:root {
             --bg-main: #05070a;
             --bg-accent: #0a0d14;
             --glass: rgba(255, 255, 255, 0.035);
             --glass-hover: rgba(255, 255, 255, 0.06);
             --border: rgba(255, 255, 255, 0.08);
             --border-bright: rgba(255, 255, 255, 0.15);
             --primary: #3e81f6;
             --primary-glow: rgba(62, 129, 246, 0.35);
             --secondary: #a78bfa;
             --success: #10b981;
             --warning: #f59e0b;
             --danger: #f43f5e;
             --text-main: #f8fafc;
             --text-muted: rgba(248, 250, 252, 0.58);
             --ease: cubic-bezier(0.23, 1, 0.32, 1);
             --radius-xl: 24px;
             --radius-lg: 18px;
             --radius-md: 12px;
             --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.35);
             --shadow-lift: 0 22px 80px rgba(0, 0, 0, 0.45);
             --shadow-glow: 0 0 20px rgba(62, 129, 246, 0.2);
         }
         
         * {
             margin: 0;
             padding: 0;
             box-sizing: border-box;
             -webkit-font-smoothing: antialiased;
         }
         
         html,
         body {
             height: 100%;
             width: 100%;
             overflow: auto;
         }
         /* Responsive Layout Improvements */
         
         @media (max-width: 768px) {
             .hdr {
                 padding: 0 20px;
                 height: auto;
                 padding-top: 20px;
                 padding-bottom: 20px;
                 flex-direction: column;
                 align-items: flex-start;
                 gap: 15px;
             }
             .cnt {
                 padding: 16px;
             }
             .hero-title {
                 font-size: 1.8rem;
             }
             .hero-desc {
                 font-size: 0.95rem;
             }
             .dash {
                 grid-template-columns: 1fr;
                 gap: 20px;
             }
             .card {
                 padding: 20px;
             }
             .btn {
                 padding: 12px 16px;
                 font-size: 0.85rem;
             }
         }
         /* 自定义下拉选择器样式 */
         
         .custom-select {
             position: relative;
             width: 100%;
             user-select: none;
         }
         
         .select-trigger {
             width: 100%;
             padding: 14px 16px;
             border-radius: 14px;
             background: rgba(0, 0, 0, 0.22);
             border: 1px solid rgba(255, 255, 255, 0.09);
             color: var(--text-main);
             cursor: pointer;
             display: flex;
             align-items: center;
             justify-content: space-between;
             transition: all 0.25s var(--ease);
         }
         
         .select-trigger:hover {
             border-color: rgba(255, 255, 255, 0.16);
             background: rgba(0, 0, 0, 0.28);
         }
         
         .custom-select.open .select-trigger {
             border-color: var(--primary);
             box-shadow: 0 0 0 4px rgba(62, 129, 246, 0.18);
             background: rgba(0, 0, 0, 0.32);
         }
         
         .select-trigger i {
             font-size: 0.8rem;
             transition: transform 0.3s var(--ease);
             opacity: 0.5;
         }
         
         .custom-select.open .select-trigger i {
             transform: rotate(180deg);
             opacity: 1;
             color: var(--primary);
         }
         
         .select-dropdown {
             position: absolute;
             top: calc(100% + 8px);
             left: 0;
             width: 100%;
             background: #0f121a;
             border: 1px solid var(--border-bright);
             border-radius: 16px;
             padding: 8px;
             z-index: 1000;
             box-shadow: var(--shadow-lift);
             opacity: 0;
             visibility: hidden;
             transform: translateY(10px);
             transition: all 0.3s var(--ease);
             backdrop-filter: blur(20px);
         }
         
         .custom-select.open .select-dropdown {
             opacity: 1;
             visibility: visible;
             transform: translateY(0);
         }
         
         .select-search-container {
             padding: 4px;
             margin-bottom: 8px;
             border-bottom: 1px solid var(--border);
         }
         
