.ost-list-toolbar-end {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-left: auto;
    flex-shrink: 0;
}
.ost-title-toggle {
    display: inline-flex;
    align-items: stretch;
    border: 1px solid #e2e8f0;
    border-radius: 999px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.ost-title-toggle-btn {
    font: inherit;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    padding: 6px 11px;
    border: none;
    border-right: 1px solid #e2e8f0;
    background: transparent;
    color: #64748b;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.14s ease, color 0.14s ease;
}
.ost-title-toggle-btn:last-child {
    border-right: none;
}
.ost-title-toggle-btn:hover {
    background: #f8fafc;
    color: #334155;
}
.ost-title-toggle-btn:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: -2px;
    z-index: 1;
}
.ost-title-toggle-btn.is-active {
    background: #ccfbf1;
    color: #0f766e;
}
.panel-head-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 12px;
    margin-bottom: 10px;
}
.panel-head-row .panel-head {
    margin: 0;
}
.list-toolbar-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 12px;
}