:root{--bg-darkest: #0a0a14;--bg-dark: #0d1117;--bg-panel: #16213e;--bg-panel-light: #1e2a3a;--bg-hover: #2a3548;--bg-active: #3a4862;--color-gold: #c9a84c;--color-gold-light: #f0c040;--color-gold-dark: #8a6d2f;--color-amber: #ffb347;--text-primary: #e0d6c2;--text-secondary: #a0a0a0;--text-muted: #6a6a6a;--text-bright: #ffffff;--color-up: #e74c3c;--color-up-bg: rgba(231, 76, 60, .15);--color-down: #2ecc71;--color-down-bg: rgba(46, 204, 113, .15);--border-color: #2a3548;--border-gold: #4a3f1f;--border-light: #3a4862;--font-serif: Georgia, "Times New Roman", "STSong", serif;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;--font-mono: "Cascadia Code", "Consolas", "Courier New", monospace;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-panel: 0 4px 16px rgba(0, 0, 0, .4);--shadow-gold: 0 0 12px rgba(201, 168, 76, .3)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-darkest);color:var(--text-primary);font-size:14px;line-height:1.6}#root{height:100vh;display:flex;flex-direction:column}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-gold-dark)}.app-title{font-family:var(--font-serif);color:var(--color-gold);letter-spacing:2px}.panel{background:var(--bg-panel);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-panel)}.btn{padding:8px 16px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-panel-light);color:var(--text-primary);cursor:pointer;font-size:13px;transition:all .2s}.btn:hover{background:var(--bg-hover);border-color:var(--border-light)}.btn-gold{background:var(--color-gold-dark);border-color:var(--color-gold);color:var(--text-bright)}.btn-gold:hover{background:var(--color-gold)}.input,.select{padding:8px 12px;background:var(--bg-dark);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:13px;outline:none;transition:border-color .2s}.input:focus,.select:focus{border-color:var(--color-gold)}.select option{background:var(--bg-dark)}.tag{display:inline-block;padding:2px 8px;border-radius:var(--radius-sm);font-size:11px;font-weight:600}.tag-gold{background:#c9a84c26;color:var(--color-gold-light);border:1px solid var(--color-gold-dark)}.price-up{color:var(--color-up)}.price-down{color:var(--color-down)}.price-neutral{color:var(--text-secondary)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border-color);border-top-color:var(--color-gold);border-radius:50%;animation:spin .8s linear infinite}@keyframes shimmer{0%{background-position:-200px 0}to{background-position:calc(200px + 100%) 0}}.skeleton{background:linear-gradient(90deg,var(--bg-panel) 25%,var(--bg-panel-light) 50%,var(--bg-panel) 75%);background-size:200px 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;color:var(--text-muted);text-align:center}.empty-state-icon{font-size:48px;margin-bottom:12px;opacity:.5}.item-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--bg-darkest);border:1px solid var(--border-color);object-fit:contain}.item-icon-sm{width:32px;height:32px}.item-icon-lg{width:64px;height:64px}.price-text{font-family:var(--font-mono);font-weight:600}.data-table{width:100%;border-collapse:collapse}.data-table th{padding:10px 12px;text-align:left;font-size:12px;font-weight:600;color:var(--text-secondary);border-bottom:2px solid var(--border-color);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}.data-table td{padding:10px 12px;border-bottom:1px solid var(--border-color);font-size:13px}.data-table tr:hover td{background:var(--bg-hover)}.progress-bar{height:4px;background:var(--bg-dark);border-radius:2px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--color-gold);transition:width .3s}.app{display:flex;flex-direction:column;height:100vh;background:var(--bg-darkest)}.app-main{flex:1;overflow:hidden;padding:0}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:linear-gradient(180deg,var(--bg-panel) 0%,var(--bg-dark) 100%);border-bottom:2px solid var(--border-gold);box-shadow:0 2px 12px #00000080;z-index:100}.header-left{display:flex;align-items:center;gap:12px}.app-logo{font-size:28px;filter:drop-shadow(0 0 8px 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.2s}.nav-tab:hover{color:var(--text-primary);background:var(--bg-panel-light)}.nav-tab.active{color:var(--color-gold);border-bottom-color:var(--color-gold);background:var(--bg-panel)}.nav-tab-icon{font-size:16px}.city-selector{display:flex;flex-wrap:wrap;gap:6px}.city-card{display:flex;flex-direction:column;align-items:center;padding:8px 