         .select-search {
             width: 100%;
             padding: 10px 12px;
             background: rgba(255, 255, 255, 0.03);
             border: 1px solid var(--border);
             border-radius: 10px;
             color: var(--text-main);
             font-size: 0.85rem;
             outline: none;
         }
         
         .select-options {
             max-height: 220px;
             overflow-y: auto;
         }
         
         .select-option {
             padding: 10px 14px;
             border-radius: 10px;
             cursor: pointer;
             font-size: 0.9rem;
             color: var(--text-muted);
             transition: all 0.2s var(--ease);
             display: flex;
             align-items: center;
             gap: 10px;
         }
         
         .select-option:hover {
             background: var(--glass);
             color: var(--text-main);
         }
         
         .select-option.selected {
             background: rgba(62, 129, 246, 0.1);
             color: var(--primary);
             font-weight: 600;
         }
         
         .select-option.hidden {
             display: none;
         }
         /* 输入框微调 */
         
         input:focus,
         textarea:focus {
             border-color: var(--primary);
             background: rgba(0, 0, 0, 0.32);
             box-shadow: 0 0 0 4px rgba(62, 129, 246, 0.18), var(--shadow-glow);
             transform: translateY(-1px);
         }
         /* AI 助手按钮与弹窗 */
         
         .ai-assist-btn {
             background: linear-gradient(135deg, var(--secondary), var(--primary));
             padding: 6px 12px;
             border-radius: 8px;
             font-size: 0.75rem;
             font-weight: 700;
             display: inline-flex;
             align-items: center;
             gap: 6px;
             cursor: pointer;
             transition: all 0.3s var(--ease);
             border: none;
             color: white;
             margin-bottom: 8px;
         }
         
         .ai-assist-btn:hover {
             transform: translateY(-2px);
             box-shadow: 0 4px 12px var(--primary-glow);
         }
         
         .ai-dialog {
             position: fixed;
             top: 50%;
             left: 50%;
             transform: translate(-50%, -50%) scale(0.9);
             width: 400px;
             background: rgba(15, 18, 26, 0.95);
             backdrop-filter: blur(30px);
             border: 1px solid var(--border-bright);
             border-radius: 24px;
             padding: 24px;
             z-index: 2000;
             box-shadow: var(--shadow-lift);
             opacity: 0;
             visibility: hidden;
             transition: all 0.3s var(--ease);
         }
         
         .ai-dialog.show {
             opacity: 1;
             visibility: visible;
             transform: translate(-50%, -50%) scale(1);
         }
         
         .ai-overlay {
             position: fixed;
             inset: 0;
             background: rgba(0, 0, 0, 0.6);
             backdrop-filter: blur(4px);
             z-index: 1999;
             display: none;
         }
         
         .ai-overlay.show {
             display: block;
         }
         
         .ai-input {
             background: rgba(255, 255, 255, 0.05);
             border: 1px solid var(--border);
             border-radius: 12px;
             padding: 12px;
             color: white;
             width: 100%;
             margin: 16px 0;
             resize: none;
         }
         
         .info-tip {
             display: inline-flex;
             align-items: center;
             justify-content: center;
             width: 14px;
             height: 14px;
             background: rgba(255, 255, 255, 0.1);
             border-radius: 50%;
             font-size: 9px;
             margin-left: 6px;
             cursor: help;
             color: var(--text-muted);
             position: relative;
             vertical-align: middle;
         }
         
         .info-tip:hover {
             background: var(--primary);
             color: white;
         }
         
         .info-tip::after {
             content: attr(data-tip);
             position: absolute;
             bottom: 125%;
             left: 50%;
             transform: translateX(-50%);
             padding: 8px 12px;
             background: #1a1f2e;
             color: var(--text-main);
             font-size: 0.75rem;
             border-radius: 8px;
             white-space: nowrap;
             opacity: 0;
             visibility: hidden;
             transition: all 0.2s var(--ease);
             box-shadow: var(--shadow-lift);
             border: 1px solid var(--border-bright);
             z-index: 1000;
             text-transform: none;
             letter-spacing: 0;
             font-weight: 500;
         }
         
