3f34 100%);border:3px solid #781e19;border-radius:18px;padding:9px 24px;color:#fff;cursor:pointer;box-shadow:0 5px 0 #781e19,0 0 18px rgba(255,63,52,0.55);display:flex;flex-direction:column;align-items:center;transition:transform 0.08s,filter 0.15s;animation:chopBtnBounce 0.9s infinite alternate}@keyframes chopBtnBounce{from{box-shadow:0 5px 0 #781e19,0 0 10px rgba(255,63,52,0.4)}to{box-shadow:0 5px 0 #781e19,0 0 24px rgba(255,215,0,0.85)}}.chop-btn.disabled{background:#bdc3c7;border-color:#7f8c8d;box-shadow:0 4px 0 #7f8c8d;color:#555;cursor:not-allowed;animation:none}.chop-btn:not(.disabled):active{transform:translateY(3px);box-shadow:0 2px 0 #781e19}.chop-btn-main{font-size:20px;font-weight:900;text-shadow:0 2px 0 rgba(0,0,0,0.3)}.chop-btn-sub{font-size:11px;opacity:0.92}.bottom-dock{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.dock-btn{position:relative;display:flex;align-items:center;gap:10px;background:#fffdf7;border:3px solid #8b5a2b;border-radius:16px;padding:9px 12px;cursor:pointer;box-shadow:0 4px 0 #8b5a2b;text-align:left;transition:transform 0.1s,background 0.15s}.dock-btn:hover{background:#fff5cc}.dock-btn:active{transform:translateY(2px);box-shadow:0 2px 0 #8b5a2b}.dock-icon{font-size:28px}.dock-info{display:flex;flex-direction:column}.dock-info strong{font-size:15px;color:#4a2504}.dock-info small{font-size:12px;color:#7f5539}.red-dot{position:absolute;top:-8px;right:8px;background:#ff3838;color:#fff;font-size:11px;font-weight:900;padding:2px 8px;border-radius:99px;border:2px solid #fff;box-shadow:0 2px 4px rgba(0,0,0,0.25);animation:pulseGlow 0.8s infinite alternate}.modal-backdrop{position:fixed;inset:0;background:rgba(25,15,5,0.65);display:flex;justify-content:center;align-items:center;padding:16px;z-index:100}.hidden{display:none !important}.modal-card{width:100%;max-width:720px;max-height:86vh;overflow-y:auto;background:#fffdf5;border:4px solid #784212;border-radius:24px;padding:20px;box-shadow:0 10px 0 #4a2504}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.modal-header h2{font-size:22px;color:#5c310e}.close-btn{background:#ff6b6b;color:#fff;border:2px solid #8b1e1e;width:36px;height:36px;border-radius:50%;font-size:18px;font-weight:900;cursor:pointer}.modal-desc{font-size:14px;color:#6e4720;margin-bottom:14px}.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.shop-item{background:#fff8e7;border:3px solid #c89d66;border-radius:16px;padding:12px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}.shop-item.equipped{border-color:#27ae60;background:#eafaf1}.shop-item-icon{font-size:38px}.shop-item-title{font-size:16px;font-weight:900;color:#4a2504}.shop-item-perk{font-size:12px;color:#16a085;font-weight:700}.shop-action-btn{margin-top:4px;width:100%;padding:7px 10px;border-radius:12px;border:2px solid #5c310e;font-weight:900;font-size:14px;cursor:pointer;background:#f9ca24;color:#4a2504;box-shadow:0 3px 0 #5c310e}.shop-action-btn.equip{background:#2ecc71;border-color:#145a32;color:#fff;box-shadow:0 3px 0 #145a32}.shop-action-btn:disabled{background:#dcdde1;border-color:#7f8c8d;color:#666;box-shadow:none;cursor:not-allowed}.diff-list{display:flex;flex-direction:column;gap:10px}.diff-card{display:flex;align-items:center;justify-content:space-between;background:#fff8e7;border:3px solid #c89d66;border-radius:16px;padding:12px 16px;cursor:pointer}.diff-card.active{border-color:#27ae60;background:#eafaf1}.diff-card h3{font-size:17px;color:#4a2504}.diff-card p{font-size:13px;color:#78471c}.certificate-box{background:linear-gradient(135deg,#fff9e6 0%,#fff0b3 100%);border:6px double #d35400;border-radius:18px;padding:18px;text-align:center;margin-bottom:14px}.certificate-box h3{font-size:24px;color:#c0392b;margin-bottom:8px}.cert-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0}.cert-stat-card{background:rgba(255,255,255,0.8);border-radius:12px;padding:10px;border:2px solid #f39c12}.cert-stat-card strong{display:block;font-size:22px;color:#d35400}@media (max-width:600px){.question-content{order:-1;flex:1 1 100%}.question-main{justify-content:center}.question-Equation{font-size:28px}.bottom-dock{grid-template-columns:repeat(2,1fr)}.controls-overlay{flex-direction:column;text-align:center}.chop-btn{width:100%}}