:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fb;--bg-tertiary: #f0f2f5;--bg-card: #ffffff;--bg-hover: #f4f5f7;--bg-active: #eef0f4;--text-primary: #111318;--text-secondary: #5c6170;--text-muted: #9198a5;--text-inverse: #ffffff;--accent: #111318;--accent-soft: #353842;--accent-muted: rgba(17, 19, 24, .06);--blue: #2563eb;--blue-soft: rgba(37, 99, 235, .08);--blue-light: #eff4ff;--success: #16a34a;--warning: #d97706;--danger: #dc2626;--border: #e4e7ec;--border-strong: #d0d4dc;--border-active: #111318;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--radius-full: 9999px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06), 0 1px 3px rgba(0, 0, 0, .04);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .08), 0 2px 6px rgba(0, 0, 0, .04);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .1), 0 4px 12px rgba(0, 0, 0, .04);--transition-fast: .12s ease;--transition-base: .2s ease;--transition-slow: .35s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-secondary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv02","cv03","cv04","cv11"}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}.hidden{display:none!important}.loading-overlay{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);transition:opacity .5s ease,visibility .5s ease}.loading-overlay.fade-out{opacity:0;visibility:hidden}.loading-content{text-align:center}.loading-spinner{position:relative;width:48px;height:48px;margin:0 auto 20px}.spinner-ring{position:absolute;inset:0;border-radius:50%;border:2px solid var(--bg-tertiary);animation:spin 1s linear infinite}.spinner-ring:nth-child(1){border-top-color:var(--accent)}.spinner-ring:nth-child(2){inset:6px;border-right-color:var(--text-muted);animation-duration:1.5s;animation-direction:reverse}.spinner-ring:nth-child(3){inset:12px;border-bottom-color:var(--border-strong);animation-duration:2s}@keyframes spin{to{transform:rotate(360deg)}}.loading-title{font-size:24px;font-weight:800;color:var(--text-primary);letter-spacing:-.5px;margin-bottom:6px}.loading-text{color:var(--text-muted);font-size:13px;margin-bottom:20px}.loading-bar{width:160px;height:2px;background:var(--bg-tertiary);border-radius:1px;margin:0 auto;overflow:hidden}.loading-bar-fill{height:100%;width:0%;background:var(--accent);border-radius:1px;transition:width .3s ease}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--bg-secondary)}.header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;background:var(--bg-primary);border-bottom:1px solid var(--border);z-index:100;flex-shrink:0}.header-brand{display:flex;align-items:center;gap:10px}.logo-icon{width:30px;height:30px;display:flex;align-items:center;justify-content:center}.logo-icon svg{width:100%;height:100%}.brand-name{font-size:18px;font-weight:800;letter-spacing:-.4px;color:var(--text-primary)}.brand-accent{color:var(--text-primary);font-weight:800}.brand-tag{font-size:10px;color:var(--text-muted);font-weight:500;letter-spacing:.8px;text-transform:uppercase}.header-actions{display:flex;gap:6px;align-items:center}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;font-family:var(--font-sans);font-size:13px;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;text-decoration:none;transition:all var(--transition-fast);white-space:nowrap}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-primary{background:var(--accent);color:var(--text-inverse)}.btn-primary:hover{background:var(--accent-soft)}.btn-cta{width:100%;justify-content:center;padding:12px 24px;font-size:14px;font-weight:600;background:var(--accent);color:var(--text-inverse);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base)}.btn-cta:hover{background:var(--accent-soft);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-cta:active{transform:translateY(0);box-shadow:none}.main-layout{display:grid;grid-template-columns:1fr 380px;flex:1;overflow:hidden;min-height:0;gap:0}.viewer-section{display:flex;flex-direction:column;position:relative;background:var(--bg-primary);margin:12px 0 12px 12px;border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden}.drop-zone{flex:1;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;overflow:hidden;transition:background var(--transition-base)}.drop-zone:before{content:"";position:absolute;inset:24px;border:1.5px dashed var(--border);border-radius:var(--radius-lg);pointer-events:none;transition:all