         .info-tip:hover::after {
             opacity: 1;
             visibility: visible;
             bottom: 150%;
         }
         
         body {
             font-family: 'Plus Jakarta Sans', sans-serif;
             color: var(--text-main);
             background: radial-gradient(1200px 700px at 20% -10%, rgba(62, 129, 246, 0.08), transparent 55%), radial-gradient(1000px 650px at 90% 0%, rgba(167, 139, 250, 0.07), transparent 55%), radial-gradient(900px 600px at 50% 110%, rgba(16, 185, 129, 0.05), transparent 55%), var(--bg-main);
             display: flex;
         }
         
         .row,
         .row3 {
             display: flex;
             gap: 16px;
         }
         
         .row>.fg,
         .row3>.fg {
             flex: 1;
         }
         
         @media(max-width: 860px) {
             .row,
             .row3 {
                 flex-direction: column;
                 gap: 12px;
             }
         }
         /* 动态流体背景 */
         
         .bg-mesh {
             position: fixed;
             inset: 0;
             z-index: -1;
             background: radial-gradient(circle at 10% 10%, rgba(62, 129, 246, 0.12), transparent 40%), radial-gradient(circle at 90% 10%, rgba(167, 139, 250, 0.1), transparent 40%), radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.05), transparent 40%);
             filter: blur(80px);
         }
         
          ::-webkit-scrollbar {
             width: 5px;
         }
         
          ::-webkit-scrollbar-track {
             background: transparent;
         }
         
          ::-webkit-scrollbar-thumb {
             background: rgba(255, 255, 255, 0.1);
             border-radius: 10px;
         }
         
          ::-webkit-scrollbar-thumb:hover {
             background: rgba(255, 255, 255, 0.2);
         }
         /* 侧边栏 */
         
         .sb {
             width: 280px;
             background: rgba(5, 7, 10, 0.45);
             backdrop-filter: blur(40px);
             -webkit-backdrop-filter: blur(40px);
             border-right: 1px solid var(--border);
             display: flex;
             flex-direction: column;
             z-index: 100;
             padding: 12px 0;
         }
         
         .sb-brand {
             padding: 24px 28px 32px;
             display: flex;
             align-items: center;
             gap: 14px;
         }
         
         .sb-brand span {
             font-size: 1.15rem;
             font-weight: 900;
             letter-spacing: -0.03em;
             background: linear-gradient(to right, #fff, rgba(255, 255, 255, 0.7));
             -webkit-background-clip: text;
             color: transparent;
         }
         
         .brand-icon {
             width: 42px;
             height: 42px;
             background: linear-gradient(135deg, var(--primary), var(--secondary));
             border-radius: 12px;
             display: grid;
             place-items: center;
             box-shadow: 0 8px 20px rgba(62, 129, 246, 0.3);
             font-size: 1.2rem;
         }
         
         .sb-lbl {
             padding: 24px 28px 12px;
             font-size: 0.7rem;
             text-transform: uppercase;
             letter-spacing: 0.2em;
             color: var(--text-muted);
             font-weight: 800;
             opacity: 0.6;
         }
         
         .sb-item {
             margin: 4px 16px;
             padding: 14px 18px;
             border-radius: var(--radius-md);
             cursor: pointer;
             display: flex;
             align-items: center;
             gap: 14px;
             color: var(--text-muted);
             transition: all 0.3s var(--ease);
             font-weight: 600;
             font-size: 0.92rem;
             position: relative;
         }
         
         .sb-item i {
             font-size: 1.1rem;
             width: 20px;
             text-align: center;
             transition: all 0.3s var(--ease);
         }
         
         .sb-item:hover {
             background: var(--glass);
             color: var(--text-main);
         }
         
         .sb-item.active {
             background: rgba(255, 255, 255, 0.05);
             color: var(--primary);
             box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
         }
         
