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900;font-style:normal;font-display:swap}:root{--bg-color:var(--ui-bg);--panel-bg:var(--ui-surface);--border-color:var(--ui-border);--text-main:var(--ui-text);--text-muted:var(--ui-text-secondary);--primary:var(--ui-accent-blue);--danger:var(--ui-danger);--success:var(--ui-success);--border-radius:var(--ui-radius-md);--transition:var(--ui-transition);--font-sans:var(--ui-font)}*{box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;margin:0;padding:0}h1,h2,h3,h4,h5,h6,p{margin:0}button{font-family:var(--font-sans);cursor:pointer;color:inherit;background:0 0;border:none;outline:none;padding:0}button:focus-visible{outline:2px solid var(--primary);outline-offset:2px}input{font-family:var(--font-sans);outline:none}a{color:inherit;text-decoration:none}.app-container{background:var(--bg-color);flex-direction:row;gap:16px;height:100vh;padding:16px;display:flex;position:relative;overflow:hidden}.app-main{border-radius:var(--ui-radius-lg);flex:1;min-width:0;display:flex;position:relative;overflow:hidden}.sidebar{width:var(--sidebar-width);transition:width var(--transition);flex-direction:column;display:flex;overflow:hidden}.sidebar.collapsed{width:var(--sidebar-width-collapsed)}.sidebar-top{flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;min-height:56px;padding:16px 16px 12px;display:flex}.sidebar.collapsed .sidebar-top{flex-direction:column;gap:8px;padding:12px 8px}.sidebar-brand{flex:1;align-items:center;gap:2px;min-width:0;display:flex}.sidebar.collapsed .sidebar-brand{flex:none;justify-content:center}.sidebar-logo{border-radius:var(--ui-radius-md);background:0 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4px;font-size:12px;line-height:1.5}.sidebar-history-list{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.sidebar-footer{border-top:1px solid var(--ui-border);flex-shrink:0;align-items:center;gap:8px;margin-top:auto;padding:12px;display:flex}.sidebar.collapsed .sidebar-footer{flex-direction:column;padding:8px}.sidebar-tip-wrap{flex:1;min-width:0;position:relative}.sidebar.collapsed .sidebar-tip-wrap{flex:none}.sidebar-tip-popover{z-index:20;width:240px;display:none;position:absolute;bottom:calc(100% + 8px);left:0}.sidebar.collapsed .sidebar-tip-popover{bottom:0;left:calc(100% + 8px)}.sidebar-tip-wrap:hover .sidebar-tip-popover,.sidebar-tip-wrap:focus-within 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96px;display:flex;overflow:auto}.preview-zoom-shell{flex-shrink:0;overflow:hidden}.preview-zoom-wrap{transform-origin:0 0;transition:transform .2s}.preview-iframe-wrap{width:100%;height:100%;position:relative}.preview-iframe-placeholder{text-align:center;color:var(--text-secondary,#8e8e93);pointer-events:none;-webkit-user-select:none;user-select:none;background:#f2f2f7;justify-content:center;align-items:center;padding:16px;font-size:14px;display:flex;position:absolute;inset:0}.preview-error{background:var(--danger);color:#fff;border-radius:var(--ui-radius-md);z-index:100;box-shadow:var(--ui-shadow-2);align-items:center;gap:8px;padding:12px 16px;font-size:13px;font-weight:500;display:flex;position:absolute;top:16px;right:16px}.preview-modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:50;background:#00000059;justify-content:center;align-items:center;padding:32px;display:flex;position:absolute;inset:0}.preview-modal{background:var(--ui-surface);border-radius:var(--ui-radius-xl);box-shadow:var(--ui-shadow-3);flex-direction:column;align-items:center;gap:20px;width:100%;max-width:800px;padding:28px;display:flex}.preview-modal__title{color:var(--text-main);font-size:18px;font-weight:600}.preview-modal__actions{gap:12px;display:flex}.preview-modal video{border-radius:var(--ui-radius-md);border:1px solid var(--ui-border);max-width:100%;max-height:50vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--ui-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}:root{--ui-bg:#f5f6f8;--ui-surface:#fff;--ui-surface-glass:#ffffffd9;--ui-text:#1c1c1e;--ui-text-secondary:#8e8e93;--ui-text-muted:#a1a1a6;--ui-accent:#000;--ui-accent-blue:#007aff;--ui-danger:#ff3b30;--ui-success:#34c759;--ui-border:#e5e5ea;--ui-hover:#f2f2f7;--ui-input-bg:#f2f2f7;--ui-radius-sm:6px;--ui-radius-md:12px;--ui-radius-lg:20px;--ui-radius-xl:24px;--ui-radius-pill:9999px;--ui-shadow-2:0 