:root{--bg-primary:#06060a;--bg-card:#0e0e14;--bg-elevated:#14141c;--text-primary:#f0f0f5;--text-secondary:#8888a0;--text-muted:#5a5a6e;--accent:#6366f1;--accent-light:#818cf8;--accent-glow:rgba(99,102,241,.3);--border:rgba(255,255,255,.06);--border-light:rgba(255,255,255,.1);--radius:16px;--radius-sm:10px;--shadow:0 8px 32px rgba(0,0,0,.4);--sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;font:16px/1.5 var(--sans);color:var(--text-primary);background:var(--bg-primary);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);min-height:100svh;overflow-x:hidden}#app{flex-direction:column;max-width:480px;min-height:100svh;margin:0 auto;display:flex;position:relative}.platform-desktop #app{max-width:720px;padding:40px 0 60px}.platform-desktop .product-intro-desc{max-width:420px}.platform-desktop .stat-value{font-size:20px}.platform-desktop .bg-glow{width:500px;height:500px;top:-160px}.loading-container{flex-direction:column;justify-content:center;align-items:center;min-height:100svh;display:flex}.loading-container>*+*{margin-top:20px}.loading-spinner{border:3px solid var(--border-light);border-top-color:var(--accent);border-radius:50%;width:40px;height:40px;-webkit-animation:.8s linear infinite spin;animation:.8s linear infinite spin}@-webkit-keyframes spin{to{transform:rotate(360deg)}}@keyframes 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var(--accent-light));color:#fff;border-radius:7px;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:flex}.header-title{color:var(--text-primary);font-size:15px;font-weight:600}.header-action{background:var(--bg-elevated);border:1px solid var(--border-light);color:var(--text-secondary);cursor:pointer;border-radius:20px;align-items:center;padding:6px 14px;font-size:12px;transition:all .2s;display:flex}.header-action:active{background:var(--border)}.header-action svg{width:14px;height:14px;margin-right:6px}.product-intro{text-align:center;padding:6px 20px 2px}.product-intro-title{color:var(--text-secondary);letter-spacing:.5px;margin-bottom:6px;font-size:13px;font-weight:600}.product-intro-desc{color:var(--text-muted);max-width:320px;margin:0 auto 10px;font-size:13px;line-height:1.6}.product-stats{justify-content:center;padding:4px 0;display:flex}.stat-item{text-align:center;flex:1}.stat-value{color:var(--text-secondary);font-size:13px;font-weight:600;line-height:1.2}.stat-unit{color:var(--text-muted);margin-left:1px;font-size:10px;font-weight:400}.stat-label{color:var(--text-muted);margin-top:2px;font-size:10px}.action-bar{padding:10px 20px;padding-bottom:max(10px, env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--bg-primary);margin-top:auto}.action-btn-primary{background:linear-gradient(135deg, var(--accent), var(--accent-light));color:#fff;cursor:pointer;width:100%;box-shadow:0 4px 20px var(--accent-glow);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;border:none;border-radius:12px;justify-content:center;align-items:center;padding:12px;font-size:15px;font-weight:600;transition:opacity .2s,transform .1s;display:flex}.action-btn-primary>*+*{margin-left:8px}.action-btn-primary:active{opacity:.85;transform:scale(.98)}.action-btn-primary 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rgba(255,255,255,.2);border-top-color:var(--accent);border-radius:50%;width:48px;height:48px;-webkit-animation:1s linear infinite spin;animation:1s linear infinite spin}.viewer3d-spinner.hidden{display:none}.viewer3d-loading-text{color:var(--text-secondary);font-size:14px}.viewer3d-close-btn{z-index:20;color:#fff;cursor:pointer;background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.2);border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:background .2s;display:flex;position:absolute;top:16px;right:16px}@supports (backdrop-filter:blur(8px)){.viewer3d-close-btn{backdrop-filter:blur(8px)}}.viewer3d-close-btn:active{background:rgba(255,255,255,.15)}.viewer3d-close-btn svg{width:20px;height:20px}.viewer3d-reset-btn{z-index:20;color:#ddd;cursor:pointer;background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:8px 16px;font-size:12px;transition:background .2s,color 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solid var(--border);justify-content:space-between;align-items:center;padding:18px 0 12px;display:flex}.apk-panel-title{color:var(--text-primary);font-size:16px;font-weight:600}.apk-panel-close{background:var(--bg-elevated);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;transition:background .2s;display:flex}.apk-panel-close:active{background:var(--border-light)}.apk-panel-close svg{width:16px;height:16px}.apk-panel-list{-webkit-overflow-scrolling:touch;max-height:50vh;padding:8px 0;overflow-y:auto}.apk-panel-loading{color:var(--text-secondary);justify-content:center;align-items:center;padding:32px 0;font-size:14px;display:flex}.apk-panel-loading>*+*{margin-left:8px}.apk-panel-spinner{border:2px solid var(--border-light);border-top-color:var(--accent);border-radius:50%;width:20px;height:20px;-webkit-animation:.8s linear infinite spin;animation:.8s linear infinite spin}.apk-panel-empty{text-align:center;color:var(--text-muted);padding:32px 0;font-size:14px}.apk-panel-item{border-bottom:1px solid var(--border);color:inherit;align-items:center;padding:14px 0;text-decoration:none;transition:background .15s;display:flex}.apk-panel-item:last-child{border-bottom:none}.apk-panel-item:active{background:var(--bg-elevated)}.apk-panel-item-icon{width:36px;height:36px;color:var(--accent);background:rgba(108,92,231,.1);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;margin-right:12px;display:flex}.apk-panel-item-icon svg{width:18px;height:18px}.apk-panel-item-name{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:14px;font-weight:500;overflow:hidden}.apk-panel-item-action{background:var(--accent);color:#fff;border-radius:16px;flex-shrink:0;margin-left:12px;padding:6px 16px;font-size:12px;font-weight:500}.platform-desktop .apk-panel-mask{align-items:center}.platform-desktop .apk-panel{border-radius:20px;max-width:400px;padding-bottom:20px}