         .sb-item.active::before {
             content: "";
             position: absolute;
             left: 0;
             top: 20%;
             height: 60%;
             width: 4px;
             background: var(--primary);
             border-radius: 0 4px 4px 0;
             box-shadow: 4px 0 12px var(--primary-glow);
         }
         
         .sb-foot {
             margin-top: auto;
             padding: 24px 28px;
             border-top: 1px solid var(--border);
             font-size: 0.8rem;
             color: var(--text-muted);
             display: flex;
             align-items: center;
             gap: 12px;
         }
         
         .sys-dot {
             width: 10px;
             height: 10px;
             border-radius: 50%;
             background: var(--text-muted);
         }
         
         .sys-dot.sys-ok {
             background: var(--success);
             box-shadow: 0 0 12px var(--success);
         }
         
         .sys-dot.sys-off {
             background: var(--danger);
             box-shadow: 0 0 12px var(--danger);
         }
         /* 主区域 */
         
         .main {
             flex: 1;
             display: flex;
             flex-direction: column;
             position: relative;
             overflow: hidden;
         }
         
         .hdr {
             height: 80px;
             padding: 0 40px;
             display: flex;
             align-items: center;
             justify-content: space-between;
             background: rgba(5, 7, 10, 0.2);
             backdrop-filter: blur(20px);
             -webkit-backdrop-filter: blur(20px);
             border-bottom: 1px solid var(--border);
         }
         
         .hdr h2 {
             font-size: 1.25rem;
             font-weight: 800;
             letter-spacing: -0.02em;
         }
         
         .hdr-sub {
             font-size: 0.85rem;
             color: var(--text-muted);
             margin-top: 2px;
         }
         
         .badge {
             padding: 6px 14px;
             border-radius: 99px;
             font-size: 0.72rem;
             font-weight: 700;
             display: inline-flex;
             align-items: center;
             gap: 6px;
             background: var(--glass);
             border: 1px solid var(--border);
         }
         
         .badge-ok {
             color: var(--success);
             border-color: rgba(16, 185, 129, 0.2);
             background: rgba(16, 185, 129, 0.05);
         }
         
         .badge-warn {
             color: var(--warning);
             border-color: rgba(245, 158, 11, 0.2);
             background: rgba(245, 158, 11, 0.05);
         }
         
         .cnt {
             flex: 1;
             padding: 40px;
             overflow-y: auto;
             scroll-behavior: smooth;
         }
         /* 卡片样式 */
         
         .tab {
             display: none;
             animation: slideUp 0.8s var(--ease);
         }
         
         .tab.show {
             display: block;
         }
         
         @keyframes slideUp {
             from {
                 opacity: 0;
                 transform: translateY(30px);
                 filter: blur(10px);
             }
             to {
                 opacity: 1;
                 transform: translateY(0);
                 filter: blur(0);
             }
         }
         
         .hero {
             margin-bottom: 40px;
         }
         
         .hero-title {
             font-size: 2.8rem;
             font-weight: 900;
             letter-spacing: -0.05em;
             line-height: 1.1;
         }
         
         .hero-title span {
             background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
             -webkit-background-clip: text;
             color: transparent;
             filter: drop-shadow(0 0 20px rgba(167, 139, 250, 0.3));
         }
         
         .hero-desc {
             color: var(--text-muted);
             margin-top: 12px;
             font-size: 1.1rem;
             font-weight: 500;
             max-width: 600px;
             line-height: 1.6;
         }
         
         .dash {
             display: grid;
             grid-template-columns: 1fr 480px;
             gap: 32px;
             align-items: stretch;
         }
         
         @media(max-width: 1300px) {
             .dash {
                 grid-template-columns: 1fr;
             }
         }
         
         .card {
             background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
             border: 1px solid var(--border);
             border-radius: 28px;
             padding: 32px;
             transition: all 0.5s var(--ease);
             box-shadow: var(--shadow-soft);
             position: relative;
             overflow: hidden;
         }
         
