:root{--primary: #3b82f6;--primary-dark: #2563eb;--primary-light: #60a5fa;--primary-bg: #eff6ff;--gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);--gradient-subtle: linear-gradient(135deg, #eff6ff 0%, #f0fdfa 100%);--gradient-btn: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);--bg: #f8fafc;--bg-soft: #ffffff;--panel: #ffffff;--surface: #f1f5f9;--line: #e2e8f0;--line-strong: #cbd5e1;--text: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--text-inverse: #ffffff;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--info: #06b6d4;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow: 0 2px 8px rgba(0,0,0,.06);--shadow-md: 0 4px 16px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.1);--shadow-glow: 0 0 20px rgba(59,130,246,.15);--radius-sm: 6px;--radius: 10px;--radius-lg: 16px;--radius-xl: 24px;--transition: .2s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}.app{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-soft);border-right:1px solid var(--line);padding:0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar-header{padding:28px 24px 20px;border-bottom:1px solid var(--line);background:var(--gradient)}.brand{display:flex;align-items:center;gap:10px}.brand-icon{width:38px;height:38px;border-radius:var(--radius);background:#fff3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;font-weight:800}.brand-text{display:flex;flex-direction:column}.brand-name{font-size:19px;font-weight:700;color:#fff;letter-spacing:1px}.brand-slogan{font-size:11px;color:#ffffffbf;letter-spacing:.5px}.mode-pill{margin-top:14px;font-size:12px;color:var(--text-inverse);background:#ffffff26;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);padding:7px 14px;border-radius:999px;display:inline-flex;align-items:center;gap:6px}.mode-dot{width:7px;height:7px;border-radius:50%;background:var(--success);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.nav-area{padding:20px 14px;flex:1}.nav-group{margin-bottom:20px}.nav-group-title{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;padding:0 12px;margin-bottom:8px}.nav-item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:transparent;color:var(--text-secondary);border:none;padding:11px 14px;border-radius:var(--radius);cursor:pointer;font-size:14px;font-weight:500;transition:all var(--transition);margin-bottom:2px}.nav-item:hover{background:var(--primary-bg);color:var(--primary-dark)}.nav-item.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-glow);font-weight:600}.sidebar-footer{padding:16px 20px;border-top:1px solid var(--line);font-size:11px;color:var(--text-muted);text-align:center}.sidebar-footer a{color:var(--primary);text-decoration:none}.main{flex:1;padding:0;overflow-y:auto;background:var(--bg)}.top-bar{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:18px 36px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffd9}.top-title{font-size:17px;font-weight:600;color:var(--text)}.top-badge{font-size:11px;font-weight:600;background:var(--primary-bg);color:var(--primary-dark);padding:4px 12px;border-radius:999px;border:1px solid var(--primary-light)}.main-content{padding:32px 36px;max-width:900px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 30px;box-shadow:var(--shadow)}.panel h2{margin:0 0 22px;font-size:20px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:10px}.panel h2:before{content:"";width:4px;height:22px;background:var(--gradient);border-radius:2px}.field{margin-bottom:18px}.field label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:7px}.field .hint{font-size:12px;color:var(--text-muted);margin:6px 0 4px}textarea,input[type=text],input[type=number],select{width:100%;background:var(--bg);color:var(--text);border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:11px 14px;font-size:14px;font-family:inherit;transition:all var(--transition)}textarea:hover,input:hover,select:hover{border-color:var(--line-strong)}textarea:focus,input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61a}textarea{resize:vertical;min-height:80px}select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}.row{display:flex;gap:14px}.row .field{flex:1}.btn-primary{background:var(--gradient-btn);color:#fff;border:none;padding:13px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition);box-shadow:0 4px 12px #3b82f640;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #3b82f659}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.btn-ghost{background:transparent;color:var(--text-muted);border:1.5px solid var(--line);padding:7px 14px;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;margin-left:8px;transition:all var(--transition)}.btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-bg)}.loading{color:var(--primary);font-size:14px;font-weight:500;margin-top:16px;padding:14px 