4px 12px #0000000a;--ui-shadow-3:0 12px 32px #0000000f, 0 0 1px #00000014;--ui-font:Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", sans-serif;--ui-transition:all .2s 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20px;font-weight:600}.ui-btn--primary:hover:not(:disabled){opacity:.85}.ui-btn--secondary{background:var(--ui-hover);color:var(--ui-text);border-radius:var(--ui-radius-pill);height:38px;padding:0 16px}.ui-btn--secondary:hover:not(:disabled){background:var(--ui-border)}.ui-btn--danger{color:var(--ui-danger);border-radius:var(--ui-radius-md);background:#ff3b301a;border:1px solid #ff3b3033;height:40px;padding:0 20px;font-weight:600}.ui-btn--danger:hover:not(:disabled){background:#ff3b302e}.ui-btn--ghost{color:var(--ui-text-secondary);border-radius:var(--ui-radius-sm);background:0 0;height:32px;padding:0 8px}.ui-btn--ghost:hover:not(:disabled){background:var(--ui-hover);color:var(--ui-text)}.ui-btn--full{width:100%}.ui-btn--sm{height:32px;padding:0 12px;font-size:12px}.ui-icon-btn{border-radius:var(--ui-radius-md);width:36px;height:36px;color:var(--ui-text-secondary);cursor:pointer;transition:var(--ui-transition);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.ui-icon-btn:hover,.ui-icon-btn--active{background:var(--ui-hover);color:var(--ui-text)}.ui-icon-btn:focus-visible{outline:2px solid var(--ui-accent-blue);outline-offset:2px}.ui-input-wrap{flex-direction:column;gap:4px;display:flex}.ui-input-label{color:var(--ui-text-secondary);font-size:12px;font-weight:500}.ui-input{width:100%;font-family:var(--ui-font);color:var(--ui-text);background:var(--ui-input-bg);border-radius:var(--ui-radius-md);transition:var(--ui-transition);border:1px solid #0000;outline:none;padding:10px 12px;font-size:14px}.ui-input::placeholder{color:var(--ui-text-muted)}.ui-input:focus{background:var(--ui-surface);border-color:var(--ui-border);box-shadow:var(--ui-shadow-2)}.ui-input--sm{text-align:center;padding:6px 10px;font-size:12px}.ui-select{width:100%;font-family:var(--ui-font);color:var(--ui-text);background:var(--ui-input-bg);border-radius:var(--ui-radius-md);cursor:pointer;transition:var(--ui-transition);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238E8E93' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;border:1px solid #0000;outline:none;padding:10px 32px 10px 12px;font-size:14px}.ui-select:focus{background-color:var(--ui-surface);border-color:var(--ui-border);box-shadow:var(--ui-shadow-2)}.ui-segmented{background:var(--ui-input-bg);border-radius:var(--ui-radius-md);flex-wrap:wrap;gap:2px;padding:3px;display:flex}.ui-segmented--nowrap{flex-wrap:nowrap}.ui-segmented__item{border-radius:calc(var(--ui-radius-md) - 2px);min-width:0;color:var(--ui-text-secondary);cursor:pointer;transition:var(--ui-transition);text-align:center;white-space:nowrap;text-overflow:ellipsis;background:0 0;border:none;flex:1;padding:7px 10px;font-size:12px;font-weight:500;overflow:hidden}.ui-segmented__item:hover{color:var(--ui-text)}.ui-segmented__item--active{background:var(--ui-surface);color:var(--ui-text);box-shadow:var(--ui-shadow-2);font-weight:600}.ui-switch{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:10px;display:inline-flex}.ui-switch__track{background:var(--ui-border);border-radius:var(--ui-radius-pill);width:44px;height:26px;transition:var(--ui-transition);flex-shrink:0;position:relative}.ui-switch__track--on{background:var(--ui-accent)}.ui-switch__thumb{width:20px;height:20px;transition:var(--ui-transition);background:#fff;border-radius:50%;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #00000026}.ui-switch__track--on 