         .card:hover {
             border-color: var(--border-bright);
             background: linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
             transform: translateY(-4px);
             box-shadow: var(--shadow-lift);
         }
         
         .card-t {
             display: flex;
             align-items: center;
             gap: 14px;
             font-weight: 800;
             font-size: 1.1rem;
             margin-bottom: 28px;
             color: var(--text-main);
             letter-spacing: -0.01em;
         }
         
         .card-t i {
             width: 32px;
             height: 32px;
             background: var(--glass);
             border-radius: 8px;
             display: grid;
             place-items: center;
             font-size: 0.9rem;
             color: var(--primary);
         }
         /* 输入控件 */
         
         .chip-row {
             display: flex;
             flex-wrap: wrap;
             gap: 8px;
             margin-top: 10px;
         }
         
         .chip {
             padding: 6px 10px;
             border-radius: 999px;
             border: 1px solid var(--border);
             background: rgba(255, 255, 255, 0.03);
             color: var(--text-muted);
             font-size: 0.72rem;
             font-weight: 700;
             cursor: pointer;
             transition: all 0.25s var(--ease);
         }
         
         .chip:hover {
             background: var(--glass-hover);
             color: var(--text-main);
             border-color: var(--border-bright);
             transform: translateY(-1px);
         }
         
         .chip:active {
             transform: translateY(0);
         }
         
         .fg {
             margin-bottom: 18px;
         }
         
         .fg label {
             display: block;
             margin-bottom: 10px;
             font-size: 0.78rem;
             color: rgba(248, 250, 252, 0.62);
             font-weight: 800;
             letter-spacing: 0.06em;
             text-transform: uppercase;
         }
         
         input,
         select,
         textarea {
             width: 100%;
             padding: 14px 16px;
             border-radius: 14px;
             background: rgba(0, 0, 0, 0.22);
             border: 1px solid rgba(255, 255, 255, 0.09);
             color: var(--text-main);
             font-family: inherit;
             font-size: 0.95rem;
             transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.25s var(--ease), background 0.25s var(--ease);
         }
         
         input::placeholder,
         textarea::placeholder {
             color: rgba(248, 250, 252, 0.35);
         }
         
         input:hover,
         select:hover,
         textarea:hover {
             border-color: rgba(255, 255, 255, 0.16);
             background: rgba(0, 0, 0, 0.28);
         }
         
         input:focus,
         select:focus,
         textarea:focus {
             outline: none;
             border-color: rgba(62, 129, 246, 0.65);
             background: rgba(0, 0, 0, 0.32);
             box-shadow: 0 0 0 4px rgba(62, 129, 246, 0.18);
         }
         
         textarea {
             resize: vertical;
             min-height: 96px;
         }
         
         .mode-sel {
             display: flex;
             gap: 4px;
             padding: 4px;
             background: rgba(0, 0, 0, 0.2);
             border-radius: 99px;
             border: 1px solid var(--border);
             margin-bottom: 24px;
         }
         
         .mode-btn {
             flex: 1;
             padding: 10px;
             border: none;
             background: transparent;
             color: var(--text-muted);
             cursor: pointer;
             border-radius: 99px;
             font-size: 0.8rem;
             font-weight: 700;
             transition: all 0.4s var(--ease);
         }
         
         .mode-btn.active {
             background: white;
             color: black;
             box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
         }
         .podcast-tabs.mode-sel {
             display: inline-flex !important;
             width: auto !important;
             max-width: max-content !important;
             align-self: flex-start;
             padding: 2px !important;
             gap: 2px !important;
             border-radius: 16px !important;
         }

         .podcast-tabs.mode-sel .mode-btn {
             flex: 0 0 auto !important;
             width: auto !important;
             display: inline-flex;
             align-items: center;
             justify-content: center;
             gap: 6px;
             min-height: 30px !important;
             padding: 4px 12px !important;
             border-radius: 12px;
             font-size: 1.04rem;
             line-height: 1;
         }