18px;background:var(--primary-bg);border-radius:var(--radius);display:flex;align-items:center;gap:10px;border:1px solid var(--primary-light)}.loading-spinner{width:16px;height:16px;border:2px solid var(--primary-light);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.result{margin-top:26px}.result-item{margin-bottom:16px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-soft);box-shadow:var(--shadow-sm)}.result-item img,.result-item video{max-width:100%;display:block;background:#000}.result-item audio{width:100%;padding:12px}.result-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:10px 14px;background:var(--surface);border-top:1px solid var(--line)}.badge{font-size:11px;font-weight:600;background:var(--surface);border:1px solid var(--line);color:var(--text-secondary);padding:3px 10px;border-radius:999px}.badge-mock{color:var(--warning);border-color:#fcd34d;background:#fffbeb}.badge-success{color:var(--success);border-color:#6ee7b7;background:#ecfdf5}.ts{font-size:12px;color:var(--text-muted)}.error-box{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:14px 18px;border-radius:var(--radius);font-size:14px;margin-top:18px;display:flex;align-items:center;gap:8px}.info-box{background:var(--primary-bg);border:1px solid var(--primary-light);color:var(--primary-dark);padding:14px 18px;border-radius:var(--radius);font-size:13px;margin-bottom:18px;line-height:1.65}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px;margin-top:20px}.history-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition);cursor:default}.history-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.history-thumb{height:160px;background:var(--surface);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.history-thumb img,.history-thumb video{width:100%;height:100%;object-fit:cover}.history-thumb .audio-ph{font-size:42px;opacity:.35}.history-meta{padding:12px 14px}.history-prompt{font-size:13px;color:var(--text-secondary);margin:6px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}.history-type{font-size:11px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:.5px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:32px}.feature-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px 14px;text-align:center;cursor:pointer;transition:all var(--transition);position:relative;overflow:hidden}.feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);opacity:0;transition:opacity var(--transition)}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.feature-card:hover:before{opacity:1}.feature-card.active{border-color:var(--primary);box-shadow:var(--shadow-glow)}.feature-card.active:before{opacity:1}.feature-name{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}.feature-desc{font-size:11px;color:var(--text-muted);line-height:1.5}.page-content{max-width:720px}.page-content h2{font-size:20px;font-weight:700;color:var(--text);margin-bottom:6px}.page-content .desc{font-size:13px;color:var(--text-muted);margin-bottom:24px;line-height:1.6}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:7px}.form-group .hint{font-size:12px;color:var(--text-muted);margin-left:8px}.form-row{display:flex;gap:14px}.form-row .form-group{flex:1}.page-content button:not(.btn-ghost){background:var(--gradient-btn);color:#fff;border:none;padding:12px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition);box-shadow:0 4px 12px #3b82f640;margin-top:8px}.page-content button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #3b82f659}.page-content button:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.result-card{margin-top:24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;text-align:center}.result-card img,.result-card video{max-width:100%;border-radius:var(--radius);margin-bottom:12px}.result-card a{color:var(--primary);font-size:13px;font-weight:500;text-decoration:none}.result-card a:hover{text-decoration:underline}.error{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:14px 18px;border-radius:var(--radius);font-size:14px;margin-top:16px}.loading-bar{margin-top:16px;padding:14px 18px;background:var(--primary-bg);border-radius:var(--radius);color:var(--primary-dark);font-size:14px;font-weight:500;border:1px solid var(--primary-light);animation:pulse 2s infinite}@media (max-width: 768px){.sidebar{display:none}.main-content{padding:20px}.feature-grid{grid-template-columns:repeat(2,1fr)}.top-bar{padding:14px 20px}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}input[type=file]{width:100%;padding:10px 0;font-size:14px;color:var(--text-secondary)}input[type=file]::file-selector-button{background:var(--gradient-btn);color:#fff;border:none;padding:6px 16px;border-radius:var(--radius-sm);margin-right:12px;cursor:pointer;font-weight:600;font-size:13px}