var(--transition-base)}.drop-zone:hover:before,.drop-zone.drag-over:before{border-color:var(--accent);background:var(--accent-muted)}.drop-zone.drag-over:before{animation:pulse-border 1.2s ease infinite}@keyframes pulse-border{0%,to{border-color:var(--accent)}50%{border-color:var(--border-strong)}}.drop-zone-content{text-align:center;z-index:1}.drop-icon{color:var(--text-muted);margin-bottom:16px}.drop-title{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:6px;letter-spacing:-.3px}.drop-subtitle{color:var(--text-muted);font-size:13px;margin-bottom:20px}.drop-formats{display:flex;gap:6px;justify-content:center;flex-wrap:wrap}.format-badge{padding:3px 10px;font-size:10px;font-weight:600;font-family:var(--font-mono);color:var(--text-muted);background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.8px}.viewer-container{flex:1;position:relative;background:var(--bg-tertiary)}.viewer-container canvas{width:100%;height:100%;display:block}.viewer-toolbar{position:absolute;top:10px;right:10px;display:flex;gap:2px;padding:3px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);z-index:10}.toolbar-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.toolbar-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.toolbar-btn.active{background:var(--accent-muted);color:var(--text-primary)}.toolbar-separator{width:1px;background:var(--border);margin:4px 2px}.viewer-file-info{position:absolute;bottom:10px;left:10px;display:flex;align-items:center;gap:6px;padding:5px 12px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-full);box-shadow:var(--shadow-sm);font-size:11px;font-weight:500;color:var(--text-secondary);z-index:10}.file-icon{font-size:13px;color:var(--text-muted)}.model-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--border);flex-shrink:0;background:var(--bg-primary)}.stat-item{display:flex;flex-direction:column;align-items:center;padding:10px 6px;border-right:1px solid var(--border)}.stat-item:last-child{border-right:none}.stat-label{font-size:9px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;margin-bottom:2px}.stat-value{font-size:12px;font-weight:600;font-family:var(--font-mono);color:var(--text-primary)}.configurator-section{display:flex;flex-direction:column;background:var(--bg-primary);margin:12px 12px 12px 0;border-radius:var(--radius-lg);border:1px solid var(--border);overflow-y:auto;overflow-x:hidden}.config-placeholder{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 32px;color:var(--text-secondary)}.placeholder-icon{font-size:36px;margin-bottom:14px;color:var(--text-muted)}.config-placeholder h3{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:6px;letter-spacing:-.2px}.config-placeholder p{font-size:13px;line-height:1.6;max-width:240px;color:var(--text-muted)}.config-panel{display:flex;flex-direction:column;min-height:0;overflow-y:auto}.config-section{padding:16px 18px;border-bottom:1px solid var(--border)}.section-title{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:700;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:.6px}.section-icon{width:16px;height:16px;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.section-icon svg{width:14px;height:14px}.material-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.material-card{position:relative;padding:10px 12px;background:var(--bg-primary);border:1.5px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);overflow:hidden}.material-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-xs)}.material-card.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.material-card:before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:var(--mat-color, var(--border));opacity:0;transition:opacity var(--transition-fast)}.material-card.active:before{opacity:1}.material-card-header{display:flex;align-items:center;gap:6px;margin-bottom:2px}.material-card-icon{width:6px;height:6px;border-radius:50%;background:var(--mat-color, var(--border-strong));flex-shrink:0}.material-card-name{font-size:12px;font-weight:700;color:var(--text-primary)}.material-card-price{font-size:10px;font-family:var(--font-mono);color:var(--text-muted);margin-left:12px}.material-card-desc{font-size:10px;color:var(--text-muted);line-height:1.4;margin-top:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.quality-options{display:grid;grid-template-columns:1fr 1fr;gap:6px}.quality-card{padding:10px;background:var(--bg-primary);border:1.5px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-align:center}.quality-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-xs)}.quality-card.