         .podcast-tabs.mode-sel .mode-btn i {
             font-size: 0.92rem;
             opacity: 0.82;
         }

         .podcast-tabs.mode-sel .mode-btn.active {
             box-shadow: 0 2px 8px rgba(255, 255, 255, 0.14);
         }
         /* 丝滑按钮 */
         
         .btn {
             position: relative;
             overflow: hidden;
             padding: 16px 24px;
             border-radius: var(--radius-md);
             border: none;
             font-weight: 800;
             font-size: 0.95rem;
             cursor: pointer;
             display: flex;
             align-items: center;
             justify-content: center;
             gap: 10px;
             transition: all 0.4s var(--ease);
             color: white;
         }
         
         .btn::after {
             content: "";
             position: absolute;
             top: -50%;
             left: -50%;
             width: 200%;
             height: 200%;
             background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
             transform: rotate(45deg) translate(-100%, -100%);
             transition: transform 0.6s var(--ease);
         }
         
         .btn:hover:not(:disabled) {
             transform: translateY(-2px);
             filter: brightness(1.1);
         }
         
         .btn:hover::after {
             transform: rotate(45deg) translate(100%, 100%);
         }
         
         .btn:active {
             transform: translateY(0);
         }
         
         .btn:disabled {
             opacity: 0.4;
             cursor: not-allowed;
         }
         
         .btn-p {
             background: var(--primary);
             box-shadow: 0 8px 24px var(--primary-glow);
         }
         
         .btn-g {
             background: var(--success);
             box-shadow: 0 8px 24px rgba(16, 185, 129, 0.2);
         }
         
         .btn-v {
             background: var(--secondary);
             box-shadow: 0 8px 24px rgba(167, 139, 250, 0.2);
         }
         
         .btn-s {
             background: var(--glass);
             border: 1px solid var(--border);
             width: auto;
             font-size: 0.8rem;
             padding: 10px 18px;
             color: var(--text-main);
         }
         /* 输出区域 */
         
         .out-box {
             min-height: 340px;
             display: flex;
             flex-direction: column;
             align-items: center;
             justify-content: center;
             border: 1px dashed var(--border);
             border-radius: var(--radius-xl);
             background: rgba(255, 255, 255, 0.01);
             transition: all 0.5s var(--ease);
         }
         
         .out-box.has-audio {
             border-style: solid;
             background: rgba(16, 185, 129, 0.03);
             border-color: rgba(16, 185, 129, 0.2);
         }
         
         audio {
             width: 100%;
             margin-top: 24px;
             height: 44px;
             border-radius: 12px;
             filter: invert(1) hue-rotate(180deg) opacity(0.85);
         }
         /* QQ音乐风格结果列表 */
         
         .track-list {
             width: 100%;
             display: flex;
             flex-direction: column;
             gap: 10px;
         }
         
         .track-row {
             display: flex;
             gap: 12px;
             padding: 10px 12px;
             border-radius: 16px;
             background: rgba(15, 23, 42, 0.6);
             border: 1px solid rgba(148, 163, 184, 0.25);
             align-items: center;
             box-shadow: 0 10px 30px rgba(15, 23, 42, 0.6);
         }
         
         .track-row.skeleton {
             opacity: 0.75;
         }
         
         .track-cover {
             position: relative;
             width: 52px;
             height: 52px;
             border-radius: 14px;
             overflow: hidden;
             flex-shrink: 0;
             background: radial-gradient(circle at 0 0, rgba(148, 163, 184, 0.5), transparent), radial-gradient(circle at 100% 100%, rgba(94, 234, 212, 0.4), transparent);
             border: 1px solid rgba(148, 163, 184, 0.4);
         }
         
         .track-cover-bg {
             position: absolute;
             inset: 0;
             background-size: cover;
             background-position: center;
             /* 默认稍微提亮，让图片更清晰 */
             filter: brightness(1.05);
         }
         