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var(--ui-border);align-items:flex-end;gap:8px;padding-top:4px;display:flex}.ui-dimension-row__sep{color:var(--ui-text-muted);flex-shrink:0;padding-bottom:8px;font-size:12px}.ui-chip-row{scrollbar-width:none;flex-wrap:nowrap;gap:6px;padding-bottom:2px;display:flex;overflow-x:auto}.ui-chip-row::-webkit-scrollbar{display:none}.ui-chip{font-family:var(--ui-font);color:var(--ui-text-secondary);background:var(--ui-input-bg);border-radius:var(--ui-radius-pill);cursor:pointer;transition:var(--ui-transition);white-space:nowrap;border:1px solid #0000;flex-shrink:0;padding:6px 12px;font-size:12px;font-weight:500}.ui-chip:hover{color:var(--ui-text);border-color:var(--ui-border)}.ui-chip--active{color:var(--ui-text);background:var(--ui-surface);border-color:var(--ui-text);box-shadow:var(--ui-shadow-2);font-weight:600}.ui-bg-card-grid{scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:var(--ui-text-muted) var(--ui-input-bg);gap:8px;min-height:0;max-height:220px;display:grid;overflow:hidden 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#0000;flex-direction:column;gap:4px;padding:0;display:flex;overflow:hidden}.ui-bg-card:hover{border-color:var(--ui-border)}.ui-bg-card--active{border-color:var(--ui-text);box-shadow:var(--ui-shadow-2)}.ui-bg-card__preview{aspect-ratio:16/10;background:var(--ui-border);overflow:hidden}.ui-bg-card__preview img{object-fit:cover;width:100%;height:100%;display:block}.ui-bg-card__label{color:var(--ui-text-secondary);text-align:center;padding:0 6px 6px;font-size:11px;font-weight:500}.ui-bg-card--active .ui-bg-card__label{color:var(--ui-text);font-weight:600}.ui-bg-image-upload{flex-direction:column;gap:8px;display:flex}.ui-bg-image-upload__btn{height:38px;color:var(--ui-text);background:var(--ui-hover);border-radius:var(--ui-radius-pill);cursor:pointer;transition:var(--ui-transition);justify-content:center;align-items:center;gap:6px;padding:0 16px;font-size:14px;font-weight:500;display:inline-flex}.ui-bg-image-upload__btn:hover{background:var(--ui-border)}.ui-color-picker-row{gap:8px;display:flex}.ui-color-picker{flex:1;align-items:center;gap:8px;min-width:0;display:flex;position:relative}.ui-color-picker__swatch{border-radius:var(--ui-radius-md);border:1px solid var(--ui-border);cursor:pointer;width:36px;height:36px;transition:var(--ui-transition);flex-shrink:0;box-shadow:inset 0 0 0 1px #0000000a}.ui-color-picker__swatch:hover{border-color:var(--ui-text-muted)}.ui-color-picker--open .ui-color-picker__swatch{border-color:var(--ui-text);box-shadow:var(--ui-shadow-2)}.ui-color-picker__hex{min-width:0;height:36px;font-family:var(--ui-font);color:var(--ui-text);background:var(--ui-input-bg);border-radius:var(--ui-radius-md);transition:var(--ui-transition);border:1px solid #0000;outline:none;flex:1;padding:0 10px;font-size:12px;font-weight:500}.ui-color-picker__hex:focus{background:var(--ui-surface);border-color:var(--ui-border);box-shadow:var(--ui-shadow-2)}.ui-color-picker__popover{background:var(--ui-surface);border:1px solid var(--ui-border);border-radius:var(--ui-radius-md);box-shadow:var(--ui-shadow-3);flex-direction:column;gap:10px;padding:10px;display:flex}.ui-color-picker__sv{border-radius:var(--ui-radius-sm);cursor:crosshair;touch-action:none;background-image:linear-gradient(#0000,#000),linear-gradient(90deg,#fff,#0000);height:120px;position:relative;overflow:hidden}.ui-color-picker__sv-thumb{width:14px;height:14px;box-shadow:0 0 0 1px #00000040, var(--ui-shadow-2);pointer-events:none;border:2px solid #fff;border-radius:50%;position:absolute;transform:translate(-50%,-50%)}.ui-color-picker__row{align-items:center;gap:10px;display:flex}.ui-color-picker__preview{border:1px solid var(--ui-border);border-radius:50%;flex-shrink:0;width:28px;height:28px;box-shadow:inset 0 0 0 1px 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span{color:var(--ui-text-muted);text-transform:uppercase;font-size:10px;font-weight:500}.ui-bg-presets-header{justify-content:space-between;align-items:center;display:flex}.ui-bg-presets-header__label{color:var(--ui-text-secondary);font-size:12px;font-weight:500}.ui-list-item{text-align:left;border-radius:var(--ui-radius-md);cursor:pointer;width:100%;transition:var(--ui-transition);font-family:var(--ui-font);background:0 0;border:none;flex-direction:column;gap:2px;padding:10px 