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.quality-card-icon{font-size:14px;margin-bottom:4px;color:var(--text-muted);font-weight:600}.quality-card-name{font-size:11px;font-weight:700;color:var(--text-primary);margin-bottom:1px}.quality-card-layer{font-size:10px;font-family:var(--font-mono);color:var(--text-muted)}.infill-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.preset-btn{padding:10px 4px;background:var(--bg-primary);border:1.5px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:12px;font-weight:500;font-family:var(--font-sans);cursor:pointer;transition:all var(--transition-fast);text-align:center}.preset-btn:hover{border-color:var(--border-strong);background:var(--bg-hover)}.preset-btn.active{border-color:var(--accent);background:var(--accent-muted);color:var(--text-primary);font-weight:600;box-shadow:0 0 0 1px var(--accent)}.quantity-control{display:flex;align-items:center;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}.qty-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-secondary);font-size:18px;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans)}.qty-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.qty-input{flex:1;text-align:center;background:transparent;border:none;border-left:1px solid var(--border);border-right:1px solid var(--border);color:var(--text-primary);font-size:14px;font-weight:700;font-family:var(--font-mono);outline:none;-moz-appearance:textfield}.qty-input::-webkit-inner-spin-button,.qty-input::-webkit-outer-spin-button{-webkit-appearance:none}.discount-hint{margin-top:8px;padding:6px 10px;background:var(--blue-light);border:1px solid rgba(37,99,235,.12);border-radius:var(--radius-sm);font-size:11px;color:var(--blue);text-align:center}.discount-hint strong{font-weight:700}.price-summary{padding:16px 18px;margin-top:auto;border-top:1px solid var(--border)}.price-breakdown{margin-bottom:14px}.price-row{display:flex;justify-content:space-between;align-items:center;padding:4px 0;font-size:12px;color:var(--text-secondary)}.price-row span:last-child{font-family:var(--font-mono);font-weight:500;color:var(--text-primary);font-size:12px}.price-row-unit{font-weight:600}.price-row-unit span:last-child{color:var(--text-primary);font-weight:700}.price-row-time span:last-child{color:var(--text-muted)}.discount-amount{color:var(--success)!important}.price-divider{height:1px;background:var(--border);margin:6px 0}.price-total{text-align:center;padding:18px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:12px}.total-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-muted);margin-bottom:6px}.total-amount{display:flex;align-items:baseline;justify-content:center;gap:6px}.currency{font-size:14px;font-weight:600;color:var(--text-muted)}.total-number{font-size:32px;font-weight:800;font-family:var(--font-mono);color:var(--text-primary);line-height:1;letter-spacing:-1px}.total-quantity{font-size:11px;color:var(--text-muted);margin-top:4px}.order-form{display:flex;flex-direction:column;gap:8px}.phone-input{width:100%;padding:10px 14px;font-family:var(--font-sans);font-size:13px;color:var(--text-primary);background:var(--bg-primary);border:1.5px solid var(--border);border-radius:var(--radius-md);outline:none;transition:border-color var(--transition-fast)}.phone-input::placeholder{color:var(--text-muted)}.phone-input:focus{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.config-section{animation:fadeInUp .3s ease backwards}.config-section:nth-child(1){animation-delay:.03s}.config-section:nth-child(2){animation-delay:.06s}.config-section:nth-child(3){animation-delay:.09s}.config-section:nth-child(4){animation-delay:.12s}.price-summary{animation:fadeInUp .3s ease .15s backwards}@media(max-width:960px){.app{height:auto;min-height:100vh;overflow-y:auto}.main-layout{display:flex;flex-direction:column;min-height:0}.viewer-section{height:50vh;min-height:400px;margin:12px;flex-shrink:0}.configurator-section{margin:0 12px 12px;border-top:none;overflow-y:visible}.model-stats{grid-template-columns:repeat(2,1fr)}.header-actions .btn-ghost{display:none}}@media(max-width:600px){.header{padding:0 14px}.material-grid{grid-template-columns:1fr}.total-number{font-size:26px}.viewer-section{height:45vh;min-height:350px}}