12px;background:var(--bg-panel-light);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;transition:all 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var(--color-gold)}.category-toggle{font-size:10px;width:12px;color:var(--text-muted)}.category-icon{font-size:16px}.category-children{padding-left:8px}.subcategory-item{display:flex;align-items:center;gap:6px;padding:6px 14px 6px 32px;cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s}.subcategory-item:hover{background:var(--bg-hover);color:var(--text-primary)}.subcategory-item.active{background:#c9a84c1a;color:var(--color-gold);border-left:3px solid var(--color-gold)}.subcategory-dot{color:var(--text-muted)}.market-content{display:flex;flex-direction:column;overflow:hidden}.content-header{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--border-color)}.filter-bar{display:flex;gap:10px;flex:1}.filter-group{display:flex;align-items:center;gap:4px}.filter-label{font-size:11px;color:var(--text-muted);white-space:nowrap}.item-list-container{flex:1;display:flex;flex-direction:column;overflow:hidden}.item-list-header{display:flex;justify-content:space-between;padding:6px 14px;font-size:12px;color:var(--text-muted);border-bottom:1px solid var(--border-color)}.item-list{flex:1;overflow-y:auto}.item-row{cursor:pointer;transition:background .15s}.item-row:hover td{background:var(--bg-hover)!important}.item-row.selected td{background:#c9a84c1a!important;border-left:3px solid var(--color-gold)}.item-name-cell{font-weight:500}.item-list-table th{font-size:11px;color:var(--text-secondary);line-height:1.3}.item-list-table 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var(--color-down)}.price-stat-label{font-size:11px;color:var(--text-muted);margin-bottom:6px}.price-stat-value{font-size:22px;font-family:var(--font-mono);font-weight:700;margin-bottom:4px}.price-stat-city{font-size:12px;color:var(--text-secondary)}.market-detail{overflow-y:auto;overflow-x:hidden}.item-detail{padding:16px;display:flex;flex-direction:column;gap:16px}.item-detail-header{display:flex;align-items:center;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--border-color)}.item-detail-info{flex:1}.item-detail-name{font-family:var(--font-serif);font-size:18px;color:var(--color-gold);margin-bottom:8px}.item-detail-tags{display:flex;flex-wrap:wrap;gap:6px}.section-title{font-size:14px;color:var(--color-gold);margin-bottom:10px;font-weight:600}.order-book-section{border-top:1px solid var(--border-color);padding-top:14px}.order-book{display:grid;grid-template-columns:1fr 1fr;gap:10px}.order-book-side{background:var(--bg-dark);border:1px solid 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var(--border-color);align-items:center}.order-book-row:hover{background:var(--bg-hover)}.order-price{font-family:var(--font-mono);font-weight:600;min-width:70px}.order-price-range{font-family:var(--font-mono);font-size:11px;color:var(--text-muted);min-width:80px}.order-city{font-size:11px;color:var(--text-secondary);text-align:right}.order-time{font-size:10px;color:var(--text-muted)}.order-empty{padding:20px;text-align:center;color:var(--text-muted);font-size:12px}.history-section{border-top:1px solid var(--border-color);padding-top:14px}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.time-scale-tabs{display:flex;gap:4px}.time-scale-tab{padding:4px 10px;background:var(--bg-dark);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;font-size:11px;transition:all .15s}.time-scale-tab:hover{background:var(--bg-hover)}.time-scale-tab.active{background:#c9a84c26;border-color:var(--color-gold);color:var(--color-gold)}.history-chart{height:220px;position:relative}.price-comparison{height:100%;overflow-y:auto;padding:16px 24px}.page-header{padding:16px 20px;margin-bottom:12px}.page-title{font-family:var(--font-serif);font-size:22px;color:var(--color-gold);margin-bottom:6px}.page-desc{font-size:13px;color:var(--text-secondary);margin-bottom:12px}.search-row{max-width:600px}.comparison-item-card{display:flex;align-items:center;gap:14px;padding:14px 20px;margin-bottom:12px}.comparison-item-info{flex:1}.comparison-item-info h3{font-family:var(--font-serif);color:var(--color-gold);margin-bottom:6px}.comparison-item-tags{display:flex;gap:6px}.profit-summary{display:flex;gap:24px;padding-left:20px;border-left:1px solid