12px;display:flex}.ui-list-item:hover,.ui-list-item--active{background:var(--ui-hover)}.ui-list-item--active .ui-list-item__title{color:var(--ui-text);font-weight:600}.ui-list-item__title{color:var(--ui-text);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.ui-list-item__subtitle{color:var(--ui-text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.ui-list-item__meta{color:var(--ui-text-muted);margin-top:2px;font-size:10px}.ui-card{background:var(--ui-surface);border-radius:var(--ui-radius-md);box-shadow:var(--ui-shadow-2);padding:12px}.ui-card--hint{background:#007aff0f;border:1px solid #007aff26}.ui-card__header{justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;display:flex}.ui-card__title{color:var(--ui-text);font-size:12px;font-weight:600}.ui-card__text{color:var(--ui-text-secondary);margin:0;font-size:11px;line-height:1.5}.ui-modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0006;justify-content:center;align-items:center;padding:32px;display:flex;position:fixed;inset:0}.ui-modal{background:var(--ui-surface);border-radius:var(--ui-radius-xl);box-shadow:var(--ui-shadow-3);flex-direction:column;width:100%;max-width:900px;max-height:80vh;display:flex;overflow:hidden}.ui-modal__header{border-bottom:1px solid var(--ui-border);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.ui-modal__title{color:var(--ui-text);margin:0;font-size:16px;font-weight:600}.ui-modal__body{padding:24px;overflow-y:auto}.ui-thumb-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;display:grid}.ui-thumb-item{cursor:pointer;border-radius:var(--ui-radius-md);transition:var(--ui-transition);background:var(--ui-hover);border:2px solid #0000;flex-direction:column;align-items:center;gap:10px;padding:12px;display:flex}.ui-thumb-item:hover{border-color:var(--ui-border)}.ui-thumb-item--active{border-color:var(--ui-text);background:var(--ui-surface);box-shadow:var(--ui-shadow-2)}.ui-thumb-item__preview{background:var(--ui-surface);border-radius:var(--ui-radius-sm);justify-content:center;align-items:center;width:100%;height:100px;display:flex}.ui-thumb-item__preview img{object-fit:contain;max-width:100%;max-height:100%}.ui-thumb-item__label{text-align:center;color:var(--ui-text);font-size:12px;font-weight:500}.ui-record-bar{background:var(--ui-surface);border-radius:var(--ui-radius-pill);box-shadow:var(--ui-shadow-3);z-index:50;align-items:center;gap:4px;padding:6px 8px;display:flex;position:absolute;bottom:24px;left:50%;transform:translate(-50%)}.ui-record-bar__divider{background:var(--ui-border);flex-shrink:0;width:1px;height:24px;margin:0 4px}.ui-record-bar__status{color:var(--ui-danger);align-items:center;gap:6px;padding:0 12px;font-size:14px;font-weight:500;display:flex}.ui-record-bar__dot{background:var(--ui-danger);border-radius:50%;flex-shrink:0;width:8px;height:8px;animation:2s infinite ui-pulse}.ui-record-bar__timer{font-variant-numeric:tabular-nums;min-width:44px;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;font-weight:600}.ui-record-bar__countdown{color:var(--ui-danger);text-align:center;min-width:48px;padding:0 16px;font-size:24px;font-weight:700}.ui-record-bar__zoom{color:var(--ui-text-secondary);text-align:center;-webkit-user-select:none;user-select:none;min-width:36px;font-size:12px;font-weight:600}.ui-range{appearance:none;background:var(--ui-border);border-radius:var(--ui-radius-pill);cursor:pointer;outline:none;width:100%;height:4px}.ui-range::-webkit-slider-thumb{appearance:none;background:var(--ui-surface);border:2px solid var(--ui-text);width:18px;height:18px;box-shadow:var(--ui-shadow-2);cursor:pointer;border-radius:50%}.ui-search{background:var(--ui-input-bg);border-radius:var(--ui-radius-md);color:var(--ui-text-secondary);align-items:center;gap:8px;padding:8px 12px;display:flex}.ui-search__input{color:var(--ui-text);font-size:13px;font-family:var(--ui-font);background:0 0;border:none;outline:none;flex:1}.ui-search__input::placeholder{color:var(--ui-text-muted)}.ui-search__kbd{color:var(--ui-text-muted);background:var(--ui-surface);border:1px solid var(--ui-border);border-radius:4px;flex-shrink:0;padding:2px 6px;font-size:11px}