         .track-cover-overlay {
             position: absolute;
             inset: 0;
             display: flex;
             align-items: center;
             justify-content: center;
             /* 默认很浅的遮罩，几乎不变暗 */
             background: radial-gradient(circle at 30% 0%, rgba(15, 23, 42, 0.12), transparent), radial-gradient(circle at 100% 100%, rgba(15, 23, 42, 0.18), rgba(15, 23, 42, 0.28));
             transition: background 0.25s var(--ease);
         }
         /* 暂停时或播放中悬停时，加深遮罩效果 */
         
         .track-cover[data-playing="false"] .track-cover-overlay,
         .track-cover.hovering .track-cover-overlay {
             background: radial-gradient(circle at 30% 0%, rgba(15, 23, 42, 0.26), transparent), radial-gradient(circle at 100% 100%, rgba(15, 23, 42, 0.45), rgba(15, 23, 42, 0.7));
         }
         
         .track-cover-play {
             width: 22px;
             height: 22px;
             border-radius: 999px;
             border: 1px solid rgba(248, 250, 252, 0.6);
             background: rgba(15, 23, 42, 0.85);
             display: flex;
             align-items: center;
             justify-content: center;
             color: #e5e7eb;
             font-size: 10px;
             box-shadow: 0 0 12px rgba(148, 163, 184, 0.6);
             opacity: 1;
             transition: opacity 0.25s var(--ease);
         }
         
         .track-cover[data-playing="true"] .track-cover-play {
             opacity: 0;
             /* 播放中默认隐藏，悬停时再显示为暂停按钮 */
         }
         
         .track-cover-loading-icon {
             color: rgba(226, 232, 240, 0.8);
             font-size: 14px;
         }
         
         .cover-progress {
             position: absolute;
             left: 0;
             right: 0;
             bottom: 0;
             height: 3px;
             background: rgba(15, 23, 42, 0.85);
         }
         
         .cover-progress-fill {
             height: 100%;
             width: 0%;
             background: linear-gradient(90deg, var(--primary), var(--secondary));
             transition: width 0.35s var(--ease);
         }
         
         .track-main {
             flex: 1;
             min-width: 0;
             overflow: hidden;
             display: flex;
             flex-direction: column;
             gap: 4px;
         }
         
         .track-title {
             font-size: 0.88rem;
             font-weight: 600;
             color: var(--text-main);
             white-space: nowrap;
             overflow: hidden;
             text-overflow: ellipsis;
         }
         
         .track-sub {
             font-size: 0.72rem;
             color: rgba(148, 163, 184, 0.85);
         }
         
         .track-progress {
             width: 100%;
             height: 4px;
             background: rgba(15, 23, 42, 0.9);
             border-radius: 999px;
             overflow: hidden;
             margin-top: 2px;
         }
         
         .track-progress-fill {
             height: 100%;
             width: 0%;
             background: linear-gradient(90deg, var(--primary), var(--secondary));
             border-radius: 999px;
             transition: width 0.35s var(--ease);
         }
         
         .track-row audio {
             width: 100%;
             margin-top: 6px;
             height: 32px;
             border-radius: 10px;
             filter: invert(1) hue-rotate(180deg) opacity(0.85);
         }
         
         .prog-bar {
             width: 100%;
             height: 6px;
             background: rgba(255, 255, 255, 0.05);
             border-radius: 99px;
             margin-top: 20px;
             overflow: hidden;
         }
         
         .prog-fill {
             height: 100%;
             background: linear-gradient(to right, var(--primary), var(--secondary));
             border-radius: 99px;
             transition: width 0.4s var(--ease);
         }
         /* 历史记录项 */
         
         .hist-item {
             background: rgba(255, 255, 255, 0.02);
             border: 1px solid var(--border);
             padding: 24px;
             border-radius: var(--radius-lg);
             margin-bottom: 16px;
             transition: all 0.4s var(--ease);
         }
         