var(--border-color)}.profit-summary-item{display:flex;flex-direction:column;align-items:center}.profit-label{font-size:11px;color:var(--text-muted)}.profit-value{font-size:16px;font-weight:700}.comparison-table{padding:0;overflow:hidden}.loading-center{display:flex;align-items:center;justify-content:center;padding:40px;color:var(--text-muted)}.profit-calculator{height:100%;overflow-y:auto;padding:16px 24px}.calculator-main{padding:16px 20px;margin-bottom:12px}.calculator-row{display:flex;align-items:center;gap:16px;margin-bottom:12px;flex-wrap:wrap}.calculator-field{display:flex;flex-direction:column;gap:4px}.calculator-arrow{font-size:24px;color:var(--color-gold);margin-top:20px}.field-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.premium-toggle{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:13px;padding:8px 0}.premium-toggle input{width:16px;height:16px;accent-color:var(--color-gold)}.calculator-result{margin-top:16px;padding-top:16px;border-top:1px solid var(--border-color)}.result-item-card{display:flex;align-items:center;gap:12px;margin-bottom:16px}.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}.result-cell{display:flex;flex-direction:column;padding:10px 14px;background:var(--bg-dark);border:1px solid var(--border-color);border-radius:var(--radius-sm)}.result-cell.cost{opacity:.85}.result-cell.highlight{border-width:2px}.result-cell.highlight.profit{background:var(--color-up-bg);border-color:var(--color-up)}.result-cell.highlight.loss{background:var(--color-down-bg);border-color:var(--color-down)}.result-label{font-size:11px;color:var(--text-muted);margin-bottom:4px}.result-value{font-size:14px;color:var(--text-bright)}.result-route-tag{display:flex;align-items:center;gap:8px;margin-bottom:12px;font-size:12px;color:var(--text-muted)}.route-tag{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;background:var(--bg-panel-light);border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:12px;color:var(--text-primary);white-space:nowrap}.route-tag-arrow{color:var(--color-gold);margin:0 2px;font-weight:700}.route-recommendation{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;margin-bottom:14px;background:#2ecc7114;border:1px solid rgba(46,204,113,.3);border-radius:var(--radius-sm)}.route-recommendation-icon{font-size:18px;flex-shrink:0;margin-top:2px}.route-recommendation-title{font-size:12px;color:var(--text-secondary);margin-bottom:6px;line-height:1.4}.route-recommendation-route{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--color-up)}.route-arrow{color:var(--text-muted);margin:0 4px}.profit-ranking{padding:16px 20px}.ranking-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.gold-tracker{height:100%;overflow-y:auto;padding:16px 24px}.gold-price-display{padding:24px;margin-bottom:12px}.gold-current{display:flex;align-items:baseline;gap:16px;margin-bottom:20px}.gold-current-label{font-size:14px;color:var(--text-secondary)}.gold-current-value{font-size:36px;color:var(--color-gold-light);font-weight:700;letter-spacing:1px}.gold-current-change{font-size:16px;font-weight:600}.gold-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.gold-stat-item{display:flex;flex-direction:column;align-items:center;padding:12px;background:var(--bg-dark);border:1px solid var(--border-color);border-radius:var(--radius-sm)}.stat-label{font-size:11px;color:var(--text-muted);margin-bottom:4px}.stat-value{font-size:18px;font-weight:700}.gold-chart-container{padding:16px 20px}.gold-chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.range-tabs{display:flex;gap:4px}.range-tab{padding:4px 12px;background:var(--bg-dark);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;font-size:12px;transition:all .15s}.range-tab:hover{background:var(--bg-hover)}.range-tab.active{background:#c9a84c26;border-color:var(--color-gold);color:var(--color-gold)}.gold-chart{height:320px;position:relative}.item-picker{background:var(--bg-panel);border:1px solid var(--border-color);border-radius:var(--radius-sm);overflow:hidden}.item-picker-filter{border-bottom:1px solid var(--border-color);padding:8px 12px}.item-picker-body{display:grid;grid-template-columns:160px 1fr;overflow:hidden}.item-picker-tree{border-right:1px solid var(--border-color);overflow-y:auto;background:var(--bg-dark)}.item-picker-list{overflow-y:auto;padding:4px}.item-picker-row{display:flex;align-items:center;gap:8px;padding:6px 10px;cursor:pointer;border-radius:var(--radius-sm);transition:background 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