         .hist-item:hover {
             transform: translateX(4px);
             border-color: var(--primary);
             background: rgba(255, 255, 255, 0.04);
         }
         
         .hist-prompt {
             font-size: 1rem;
             font-weight: 600;
             line-height: 1.6;
             margin: 12px 0;
         }
         
         .tag {
             padding: 4px 12px;
             border-radius: 99px;
             font-size: 0.65rem;
             font-weight: 800;
             text-transform: uppercase;
             background: var(--glass);
         }
         /* 状态网格 */
         
         .stat-grid {
             display: grid;
             grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
             gap: 20px;
             margin-bottom: 32px;
         }
         
         .stat-card {
             background: var(--glass);
             border: 1px solid var(--border);
             border-radius: var(--radius-lg);
             padding: 24px;
         }
         
         .stat-val {
             font-size: 1.5rem;
             font-weight: 800;
             color: var(--primary);
             margin-bottom: 4px;
         }
         
         .stat-lbl {
             font-size: 0.7rem;
             font-weight: 700;
             color: var(--text-muted);
             text-transform: uppercase;
             letter-spacing: 0.1em;
         }
         
         .adv-toggle {
             display: flex;
             align-items: center;
             gap: 8px;
             font-size: 0.85rem;
             font-weight: 700;
             color: var(--text-muted);
             cursor: pointer;
             margin: 12px 0;
             transition: color 0.3s;
         }
         
         .adv-toggle:hover {
             color: var(--primary);
         }
         
         .adv-panel {
             overflow: hidden;
             transition: max-height 0.5s var(--ease);
             max-height: 0;
         }
         
         .adv-panel.open {
             max-height: 1000px;
             padding-top: 10px;
             overflow: visible;
         }
         
         .hidden {
             display: none !important;
         }
         
         .spin {
             animation: spin 2s linear infinite;
         }
         
         @keyframes spin {
             from {
                 transform: rotate(0deg);
             }
             to {
                 transform: rotate(360deg);
             }
         }
         /* 动画工具 */
         
         .delay-1 {
             animation-delay: 0.1s;
         }
         
         .delay-2 {
             animation-delay: 0.2s;
         }
         /* AI 填充高亮动画 */
         
         @keyframes aiGlow {
             0% {
                 box-shadow: 0 0 0 0 rgba(167, 139, 250, 0);
                 border-color: rgba(255, 255, 255, 0.09);
             }
             30% {
                 box-shadow: 0 0 20px rgba(167, 139, 250, 0.4);
                 border-color: var(--secondary);
             }
             100% {
                 box-shadow: 0 0 0 0 rgba(167, 139, 250, 0);
                 border-color: rgba(255, 255, 255, 0.09);
             }
         }
         
         .ai-glow {
             animation: aiGlow 1.5s ease-out;
         }
         /* ================= Responsive Sidebar (must be AFTER base .sb styles) ================= */
         
         @media (max-width: 1024px) {
             .sb {
                 width: 72px;
                 min-width: 72px;
                 padding: 10px 0;
                 position: sticky;
                 left: 0;
                 top: 0;
                 height: 100vh;
                 transition: width 0.3s var(--ease);
             }
             .sb-brand span,
             .sb-lbl,
             .sb-item span,
             .sb-foot {
                 display: none;
             }
             .sb-brand {
                 padding: 20px 0;
                 justify-content: center;
             }
             .sb-item {
                 margin: 4px 8px;
                 padding: 12px;
                 justify-content: center;
             }
             .sb-item i {
                 font-size: 1.25rem;
                 margin: 0;
             }
             body {
                 overflow-x: hidden;
             }
         }
         
         @media (max-width: 860px) {
             .sb {
                 width: 64px;
                 min-width: 64px;
             }
         }
         
         @media (max-width: 640px) {
             .sb {
                 width: 56px;
                 min-width: 56px;
             }
             .sb-item {
                 margin: 4px 6px;
                 padding: 11px;
             }
             .sb-item i {
                 font-size: 1.15rem;
             }
         }